Perry J Pickhardt

Summary

Affiliation: University of Wisconsin
Country: USA

Publications

  1. ncbi Computed tomography colonography: emerging evidence to further support clinical effectiveness
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Curr Opin Gastroenterol 29:55-9. 2013
  2. ncbi Missed lesions at CT colonography: lessons learned
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Abdom Imaging 38:82-97. 2013
  3. ncbi Abdominal CT with model-based iterative reconstruction (MBIR): initial results of a prospective trial comparing ultralow-dose with standard-dose imaging
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 199:1266-74. 2012
  4. ncbi CT colonography: pitfalls in interpretation
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792 3252, USA
    Radiol Clin North Am 51:69-88. 2013
  5. ncbi Visceral adiposity and hepatic steatosis at abdominal CT: association with the metabolic syndrome
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, 53792 3252, USA
    AJR Am J Roentgenol 198:1100-7. 2012
  6. ncbi Randomized controlled trial evaluating participation and yield of colonoscopy versus CT colonography screening
    Perry J Pickhardt
    Gastrointestinal Imaging, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Expert Rev Med Devices 9:107-10. 2012
  7. ncbi CT colonography to screen for colorectal cancer and aortic aneurysm in the Medicare population: cost-effectiveness analysis
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 192:1332-40. 2009
  8. ncbi Positive predictive value for polyps detected at screening CT colonography
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792 3252, USA
    Eur Radiol 20:1651-6. 2010
  9. ncbi Clinical management of small (6- to 9-mm) polyps detected at screening CT colonography: a cost-effectiveness analysis
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 191:1509-16. 2008
  10. ncbi Unsuspected extracolonic findings at screening CT colonography: clinical and economic impact
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 249:151-9. 2008

Detail Information

Publications111 found, 100 shown here

  1. ncbi Computed tomography colonography: emerging evidence to further support clinical effectiveness
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Curr Opin Gastroenterol 29:55-9. 2013
    ..The aim of this review is to provide an update on the recent and emerging data that further supports the clinical effectiveness of CTC...
  2. ncbi Missed lesions at CT colonography: lessons learned
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Abdom Imaging 38:82-97. 2013
    ....
  3. ncbi Abdominal CT with model-based iterative reconstruction (MBIR): initial results of a prospective trial comparing ultralow-dose with standard-dose imaging
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 199:1266-74. 2012
    ..The purpose of this study was to report preliminary results of an ongoing prospective trial of ultralow-dose abdominal MDCT...
  4. ncbi CT colonography: pitfalls in interpretation
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792 3252, USA
    Radiol Clin North Am 51:69-88. 2013
    ..Tips and pointers for how to effectively handle these potential pitfalls are included...
  5. ncbi Visceral adiposity and hepatic steatosis at abdominal CT: association with the metabolic syndrome
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, 53792 3252, USA
    AJR Am J Roentgenol 198:1100-7. 2012
    ..Visceral adiposity and hepatic steatosis may correlate with the metabolic syndrome but are not currently among the diagnostic criteria. We evaluated these features at unenhanced MDCT...
  6. ncbi Randomized controlled trial evaluating participation and yield of colonoscopy versus CT colonography screening
    Perry J Pickhardt
    Gastrointestinal Imaging, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Expert Rev Med Devices 9:107-10. 2012
    ..The landmark trial under discussion adds key data in terms of participation rates for CTC screening relative to colonoscopy screening...
  7. ncbi CT colonography to screen for colorectal cancer and aortic aneurysm in the Medicare population: cost-effectiveness analysis
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 192:1332-40. 2009
    ..CTC can also accurately detect abdominal aortic aneurysm (AAA). This collaborative gastroenterology-radiology project evaluated the cost-effectiveness and clinical efficacy of CTC in the Medicare population...
  8. ncbi Positive predictive value for polyps detected at screening CT colonography
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792 3252, USA
    Eur Radiol 20:1651-6. 2010
    ..To determine the positive predictive value (PPV) for polyps detected at CT colonography (CTC)...
  9. ncbi Clinical management of small (6- to 9-mm) polyps detected at screening CT colonography: a cost-effectiveness analysis
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 191:1509-16. 2008
    ..The primary aim of this model analysis was to compare the clinical and economic impacts of immediate polypectomy versus 3-year CT colonography (CTC) surveillance for small (6- to 9-mm) polyps detected at CTC screening...
