computed tomographic colonography
Summary: A non-invasive imaging method that uses computed tomographic data combined with specialized imaging software to examine the colon.
Publications261 found, 100 shown here
- CT colonography versus colonoscopy for the detection of advanced neoplasiaDavid H Kim
Department of Radiology, University of Wisconsin Medical School, Madison 53792 3252, USA
N Engl J Med 357:1403-12. 2007Advanced neoplasia represents the primary target for colorectal-cancer screening and prevention. We compared the diagnostic yield from parallel computed tomographic colonography (CTC) and optical colonoscopy (OC) screening programs.
- Accuracy of CT colonography for detection of large adenomas and cancersC Daniel Johnson
Mayo Clinic Arizona, Scottsdale, AZ, USA
N Engl J Med 359:1207-17. 2008..Computed tomographic (CT) colonography is a noninvasive option in screening for colorectal cancer. However, its accuracy as a screening tool in asymptomatic adults has not been well defined...
- CT colonography reporting and data system: a consensus proposalMichael E Zalis
Radiology 236:3-9. 2005
- Comparison of CT colonography, colonoscopy, sigmoidoscopy and faecal occult blood tests for the detection of advanced adenoma in an average risk populationA Graser
Department of Clinical Radiology, University of Munich, Klinikum Grosshadern, Munich, Germany
Gut 58:241-8. 2009....
- Preoperative T and N staging of colorectal cancer: accuracy of contrast-enhanced multi-detector row CT colonography--initial experienceAntonella Filippone
Department of Clinical Sciences and Bioimages, Section of Radiology, SS Annunziata Hospital, G D Annunzio University, Via dei Vestini, 66013 Chieti, Italy
Radiology 231:83-90. 2004..To evaluate the accuracy of contrast material-enhanced multi-detector row computed tomographic (CT) colonography for preoperative staging of colorectal cancer...
- Diagnostic accuracy of computed tomographic colonography for the detection of advanced neoplasia in individuals at increased risk of colorectal cancerDaniele Regge
Radiology Unit, Institute for Cancer Research and Treatment, Candiolo, Turin, Italy
JAMA 301:2453-61. 2009..Computed tomographic (CT) colonography has been recognized as an alternative for colorectal cancer (CRC) screening in average-risk individuals, but less information is available on its performance in individuals at increased risk of CRC...
- Automated insufflation of carbon dioxide for MDCT colonography: distension and patient experience compared with manual insufflationDavid Burling
Department of Intestinal Imaging, St Mark s and Northwick Park Hospitals, Harrow HA1 3UJ, UJK
AJR Am J Roentgenol 186:96-103. 2006..The purpose of our study was to compare the effects of automated and manual carbon dioxide insufflation before CT colonography on distention and patient acceptance...
- Computed tomography colonography: feasibility of computer-aided polyp detection in a "first reader" paradigmAravind Mani
Department of Radiology, Stanford University Medical Center, and Stanford Medical School, CA 94305, USA
J Comput Assist Tomogr 28:318-26. 2004..To determine the feasibility of a computer-aided detection (CAD) algorithm as the "first reader" in computed tomography colonography (CTC)...
- Colonic preparation for computed tomographic colonography: understanding the relative advantages and disadvantages of a noncathartic approachPerry J Pickhardt
Mayo Clin Proc 82:659-61. 2007
- Cost-effectiveness of computed tomographic colonography screening for colorectal cancer in the medicare populationAmy B Knudsen
Institute for Technology Assessment, Massachusetts General Hospital, 101 Merrimac St, 10th Floor, Boston, MA 02114
J Natl Cancer Inst 102:1238-52. 2010The Centers for Medicare and Medicaid Services (CMS) considered whether to reimburse computed tomographic colonography (CTC) for colorectal cancer screening of Medicare enrollees...
- European Society of Gastrointestinal and Abdominal Radiology (ESGAR): consensus statement on CT colonographyStuart A Taylor
Department of Imaging, University College Hospital, 2F Podium, 235 Euston Road, London, NW1 2BU, United Kingdom
Eur Radiol 17:575-9. 2007..There was consensus that polyps 4 mm or less could be ignored assuming agreement from local gastroenterological colleagues. There is increasing consensus amongst European experts as to the current best practice in CTC...
- Potentially serious adverse events at CT colonography in symptomatic patients: national survey of the United KingdomDavid Burling
Department of Specialist Radiology, Podium Level 2, University College Hospital, Euston Road, London NW1 2BU, England
Radiology 239:464-71. 2006..To retrospectively determine the incidence of potentially serious adverse events associated with computed tomographic (CT) colonography performed in patients with symptoms of colorectal cancer...
- Diverticular disease in CT colonographyPhilippe Lefere
Department of Radiology, Stedelijk Ziekenhuis, Brugesteenweg 90, 8800 Roeselare, Belgium
Eur Radiol 13:L62-74. 2003..In case of equivocal findings additional conventional colonoscopy should be advised whenever a clinically significant lesion (> or = 1 cm) is suspected...
- Colonic polyps: complementary role of computer-aided detection in CT colonographyRonald M Summers
Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Dr, MSC 1182, Bldg 10, Rm 1C660, Bethesda, MD 20892 1182, USA
Radiology 225:391-9. 2002....
- Patient-controlled room air insufflation versus automated carbon dioxide delivery for CT colonographyTheodore J Shinners
Department of Radiology, University of Wisconsin Medical School, Clinical Science Center, 600 Highland Ave, Madison, WI 53792, USA
AJR Am J Roentgenol 186:1491-6. 2006..Our objective was to prospectively compare colonic distention and patient comfort at screening CT colonography (CTC) with patient-controlled room air (RA) insufflation versus automated carbon dioxide (CO2) delivery...
