J G Fletcher

Summary

Affiliation: Mayo Clinic
Country: USA

Publications

  1. doi request reprint Comparative study of two image space noise reduction methods for computed tomography: bilateral filter and nonlocal means
    Juan C Ramirez Giraldo
    CT Clinical Innovation Center, Dept of Radiology, Mayo Clinic, Rochester, MN, USA
    Conf Proc IEEE Eng Med Biol Soc 2009:3529-32. 2009
  2. doi request reprint Pilot study of detection, radiologist confidence and image quality with sinogram-affirmed iterative reconstruction at half-routine dose level
    Joel G Fletcher
    Departments of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    J Comput Assist Tomogr 37:203-11. 2013
  3. doi request reprint Perspective on radiation risk in CT imaging
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Abdom Imaging 38:22-31. 2013
  4. ncbi request reprint Validation of dual-source single-tube reconstruction as a method to obtain half-dose images to evaluate radiation dose and noise reduction: phantom and human assessment using CT colonography and sinogram-affirmed iterative reconstruction (SAFIRE)
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, Rochester, MN, USA
    J Comput Assist Tomogr 36:560-9. 2012
  5. doi request reprint CT enterography technique: theme and variations
    J G Fletcher
    Abdominal Imaging Feature Section, Radiology, Mayo Clinic, Rochester, MN 55905, USA
    Abdom Imaging 34:283-8. 2009
  6. ncbi request reprint CT colonography: unraveling the twists and turns
    J G Fletcher
    Department of Radiology, Mayo Clinic, Rochester, New York 55905, USA
    Curr Opin Gastroenterol 21:90-8. 2005
  7. ncbi request reprint Optimization of CT colonography technique: prospective trial in 180 patients
    J G Fletcher
    Department of Diagnostic Radiology, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
    Radiology 216:704-11. 2000
  8. ncbi request reprint Automated polyp measurement with CT colonography: preliminary observations in a phantom colon model
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, 200 First St SW, Mayo E 2, Rochester, MN 55905, USA
    AJR Am J Roentgenol 188:945-52. 2007
  9. doi request reprint Dual-energy and dual-source CT: is there a role in the abdomen and pelvis?
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Radiol Clin North Am 47:41-57. 2009
  10. doi request reprint Computerized tomography enterography and its role in small-bowel imaging
    Joel G Fletcher
    Department of Radiology, Mayo Clinic Rochester, Rochester, Minnesota 55905, USA
    Clin Gastroenterol Hepatol 6:283-9. 2008

Detail Information

Publications98

  1. doi request reprint Comparative study of two image space noise reduction methods for computed tomography: bilateral filter and nonlocal means
    Juan C Ramirez Giraldo
    CT Clinical Innovation Center, Dept of Radiology, Mayo Clinic, Rochester, MN, USA
    Conf Proc IEEE Eng Med Biol Soc 2009:3529-32. 2009
    ..Care must be taken when choosing the NLM parameters in order to minimize the generation of artifacts that could possibly compromise diagnostic value...
  2. doi request reprint Pilot study of detection, radiologist confidence and image quality with sinogram-affirmed iterative reconstruction at half-routine dose level
    Joel G Fletcher
    Departments of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    J Comput Assist Tomogr 37:203-11. 2013
    ....
  3. doi request reprint Perspective on radiation risk in CT imaging
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Abdom Imaging 38:22-31. 2013
    ..Radiologists can assist clinicians and patients with understanding many of these factors, including test performance, potential patient benefit, and estimates of potential risk...
  4. ncbi request reprint Validation of dual-source single-tube reconstruction as a method to obtain half-dose images to evaluate radiation dose and noise reduction: phantom and human assessment using CT colonography and sinogram-affirmed iterative reconstruction (SAFIRE)
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, Rochester, MN, USA
    J Comput Assist Tomogr 36:560-9. 2012
    ..To evaluate a method for obtaining half-dose CT images for observer studies evaluating lower-dose CT...
  5. doi request reprint CT enterography technique: theme and variations
    J G Fletcher
    Abdominal Imaging Feature Section, Radiology, Mayo Clinic, Rochester, MN 55905, USA
    Abdom Imaging 34:283-8. 2009
    ....
  6. ncbi request reprint CT colonography: unraveling the twists and turns
    J G Fletcher
    Department of Radiology, Mayo Clinic, Rochester, New York 55905, USA
    Curr Opin Gastroenterol 21:90-8. 2005
    ..This paper reviews differences in indications, populations, technique, and radiologist visualization, to elucidate the key factors that may give rise to disparate results...
