A K Hara

Summary

Affiliation: Mayo Clinic
Country: USA

Publications

  1. doi request reprint Reducing body CT radiation dose: beyond just changing the numbers
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 201:33-40. 2013
  2. doi request reprint Using CT enterography to monitor Crohn's disease activity: a preliminary study
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 190:1512-6. 2008
  3. ncbi request reprint Crohn disease of the small bowel: preliminary comparison among CT enterography, capsule endoscopy, small-bowel follow-through, and ileoscopy
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiology 238:128-34. 2006
  4. doi request reprint CT enterography of Crohn's disease
    Amy K Hara
    Diagnostic Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    Abdom Imaging 34:289-95. 2009
  5. ncbi request reprint Imaging of small bowel disease: comparison of capsule endoscopy, standard endoscopy, barium examination, and CT
    Amy K Hara
    Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 25:697-711; discussion 711-8. 2005
  6. ncbi request reprint Capsule endoscopy: the end of the barium small bowel examination?
    A K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ 85259, USA
    Abdom Imaging 30:179-83. 2005
  7. ncbi request reprint Extracolonic findings at CT colonography
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    Semin Ultrasound CT MR 26:24-7. 2005
  8. doi request reprint Preliminary estimate of triphasic CT enterography performance in hemodynamically stable patients with suspected gastrointestinal bleeding
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic Scottsdale, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 193:1252-60. 2009
  9. ncbi request reprint Small bowel: preliminary comparison of capsule endoscopy with barium study and CT
    Amy K Hara
    Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiology 230:260-5. 2004
  10. pmc ACRIN CT colonography trial: does reader's preference for primary two-dimensional versus primary three-dimensional interpretation affect performance?
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiology 259:435-41. 2011