- Computed tomographic colonography: assessment of radiologist performance with and without computer-aided detectionSteve Halligan
Department of Specialist Radiology, University College Hospital, London, England
Gastroenterology 131:1690-9. 2006..However, the unavoidable interaction between CAD and the reader has not been addressed...
- Spasmolysis at CT colonography: butyl scopolamine versus glucagonPatrik Rogalla
Department of Radiology, Charite Campus Mitte, Universitatsmedizin Berlin, Schumannstr 20 21, 10098 Berlin, Germany
Radiology 236:184-8. 2005..To retrospectively determine if the use of butyl scopolamine or glucagon in the supine patient improves colonic distention and reduces the number of collapsed intestinal segments at computed tomographic (CT) colonography...
- Standards for gastroenterologists for performing and interpreting diagnostic computed tomographic colonographyDon C Rockey
University of Texas Southwestern Medical Center, Division of Digestive and Liver Diseases, Dallas, Texas, USA
Gastroenterology 133:1005-24. 2007
- Value of virtual computed tomographic colonography for Crohn's colitis: comparison with endoscopy and barium enemaY Ota
Department of Gastroenterology, Fukuoka University Chikushi Hospital, Zokumyoin 377 1, Chikushino Shi, Fukuoka, 818 8502, Japan
Abdom Imaging 28:778-83. 2003..We evaluated the usefulness of virtual computed tomographic colonography (CTC) for the detection of colonic lesions due to Crohn's disease.
- The diagnostic value of multiplanar reconstruction on MDCT colonography for the preoperative staging of colorectal cancerKwang Nam Jin
Department of Radiology, Seoul National University College of Medicine, 28, Yongon Dong, Chongno Gu, Seoul, 110 744, South Korea
Eur Radiol 16:2284-91. 2006..337-0.707). In conclusion, the combined interpretation of the axial and MPR MDCT images significantly improved the local staging of colorectal cancer compared with assessments based on axial images alone...
- Computer-aided diagnosis scheme for detection of polyps at CT colonographyHiroyuki Yoshida
Department of Radiology, University of Chicago, 5841 S Maryland Ave, MC20206, IL 60637, USA
Radiographics 22:963-79. 2002..This CAD scheme permits accurate detection of suspicious lesions and thus has the potential to reduce radiologists' interpretation time and improve their diagnostic accuracy in the detection of polyps at CT colonography...
- Mass screening with CT colonography: should the radiation exposure be of concern?David J Brenner
Center for Radiological Research, Columbia University Medical Center, New York, New York 10032, USA
Gastroenterology 129:328-37. 2005..Therefore, it is pertinent to consider the radiation exposure and any potential radiation risk to the population from such a mass CTC screening program...
- Choosing between CT colonography and colonoscopy in the diagnostic context: a qualitative study of influences on patient preferencesChristian von Wagner
Cancer Research UK, Health Behavior Research Centre, University College London, London, UK
Health Expect 12:18-26. 2009..To explore information needs and preferences on diagnostic bowel tests and elicit preferences for CT colonography (CTC) vs. colonoscopy (CC)...
- Registration of central paths and colonic polyps between supine and prone scans in computed tomography colonography: pilot studyPing Li
Department of Statistics, Stanford University, Stanford, California 94305, USA
Med Phys 31:2912-23. 2004..With polyp registration, the average number of comparisons was 1.78 per polyp, as opposed to 4.28 comparisons without polyp registration...
- Deformable registration of supine and prone colons for computed tomographic colonographyJung W Suh
Diagnostic Radiology, Yale University School of Medicine, New Haven, CT 06520, USA
J Comput Assist Tomogr 33:902-11. 2009b>Computed tomographic colonography is a minimally invasive technique for detecting colorectal polyps and colon cancer...
- Polyp detection with CT colonography: primary 3D endoluminal analysis versus primary 2D transverse analysis with computer-assisted reader softwareStuart A Taylor
Department of Intestinal Imaging, St Mark s Hospital, Northwick Park, Harrow, United Kingdom
Radiology 239:759-67. 2006....
- Computed tomographic colonography: current perspectives and future directionsDon C Rockey
Division of Digestive and Liver Diseases, University of Texas Southwestern Medical Center, Dallas, Texas 75390 8887, USA
Gastroenterology 137:7-14. 2009..Although much about CT colonography has already been learned, more remains to be learned in the future...
- Polyp measurement and size categorisation by CT colonography: effect of observer experience in a multi-centre settingDavid Burling
Intestinal Imaging Centre, St Marks Hospital, London, UK
Eur Radiol 16:1737-44. 2006..e. large polyps misclassified as medium). Caution should be exercised for polyps whose colonographic diameter is below but close to the 1-cm boundary threshold in order to avoid potential miscategorisation of advanced adenomas...
- Current role and future potential of computed tomographic colonography for colorectal polyp detection and colon cancer screening-incidental findingsChristian Sohns
Department of Radiology, Georg August University Goettingen, Robert Koch Str 40, 37099 Goettingen, Germany
Clin Imaging 32:280-6. 2008..In this retrospective study, we assess the current role and future potential of computed tomographic (CT) colonography as a viable alternative imaging tool for colorectal polyp detection and colon cancer screening...
- Should computed tomographic colonography replace optical colonoscopy in screening for colorectal cancer?Ganesh R Veerappan
Gastroenterology Service, Walter Reed Army Medical Center, Washington, DC, USA
Pol Arch Med Wewn 119:236-41. 2009..b>Computed tomographic colonography (CTC) is a minimally invasive, structural evaluation of the entire colorectum that has recently been ..