  7. ncbi request reprint Optimization of CT colonography technique: prospective trial in 180 patients
    J G Fletcher
    Department of Diagnostic Radiology, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
    Radiology 216:704-11. 2000
    ..To assess the added benefits of prone positioning in addition to supine positioning and oral iodinated contrast medium for help in the detection of colonic polyps at computed tomographic (CT) colonography...
  8. ncbi request reprint Automated polyp measurement with CT colonography: preliminary observations in a phantom colon model
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, 200 First St SW, Mayo E 2, Rochester, MN 55905, USA
    AJR Am J Roentgenol 188:945-52. 2007
    ..The purpose of this study was to evaluate the accuracy and precision of polyp measurements obtained with an automated tool in a colon phantom containing polyps of multiple sizes, morphologic types, and locations...
  9. doi request reprint Dual-energy and dual-source CT: is there a role in the abdomen and pelvis?
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Radiol Clin North Am 47:41-57. 2009
    ..This article summarizes and reviews current and potential applications for dual-energy and dual-source CT in the abdomen and pelvis...
  10. doi request reprint Computerized tomography enterography and its role in small-bowel imaging
    Joel G Fletcher
    Department of Radiology, Mayo Clinic Rochester, Rochester, Minnesota 55905, USA
    Clin Gastroenterol Hepatol 6:283-9. 2008
    ..The purpose of this article is to summarize how the examination is performed, and to specify appropriate indications and alternatives, performance characteristics, and anticipated future developments...
  11. ncbi request reprint Pancreatic malignancy: value of arterial, pancreatic, and hepatic phase imaging with multi-detector row CT
    Joel G Fletcher
    Department of Radiology, Mayo Clinic Rochester, 200 First Street SW, Mayo E 2 B, Rochester, MN 55905, USA
    Radiology 229:81-90. 2003
    ..To assess the value of arterial, pancreatic, and hepatic phase imaging at multi-detector row computed tomography (CT) of the pancreas for pancreatic malignancy...
  12. ncbi request reprint Feasibility of planar virtual pathology: a new paradigm in volume-rendered CT colonography
    J G Fletcher
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    J Comput Assist Tomogr 25:864-9. 2001
    ..PVP displayed 13 of 17 (76%) polyps of >1 cm, whereas 11 of 17 (65%) were detected using traditional rendering methods. PVP may be a useful adjunct in detecting additional polyps at CT colonography...
  13. doi request reprint New concepts in intestinal imaging for inflammatory bowel diseases
    Joel G Fletcher
    Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
    Gastroenterology 140:1795-806. 2011
    ....
  14. ncbi request reprint Characterization of lesions missed on interpretation of CT colonography using a 2D search method
    Thomas 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...
  15. ncbi request reprint CT colonography without cathartic preparation: feasibility study
    M R Callstrom
    Department of Diagnostic Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Radiology 219:693-8. 2001
    ..Sensitivity for polyp detection in patients with adequate stool labeling approaches the sensitivity for polyp detection in prepared colons...
  16. ncbi request reprint Polyp measurement with CT colonography: multiple-reader, multiple-workstation comparison
    Brett M Young
    Mayo Clinic College of Medicine, Rochester, MN 55905, USA
    AJR Am J Roentgenol 188:122-9. 2007
    ..Our purpose was to define the most accurate methods for measuring polyp size at CT colonography (CTC) using three models of workstations and multiple observers...
  17. ncbi request reprint Comparative performance of two polyp detection systems on CT colonography
    J G Fletcher
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 189:277-82. 2007
    ..The purpose of our study was to evaluate two current automatic polyp detection systems to determine their sensitivity and false-positive rate in patients who have undergone CT colonography and subsequent endoscopy...
  18. doi request reprint Dual-energy CT iodine overlay technique for characterization of renal masses as cyst or solid: a phantom feasibility study
    C L Brown
    Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA
    Eur Radiol 19:1289-95. 2009
    ..Refinement of the technique remains necessary to improve specificity. If validated in patients, this may obviate the need for unenhanced acquisitions for renal mass characterization...
  19. doi request reprint Autoimmune pancreatitis: differentiation from pancreatic carcinoma and normal pancreas on the basis of enhancement characteristics at dual-phase CT
    Naoki Takahashi
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 193:479-84. 2009
    ..The purposes of this study were to define the pancreatic enhancement of autoimmune pancreatitis at dual-phase CT and to compare it with that of pancreatic carcinoma and a normal pancreas...
  20. doi request reprint Dual-phase CT of autoimmune pancreatitis: a multireader study
    Naoki Takahashi
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 190:280-6. 2008
    ..The purpose of this study was to identify findings that aid in differentiating autoimmune pancreatitis from pancreatic carcinoma using dual-phase CT...
