[Assessment of right ventricular cardiac function using 64-detector CT: comparison with MRI].
OBJECTIVE
To investigate the value of 64-detector spiral computed tomography versus MRI in the assessment of right ventricular function.


METHODS
Thirty healthy volunteers (15 males, 15 females, 48 +/- 24 years) underwent 64-detector spiral computed tomography CT and breath-hold MRI. With semiautomatic contour detection software, the parameters of end-diastolic volume, end-systolic volume, stroke volume and ejection fraction were determined from short-axis CT reformations (MPR) created at every 5% of RR-interval. The results from CT were compared with those from MRI using Pearson correlation test and Bland-Altman plot.


RESULTS
The CT values of mean end-diastolic volume (146 +/- 27) ml, end-systolic volume (70 +/- 20) ml, stroke volume (75 +/- 12) ml and ejection fraction (52% +/- 5%) correlated well with those by MRI [146 +/- 25 ml (r = 0.959), 66 +/- 17 ml (r = 0.914), 80 +/- 15 ml (r = 0.706), 55% +/- 7% (r = 0.612)]. A strong correlation between MSCT and MRI was also found in the Bland-Altman plot.


CONCLUSIONS
64-detector spiral CT can accurately assess the right ventricular function. It is a valuable method for evaluating cardiac function.
Liang
Lei
L
Department of Radiology, Xuanwu Hospital of Capital Medical University, Beijing 100053, China.
Xu
Wei
W
Li
Kun-cheng
KC
Du
Xiang-ying
XY
Gao
Yan
Y
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D036542:Tomography, Spiral Computed / Q000379:methods*; D016278:Ventricular Function, Right; D055815:Young Adult