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Updated: Feb 14, 2026
Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Simplified Bernoulli formula to predict flow limiting stenosis at coronary computed tomography angiography
Nobuo Tomizawa1, Kodai Yamamoto1, Shinichi Inoh1
1Department of Radiology, New Tokyo Hospital, 1271 Wanagaya, Matsudo, Chiba 270-2232, Japan.
Objective:
To compare the diagnostic performance of estimated energy loss (EEL) with diameter stenosis (DS) to estimate significant stenosis by fractional flow reserve (FFR).
Materials And Methods:
One hundred twenty-five patients were included. EEL was calculated using DS, lesion length, minimal lumen area and left ventricular volume. FFR ≤ 0.80 was determined significant.
Results:
EEL improved the accuracy from 63% (95% confidence interval (CI): 55-72%) to 83% (95% CI: 75-89%, p < 0.0001). EEL increased the area under the receiver operating characteristics curve from 0.63 to 0.85 (p < 0.0001).
Conclusions:
EEL improved the diagnostic performance to detect functionally significant stenosis than DS.
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