  21. ncbi request reprint Comparison of positron emission tomography, computed tomography, and endoscopic ultrasound in the initial staging of patients with esophageal cancer
    Val J Lowe
    Department of Radiology, Mayo Clinic Rochester, 200 First Street SW, Rochester, MN 55905, USA
    Mol Imaging Biol 7:422-30. 2005
    ..Improvement in esophageal cancer staging is needed. Positron emission tomography (PET), computed tomography (CT), and endoscopic ultrasound (EUS) in the staging of esophageal carcinoma were compared...
  22. doi request reprint CT enterography: principles, technique and utility in Crohn's disease
    James E Huprich
    Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Eur J Radiol 69:393-7. 2009
    ..This article discusses the essential principles of the exam and its use in the evaluation of Crohn's disease of the small bowel...
  23. ncbi request reprint Computer-aided detection (CAD) using 360 degree virtual dissection: can CAD in a first reviewer paradigm be a reliable substitute for primary 2D or 3D search?
    Kristina T Johnson
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    AJR Am J Roentgenol 189:W172-6. 2007
    ..The purpose of this study was to evaluate the feasibility of a new computer-aided detection (CAD) software program as a first reviewer for detecting colorectal polyps when applied to 360 degrees virtual dissection image display...
  24. pmc Semi-automated vectorial analysis of anorectal motion by magnetic resonance defecography in healthy subjects and fecal incontinence
    J Noelting
    Division of Gastroenterology and Hepatology, College of Medicine, Mayo Clinic, Rochester, MN, USA
    Neurogastroenterol Motil 24:e467-75. 2012
    ..Inter-observer variability limits the reproducibility of pelvic floor motion measured by magnetic resonance imaging (MRI). Our aim was to develop a semi-automated program measuring pelvic floor motion in a reproducible and refined manner...
  25. pmc Obstetric trauma, pelvic floor injury and fecal incontinence: a population-based case-control study
    Adil E Bharucha
    Division of Gastroenterology and Hepatology, College of Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
    Am J Gastroenterol 107:902-11. 2012
    ..Hence, the objectives of this study were to evaluate the relationship between prior obstetric events, pelvic floor injury, and FI among community women...
  26. ncbi request reprint Intraductal papillary mucinous neoplasms of the pancreas: CT patterns of recurrence and multiobserver performance in detecting recurrent neoplasm after surgical resection
    Jared A Christensen
    Mayo Medical School, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 183:1367-74. 2004
    ..The purposes of our study were to describe the CT appearance of recurrent intraductal papillary mucinous neoplasms of the pancreas after surgical resection and estimate the performance of CT in detecting recurrent neoplasms...
  27. pmc Quantitative measurement and visual assessment of ileal Crohn's disease activity by computed tomography enterography: correlation with endoscopic severity and C reactive protein
    J F Colombel
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Gut 55:1561-7. 2006
    ..Few studies have correlated computed tomography (CT) enterography findings with endoscopic severity and C reactive protein (CRP) concentrations...
  28. ncbi request reprint A comparison of endoscopic ultrasound, magnetic resonance imaging, and exam under anesthesia for evaluation of Crohn's perianal fistulas
    D A Schwartz
    The Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota 55905, USA
    Gastroenterology 121:1064-72. 2001
    ..Accuracy was 100% when any 2 tests were combined. CONCLUSIONS: EUS, MRI, and EUA are accurate tests for determining fistula anatomy in patients with perianal Crohn's disease. The optimal approach may be combining any 2 of the 3 methods...
  29. pmc Relationship between symptoms and disordered continence mechanisms in women with idiopathic faecal incontinence
    A E Bharucha
    Clinical Enteric Neuroscience Translational and Epidemiological Research Program CENTER, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Gut 54:546-55. 2005
    ..Anal sphincter weakness and rectal sensory disturbances contribute to faecal incontinence (FI). Our aims were to investigate the relationship between symptoms, risk factors, and disordered anorectal and pelvic floor functions in FI...
  30. ncbi request reprint Magnetic resonance imaging of anatomic and dynamic defects of the pelvic floor in defecatory disorders
    J G Fletcher
    Department of Radiology, Mayo Clinic and Mayo Medical School, Rochester, Minnesota 55905, USA
    Am J Gastroenterol 98:399-411. 2003
    ..These complementary techniques can evaluate obstructed defecation and fecal incontinence. Our aim was to develop a single, nonionizing, minimally invasive modality to image global pelvic floor anatomy and motion...
  31. doi request reprint Head-to-head comparison of oral contrast agents for cross-sectional enterography: small bowel distention, timing, and side effects
    Brett M Young
    Mayo Clinic College of Medicine, Mayo Clinic Rochester, Rochester, MN, USA
    J Comput Assist Tomogr 32:32-8. 2008
    ..To determine small bowel distention, scanning time, and side effects of commercially available oral contrast agents used in cross-sectional enterography...