- CT colonography: feasibility of substantial dose reduction--comparison of medium to very low doses in identical patientsRogier E van Gelder
Department of Radiology, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Radiology 232:611-20. 2004..Initial observations indicate that it is feasible to reduce the radiation dose required for CT colonography. Further studies are needed, however, to investigate the clinical value of very low-dose CT colonography...
- Perforated colon secondary to virtual colonoscopy: report of a caseLoretta Coady-Fariborzian
Division of Colon and Rectal Surgery, Department of Surgery, North Shore University Hospital, Manhasset, New York, USA
Dis Colon Rectum 47:1247-9. 2004..The pathologic findings were described as ulcerative colitis with full-thickness perforation. To the best of our knowledge, this is the first complication from a virtual colonoscopy reported in the literature...
- Prospective blinded evaluation of computed tomographic colonography for screen detection of colorectal polypsC Daniel Johnson
Department of Radiology, Mayo Clinic Rochester, 200 First Street S W, Rochester, Minnesota 55905, USA
Gastroenterology 125:311-9. 2003..This study used a low lesion prevalence population reflective of the screening setting to estimate the sensitivity and specificity of computerized tomographic (CT) colonography for detection of colorectal polyps...
- Actual colonic perforation in virtual colonoscopy: report of a caseMoshe Kamar
Department of Surgery and Transplantation, Sheba Medical Center, Tel Hashomer, Israel
Dis Colon Rectum 47:1242-4; discussion 1244-6. 2004..Thus, it is suggested that in such cases, air insufflation should be gradual, thereby minimizing the risk of perforation...
- Computed tomographic colonography: prevalence, nature, and clinical significance of extracolonic findings in a community screening programMarcus Chin
Department of Gastroenterology and Hepatology, Royal Perth Hospital, Western Australia
Am J Gastroenterol 100:2771-6. 2005Colorectal neoplasia screening by computed tomographic colonography (CTC) may lead to the detection of incidental extracolonic findings...
- Computed tomographic virtual colonoscopy to screen for colorectal neoplasia in asymptomatic adultsPerry J Pickhardt
Department of Radiology, National Naval Medical Center, Bethesda, MD, USA
N Engl J Med 349:2191-200. 2003..We evaluated the performance characteristics of computed tomographic (CT) virtual colonoscopy for the detection of colorectal neoplasia in an average-risk screening population...
- Colonic perforation at CT colonography: assessment of risk in a multicenter large cohortJacob Sosna
Department of Radiology, Hadassah Hebrew University Medical Center, POB 12000, Jerusalem, Israel
Radiology 239:457-63. 2006..To assess retrospectively the incidence, clinical features, and treatment of colonic perforation at computed tomographic (CT) colonography in a large multicenter cohort...
- Incidence of colonic perforation at CT colonography: review of existing data and implications for screening of asymptomatic adultsPerry J Pickhardt
Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
Radiology 239:313-6. 2006
- At what costs will screening with CT colonography be competitive? A cost-effectiveness approachIris Lansdorp-Vogelaar
Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
Int J Cancer 124:1161-8. 2009The costs of computed tomographic colonography (CTC) are not yet established for screening use...
- Revised colorectal screening guidelines: joint effort of the American Cancer Society, U.S. Multisociety Task Force on Colorectal Cancer, and American College of RadiologyElizabeth G McFarland
Radiology 248:717-20. 2008
- Meta-analysis: computed tomographic colonographyBrian P Mulhall
Walter Reed Army Medical Center and Uniformed Services University, Washington, DC 20307, USA
Ann Intern Med 142:635-50. 2005..However, its performance as a test has varied widely across studies, and the reasons for these discrepancies are poorly defined...
- Polyp measurement reliability, accuracy, and discrepancy: optical colonoscopy versus CT colonography with pig colonic specimensSeong Ho Park
Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
Radiology 244:157-64. 2007....
- Cost-effectiveness of colorectal cancer screening with computed tomography colonography: the impact of not reporting diminutive lesionsPerry J Pickhardt
Department of Radiology, University of Wisconsin Medical School, Madison, Wisconsin 53792 3252, USA
Cancer 109:2213-21. 2007..The purpose of the current study was to assess the potential harms, benefits, and cost-effectiveness of CTC screening without the reporting of diminutive lesions compared with other screening strategies...
- Colorectal polyps on portal phase contrast-enhanced CT colonography: lesion attenuation and distinction from tagged fecesSeung Soo Lee
Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 388 1 Poongnap2 Dong, Songpa Gu, Seoul 138 040, Korea
AJR Am J Roentgenol 189:35-40. 2007..The purpose of our study was to determine the attenuation of colorectal polyps on portal phase contrast-enhanced CT colonography (CTC) and evaluate whether enhanced polyps can be clearly distinguished from tagged feces during CTC review...
- CT colonography: effect of colonic distension on polyp measurement accuracy and agreement-in vitro studyStuart Taylor
Department of Imaging, University College Hospital, 235 Euston Road, London, NW1 2BU, UK
Acad Radiol 13:850-9. 2006..To investigate the effect of colonic distension on polyp measurement accuracy and reader agreement...
- Feasibility study of computed tomography colonography using limited bowel preparation at normal and low-dose levels studyJasper Florie
Department of Radiology, Academic Medical Center, G1 230, P O Box 22660, 1100 DD, Amsterdam, The Netherlands
Eur Radiol 17:3112-22. 2007..001). CT colonography without cleansing is preferred to colonoscopy and shows sufficient image quality and moderate sensitivity, without impaired diagnostic value at dose-levels as low as 0.7 mSv...
