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C-2832 - How reliable is the radiologist's subjective evaluation of bone density on Computed Tomography (CT)?

Z. Abubacker, A. H. Alharbi, B. Al Maghrabi; Jeddah/SA Type: Scientific Exhibit
Area of Interests: Bones, Abdomen, Musculoskeletal bone
Imaging Technique: CT
Procedures: Perception image, Observer performance, Diagnostic procedure
Special Focuses: Osteoporosis, Demineralisation-Bone
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Aims and objectives: Traditionally, DEXA (dual energy X-ray absorptiometry) has been accepted as the gold standard for evaluating bone density .In more recent times with the widespread use of Computed Tomography (CT), there has been interest in looking at the reliability of CT in assessing bone density.   Pickhardt[...]

Methods and materials: 60 cases of CT abdomen were randomly selected between November 2014 till April 2015 with exclusion of cases with spinal metastatic deposits.    6 experienced radiologists (with over 5 years experience as a staff) subjectively evaluated their BD  and categorised them as one of th[...]

Results: Among the total patients we categorized them into three groups (normal, abnormal and intermediate). Normal  was classed as CT Hounsfield Unit (HU)>200 Abnormal  was classed as HU < 120 Intermediate  was classed as HU 121-199   Concordance between quantitative CT Bone[...]

Conclusion: Radiologist subjective evaluation of bone density is reliable and shows good concordance with objective quantification of CTBD when the CTBD was definitely normal (>200HU) or definitely osteopenic (<110 HU). Fig 7.   When the CTBD was in the range between 110 and 200 there was much great[...]

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References: Pickhardt PJ, Pooler BD, Lauder T, del Rio AM, Bruce RJ, Binkley N. Opportunistic Screening for Osteoporosis Using Abdominal Computed Tomography Scans Obtained for Other Indications. Ann Intern Med. 2013;158:588-595. doi: 10.7326/0003-4819-158-8-201304160-00003

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