  32. doi request reprint Obscure gastrointestinal bleeding: evaluation with 64-section multiphase CT enterography--initial experience
    James E Huprich
    Department of Radiology, Mayo Clinic, 200 First Ave SW, Rochester, MN 55905, USA
    Radiology 246:562-71. 2008
    ..CT enterography helped correctly identify three lesions undetected at capsule endoscopy. Study results suggest that multiphase, multiplanar CT enterography may have a role in the evaluation of OGIB...
  33. doi request reprint Noncathartic CT colonography with stool tagging: performance with and without electronic stool subtraction
    C Daniel Johnson
    Department of Radiology, Mayo Clinic, 13400 E Shea Blve, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 190:361-6. 2008
    ....
  34. pmc Noninvasive differentiation of uric acid versus non-uric acid kidney stones using dual-energy CT
    Andrew N Primak
    CT Clinical Innovation Center, Department of Radiology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
    Acad Radiol 14:1441-7. 2007
    ..To determine the accuracy and sensitivity for dual-energy computed tomography (DECT) discrimination of uric acid (UA) stones from other (non-UA) renal stones in a commercially implemented product...
  35. ncbi request reprint Prevalence and significance of incidental extracardiac findings at 64-multidetector coronary CTA
    Jacobo Kirsch
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    J Thorac Imaging 22:330-4. 2007
    ..Computed tomography (CT) angiography of the coronaries has the ability to depict extracardiac lesions in the visualized thorax and upper abdomen. These incidental lesions can often present a challenge to physicians...
  36. doi request reprint Small-bowel imaging in Crohn's disease: a prospective, blinded, 4-way comparison trial
    Craig A Solem
    Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
    Gastrointest Endosc 68:255-66. 2008
    ..With the introduction of new techniques to image the small bowel, there remains uncertainty about their role for diagnosing Crohn's disease...
  37. pmc Understanding the relationship between image quality and motion velocity in gated computed tomography: preliminary work for 4-dimensional musculoskeletal imaging
    Shian Chao Tay
    Orthopedics Biomechanics Laboratory, CT Innovation Center, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
    J Comput Assist Tomogr 32:634-9. 2008
    ..To study the effect of motion velocity on image quality to determine the requirements for 4-dimensional (4D; ie, 3D + time) musculoskeletal computed tomographic (CT) imaging...
  38. doi request reprint Detection of occult colonic perforation before CT colonography after incomplete colonoscopy: perforation rate and use of a low-dose diagnostic scan before CO2 insufflation
    David M Hough
    Department of Radiology, Mayo Clinic, 200 First St SW, Charlton 2, Rochester, MN 55905, USA
    AJR Am J Roentgenol 191:1077-81. 2008
    ..The purpose of this study was to obtain a low-dose CT scan before CT colonography to estimate the prevalence of occult colonic perforation among patients referred for same-day or next-day CT colonography after incomplete colonoscopy...
  39. pmc Dual-source dual-energy CT with additional tin filtration: Dose and image quality evaluation in phantoms and in vivo
    Andrew N Primak
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    AJR Am J Roentgenol 195:1164-74. 2010
    ..The objective of this study was to investigate the effect on radiation dose and image quality of the use of additional spectral filtration for dual-energy CT using dual-source CT (DSCT)...
  40. pmc Incidental findings in imaging research: evaluating incidence, benefit, and burden
    Nicholas M Orme
    Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA
    Arch Intern Med 170:1525-32. 2010
    ..Little information exists concerning the frequency and medical significance of incidental findings (IFs) in imaging research...
  41. pmc Peripancreatic collections in acute pancreatitis: correlation between computerized tomography and operative findings
    Santhi Swaroop Vege
    Miles and Shirley Fiterman Center for Digestive Diseases, 200 First Street SW, Rochester, MN 55905, USA
    World J Gastroenterol 16:4291-6. 2010
    ..To evaluate the ability of contrast-enhanced computerized tomography (CECT) to characterize the nature of peripancreatic collections...
  42. doi request reprint Genitourinary applications of dual-energy CT
    Terri J Vrtiska
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    AJR Am J Roentgenol 194:1434-42. 2010
    ..In addition, improved material characterization and creation of virtual unenhanced techniques potentially result in decreased radiation dose. We will review the role of dual-energy CT as applied to the genitourinary system...
  43. ncbi request reprint Projection space denoising with bilateral filtering and CT noise modeling for dose reduction in CT
    Armando Manduca
    Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
    Med Phys 36:4911-9. 2009
    ..To investigate a novel locally adaptive projection space denoising algorithm for low-dose CT data...