- Laxative-free CT colonographyPhilippe Lefere
Department of Radiology, Stedelijk Ziekenhuis, Bruggesteenweg 90, Roeselare B 8800, Belgium
AJR Am J Roentgenol 183:945-8. 2004
- Incidental gynecological findings on computed tomographic colonography: prevalence and outcomesIfeyinwa A Stitt
Department of Obstetrics and Gynecology, Martin Army Community Hospital, Fort Benning, GA 31905, USA
Gynecol Oncol 115:138-41. 2009b>Computed tomographic colonography (CTC) is an investigational method for detecting colorectal polyps...
- Community-based screening by colonoscopy or computed tomographic colonography in asymptomatic average-risk subjectsRosie G Scott
Department of Diagnostic and Interventional Radiology, Royal Perth Hospital, Western Australia, Australia
Am J Gastroenterol 99:1145-51. 2004..Our objective was to compare screening CT colonography and colonoscopy in an asymptomatic average-risk population, and to determine whether providing a choice of tests increased participation...
- Extracolonic findings at CT colonography: evaluation of prevalence and cost in a screening populationThomas M Gluecker
Department of Radiology, Mayo Clinic Rochester, Rochester, Minnesota 55905, USA
Gastroenterology 124:911-6. 2003....
- Manual and automated polyp measurement comparison of CT colonography with optical colonoscopyJun Yong Jeong
Department of Radiology, Kangwon National University College of Medicine, 192 1 Hyoja 2 Dong, Chuncheon, Kangwon Do 200 701, Korea
Acad Radiol 15:231-9. 2008....
- Screening CT colonography in an asymptomatic average-risk Asian population: a 2-year experience in a single institutionSangbu An
Department of Radiology, Seoul National University Bundang Hospital, 300 Gumi dong, Bundang gu, Seongnam si, Gyeonggi do 463 707, Korea
AJR Am J Roentgenol 191:W100-6. 2008..The purpose of our study was to report the results of screening CT colonography (CTC) in an asymptomatic average-risk Asian population...
- Tagging-based, electronically cleansed CT colonography: evaluation of patient comfort and image readabilityMichael E Zalis
Division of Abdominal Imaging and Interventional Radiology, Department of Radiology, Massachusetts General Hospital, White 270, 55 Fruit Street, Boston, MA 02114, USA
Radiology 239:149-59. 2006..To prospectively compare the homogeneity, adequacy, and patient acceptance of nonionic iodine-based regimens with those of a barium-based regimen for computed tomographic (CT) colonography with electronic subtraction cleansing...
- Colorectal cancer: role of CT colonography in preoperative evaluation after incomplete colonoscopyEmanuele Neri
Diagnostic and Interventional Radiology, Department of Oncology, Transplants, and Advanced Technologies in Medicine, University of Pisa, Via Roma 67, I 56100 Pisa, Italy
Radiology 223:615-9. 2002..To evaluate computed tomographic (CT) colonography in patients with clinical suspicion of colorectal cancer and in whom colonoscopy was incomplete...
- Patient acceptance of CT colonography and conventional colonoscopy: prospective comparative study in patients with or suspected of having colorectal diseaseMaria H Svensson
Department of Diagnostic Radiology, Sahlgrenska University Hospital, Goteborg University, SE 413 45 Goteborg, Sweden
Radiology 222:337-45. 2002....
- Economic impact of extracolonic findings at computed tomographic colonographyMichael S Flicker
Department of Medicine, University of Chicago Hospitals, Chicago, IL 60637, USA
J Comput Assist Tomogr 32:497-503. 2008To determine the prevalence of extracolonic findings at computed tomographic colonography (CTC) and estimate the cost of the workup of newly discovered potentially significant lesions.
- Computed tomographic colonography to screen for colorectal cancer, extracolonic cancer, and aortic aneurysm: model simulation with cost-effectiveness analysisCesare Hassan
Gastroenterology and Digestive Endoscopy Unit, Nuovo Regina Margherita Hospital, and Department of Radiological Sciences, University Polo Pontino, Rome, Italy
Arch Intern Med 168:696-705. 2008..The efficacy and cost-effectiveness of this combined abdominal CT screening strategy are unknown...
- Extracolonic abnormalities discovered incidentally at CT colonography in a male populationJudy Yee
Department of Radiology, Veterans Affairs Medical Center 114 4150 Clement St, San Francisco, CA 94121, USA
Radiology 236:519-26. 2005....
- Noncathartic CT colonography with stool tagging: performance with and without electronic stool subtractionC Daniel Johnson
Department of Radiology, Mayo Clinic, 13400 E Shea Blve, Scottsdale, AZ 85259, USA
AJR Am J Roentgenol 190:361-6. 2008....
- Contrast-enhanced CT colonography in recurrent colorectal carcinoma: feasibility of simultaneous evaluation for metastatic disease, local recurrence, and metachronous neoplasia in colorectal carcinomaJ G Fletcher
Department of Radiology, Mayo Clinic, East 2B, 200 First St, S W, Rochester, MN 55905, USA
AJR Am J Roentgenol 178:283-90. 2002....
- Computed tomographic colonography in the diagnosis of colorectal cancerM Sabanli
Department of Surgery, Christchurch Hospital, Christchurch, New Zealand
Br J Surg 97:1291-4. 2010This study aimed to determine the sensitivity of computed tomographic colonography (CTC) in diagnosing colorectal cancer and to explore the reasons why these cancers are missed on CTC.
- CT colonography: false-negative interpretationsTaral Doshi
Department of Radiology, University of Chicago, Chicago, IL 60637, USA
Radiology 244:165-73. 2007..To retrospectively evaluate if false-negative interpretations at computed tomographic (CT) colonography are due to observer error...