  10. ncbi Unsuspected extracolonic findings at screening CT colonography: clinical and economic impact
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 249:151-9. 2008
    ..To evaluate the frequency and estimated costs of additional diagnostic workup for extracolonic findings detected at computed tomographic (CT) colonography in a large screening cohort...
  11. ncbi Low rates of cancer or high-grade dysplasia in colorectal polyps collected from computed tomography colonography screening
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Clin Gastroenterol Hepatol 8:610-5. 2010
    ..We assess the rates of cancer and high-grade dysplasia among patients found to have small (6-9 mm) and large (>or=10 mm) colorectal polyps at CTC...
  12. ncbi Polyp detection at 3-dimensional endoluminal computed tomography colonography: sensitivity of one-way fly-through at 120 degrees field-of-view angle
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792 3252, USA
    J Comput Assist Tomogr 33:631-5. 2009
    ....
  13. ncbi Incidental adnexal masses detected at low-dose unenhanced CT in asymptomatic women age 50 and older: implications for clinical management and ovarian cancer screening
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, Madison, WI 53792 3252, USA
    Radiology 257:144-50. 2010
    ..To determine the prevalence, work-up, and outcomes of indeterminate adnexal masses identified at low-dose unenhanced computed tomography (CT) in asymptomatic women age 50 and older undergoing colonography screening...
  14. ncbi Left-sided polyps detected at screening CT colonography: do we need complete optical colonoscopy for further evaluation?
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 259:429-34. 2011
    ..To estimate the relative yield of therapeutic flexible sigmoidoscopy compared with complete optical colonoscopy for isolated left-sided polyps (≥6 mm in diameter) identified at screening computed tomographic (CT) colonography...
  15. ncbi Colorectal cancer: CT colonography and colonoscopy for detection--systematic review and meta-analysis
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 259:393-405. 2011
    ..To perform a systematic review and meta-analysis of published studies assessing the sensitivity of both computed tomographic (CT) colonography and optical colonoscopy (OC) for colorectal cancer detection...
  16. ncbi Cost-effectiveness of colorectal cancer screening with computed tomography colonography: the impact of not reporting diminutive lesions
    Perry 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...
  17. ncbi Diagnostic performance of multidetector computed tomography for suspected acute appendicitis
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Ann Intern Med 154:789-96, W-291. 2011
    ..Use of preoperative computed tomography for suspected acute appendicitis has dramatically increased since the introduction of multidetector CT (MDCT) scanners...
  18. ncbi Simultaneous screening for osteoporosis at CT colonography: bone mineral density assessment using MDCT attenuation techniques compared with the DXA reference standard
    Perry J Pickhardt
    University of Wisconsin School of Medicine and Public Health, Madison, WI 53792 3252, USA
    J Bone Miner Res 26:2194-203. 2011
    ..It is concluded that both phantomless QCT and simple ROI attenuation measurements of the lumbar spine are effective for BMD screening at CTC with high sensitivity for osteoporosis, as defined by the DXA T-score...
  19. ncbi Noninvasive radiologic imaging of the large intestine: a valuable complement to optical colonoscopy
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Curr Opin Gastroenterol 26:61-8. 2010
    ..The aim of this review is to provide an update on current and emerging clinical capabilities for a variety of radiologic diagnostic imaging tools for evaluating the colon and rectum...
  20. ncbi Should small sliding hiatal hernias be reported at CT colonography?
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 196:W400-4. 2011
    ..The objective of our study was to determine whether colonic distention at CT colonography (CTC) induces small incidental sliding hiatal hernias...
  21. ncbi Small and diminutive polyps detected at screening CT colonography: a decision analysis for referral to colonoscopy
    Perry 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 190:136-44. 2008
    ..The objective of this study was to assess the clinical and economic impact of colonoscopic referral for small and diminutive polyps detected at CT colonography (CTC) screening...
  22. ncbi CT colonography versus colonoscopy for the detection of advanced neoplasia
    David H Kim
    Department of Radiology, University of Wisconsin Medical School, Madison 53792 3252, USA
    N Engl J Med 357:1403-12. 2007
    ..Advanced 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...
