Keywords:
Performed at one institution, Cross-sectional study, Retrospective, Image verification, Technology assessment, Technical aspects, Comparative studies, Echocardiography, CT, Cardiac, Cardiology
Authors:
A. inakami1, K. miyauchi1, Y. katsuyama1, R. ogawa1, M. HABUCHI1, T. washio1, S. Takahashi2, A. Matsumoto3; 1hyogo/JP, 2Suita/JP, 3nagoya/JP
DOI:
10.26044/ecr2020/C-02841
Conclusion
Phase-interpolated cardiac CT using deformable, voxel-to-voxel registration motion coherence algorithm assesses right ventricular function, with excellent reproducibility of the both TAPSE and RVFAC.
CT is generally not a first-line examination for calculating only right ventricular function.
However, after a standard coronary CT, functional assessments can be performed without any additional contrast material or radiation exposure via some post-processing calculation steps.
As a new method in functional cardiac imaging, CT seems to offer some solutions for the difficulties faced in echocardiography because CT does not necessitate a good acoustic window and is not operator dependent.
CT can give additional information about right ventricular function in patients referred for coronary artery analysis and myocardial anatomy.
Limitation
The gold standard for quantification of size, ejection fraction, and stroke volume of the RV is cardiac magnetic resonance imaging (MRI)and the gold standard for the measurement of pulmonary pressures is right heart catheterization.
Although echocardiography is the most frequently applied technique in the clinical setting, the lack of the gold standard measurements is a limitation of our study.
And more, ß-blockers which are applied before the CT, may alter right ventricular functions.
We tried to reduce this potential negative effect on the study results by performing the CT and echocardiographic examinations on the same day, nevertheless, could not exclude an all effect of ß-blockers in patients examined with CT.