  44. doi request reprint Metal artifact reduction from reformatted projections for hip prostheses in multislice helical computed tomography: techniques and initial clinical results
    Lifeng Yu
    Department of Radiology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
    Invest Radiol 44:691-6. 2009
    ..The purpose of this work was to develop a projection-based method for reducing metal artifacts caused by hip prostheses in multislice helical CT...
  45. pmc In defense of body CT
    Cynthia H McCollough
    Department of Radiology, Mayo Clinic, 200 First St SW, East 2 Mayo Bldg, Rochester, MN 55905, USA
    AJR Am J Roentgenol 193:28-39. 2009
    ..In addition, we review available dose management and optimization techniques...
  46. doi request reprint Autoimmune pancreatitis: pancreatic and extrapancreatic imaging findings
    Kale D Bodily
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    AJR Am J Roentgenol 192:431-7. 2009
    ..It is important for radiologists to understand both the pancreatic and extrapancreatic imaging findings of autoimmune pancreatitis to make accurate and timely diagnoses...
  47. ncbi request reprint Automatic selection of tube potential for radiation dose reduction in CT: a general strategy
    Lifeng Yu
    Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA
    Med Phys 37:234-43. 2010
    ..The purpose of this work was to develop a general strategy that allows for automatic tube potential selection for each individual patient and each diagnostic task...
  48. pmc Evaluation of non-linear blending in dual-energy computed tomography
    David R Holmes
    Biomedical Imaging Resource, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, United States
    Eur J Radiol 68:409-13. 2008
    ..Further study on selection of blending parameters and lesion conspicuity in non-linear blended images is being pursued...
  49. ncbi request reprint Metal artifact suppression from reformatted projections in multislice helical CT using dual-front active contours
    Hua Li
    Department of Radiology, Mayo Clinic College of Medicine Rochester, 200 First Avenue, SW, Rochester, Minnesota 55905, USA
    Med Phys 37:5155-64. 2010
    ....
  50. ncbi request reprint State-of-the-art imaging with 64-channel multidetector CT angiography
    Terri J Vrtiska
    Department of Radiology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
    Perspect Vasc Surg Endovasc Ther 17:3-8. 2005
    ..Future applications of 64-channel technology for preoperative and postoperative vascular surgery and endovascular techniques are also described...
  51. ncbi request reprint Renal involvement in patients with autoimmune pancreatitis: CT and MR imaging findings
    Naoki Takahashi
    Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Radiology 242:791-801. 2007
    ..To retrospectively evaluate computed tomographic (CT) and magnetic resonance (MR) imaging renal findings at clinical presentation, during treatment, and at follow-up in patients with autoimmune pancreatitis (AIP)...
  52. ncbi request reprint Relationship between noise, dose, and pitch in cardiac multi-detector row CT
    Andrew N Primak
    CT Clinical Innovation Center, Department of Radiology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
    Radiographics 26:1785-94. 2006
    ..For a particular application, the higher dose resulting from faster rotation speeds should be justified by the clinical benefits of the improved temporal resolution...
  53. ncbi request reprint Spectrum of normal and abnormal CT appearances of the ileocecal valve and cecum with endoscopic and surgical correlation
    Alvin C Silva
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 27:1039-54. 2007
    ..Familiarity with the typical appearances of the normal anatomy and various pathologic conditions of the gastrointestinal tract on two- and three-dimensional cross-sectional images is useful in making the correct diagnosis...
  54. ncbi request reprint CT enterography as a diagnostic tool in evaluating small bowel disorders: review of clinical experience with over 700 cases
    Scott R Paulsen
    Department of Diagnostic Radiology and the College of Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Radiographics 26:641-57; discussion 657-62. 2006
    ..CT enterography has also become an important alternative to traditional fluoroscopy in the assessment of other small bowel disorders such as celiac sprue and small bowel neoplasms...
  55. ncbi request reprint Phenotypic variation in functional disorders of defecation
    Adil E Bharucha
    Division of Gastroenterology and Hepatology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
    Gastroenterology 128:1199-210. 2005
    ..Our aim was to characterize phenotypic variability in constipated patients by anorectal assessments...
  56. ncbi request reprint Understanding interpretive errors in radiologists learning computed tomography colonography
    Jeff L Fidler
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Acad Radiol 11:750-6. 2004
    ..To determine if interpretive errors in the course of learning CT colonography are secondary to failures in detection or in characterization and determine the types of lesions frequently missed...
