The phantom portion of the American College of Radiology (ACR) Computed Tomography (CT) accreditation program: Practical tips, artifact examples, and pitfalls to avoid

Medical Physics - Tập 31 Số 9 - Trang 2423-2442 - 2004
Cynthia H. McCollough1, Michael R. Bruesewitz1, Michael F. McNitt‐Gray2, Krista Bush3, Thomas Ruckdeschel4, J. Thomas Payne5, James A. Brink6, Robert K. Zeman7
1Department of Radiology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905
2Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, California 90095
3Accreditation and Standards, American College of Radiology, Reston, Virginia 20191
4Alliance Medical Physics, Alpharetta, Georgia 30004
5Radiation Oncology Department, Abbott Northwestern Hospital, Minneapolis, Minnesota 55407
6Yale-New Haven Hospital, New Haven, Connecticut 06520
7George Washington University Medical Center, Washington, DC, 20037

Tóm tắt

The ACR CT accreditation program, begun in 2002, requires the submission of approximately 20 images, several completed data sheets and printouts of three Excel worksheets. The procedure manual is very detailed, yet participants unfamiliar with the program or having minimal CT experience have needed to redo aspects of their submission, or in some cases do not receive accreditation, due to mistakes made by the physicist. This review of the phantom portion of the ACR CT accreditation program supplements the ACR provided instructions with additional photos of phantom setup, region‐of‐interest (ROI), and image placement on the film sheets, and examples of completed portions of actual (but anonymous) submissions. Common mistakes, as well as uncommon but interesting images, are shown and explanations are given as to what could have been done to avoid the problem. Additionally, a review of CT dose measurement techniques and calculations will enable the physicist to better assist sites where typical exam doses are above the ACR reference values.

Từ khóa


Tài liệu tham khảo

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10.1148/rg.226025128

10.1161/01.CIR.0000048965.56529.C2

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Medical Physics

Tập 31 Số 9

2423-2442

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