  23. ncbi Hepatic steatosis (fatty liver disease) in asymptomatic adults identified by unenhanced low-dose CT
    Cody J Boyce
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 194:623-8. 2010
    ..S. adult population using attenuation values at unenhanced CT as the reference standard. We also assessed the utility of known clinical risk factors for diagnosis...
  24. ncbi Accuracy of routine nontargeted CT without colonography technique for the detection of large colorectal polyps and cancer
    Bora Ozel
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Dis Colon Rectum 53:911-8. 2010
    ..To assess the accuracy of routine contrast-enhanced computed tomography for the detection of large colorectal polyps and cancer...
  25. ncbi Evaluation of submucosal lesions of the large intestine: part 2. Nonneoplastic causes
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, 600 Highland Ave, E3 311 Clinical Science Center, Madison, WI 53792 3252, USA
    Radiographics 27:1693-703. 2007
    ....
  26. ncbi Primary 2D versus primary 3D polyp detection at screening CT colonography
    Perry 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 189:1451-6. 2007
    ..Our goal was to assess the sensitivity of primary 2D polyp detection with cases from the Department of Defense CTC screening trial and compare results with the primary 3D evaluation and previous 2D CTC trials...
  27. ncbi Five year colorectal cancer outcomes in a large negative CT colonography screening cohort
    David H Kim
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Eur Radiol 22:1488-94. 2012
    ..To assess the 5-year incidence of clinically presenting colorectal cancers following a negative CT colonography (CTC) screening examination, as few patient outcome data regarding a negative CTC screening result exist...
  28. ncbi Low-volume hybrid bowel preparation combining saline laxatives with oral contrast agents versus standard polyethylene glycol lavage for colonoscopy
    Edward M Lawrence
    University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    Dis Colon Rectum 53:1176-81. 2010
    ..The aim of this study was to compare the quality of low-volume hybrid computed tomography colonography bowel preparation, using both laxatives and oral contrast, with standard polyethylene glycol lavage...
  29. ncbi Screening CT colonography: how I do it
    Perry 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
    ..CT colonography is ideally suited for widespread screening of asymptomatic adults and has become an integral component of the screening efforts at my institution since local third-party coverage was initiated...
  30. ncbi CT colonography: performance and program outcome measures in an older screening population
    David H Kim
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 254:493-500. 2010
    ..To evaluate computed tomographic (CT) colonography performance and program outcome measures in an older cohort (65-79 years) of an established large-scale colorectal cancer screening program...
  31. ncbi Findings on optical colonoscopy after positive CT colonography exam
    Daniel Cornett
    Section of Gastroenterology and Hepatology, Department of Medicine, University of Wisconsin Madison School of Medicine and Public Health, Madison, Wisconsin 53792 5124, USA
    Am J Gastroenterol 103:2068-74. 2008
    ..The aim of this study is to evaluate the findings on optical colonoscopy (OC) after a positive CT colonography (CTC) exam and characterize the type of polyps seen on OC but not reported by CTC...
  32. ncbi Is there sufficient MDCT capacity to provide colorectal cancer screening with CT colonography for the U.S. population?
    Perry 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 190:1044-9. 2008
    ..Our aim was to assess the ability of the available MDCT capacity in the United States to provide population screening with CTC...
  33. ncbi Reproducibility of tumor volume measurement at microCT colonography in living mice
    Benjamin Y Durkee
    Department of Medical Physics, 1400 University Avenue, University of Wisconsin, Madison, WI 53706, USA
    Acad Radiol 15:334-41. 2008
    ..The precision and accuracy of volumetric measurements were determined to assess whether changes in tumor volume over time were readily detectable...
  34. ncbi Flat colorectal lesions in asymptomatic adults: implications for screening with CT virtual colonoscopy
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, Madison, 600 Highland Ave, E3/311 Clinical Science Center, Madison, WI 53792-3252, USA
    AJR Am J Roentgenol 183:1343-7. 2004
    ..The sensitivity of virtual colonoscopy for detecting flat lesions was similar to that of polypoid lesions. These results indicate that flat lesions are not a significant drawback for virtual colonoscopy screening...