  57. ncbi request reprint Nonradiologists as second readers for intraluminal findings at CT colonography
    Kale D Bodily
    Mayo Clinic School of Medicine, Mayo Clinic Rochester, 200 First Street SW, Rochester, MN 55905, USA
    Acad Radiol 12:67-73. 2005
    ..We sought to determine if nonradiologists could learn to interpret intraluminal findings at CTC with a high degree of sensitivity to determine if they could play a role as second readers in interpreting CTC exams...
  58. ncbi request reprint Evaluation of benign and malignant rectal lesions with CT colonography and endoscopic correlation
    Alvin C Silva
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 26:1085-99. 2006
    ..Familiarity with the spectrum of rectal diseases and with the potential pitfalls and technical limitations of CT colonography will help minimize interpretative and perceptual errors...
  59. ncbi request reprint Contrast-enhanced CT colonography in recurrent colorectal carcinoma: feasibility of simultaneous evaluation for metastatic disease, local recurrence, and metachronous neoplasia in colorectal carcinoma
    J 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
    ....
  60. ncbi request reprint Future directions in CT colonography
    J G Fletcher
    Department of Radiology, Mayo Clinic and Mayo Foundation, 200 First Street SW, Rochester, MN 55905, USA
    Abdom Imaging 27:301-8. 2002
  61. ncbi request reprint CT colonography (virtual colonoscopy) for the detection of colorectal polyps and neoplasms. current status and future developments
    T M Gluecker
    Department of Radiology, Mayo Clinic Rochester, 200 First Street S W Rochester, MN 55905, USA
    Eur J Cancer 38:2070-8. 2002
    ..Continuing technical innovations such as multidetector CT, computer-aided diagnosis, new image display techniques and faecal tagging promise to improve the performance and patient acceptance of CT colonography in the future...
  62. doi request reprint Detectability of urinary stones on virtual nonenhanced images generated at pyelographic-phase dual-energy CT
    Naoki Takahashi
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    Radiology 256:184-90. 2010
    ..To evaluate the detectability of urinary stones on virtual nonenhanced images generated at pyelographic-phase dual-energy computed tomography (CT)...
  63. ncbi request reprint CT of small-bowel ischemia associated with obstruction in emergency department patients: diagnostic performance evaluation
    Shannon P Sheedy
    Division of Abdominal Imaging, Department of Radiology, Mayo Clinic College of Medicine, Mayo W2, 200 First St SW, Rochester, MN 55905, USA
    Radiology 241:729-36. 2006
    ....
  64. pmc Can radiologist training and testing ensure high performance in CT colonography? Lessons From the National CT Colonography Trial
    Joel G Fletcher
    Mayo Clinic, Rochester, MN 55905, USA
    AJR Am J Roentgenol 195:117-25. 2010
    ....
  65. ncbi request reprint Calcifying obstructive pancreatitis: a study of intraductal papillary mucinous neoplasm associated with pancreatic calcification
    Mauricio Zapiach
    Division of Gastroenterology and Hepatology, Mayo Clinic Rochester, Rochester, Minnesota 55905, USA
    Clin Gastroenterol Hepatol 2:57-63. 2004
    ..The aim of this study is to describe the profile of IPMN associated with calcification and gain insights into the pathogenesis of calcification in IPMN...
  66. ncbi request reprint Occult colorectal polyps on CT colonography: implications for surveillance
    Robert 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...
  67. ncbi request reprint Four-dimensional computed tomographic imaging in the wrist: proof of feasibility in a cadaveric model
    Shian Chao Tay
    Orthopedics Biomechanics Laboratory, Mayo Clinic College of Medicine, Rochester, MN, USA
    Skeletal Radiol 36:1163-9. 2007
    ..The purpose of this work was to assess the feasibility of using retrospectively gated spiral computed tomography (CT) to perform four-dimensional (4D) imaging of the moving wrist joint...
  68. ncbi request reprint Large-vessel distensibility measurement with electrocardiographically gated multidetector CT: phantom study and initial experience
    Jie Zhang
    Department of Radiology, Mayo Clinic College of Medicine, 200 First St SW, Rochester, MN 55905, USA
    Radiology 245:258-66. 2007
    ....
  69. ncbi request reprint Active Crohn disease: CT findings and interobserver agreement for enteric phase CT enterography
    Fargol Booya
    Department of Radiology, Mayo Clinic College of Medicine, 200 First St SW, Rochester, MN 55905, USA
    Radiology 241:787-95. 2006
    ..Mural attenuation for different bowel loops was compared by using a Student t test, with kappa statistics used to measure interobserver agreement and Pearson correleation coefficients used to compare visual and quantitative measures...