Detail Information

Publications36

  1. doi request reprint Reducing body CT radiation dose: beyond just changing the numbers
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 201:33-40. 2013
    ..Implementing this in practice, however, is difficult because of the variability between practices, CT scanners, radiologist preferences, and institutional capacity...
  2. doi request reprint Using CT enterography to monitor Crohn's disease activity: a preliminary study
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 190:1512-6. 2008
    ..The purpose of our study was to determine whether imaging changes of Crohn's disease at sequential CT enterography examinations correlate with disease progression or regression...
  3. ncbi request reprint Crohn disease of the small bowel: preliminary comparison among CT enterography, capsule endoscopy, small-bowel follow-through, and ileoscopy
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiology 238:128-34. 2006
    ..To prospectively compare four diagnostic small-bowel imaging techniques for depiction of abnormal findings in the same patients known to have or suspected of having Crohn disease...
  4. doi request reprint CT enterography of Crohn's disease
    Amy K Hara
    Diagnostic Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    Abdom Imaging 34:289-95. 2009
    ..This article summarizes the advantages/disadvantages, scanning technique, imaging findings, performance and pitfalls of CTE for the evaluation of Crohn's disease...
  5. ncbi request reprint Imaging of small bowel disease: comparison of capsule endoscopy, standard endoscopy, barium examination, and CT
    Amy K Hara
    Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 25:697-711; discussion 711-8. 2005
    ..Nevertheless, this new technique is easy to perform, is well tolerated by patients, and, for the first time, allows noninvasive endoscopic evaluation of the entire small bowel...
  6. ncbi request reprint Capsule endoscopy: the end of the barium small bowel examination?
    A K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ 85259, USA
    Abdom Imaging 30:179-83. 2005
  7. ncbi request reprint Extracolonic findings at CT colonography
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    Semin Ultrasound CT MR 26:24-7. 2005
    ..The number of HIF can vary depending on the definition of an HIF, the patient population, as well as technical factors. This article will discuss the incidence and implication of detecting extracolonic findings at CTC...
  8. doi request reprint Preliminary estimate of triphasic CT enterography performance in hemodynamically stable patients with suspected gastrointestinal bleeding
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic Scottsdale, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 193:1252-60. 2009
    ..The objective of our study was to retrospectively evaluate the performance of triphasic CT enterography and identify causes of false-negative CT results in hemodynamically stable patients with suspected gastrointestinal bleeding...
  9. ncbi request reprint Small bowel: preliminary comparison of capsule endoscopy with barium study and CT
    Amy K Hara
    Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiology 230:260-5. 2004
    ..To retrospectively compare capsule endoscopic (CE) findings with findings at barium studies or computed tomography (CT) in patients without evidence of small-bowel stricture at barium examination...
  10. pmc ACRIN CT colonography trial: does reader's preference for primary two-dimensional versus primary three-dimensional interpretation affect performance?
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiology 259:435-41. 2011
    ..To determine whether the reader's preference for a primary two-dimensional (2D) or three-dimensional (3D) computed tomographic (CT) colonographic interpretation method affects performance when using each technique...
  11. ncbi request reprint The future of colorectal imaging: computed tomographic colonography
    Amy K Hara
    Department of Radiology, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ 85259, USA
    Gastroenterol Clin North Am 31:1045-60. 2002
    ..The most important issue that remains is its performance in a screening population, and studies are currently underway to answer that important question...
  12. pmc National CT colonography trial (ACRIN 6664): comparison of three full-laxative bowel preparations in more than 2500 average-risk patients
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 196:1076-82. 2011
    ..The purpose of our study was to compare the effect of three different full-laxative bowel preparations on patient compliance, residual stool and fluid, reader confidence, and polyp detection at CT colonography (CTC)...
  13. ncbi request reprint CT colonography: single- versus multi-detector row imaging
    A K Hara
    Department of Diagnostic Radiology, Mallinckrodt Institute of Radiology, 510 S Kingshighway Blvd, St Louis, MO 63110, USA
    Radiology 219:461-5. 2001
    ..To compare respiratory artifacts, colonic distention, and polyp detection at computed tomographic (CT) colonography by using single- and multi-detector row helical CT systems...
  14. ncbi request reprint A meta-analysis of the yield of capsule endoscopy compared to other diagnostic modalities in patients with obscure gastrointestinal bleeding
    Stuart L Triester
    Division of Gastroenterology, Mayo Clinic in Scottsdale, Scottsdale, Arizona 85259, USA
    Am J Gastroenterol 100:2407-18. 2005
    ..The aim of this study was to evaluate the yield of small bowel findings with CE in patients with OGIB compared to other modalities using meta-analysis...
  15. ncbi request reprint A meta-analysis of the yield of capsule endoscopy compared to other diagnostic modalities in patients with non-stricturing small bowel Crohn's disease
    Stuart L Triester
    Division of Gastroenterology, Mayo Clinic in Scottsdale, Scottsdale, Arizona 85259, USA
    Am J Gastroenterol 101:954-64. 2006
    ..The aim of this study was to evaluate the yield of CE compared with other modalities in symptomatic patients with suspected or established CD using meta-analysis...
  16. ncbi request reprint Incidental extracolonic findings at CT colonography
    A K Hara
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    Radiology 215:353-7. 2000
    ..To determine the frequency of extracolonic findings at computed tomographic (CT) colonography and the effect of these findings on subsequent patient treatment and cost...
  17. doi request reprint Evaluation of colitis: usefulness of CT enterography technique
    K T Johnson
    Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Emerg Radiol 16:277-82. 2009