  35. ncbi Colorectal polyps: stand-alone performance of computer-aided detection in a large asymptomatic screening population
    Edward M Lawrence
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, Madison, WI 53792 3252, USA
    Radiology 256:791-8. 2010
    ..To evaluate stand-alone performance of computer-aided detection (CAD) for colorectal polyps of 6 mm or larger at computed tomographic (CT) colonography in a large asymptomatic screening cohort...
  36. ncbi Performing an additional decubitus series at CT colonography
    Christopher M Buchach
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Clinical Science Center, Madison, 53792 3252, USA
    Abdom Imaging 36:538-44. 2011
    ..To determine the rate and associated factors for acquiring a decubitus series at CT colonography (CTC), in addition to the standard supine and prone series...
  37. ncbi Location of adenomas missed by optical colonoscopy
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Ann Intern Med 141:352-9. 2004
    ..Previous estimates of the adenoma miss rate with optical colonoscopy (OC) are hindered by the use of OC as its own reference standard...
  38. ncbi Imaging evaluation of complications at optical colonoscopy
    David H Kim
    Department of Radiology, University of Wisconsin Medical School, Madison, WI 53792 3252, USA
    Curr Probl Diagn Radiol 37:165-77. 2008
    ..Emphasis will be placed on cross-sectional imaging given the improved sensitivity and specificity over conventional radiography...
  39. ncbi Surface visualization at 3D endoluminal CT colonography: degree of coverage and implications for polyp detection
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, Madison, Wisconsin, USA
    Gastroenterology 130:1582-7. 2006
    ....
  40. ncbi Screening for colorectal neoplasia with CT colonography: initial experience from the 1st year of coverage by third-party payers
    Perry J Pickhardt
    Department of Radiology and Section of Gastroenterology and Hepatology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 241:417-25. 2006
    ..To evaluate our experience in the 1st year of computed tomographic (CT) colonography screening since the initiation of local third-party payer coverage...
  41. ncbi Prevalence of urolithiasis in asymptomatic adults: objective determination using low dose noncontrast computerized tomography
    Cody J Boyce
    University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792 3252, USA
    J Urol 183:1017-21. 2010
    ..Unenhanced computerized tomography represents the gold standard for detection. We evaluated the prevalence and symptomatic incidence of urolithiasis in a large cohort of asymptomatic adults using noncontrast computerized tomography...
  42. ncbi Colorectal and extracolonic cancers detected at screening CT colonography in 10,286 asymptomatic adults
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 255:83-8. 2010
    ....
  43. ncbi Impact of a CT colonography screening program on endoscopic colonoscopy in clinical practice
    Darren C Schwartz
    Department of Medicine, Section of Gastroenterology and Hepatology, University of Wisconsin Medical School Madison, Madison, WI 53792 5124, USA
    Am J Gastroenterol 103:346-51. 2008
    ..The potential effect of CT colonography (CTC) on endoscopic colonoscopy (EC) has been the topic of much speculation. The aim of this study was to evaluate the impact of a CTC screening program on colonoscopy in clinical practice...
  44. ncbi Asymptomatic pneumatosis at CT colonography: a benign self-limited imaging finding distinct from perforation
    Perry 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 190:W112-7. 2008
    ..The purpose of our study was to report the prevalence and clinical course of colonic pneumatosis at CT colonography (CTC)...
  45. ncbi CT colonography with computer-aided polyp detection: volume and attenuation thresholds to reduce false-positive findings owing to the ileocecal valve
    Ronald M Summers
    Department of Radiology, National Institutes of Health, 10 Center Dr, Bldg 10, Rm 1C351, MSC 1182, Bethesda, MD 20892-1182, USA
    Radiology 241:426-32. 2006
    ..Differences in sensitivity and specificity in the detection of polyps between the sets were not significant. CONCLUSION: Volume and average CT attenuation thresholds can help differentiate most ICVs from true polyps...
  46. ncbi Venous malformations mimicking multiple mucosal polyps on screening CT colonography
    Andrew D Lee
    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 186:1113-5. 2006
  47. ncbi Reduced image noise at low-dose multidetector CT of the abdomen with prior image constrained compressed sensing algorithm
    Meghan G Lubner
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 31 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 260:248-56. 2011
    ..To assess the effect of prior image constrained compressed sensing (PICCS) on noise reduction and image quality at low-dose computed tomography (CT)...