  70. ncbi request reprint Carcinoid tumors of the stomach: a clinical and radiographic study
    A J Binstock
    Department of Radiology, Mayo Clinic, 200 First St. S.W, Mayo E2-B, Rochester, MN 55905, USA
    AJR Am J Roentgenol 176:947-51. 2001
    ..Third, the radiologic appearance and management of these tumors depend on the clinical background of the patient...
  71. pmc Dysfunctional urinary voiding in women with functional defecatory disorders
    C J Klingele
    Departments of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN 55905, USA
    Neurogastroenterol Motil 22:1094-e284. 2010
    ..Our hypothesis was that patients with defecatory disorders have generalized pelvic floor dysfunction, manifesting as dysfunctional urinary voiding...
  72. ncbi request reprint Diseases of the cecum: a CT pictorial review
    Thomas M Gluecker
    Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
    Eur Radiol 13:L51-61. 2003
    ....
  73. ncbi request reprint Assessment of small bowel Crohn disease: noninvasive peroral CT enterography compared with other imaging methods and endoscopy--feasibility study
    Peter B Wold
    Department of Diagnostic Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
    Radiology 229:275-81. 2003
    ..The authors conclude that noninvasive peroral portal venous phase CT enterography with use of water is an accurate and feasible technique for detecting active small bowel inflammation in patients with Crohn disease...
  74. ncbi request reprint Computerized tomographic colonography: performance evaluation in a retrospective multicenter setting
    C 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...
  75. ncbi request reprint CT colonography using 360-degree virtual dissection: a feasibility study
    Kristina T Johnson
    Department of Radiology, Mayo Clinic Rochester, 200 First Street SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 186:90-5. 2006
    ....
  76. ncbi request reprint Neural ganglia visualized by endoscopic ultrasound
    Michael Levy
    Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota 55906, USA
    Am J Gastroenterol 101:1787-91. 2006
    ..To describe visualization of gastrointestinal neural ganglia by endoscopic ultrasound (EUS)...
  77. ncbi request reprint Crohn Disease: mural attenuation and thickness at contrast-enhanced CT Enterography--correlation with endoscopic and histologic findings of inflammation
    Kale D Bodily
    Mayo Clinic College of Medicine, Rochester, Minn 55905, USA
    Radiology 238:505-16. 2006
    ....
  78. doi request reprint Abdominal findings in hereditary hemorrhagic telangiectasia: pictorial essay on 2D and 3D findings with isotropic multiphase CT
    Hassan Siddiki
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Radiographics 28:171-84. 2008
    ..Coronal maximum intensity projection images are particularly helpful in depiction of small hepatic vascular lesions...
  79. ncbi request reprint Recent advances in assessing anorectal structure and functions
    Adil E Bharucha
    Clinical Enteric Neuroscience Translational and Epidemiological Research Program, Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
    Gastroenterology 133:1069-74. 2007
  80. ncbi request reprint Preoperative detection of pancreatic insulinomas on multiphasic helical CT
    J L Fidler
    Department of Radiology, Mayo Clinic and Mayo Foundation, 200 First St S W, Rochester, MN 55905, USA
    AJR Am J Roentgenol 181:775-80. 2003
    ..The objective was to analyze enhancement characteristics of insulinomas and to determine the ability of multiphase CT to localize these tumors...
  81. doi request reprint A prospective evaluation of computerized tomographic (CT) scanning as a screening modality for esophageal varices
    Roman E Perri
    Advanced Liver Diseases Study Group, Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic, Rochester, MN 55905, USA
    Hepatology 47:1587-94. 2008
    ..CONCLUSION: Abdominal CT as the initial screening test for varices could be cost-effective. CT also permits evaluation of extra-luminal pathology that impacts management...
  82. ncbi request reprint Colonic perforation at CT colonography in a patient without known colonic disease
    Brett M Young
    Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 186:119-21. 2006
  83. ncbi request reprint Effect of slice thickness and primary 2D versus 3D virtual dissection on colorectal lesion detection at CT colonography in 452 asymptomatic adults
    C Daniel Johnson
    Department of Radiology, Mayo Clinic, 200 First St, SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 189:672-80. 2007
    ..The objective of our study was to compare the performance of primary 3D search using 360 degree virtual dissection with primary 2D search using a 2.5- versus a 1.25-mm slice thickness...
  84. pmc Analysis of heart rate and heart rate variation during cardiac CT examinations
    Jie Zhang
    Department of Radiology, Mayo Clinic College of Medicine, Rochester, MN 55455, USA
    Acad Radiol 15:40-8. 2008
    ..We sought to examine heart rate and heart rate variability during cardiac computed tomography (CT)...
  85. pmc Dual-energy CT iodine-subtraction virtual unenhanced technique to detect urinary stones in an iodine-filled collecting system: a phantom study
    Naoki Takahashi
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 190:1169-73. 2008
    ..The objective of our study was to evaluate the feasibility of virtual unenhanced images reconstructed from a dual-energy CT scan to depict urinary stones in an iodine solution in a phantom study...
