title: Assessment of right ventricular function with 320-slice volume cardiac CT: comparison with cardiac magnetic resonance imaging.
abstract: To evaluate the accuracy and feasibility of right ventricular function parameters measurement using 320-slice volume cardiac CT. Retrospective analysis of 50 consecutive patients (23 men, 27 women) with suspected pulmonary diseases was performed in electrocardiogram (ECG)-gated cardiac CT and cardiac magnetic resonance (CMR). Parameters including right ventricular end-diastolic volume (RVEDV), right ventricular end- systolic volume (RVESV), right ventricular stroke volume (RVSV), right ventricular cardiac output (RVCO), and right ventricular ejection fraction (RVEF) were semi-automatically and separately calculated from both CT and CMR data. Significant difference between measurements was measured by paired t test and two-variable linear regression analysis with Pearson's correlation coefficient. Bland-Altman analysis was performed in each pair of parameters. There was little variability between the measurements by the two observers (kappa = 0.895-0.980, P < 0.05). There was good correlation between all parameters obtained by CT and CMR (P < 0.001): RVEDV (108.5 ± 21.9 ml, 113.5 ± 24.8 ml, r = 0.944), RVESV (69.8 ± 33.4 ml, 73.2 ± 35.4 ml, r = 0.972), RVSV (39.0 ± 13.2 ml, 40.2 ± 13.3 ml, r = 0.977), RVCO (2.6 ± 0.7 l, 2.6 ± 0.7 l. r = 0.958), RVEF (38.8 ± 19.1 %, 39.1 ± 19.3 %, r = 0.990), and there was no significant difference between CT and CMR measurements in RVEF (n = 50, t = -0.677, P > 0.05). 320-slice volume cardiac CT is an accurate non-invasive technique to evaluate RV function.
authors.affiliation: Department of Radiology, Anzhen Hospital/Capital Medicine of University, Anzhen Road No. 2, Chaoyang District, Beijing, China.
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Huang
authors.forename: Xin
authors.initials: X
authors.lastname: Pu
authors.forename: Ruiyu
authors.initials: R
authors.lastname: Dou
authors.forename: Xi
authors.initials: X
authors.lastname: Guo
authors.forename: Zixu
authors.initials: Z
authors.lastname: Yan
authors.forename: Zhaoqi
authors.initials: Z
authors.lastname: Zhang
authors.forename: Meng
authors.initials: M
authors.lastname: Li
authors.forename: Hong
authors.initials: H
authors.lastname: Jiang
authors.forename: Biao
authors.initials: B
authors.lastname: Lu
mesh_terms: D054893:Cone-Beam Computed Tomography; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D016014:Linear Models; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D013318:Stroke Volume; D018497:Ventricular Dysfunction, Right / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D016278:Ventricular Function, Right