  48. ncbi Bowel preparation for CT colonography: blinded comparison of magnesium citrate and sodium phosphate for catharsis
    Zachary S Borden
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, G3 310 CSC MC 3252, Madison, WI 53792 3252, USA
    Radiology 254:138-44. 2010
    ..To compare colonic cleansing and fluid retention of double-dose magnesium citrate with those of single-dose sodium phosphate in patients undergoing computed tomographic (CT) colonography...
  49. ncbi Renal cell carcinoma: attenuation values on unenhanced CT
    B Dustin Pooler
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, 53792 3252, USA
    AJR Am J Roentgenol 198:1115-20. 2012
    ..The purpose of this study is to analyze the attenuation values of pathologically proven renal cell carcinomas (RCCs) on unenhanced CT and to determine the range of values wherein malignancy should be considered...
  50. ncbi Primary neoplasms of the appendix manifesting as acute appendicitis: CT findings with pathologic comparison
    Perry J Pickhardt
    Department of Radiology, National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889 5600, USA
    Radiology 224:775-81. 2002
    ..To evaluate the computed tomographic (CT) findings in patients with acute appendicitis related to an underlying appendiceal neoplasm...
  51. ncbi Prospective blinded comparison of polyp size on computed tomography colonography and endoscopic colonoscopy
    Courtney Barancin
    Section of Gastroenterology and Hepatology, Department of Medicine, University of Wisconsin Madison School of Medicine and Public Health, Madison, Wisconsin 53792, USA
    Clin Gastroenterol Hepatol 9:443-5. 2011
    ..We compared polyp size as seen on CTC with endoscopic visualization, in vivo probe measurement, and ex vivo size before and after fixation...
  52. ncbi Characteristics of advanced adenomas detected at CT colonographic screening: implications for appropriate polyp size thresholds for polypectomy versus surveillance
    David H Kim
    Department of Radiology, University of Wisconsin Medical School, 600 Highland Ave, E3 311 Clinical Science Center, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 188:940-4. 2007
    ..These observations may be a basis for formulation of polypectomy thresholds and CTC surveillance strategies...
  53. ncbi Increasing computer-aided detection specificity by projection features for CT colonography
    Hongbin Zhu
    Department of Radiology, State University of New York, Stony Brook, New York 11794, USA
    Med Phys 37:1468-81. 2010
    ..This study aims to develop projection-based features which characterize true and false positives to increase the specificity while maintaining high sensitivity in detecting colonic polyps...
  54. ncbi Evaluation of submucosal lesions of the large intestine: part 1. Neoplasms
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, 600 Highland Ave, E3 311 Clinical Science Center, Madison, WI 53792 3252, USA
    Radiographics 27:1681-92. 2007
    ..It is important that radiologists be familiar with the multimodality imaging appearances of such entities so that neoplasms--especially those that are malignant--can be accurately identified and characterized and effectively managed...
  55. ncbi Diagnostic performance of primary 3-dimensional computed tomography colonography in the setting of colonic diverticular disease
    Matthew F Sanford
    Department of Radiology, University of Wisconsin Medical School, Madison, 53792, USA
    Clin Gastroenterol Hepatol 4:1039-47. 2006
    ..7% (61/72), respectively (not significant, P > or = .15). CONCLUSIONS: CDD was common in this asymptomatic screening population, but its presence did not degrade the diagnostic performance of primary 3D CTC for polyp detection...
  56. ncbi Automated seed placement for colon segmentation in computed tomography colonography
    Gheorghe Iordanescu
    Department of Radiology, National Institutes of Health, Building 10, Room 1C660, 10 Center Drive MSC 1182, Bethesda, MD 20892-1182, USA
    Acad Radiol 12:182-90. 2005
    ..CONCLUSION: Fully automatic seed placement for colonic segmentation is feasible in the majority of cases without seeding of undesired extracolonic air...