- Polyp size and advanced histology in patients undergoing colonoscopy screening: implications for CT colonographyDavid Lieberman
Division of Gastroenterology and Hepatology, Oregon Health and Science University, Portland, Oregon 97239, USA
Gastroenterology 135:1100-5. 2008..The primary aim of this study was to determine rates of advanced histology in patients undergoing colorectal cancer screening whose largest polyp is 9 mm or less...
- Using CT colonography as a triage technique after a positive faecal occult blood test in colorectal cancer screeningM H Liedenbaum
Department of Radiology, Academic Medical Centre, Amsterdam, The Netherlands
Gut 58:1242-9. 2009..The purpose of this study was to evaluate the effectiveness of CT colonography (CTC) as a triage technique in faecal occult blood test (FOBT)-positive screening participants...
- Ileocecal valve imaging on computed tomographic colonographyD Regge
Radiology Department, Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3 95, I 10060 Candiolo, Italy
Abdom Imaging 30:20-5. 2005..The aim of our study was to describe the visualization, normal anatomy, and variations of the ileocecal valve with computed tomographic (CT) colonography to provide information about its optimal imaging...
- Feature-guided analysis for reduction of false positives in CAD of polyps for computed tomographic colonographyJanne Nappi
Department of Radiology, The University of Chicago, MC 2026, Chicago, Illinois 60637, USA
Med Phys 30:1592-601. 2003..The results indicate that feature-guided analysis is useful for achieving high sensitivity and a low FP rate in our CAD scheme...
- Variation of agreement in polyp size measurement between computed tomographic colonography and pathology assessment: clinical implicationsSamir Gupta
Division of Digestive and Liver Diseases, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390 8887, USA
Clin Gastroenterol Hepatol 6:220-7. 2008..We hypothesized that size measurement by CT colonography varies substantially compared with measurement by other methods...
- Assessing attitudes toward laxative preparation in colorectal cancer screening and effects on future testing: potential receptivity to computed tomographic colonographyTimothy J Beebe
Department of Health Sciences Research, College of Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
Mayo Clin Proc 82:666-71. 2007..The overall response rate was 49%. Analysis focused on the 759 respondents who were 50 years or older...
- Patient acceptance for CT colonography: what is the real issue?M Thomeer
Department of Radiology, University Hospitals, Herestraat 49, 3000 Leuven, Belgium
Eur Radiol 12:1410-5. 2002..Since the preparation plays a major decisive factor in the patient acceptance of virtual CT colonography, more attention should be given to fecal tagging...
- CT colonography and colonoscopy: assessment of patient preference in a 5-week follow-up studyRogier E van Gelder
Departments of Radiology, Social Medicine, and Gastroenterology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Radiology 233:328-37. 2004..To prospectively evaluate short- and midterm patient preference of computed tomographic (CT) colonography relative to colonoscopy in patients at increased risk for colorectal cancer and to elucidate determinants of preference...
- Prevalence and impact of extracolonic findings in patients undergoing CT colonographyRoshini C Rajapaksa
VA New York Harbor Healthcare System, New York University Medical Center Tisch Hospital, and New York University School of Medicine, New York 10010, USA
J Clin Gastroenterol 38:767-71. 2004..The aims of this study were to prospectively determine the prevalence of extracolonic findings in patients undergoing CT colonography, as well as to determine the clinical significance and consequences of these findings...
- CT colonography: optimisation, diagnostic performance and patient acceptability of reduced-laxative regimens using barium-based faecal taggingStuart A Taylor
Department of Specialist Radiology, University College Hospital, Euston Road, London, UK
Eur Radiol 18:32-42. 2008..Reduced preparation was tolerated better than full endoscopic preparation by 61%. Reduced-laxative CTC with three doses of 20 ml 40% barium sulphate is as effective as more complex regimens, retaining adequate diagnostic accuracy...
- CT colonography without catharsis: the ultimate study or useful additional option?Perry J Pickhardt
Gastroenterology 128:521-2; author reply 522-3. 2005
- CT colonography: digital subtraction bowel cleansing with mucosal reconstruction initial observationsMichael E Zalis
Department of Radiology, Division of Abdominal Imaging and Intervention, Massachusetts General Hospital, 55 Fruit St, White 270, Boston, MA 02114, USA
Radiology 226:911-7. 2003..Their performance for detection of lesions larger than 1 cm was similar to that with conventional CT colonography...
- Optimizing bowel preparation for multidetector row CT colonography: effect of Citramag and PicolaxS A Taylor
Department of Intestinal Imaging, St Mark s Hospital, Northwick Park, London, UK
Clin Radiol 58:723-32. 2003..To compare the adequacy and acceptability of Picolax and Citramag bowel cleansing agents for CT colonography...
- Image quality and patient acceptance of four regimens with different amounts of mild laxatives for CT colonographySebastiaan Jensch
Department of Radiology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
AJR Am J Roentgenol 191:158-67. 2008..The purpose of our study was to prospectively evaluate image quality and patient acceptance of CT colonography (CTC) with fecal tagging using different levels of catharsis...
- Occult colorectal polyps on CT colonography: implications for surveillanceRobert L MacCarty
Mayo Clinic, Mayo Medical School, Mary Clinic E 2, 200 First St SW, Rochester, MN 55905, USA
AJR Am J Roentgenol 186:1380-3. 2006..Differences in the prevalence of occult polyps in various populations might help explain the discordant reported sensitivities for polyp detection in published reports of CTC...