  86. ncbi request reprint Resectability of presymptomatic pancreatic cancer and its relationship to onset of diabetes: a retrospective review of CT scans and fasting glucose values prior to diagnosis
    Mario Pelaez-Luna
    Department of Internal Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
    Am J Gastroenterol 102:2157-63. 2007
    ..It is unclear if the cancer is resectable at the onset of diabetes. We (a) determined the resectability of pancreatic cancer on abdominal CT scans done prior to clinical diagnosis and (b) correlated resectability with onset of diabetes...
  87. doi request reprint Prospective comparison of state-of-the-art MR enterography and CT enterography in small-bowel Crohn's disease
    Hassan A Siddiki
    Department of Radiology, Mayo Clinic, 200 First St, SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 193:113-21. 2009
    ....
  88. doi request reprint Assessment of appropriateness of indications for CT enterography in younger patients
    Luis S Guimaraes
    Department of Radiology, Mayo Clinic, Rochester, Minnestota 55905, USA
    Inflamm Bowel Dis 16:226-32. 2010
    ..We sought to determine the appropriateness of CTEs based on clinical indication in patients < or =35 years old, and the potential impact of evolution of practice to alternative magnetic resonance enterography (MRE)...
  89. doi request reprint Formative evaluation of standardized training for CT colonographic image interpretation by novice readers
    Abraham H Dachman
    Department of Radiology, University of Chicago, MC 2026, 5841 S Maryland Ave, Chicago, IL 60637, USA
    Radiology 249:167-77. 2008
    ..To introduce an educational intervention-specifically, a specialized training course-and perform a formative evaluation of the effect of the intervention on novice reader interpretation of computed tomography (CT) colonographic data...
  90. doi request reprint Prevalence of penetrating disease and extraintestinal manifestations of Crohn's disease detected with CT enterography
    David H Bruining
    Miles and Shirley Fiterman Center for Digestive Diseases, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
    Inflamm Bowel Dis 14:1701-6. 2008
    ..We also sought to examine the percentage of clinically significant new noninflammatory bowel disease (IBD) related findings in these patients...
  91. pmc Diagnostic ionizing radiation exposure in a population-based cohort of patients with inflammatory bowel disease
    Joanna M Peloquin
    Department of Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
    Am J Gastroenterol 103:2015-22. 2008
    ..However, the extent of radiation exposure in these patients is unknown...
  92. ncbi request reprint Pelvic organ prolapse in defecatory disorders
    Christopher J Klingele
    Department of Obstetrics and Gynecology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA
    Obstet Gynecol 106:315-20. 2005
    ..To compare the prevalence of pelvic organ prolapse in subjects with defecatory disorders with that in control subjects...
  93. ncbi request reprint Colonography: current status, research directions and challenges. Update 2002
    Wolfgang Luboldt
    Department of Diagnostic and Interventional Radiology, Johann Wolfgang Goethe University Hospital, Theodor Stern Kai 7, 60590 Frankfurt Main, Germany
    Eur Radiol 12:502-24. 2002
    ..In this article we summarise the current status, research directions, and challenges in CT and MR colonography...
  94. ncbi request reprint 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
    ....
  95. ncbi request reprint Standards for gastroenterologists for performing and interpreting diagnostic computed tomographic colonography
    Don C Rockey
    University of Texas Southwestern Medical Center, Division of Digestive and Liver Diseases, Dallas, Texas, USA
    Gastroenterology 133:1005-24. 2007
  96. ncbi request reprint Primary hepatic angiosarcoma: findings at CT and MR imaging
    Takashi Koyama
    Department of Diagnostic Imaging and Nuclear Medicine, School of Medicine, Kyoto University, Japan
    Radiology 222:667-73. 2002
    ..To evaluate and describe cross-sectional imaging findings in patients with pathologically confirmed primary hepatic angiosarcoma...
  97. ncbi request reprint Effect of aging on anorectal and pelvic floor functions in females
    Jean C Fox
    Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
    Dis Colon Rectum 49:1726-35. 2006
    ..In females, fecal incontinence often is attributed to birth trauma; however, symptoms sometimes begin decades after delivery, suggesting that anorectal sensorimotor functions decline with aging...
  98. pmc Managing incidental findings in human subjects research: analysis and recommendations
    Susan M Wolf
    University of Minnesota, MN, USA
    J Law Med Ethics 36:219-48, 211. 2008
    ..We recommend a pathway and categorize IFs into those that must be disclosed to research participants, those that may be disclosed, and those that should not be disclosed...