  57. ncbi The effect of diagnostic confidence on the probability of optical colonoscopic confirmation of potential polyps detected on CT colonography: prospective assessment in 1,339 asymptomatic adults
    Perry 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 183:1661-5. 2004
    ..Although polyp size represents the primary criterion for CTC screening algorithms, this data could help guide the decision to opt for noninvasive CTC surveillance versus optical colonoscopy for polypectomy...
  58. ncbi Computed tomographic virtual colonoscopy to screen for colorectal neoplasia in asymptomatic adults
    Perry 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...
  59. ncbi CT colonography (virtual colonoscopy): a practical approach for population screening
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiol Clin North Am 45:361-75. 2007
    ..It discusses the entire spectrum from program set-up through patient disposition following CTC examination. The authors hope this article will provide a roadmap for radiologists who wish to institute a CTC screening program...
  60. ncbi Anatomic factors predictive of incomplete colonoscopy based on findings at CT colonography
    Meghan E Hanson
    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 189:774-9. 2007
    ..Reasons for failure to reach the cecum at optical colonoscopy are multifactorial. The purpose of this study was to compare CT colonography (CTC) findings in patients with complete versus those with incomplete optical colonoscopy...
  61. ncbi Primary neoplasms of the appendix: radiologic spectrum of disease with pathologic correlation
    Perry J Pickhardt
    Department of Radiology, National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889 5600, USA
    Radiographics 23:645-62. 2003
    ..CT appears to be the modality of choice whenever an appendiceal mass is suspected. CT will help rule out or confirm an appendiceal tumor and may suggest a more specific diagnosis...
  62. ncbi Incidental finding of renal masses at unenhanced CT: prevalence and analysis of features for guiding management
    Stacy D O'Connor
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, 53792 3252, USA
    AJR Am J Roentgenol 197:139-45. 2011
    ..The purposes of this study were to investigate the frequency and clinical relevance of the incidental finding of renal masses at low-dose unenhanced CT and to analyze the results for features that can be used to guide evaluation...
  63. ncbi Polyp volume versus linear size measurements at CT colonography: implications for noninvasive surveillance of unresected colorectal lesions
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, 600 Highland Ave, Madison, WI 53792, USA
    AJR Am J Roentgenol 186:1605-10. 2006
    ..CONCLUSION: Because changes in polyp volume are amplified compared with linear dimension, volume measurement rather than diameter measurement will better allow detection of small incremental changes in polyp size using CTC...
  64. ncbi Performance of CT colonography for detecting small, diminutive, and flat polyps
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Gastrointest Endosc Clin N Am 20:209-26. 2010
    ..However, the actual clinical relevance of small, diminutive, and flat polyps has also been the source of debate. This article addresses these controversial and often misunderstood issues...
  65. ncbi Extracolonic tumors of the gastrointestinal tract detected incidentally at screening CT colonography
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, Wisconsin 53792 3252, USA
    Dis Colon Rectum 50:56-63. 2007
    ..The aim of this article is to report our experience with incidental detection of extracolonic tumors of the gastrointestinal tract identified prospectively at screening CT colonography...
  66. ncbi Radiologists should read CT colonography
    David H Kim
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 600 Highland Avenue, Madison, WI 53792 3252, USA
    Gastrointest Endosc Clin N Am 20:259-69. 2010
    ..The role of extracolonic evaluation as an integral part of this examination is also covered. Within this context, the question of whether a radiologist or gastroenterologist is better suited to interpret this examination is explored...
  67. ncbi Three-dimensional endoluminal CT colonography (virtual colonoscopy): comparison of three commercially available systems
    Perry J Pickhardt
    Department of Radiology, National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889-5600, USA
    AJR Am J Roentgenol 181:1599-606. 2003
    ..Of the three, effective time-efficient primary 3D evaluation appears to be feasible only with the V3D-Colon system...
  68. ncbi Effect of colonic distention on superiority of supine versus prone views in screening computed tomographic colonography
    Steven J Michel
    Department of Radiology, University of Wisconsin Medical School, Madison, WI, USA
    Clin Imaging 31:325-8. 2007
    ..The purpose of this study was to evaluate the effect of colonic distention in computed tomographic colonography (CTC)...