    ..The full extent of colonic disease at CTE was usually underestimated. CTE is a valid technique for detecting colitis in the colon in patients with IBD. Better methods for assessing disease activity and extent are needed...
  18. 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...
  19. ncbi request reprint MR cholangiopancreatography: improved ductal distention with intravenous morphine administration
    Alvin C Silva
    Department of Diagnostic Radiology, Mayo Clinic Scottsdale, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 24:677-87. 2004
    ..Morphine administration may also be particularly helpful for the evaluation of patients with primary sclerosing cholangitis, malignant neoplasms such as cholangiocarcinoma, or cystic and non-organ-deforming benign pancreatic neoplasms...
  20. doi request reprint MR imaging of hypervascular liver masses: a review of current techniques
    Alvin C Silva
    Department of Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    Radiographics 29:385-402. 2009
    ..A systematic approach that makes use of a simple decision algorithm can help differentiate hypervascular hepatic lesions on the basis of their distinguishing MR imaging characteristics and related clinical information...
  21. ncbi request reprint CT colonography with intravenous contrast material: varied appearances of colorectal carcinoma
    Alvin C Silva
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 25:1321-34. 2005
    ..Imaging pitfalls that can simulate or obscure neoplasms are retained fecal material or fluid, incomplete distention, and advanced diverticulosis...
  22. ncbi request reprint Three-dimensional virtual dissection at CT colonography: unraveling the colon to search for lesions
    Alvin C Silva
    Department of Diagnostic Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    Radiographics 26:1669-86. 2006
    ....
  23. 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...
  24. ncbi request reprint Detection of flat lesions in the colon with CT colonography
    J L Fidler
    Department of Radiology, Mayo Clinic and Mayo Foundation, 200 First Street SW, Rochester, MN 55905, USA
    Abdom Imaging 27:292-300. 2002
    ..We investigated whether flat lesions of the colon could be detected on computed tomographic colonography (CTC)...
  25. ncbi request reprint CT enterography: noninvasive evaluation of Crohn's disease and obscure gastrointestinal bleed
    Scott R Paulsen
    Department of Diagnostic Radiology, Mayo Clinic Rochester, 200 First St SW, Rochester, MN 55905, USA
    Radiol Clin North Am 45:303-15. 2007
    ..Early studies indicate that CTE is superior to barium examination in the evaluation of CD and is complementary to capsule endoscopy in the evaluation of OGIB...
  26. doi request reprint Incidence of highly important extravascular findings detected on CT angiography of the abdominal aorta and the lower extremities
    Sailen G Naidu
    Department of Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 194:1630-4. 2010
    ..The purpose of this study was to determine the frequency and significance of extravascular findings on CT angiography of the abdominal aorta and lower extremities...
  27. doi request reprint Reducing the radiation dose for CT colonography using adaptive statistical iterative reconstruction: A pilot study
    Kristina T Flicek
    Department of Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 195:126-31. 2010
    ..The purpose of our study was to evaluate the feasibility of preserving image quality during CT colonography (CTC) using a reduced radiation dose with adaptive statistical iterative reconstruction (ASIR)...
  28. pmc Accuracy of CT colonography for detection of large adenomas and cancers
    C Daniel Johnson
    Mayo Clinic Arizona, Scottsdale, AZ, USA
    N Engl J Med 359:1207-17. 2008
    ..Computed tomographic (CT) colonography is a noninvasive option in screening for colorectal cancer. However, its accuracy as a screening tool in asymptomatic adults has not been well defined...
  29. ncbi request reprint AJR Teaching File: chronic nausea and vomiting with abdominal pain
    Jeremy L Friese
    Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN, USA
    AJR Am J Roentgenol 186:S445-8. 2006
  30. 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
    ....
  31. doi request reprint Capsule endoscopy has a significantly higher diagnostic yield in patients with suspected and established small-bowel Crohn's disease: a meta-analysis
    Paula M Dionisio
    Division of Gastroenterology and Hepatology, Mayo Clinic Scottsdale, Scottsdale, Arizona 85259, USA
    Am J Gastroenterol 105:1240-8; quiz 1249. 2010
    ..The aim of this study was to evaluate the diagnostic yield of CE compared with other modalities in patients with suspected and established CD using a meta-analysis...
  32. doi request reprint Iterative reconstruction technique for reducing body radiation dose at CT: feasibility study
    Amy K Hara
    Department of Diagnostic Radiology, Mayo Clinic Arizona, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA
    AJR Am J Roentgenol 193:764-71. 2009
    ..The purpose of this study was to evaluate the image noise, low-contrast resolution, image quality, and spatial resolution of adaptive statistical iterative reconstruction in low-dose body CT...
  33. ncbi request reprint Colonic perforation after computed tomographic colonography in a patient with fibrostenosing Crohn's disease
    Stuart L Triester
    Division of Gastroenterology and Hepatology, Mayo Clinic in Scottsdale, Scottsdale, Arizona 85259, USA
    Am J Gastroenterol 101:189-92. 2006
    ..Physician awareness of the increased risk of perforation with CTC in the setting of inflammatory and/or obstructive disease of the colon will allow for improved clinical decision-making in the care of these patients...
  34. 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...
  35. ncbi request reprint Assessment of polyp and mass histopathology by intravenous contrast-enhanced CT colonography
    Ronald M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Room 1C351, 10 Center Dr MSC 1182, Bethesda, MD 20892 1182, USA
    Acad Radiol 13:1490-5. 2006
    ..We sought to demonstrate that intravenous contrast-enhanced CT colonography (CTC) can distinguish colonic adenomas from carcinomas...
  36. ncbi request reprint A prospective study of the utility of abdominal radiographs after capsule endoscopy for the diagnosis of capsule retention
    Mankanwal S Sachdev
    Division of Gastroentorology and Hepatology, Department of Medicine, University of Tennessee, Memphis, TN, USA
    Gastrointest Endosc 66:894-900. 2007
    ..Capsule retention is a rare but serious complication of capsule endoscopy (CE). The utility of routine abdominal radiographs after CE for the diagnosis of capsule retention is not established...