TY - JOUR
T1 - Computerized bone densitometric analysis
T2 - Operator-dependent errors
AU - Staron, Ronald B.
AU - Greenspan, Robin
AU - Miller, Theodore T.
AU - Bilezikian, John P.
AU - Shane, Elizabeth
AU - Haramati, Nogah
PY - 1999/5
Y1 - 1999/5
N2 - PURPOSE: To determine the nature and relative frequency of operator- dependent data analysis errors in dual x-ray absorptiometry. MATERIALS AND METHODS: Over 40 months, 2,528 dual x-ray absorptiometric examinations of the forearm, femoral neck, and lumbar spine were performed by 11 technologists by using standard techniques and software. Each analysis was reviewed by a radiologist; errors were recorded and corrected. RESULTS: There were no forearm analysis errors. There were 24 (0.9%) femoral neck analysis errors, of which 23 resulted from misplacement of the analysis region. There were 33 (1.3%) spinal analysis errors, of which 24 resulted from misplacement of intervertebral disk space markers. Analysis errors of the femur and spine resulted in six misdiagnoses (0.2%). CONCLUSION: Misdiagnosis due to analysis errors is rare. Femoral neck analysis errors were easily detectable, but accurate spinal analyses dependent on accurate identification of vertebral end plates and posterior elements. Nonetheless, these potentially serious errors can be detected and corrected if the analyses are reviewed and interpreted by a supervising physician who is familiar with the relevant anatomy, proper analysis techniques, and factors - such as artifacts - that adversely affect the accuracy of the analysis.
AB - PURPOSE: To determine the nature and relative frequency of operator- dependent data analysis errors in dual x-ray absorptiometry. MATERIALS AND METHODS: Over 40 months, 2,528 dual x-ray absorptiometric examinations of the forearm, femoral neck, and lumbar spine were performed by 11 technologists by using standard techniques and software. Each analysis was reviewed by a radiologist; errors were recorded and corrected. RESULTS: There were no forearm analysis errors. There were 24 (0.9%) femoral neck analysis errors, of which 23 resulted from misplacement of the analysis region. There were 33 (1.3%) spinal analysis errors, of which 24 resulted from misplacement of intervertebral disk space markers. Analysis errors of the femur and spine resulted in six misdiagnoses (0.2%). CONCLUSION: Misdiagnosis due to analysis errors is rare. Femoral neck analysis errors were easily detectable, but accurate spinal analyses dependent on accurate identification of vertebral end plates and posterior elements. Nonetheless, these potentially serious errors can be detected and corrected if the analyses are reviewed and interpreted by a supervising physician who is familiar with the relevant anatomy, proper analysis techniques, and factors - such as artifacts - that adversely affect the accuracy of the analysis.
KW - Bones, absorptiometry
KW - Computers, diagnostic aid
KW - Femur, abnormalities
KW - Hip, radiography
KW - Osteoporosis
KW - Spine, mineralization
KW - Spine, radiography
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U2 - 10.1148/radiology.211.2.r99ma55467
DO - 10.1148/radiology.211.2.r99ma55467
M3 - Article
C2 - 10228530
AN - SCOPUS:0033005399
SN - 0033-8419
VL - 211
SP - 467
EP - 470
JO - RADIOLOGY
JF - RADIOLOGY
IS - 2
ER -