  69. ncbi Inverted appendiceal stumps simulating large pedunculated polyps on screening CT colonography
    Tyler M Prout
    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 186:535-8. 2006
  70. ncbi CT-guided lung biopsies: pleural blood patching reduces the rate of chest tube placement for postbiopsy pneumothorax
    Jason M Wagner
    Department of Radiology, University of Wisconsin, 600 Highland Ave, Mail Code 3252, E3 311 CSC, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 197:783-8. 2011
    ..The objective of our study was to determine whether pleural blood patching reduces the need for chest tube placement and hospital admission for pneumothorax complicating CT-guided percutaneous lung biopsy...
  71. ncbi Colorectal cancer: managing diminutive polyps-what is the optimal approach?
    David H Kim
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Nat Rev Gastroenterol Hepatol 8:129-31. 2011
    ....
  72. ncbi Prospective blinded trial comparing 45-mL and 90-mL doses of oral sodium phosphate for bowel preparation before computed tomographic colonography
    David H Kim
    Department of Radiology University of Wisconsin Medical School, Madison, WI 53792 3252, USA
    J Comput Assist Tomogr 31:53-8. 2007
    ..To compare the efficacy of computed tomographic colonography (CTC) bowel preparation using single- (45 mL) versus double-dose sodium phosphate...
  73. ncbi Nonadenomatous polyps at CT colonography: prevalence, size distribution, and detection rates
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    Radiology 232:784-90. 2004
    ..To prospectively investigate with computed tomographic (CT) colonography the prevalence and size distribution of nonadenomatous polyps in asymptomatic adults and to compare the detection rates of adenomatous and nonadenomatous polyps...
  74. ncbi Flat (nonpolypoid) colorectal lesions identified at CT colonography in a U.S. screening population
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Acad Radiol 17:784-90. 2010
    ..The aim of this study was to investigate the clinical importance and height definition of flat (nonpolypoid) colorectal lesions detected on screening computed tomographic colonography (CTC)...
  75. ncbi Colorectal cancer screening with CT colonography: key concepts regarding polyp prevalence, size, histology, morphology, and natural history
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3 311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792 3252, USA
    AJR Am J Roentgenol 193:40-6. 2009
    ..Familiarity with current concepts regarding flat (nonpolypoid) lesions and the natural history of small colorectal polyps is also vital to the effective application of this technique...
  76. ncbi Imaging of primary malignant tumors of peritoneal and retroperitoneal origin
    J Louis Hinshaw
    Department of Radiology, University of Wisconsin Medical School, Madison, WI, 53792, USA
    Cancer Treat Res 143:281-97. 2008
    ....
  77. ncbi Linear polyp measurement at CT colonography: in vitro and in vivo comparison of two-dimensional and three-dimensional displays
    Perry 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
    ....
  78. ncbi Radiologic assessment of acute and chronic pancreatitis
    David H Kim
    Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Surg Clin North Am 87:1341-58, viii. 2007
    ..CT remains a major focal point in issues related to acute pancreatitis, whereas MRI (and magnetic resonance cholangiopancreatography) plays a larger role in chronic pancreatitis...
  79. ncbi Translucency rendering in 3D endoluminal CT colonography: a useful tool for increasing polyp specificity and decreasing interpretation time
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, Clinical Science Center, 600 Highland Ave, E3/311, Madison, WI 53792-3252, USA
    AJR Am J Roentgenol 183:429-36. 2004
  80. ncbi Electronic cleansing and stool tagging in CT colonography: advantages and pitfalls with primary three-dimensional evaluation
    Perry J Pickhardt
    Department of Radiology, National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889-5600, USA
    AJR Am J Roentgenol 181:799-805. 2003
  81. ncbi Incidence of colonic perforation at CT colonography: review of existing data and implications for screening of asymptomatic adults
    Perry 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
  82. ncbi Adenomatous polyp obscured by small-caliber rectal catheter at low-dose CT colonography: a rare diagnostic pitfall
    Perry 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 184:1581-3. 2005
  83. ncbi Virtual colonoscopy: issues related to primary screening
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, E3 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
    Eur Radiol 15:D133-7. 2005
    ....
  84. ncbi 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...
