Seminars in musculoskeletal radiology
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Semin Musculoskelet Radiol · Sep 2007
ReviewOptimizing imaging techniques in the postoperative patient.
Postoperative patients may develop complications requiring imaging. Although any imaging technique can be used to investigate these patients, the presence of metal hardware in the region of interest may distort the image and interfere with diagnosis. It is important to understand why this distortion occurs and how to compensate for it. ⋯ Like CT, metal artifacts at MR imaging depend on the type of hardware alloy. Hardware-related artifacts at MR imaging can be reduced by using appropriate pulse sequences, such as fast or turbo spin echo and inversion recovery. Additionally, important pulse sequence modifications that are addressed here include manipulation of the receiver bandwidth and orientation of the frequency encode axis.
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Myeloma is the most common primary bone malignancy and one of the most common hematologic malignancies. Research on myeloma constantly produces new information on genetic factors, imaging techniques, and treatment complications among others that is of use to patients, referring physicians, and radiologists. This update emphasizes new developments regarding imaging techniques for diagnosis, staging, and follow-up of myeloma patients. Advances in whole body radiography, whole body computed tomography, whole body magnetic resonance imaging, and whole body nuclear techniques (including sestamibi and positron emission tomography) are discussed.