- Protrusion method for automated estimation of polyp size on CT colonographyC Van Wijk
Department of Imaging Science and Technology, Delft University of Technology, Lorentzweg 1, Delft, Zuid Holland, 2628 CJ, The Netherlands
AJR Am J Roentgenol 190:1279-85. 2008..The purpose of this study was to assess the accuracy and measurement variability of automated lesion measurement on CT colonography in comparison with manual 2D and 3D techniques under varying scanning conditions...
- Computed tomographic colonography compared with colonoscopy in patients at increased risk for colorectal cancerRogier E van Gelder
Department of Radiology, Academic Medical Center of the University of Amsterdam, Amsterdam, The Netherlands
Gastroenterology 127:41-8. 2004..We prospectively investigated the ability of CT colonography to identify individuals with large (>or=10 mm) colorectal polyps in consecutive patients at increased risk for colorectal cancer...
- CT colonography using 360-degree virtual dissection: a feasibility studyKristina T Johnson
Department of Radiology, Mayo Clinic Rochester, 200 First Street SW, Rochester, MN 55905, USA
AJR Am J Roentgenol 186:90-5. 2006....
- Advice for optimizing colonic distention and minimizing risk of perforation during CT colonographyAbraham H Dachman
Department of Radiology, MC 2026, University of Chicago, 5841 S Maryland Ave, Chicago, IL 60637, USA
Radiology 239:317-21. 2006
- CT colonography after fecal tagging with a reduced cathartic cleansing and a reduced volume of bariumPhilippe Lefere
Department of Radiology, Stedelijk Ziekenhuis, Bruggesteenweg 90, Roeselare B 8800, Belgium
AJR Am J Roentgenol 184:1836-42. 2005..The objective of our study was to assess the efficacy of fecal tagging with a small volume of barium in combination with a reduced cathartic cleansing before CT colonography...
- CT colonography features of sigmoid diverticular diseaseMarc J Gollub
Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10021, USA
Clin Imaging 29:200-6. 2005..The objective of this study is to assess the sigmoid distensibility during CT colonography (CTC) in patients with diverticular disease...
- Linear polyp measurement at CT colonography: in vitro and in vivo comparison of two-dimensional and three-dimensional displaysPerry J Pickhardt
Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
Radiology 236:872-8. 2005....
- Colonoscopy: virtual and optical--another look, another viewJoseph T Ferrucci
Radiology 235:13-6. 2005
- Colorectal polyps: detection with low-dose multi-detector row helical CT colonography versus two sequential colonoscopiesRiccardo Iannaccone
Department of Radiological Sciences, University of Rome La Sapienza, Rome, Italy
Radiology 237:927-37. 2005..To prospectively evaluate the diagnostic accuracy of low-radiation-dose computed tomographic (CT) colonography for detection of colorectal polyps by using two sequential colonoscopies, with the second colonoscopy as the reference standard...
- Computed tomographic virtual colonoscopy computer-aided polyp detection in a screening populationRonald M Summers
Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland 20892 1182, USA
Gastroenterology 129:1832-44. 2005..Our objective was to determine whether a computer program is as sensitive as optical colonoscopy for the detection of adenomatous colonic polyps on CT virtual colonoscopy...
- A comparison of primary two- and three-dimensional methods to review CT colonographyRogier E van Gelder
Department of Radiology, Academic Medical Center of the University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
Eur Radiol 17:1181-92. 2007..45), number of false positives: 33.3 and 15.6, and perceptive errors : 4 and 6 (p = 0.53). No significant differences were found in the detection of large and medium-sized polyps between primary 3D and 2D review...
- Differential diagnosis of polypoid lesions seen at CT colonography (virtual colonoscopy)Perry J Pickhardt
Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792, USA
Radiographics 24:1535-56; discussion 1557-9. 2004..A variety of useful techniques and observations can be used to increase the specificity of CT colonography for distinguishing false polyps from true polyps...
- Computerized tomographic colonography: performance evaluation in a retrospective multicenter settingC Daniel Johnson
Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA
Gastroenterology 125:688-95. 2003..The aim of this study was to assess the accuracy of computerized tomographic colonography for detecting clinically important colorectal neoplasia (polyps >or=10 mm in diameter) in a multi-institutional study...
- Contrast-enhanced computed tomographic colonography in the follow-up of colorectal cancer patients: a feasibility studyAndrea Laghi
Department of Radiology, University of Rome La Sapienza, Policlinico Umberto I, Rome, Italy
Eur Radiol 13:883-9. 2003..Contrast-enhanced CT colonography is a feasible alternative to both conventional colonoscopy and liver ultrasonography in the follow-up of patients operated on for colorectal cancer...
- Screening CT colonography: how I do itPerry J Pickhardt
Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
AJR Am J Roentgenol 189:290-8. 2007..The purpose of this article is to detail an approach to CT colonographic screening that has evolved at one institution...
- Characterization of lesions missed on interpretation of CT colonography using a 2D search methodThomas M Gluecker
Department of Radiology, Mayo Clinic Rochester, 200 First St SW, Rochester, MN 55905, USA
AJR Am J Roentgenol 182:881-9. 2004..We examined potential factors that may cause false-negative results on CT colonography examinations...
- Acceptance by patients of multidetector CT colonography compared with barium enema examinations, flexible sigmoidoscopy, and colonoscopyStuart A Taylor
Department of Intestinal Imaging, Intestinal Imaging Centre, Level 4V, St Mark s Hospital, Watford Rd, Northwick Park, London HA1 3UJ, United Kingdom
AJR Am J Roentgenol 181:913-21. 2003..Questionnaires were also completed by 140 patients undergoing double-contrast barium enema examinations. Responses were compared using Wilcoxon's matched pairs test and the Mann-Whitney test...