  85. ncbi The natural history of colorectal polyps and masses: rediscovered truths from the barium enema era
    Perry 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 188:619-21. 2007
  86. ncbi Intestinal malrotation in adolescents and adults: spectrum of clinical and imaging features
    Perry J Pickhardt
    Department of Radiology, National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889-5600, USA
    AJR Am J Roentgenol 179:1429-35. 2002
  87. ncbi Computerized tomography colonography: a primer for gastroenterologists
    Perry J Pickhardt
    Department of Radiology, University of Wisconsin Medical School, Madison, Wisconsin 53792-3252, USA
    Clin Gastroenterol Hepatol 6:497-502. 2008
  88. ncbi CT colonography with computer-aided detection as a second reader: observer performance study
    Nicholas Petrick
    National Institute of Biomedical Imaging and Bioengineering Center for Devices and Radiological Health Joint Laboratory for the Assessment of Medical Imaging Systems, U S Food and Drug Administration, Rockville, MD, USA
    Radiology 246:148-56. 2008
    ....
  89. ncbi By-patient performance characteristics of CT colonography: importance of polyp size threshold data
    Perry J Pickhardt
    Radiology 229:291-3; author reply 293; discussion 293. 2003
  90. ncbi Teniae coli-based circumferential localization system for CT colonography: feasibility study
    Adam Huang
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bethesda, MD 20892 1182, USA
    Radiology 243:551-60. 2007
    ..The teniae coli are extractable landmarks, and the teniae coli-based circumferential localization system helps guide virtual navigation and polyp registration at CT colonography...
  91. ncbi Computed tomographic virtual colonoscopy computer-aided polyp detection in a screening population
    Ronald 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...
  92. ncbi Computed tomographic colonography to screen for colorectal cancer, extracolonic cancer, and aortic aneurysm: model simulation with cost-effectiveness analysis
    Cesare 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...
  93. ncbi Polyps: linear and volumetric measurement at CT colonography
    Srinath C Yeshwant
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bldg 10, Room 1C351, 10 Center Dr, MSC 1182, Bethesda, MD 20892-1182, USA
    Radiology 241:802-11. 2006
    ..Linear diameter calculated from automated volume measurements showed the smallest variation between supine and prone scans while avoiding observer variability and may be best for assessing polyp size changes with serial examinations...
  94. ncbi Screening for nonpolypoid colorectal neoplasms
    Perry J Pickhardt
    JAMA 299:2743; author reply 2743-4. 2008
  95. ncbi Performance of a previously validated CT colonography computer-aided detection system in a new patient population
    Ronald M Summers
    Diagnostic Radiology Department, National Institutes of Health Clinical Center, Bldg 10, Rm 1C368X MSC 1182, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 191:168-74. 2008
    ....
  96. ncbi Utilization of the double-contrast barium enema in the early era of screening CT colonography
    Perry J Pickhardt
    AJR Am J Roentgenol 187:W661. 2006
  97. ncbi Revised colorectal screening guidelines: joint effort of the American Cancer Society, U.S. Multisociety Task Force on Colorectal Cancer, and American College of Radiology
    Elizabeth G McFarland
    Radiology 248:717-20. 2008
  98. ncbi The cost-effectiveness of CT colonography in screening for colorectal neoplasia
    Sandeep Vijan
    Veterans Affairs Health Services Research and Development Center for Practice Management and Outcomes Research, Ann Arbor, Michigan 48105, USA
    Am J Gastroenterol 102:380-90. 2007
    ..We examined the cost-effectiveness of 2- and 3-dimensional computerized tomography (CT) colonography as a screening test for colorectal neoplasia...
  99. ncbi Case report. CT, MR cholangiopancreatography, and endoscopy findings in Bouveret's syndrome
    Perry J Pickhardt
    Department of Radiology, , Uniformed Services University of the Health Sciences, Bethesda, MD, USA
    AJR Am J Roentgenol 180:1033-5. 2003
  100. ncbi Quality assessment for CT colonography: validation of automated measurement of colonic distention and residual fluid
    Keshav K Deshpande
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bldg 10, Room 1C368X, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 189:1457-63. 2007
    ....
  101. ncbi Fitz-Hugh-Curtis syndrome: multidetector CT findings of transient hepatic attenuation difference and gallbladder wall thickening
    Perry J Pickhardt
    Department of Radiology, National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD 20889-5600, USA
    AJR Am J Roentgenol 180:1605-6. 2003