TY - JOUR
T1 - Coronary calcium measurements by double helical computed tomography
T2 - Using the average instead of peak density algorithm improves reproducibility
AU - Shemesh, Joseph
AU - Tenenbaum, Alexander
AU - Kopecky, Kenyon K.
AU - Apter, Sara
AU - Rozenman, Judith
AU - Itzchak, Yacov
AU - Motro, Michael
PY - 1997
Y1 - 1997
N2 - RATIONALE AND OBJECTIVES. Coronary calcium (CC) measured by fast computed tomography (CT) was proposed recently as a noninvasive method of monitoring the coronary atherosclerotic process. Assessment of the reproducibility of CC measurements (mainly interstudy variability) is essential for consistent interpretation of serial studies. METHODS. The authors scanned 74 patients (50 men and 24 women) twice on the same day to determine the interstudy variability of a new scoring algorithm, using the average instead of conventional peak CT density values. RESULTS. Nineteen patients had no calcium on either scan. In the remaining 55 patients, interstudy variability was decreased by 31% using the average algorithm (32%- 23%; P < 0.001). CONCLUSIONS. Using the average instead of conventional peak density score provides better reproducible measurements of calcium by double helical CT.
AB - RATIONALE AND OBJECTIVES. Coronary calcium (CC) measured by fast computed tomography (CT) was proposed recently as a noninvasive method of monitoring the coronary atherosclerotic process. Assessment of the reproducibility of CC measurements (mainly interstudy variability) is essential for consistent interpretation of serial studies. METHODS. The authors scanned 74 patients (50 men and 24 women) twice on the same day to determine the interstudy variability of a new scoring algorithm, using the average instead of conventional peak CT density values. RESULTS. Nineteen patients had no calcium on either scan. In the remaining 55 patients, interstudy variability was decreased by 31% using the average algorithm (32%- 23%; P < 0.001). CONCLUSIONS. Using the average instead of conventional peak density score provides better reproducible measurements of calcium by double helical CT.
KW - Coronary calcium
KW - Reproducibility
KW - Spiral computed tomography
UR - http://www.scopus.com/inward/record.url?scp=0031461063&partnerID=8YFLogxK
U2 - 10.1097/00004424-199709000-00001
DO - 10.1097/00004424-199709000-00001
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AN - SCOPUS:0031461063
SN - 0020-9996
VL - 32
SP - 503
EP - 506
JO - Investigative Radiology
JF - Investigative Radiology
IS - 9
ER -