- CT colonography: effect of experience and training on reader performanceStuart A Taylor
Department of Intestinal Imaging, St Mark s Hospital, Watford Road, Northwick Park, London HA1 3UJ, UK
Eur Radiol 14:1025-33. 2004..There is considerable variation in the ability to report CT colonography. Prior experience in gastrointestinal radiology is a distinct advantage. Competence cannot be assumed even after directed training via a database of 50 cases...
- Quality and consistency in CT colonography and research reportingAbraham H Dachman
Radiology 230:319-23. 2004
- CT attenuation of colorectal polypoid lesions: evaluation of contrast enhancement in CT colonographyAytekin Oto
Department of Radiology, Hacettepe University School of Medicine, Sihhiye, 06100 Ankara, Turkey
Eur Radiol 13:1657-63. 2003....
- Linear polyp measurement at CT colonography: 3D endoluminal measurement with optimized surface-rendering threshold value and automated measurementSeong Ho Park
Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 388 1 Poongnap dong, Songpa Gu, Seoul 138 040, Korea
Radiology 246:157-67. 2008....
- Detection of colorectal lesions: lower-dose multi-detector row helical CT colonography compared with conventional colonoscopyRiccardo Iannaccone
Department of Radiological Sciences, University of Rome La Sapienza, Policlinico Umberto I, Viale Regina Elena 324, Rome, Italy 00161
Radiology 229:775-81. 2003..To compare the performance of lower-dose multi-detector row helical computed tomographic (CT) colonography with that of conventional colonoscopy in the detection of colorectal lesions...
- CT colonography with reduced bowel preparation after incomplete colonoscopy in the elderlyF Iafrate
Department of Radiological Sciences, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
Eur Radiol 18:1385-95. 2008..CTC without cathartic preparation is a technically feasible and safe procedure to complete a colonic study in the elderly, prompting its use in clinical practice...
- Diagnostic performance of CT colonography for the detection of colorectal polypsJi Young Yun
Department of Radiology, Song Do Hospital, Seoul, Korea
Korean J Radiol 8:484-91. 2007..To investigate the diagnostic value of CT colonography for the detection of colorectal polyps...
- A MicroRNA Approach to Screen for Sporadic Colon Cancer Exfoliately in Human StooFarid E Ahmed; Fiscal Year: 2010..However, larger well designed clinical studies are needed to corroborate initial results. ..
- Interactive Multimedia Intervention to Improve Colonoscopy and Bowel Prep AdhereJOHN MATTHEW INADOMI; Fiscal Year: 2012..of the primary strategy (fecal occult blood testing, sigmoidoscopy, colonoscopy, fecal DNA, computed tomographic colonography [virtual colonoscopy]) colonoscopy is required to evaluate positive screening tests and to detect or ..
- Robust BCT for Clinical UseDAVID KOPPERDAHL; Fiscal Year: 2010..N. Diagnostics'business, and result in an important advance in the preventative care and treatment of osteoporosis. ..
- Analyses of Progression to Colon Cancer in a Spectrum of PathwaysWILLIAM FRANKLIN DOVE; Fiscal Year: 2012..Signatures that can discriminate between tumors that vary in neoplastic potential are particularly important to discern. ..
- In Vivo Detection of Flat Colorectal Neoplasms with CT ColonographyJANNE JOHANNES NAPPI; Fiscal Year: 2010..Studies have indicated that computed tomographic colonography (CTC) has performance comparable to that of OC in the detection of polypoid neoplasms of clinically ..
- Computerized Detection of Polyps in CT ColonographyHiroyuki Yoshida; Fiscal Year: 2013..Early removal of such neoplasms has been observed to reduce the occurrence of colorectal carcinoma. Computed tomographic colonography (CTC), or virtual colonoscopy, has become an alternative technique for providing mass screening for ..
- CT Colonoscopy Screening for CRC:Comparative Effectiveness vs Traditional ModelsG Scott Gazelle; Fiscal Year: 2010..e., those age 50 or older) adheres to current screening guidelines. Computed tomographic colonography (CTC) is a promising technique for colorectal cancer screening...
- Variations in Colonoscopy Screening: A Population Based StudyLynn F Butterly; Fiscal Year: 2012..To spur innovations, physician and community stakeholders will be engaged in interpreting the findings and developing actions needed to increase its quality and appropriate use. ..
- Diagnosis of non-polypoid neoplasia of the colon with CT colonographyHiroyuki Yoshida; Fiscal Year: 2010..b>Computed tomographic colonography (CTC), or virtual colonoscopy, is an emerging alternative screening tool for colon cancer in average ..
- Comparative Effectiveness of Virtual and Optical Colonoscopy for CRC SurveillanceDavid S Weinberg; Fiscal Year: 2013....
- NA-MIC virtual colonoscopyHiroyuki Yoshida; Fiscal Year: 2012..Virtual colonoscopy (VC), also known as computed tomographic colonography (CTC), is a promising technique for colon cancer screening...
- Computerized Detection of Polyps in CT ColonographyHiroyuki Yoshida; Fiscal Year: 2009..b>Computed tomographic colonography (CTC), also known as virtual colonoscopy (VC), is a promising technique for colon cancer screening...
- Ultra-Low Radiation Dose Body CT ImagingPerry Pickhardt; Fiscal Year: 2013..The successful completion of the project will also provide a methodological paradigm and unique CT data sets needed to clinically evaluate other ultra-low-dose CT imaging reconstruction methods. ..
- Dual-energy Electronic-cleansing CT Colonography for Colon Cancer ScreeningHiroyuki Yoshida; Fiscal Year: 2013..b>Computed tomographic colonography (CTC), or virtual colonoscopy, has become an effective technique for non-invasive colon cancer ..
- THREE DIMENSIONAL CT COLONOGRAPHYChristopher Beaulieu; Fiscal Year: 2007..abstract_text> ..
- Morphological Lesion Detection in CT ColonographyDAVID KYNOR; Fiscal Year: 2007..We will also work with leading radiologists and a gasteroenterologist to optimize the clinical utility of our work. ..
- Morphological Lesion Detection in CT ColonographyDAVID KYNOR; Fiscal Year: 2003..The tools developed under this program may also assist the clinician in subtyping lesions and will provide a powerful research tool for quantifying lesion growth over time. ..
- Regulation of Stellate Cell ContractilityDon Rockey; Fiscal Year: 2008..Physiologic endpoints will be an important focus. The proposed studies will shed light on the molecular basis of stellate cell contractility and moreover have direct relevance to human liver disease. ..
- PROSPECTIVE COMPARISON OF COLONIC IMAGING TESTDon Rockey; Fiscal Year: 2001..b>Computed tomographic colonography (otherwise known as virtual colonoscopy), has been recently introduced as an alternative colonic ..
- PATHOGENESIS OF HEPATIC FIBROSIS AND PORTAL HYPERTENSIONDon C Rockey; Fiscal Year: 2010..These studies have direct relevance to human liver disease and will lead to new approaches for the treatment of hepatic fibrosis and portal hypertension as well as other forms of fibrosing injury. ..
- Nitric Oxide and the LiverDon Rockey; Fiscal Year: 2003..The dates of the entire AASLD scientific meeting are November 3rd to November 5th. The participants will be invited speakers and attendees of the annual 2002 AASLD meeting. ..
- CORI: Consortium Expansion and Database EnhancementDavid Lieberman; Fiscal Year: 2004....
- 3D Massive Training ANN for CAD for Colon Cancer in CT ColonographyKenji Suzuki; Fiscal Year: 2010..3D MTANN) for a computer-aided diagnostic (CAD) scheme for detection of colorectal polyps in computed tomographic colonography (CTC)...
- Screening for colortectal cancer in an Asian Community CenterDavid Lieberman; Fiscal Year: 2008..This is a new paradigm for screening, which takes advantage of the trust and cultural awareness that exists at the community center and does not rely on the primary care provider. [unreadable] [unreadable] [unreadable] [unreadable]..
- High-Performance Pattern Analysis for CT ColonographyPeter Santago; Fiscal Year: 2008unreadable] DESCRIPTION (provided by applicant): Computed tomographic colonography (CTC) is a rapidly developing screening method that could significantly improve colorectal cancer prevention...
- CTC of the Unprepped Colon: Optimization and ValidationC Johnson; Fiscal Year: 2006..Data generated should provide for a balanced appraisal of the value and practicality of this revolutionary and potentially powerful unique screening tool. ..
- Colon Cancer Screening Augmented by Image ProcessingMichael Zalis; Fiscal Year: 2006..The proposed research will serve as basis for the design of a larger, screening-cohort evaluation of CTC using these image-processing techniques. ..
- Cathartic-Free Dual-Energy CT ColonographyJeff Fidler; Fiscal Year: 2006..The investigators have world-class expertise and resources in CT colonography, dual energy algorithms, and CT system calibrations. [unreadable] [unreadable]..
- COMPUTERIZED DETECTION OF PULMONARY NODULESHiroyuki Yoshida; Fiscal Year: 2002..Such a high-performance CAD scheme should advance the early detection of pulmonary nodules, and therefore has the potential to improve the prognosis for patients. ..
- Change Detection in Serial MRIs of Patients with Brain GliomasBradley Erickson; Fiscal Year: 2008..It is our hope that in the future, a measurement method superior to or as an adjunct to human observation will become available, though this study will not attempt to go that far. [unreadable] [unreadable] [unreadable]..
- AUTOMATIC CORRECTION OF MOTION ARTIFACTS IN MR IMAGESArmando Manduca; Fiscal Year: 2007..They represent perhaps the most flexible and universally applicable techniques for the correction of motion (and other) artifacts in MR imaging. ..
- Cancer Risks Attributable To Radiation from Pediatric CTDavid Brenner; Fiscal Year: 2006..The target audiences will be radiologists, pediatricians, family physicians, and the CT industry. We will use telephone interviews supplemented with survey questions, to aid in web content decisions. ..
- Planning Grant for SOD III Multicenter TrialPeter Cotton; Fiscal Year: 2004..This trial will answer several of the important questions raised by the expert panel at the NIH State of the Science of ERCP Conference, held in January. ..
- Modeling Clinical and Functional Depression OutcomesCarolyn Rutter; Fiscal Year: 2003..A key component of univariate modeling is Multivariate models will build on these univariate models. Population-average estimates will be calculated using Monte-Carlo integration. ..
- High Stability Accelerator for Sub-Cellular MicrobeamDavid Brenner; Fiscal Year: 2003..We have considerably more demand for microbeam time than we can cope with, primarily because of limited physicist manpower. ..
- RADIOLOGICAL RESEARCH ACCELERATOR FACILITY (RARAF)David Brenner; Fiscal Year: 2002..abstract_text> ..
- QUANTITATIVE SPECT RECONSTRUCTION OF THE CHESTJEROME LIANG; Fiscal Year: 2001..Diagnosis of CAD, as well as pulmonary embolism and breast cancer will be assessed ..
- AUTOMATIC CORRECTION OF MOTION ARTIFACTS IN MR IMAGESArmando Manduca; Fiscal Year: 2001..They are applicable to both conventional and fast scan applications, and may be adaptable to many non- motion sources of artifacts as well. ..