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Purpose There are different clinical cardiac applications of dual source computed tomography ( DSCT). Here, we aimed to compare the DSCT with the transthoracic echocardiography ( TTE) for evaluating the Wilkins score and planimetric mitral valve area ( MVA) of a rheumatic stenotic mitral valve. Materials and Methods We prospectively evaluated mitral valvular structure and function in 31 patients with known mitral stenosis undergoing electrocardiogram-gated, second-generation DSCT, in our heart center for different indications. Mitral valve was evaluated using Wilkins score, and also, the planimetric MVA was assessed. Results We found a significant difference between MVAs determined by DSCT (average 1.42 ± 0.44 cm2) and MVAs determined by TTE (average 1.35 ± 0.43 cm2; difference 0.07 ± 0.16 cm2; P = 0.018). Linear regression analysis revealed a good correlation between the two techniques (r = 0.934; P < 0.0001). The limits of agreement for DSCT and TTE in the Bland-Altman analysis were ±0.31 cm2. DSCT using TTE as the reference enabled good discrimination between mild and moderate-to-severe stenosis and had an area under the ROC curve of 0.967 ( CI 0.912-1.023; P < 0.0001). Wilkins scores obtained by DSCT (7.51 ± 1.17, range 5-10) and TTE (8.16 ± 1.27, range 6-10) had a moderate correlation (r = 0.686; P < 0.0001). Conclusion We found that planimetric MVA measurements assessed by DSCT were closely correlated with MVA calculations by TTE. The moderate correlation was observed for the Wilkins score. [ABSTRACT FROM AUTHOR]

Background Effect of pulmonary hypertension ( PH) on right ventricular ( RV) geometry constitutes an ideal target to assess both pulmonary artery pressure ( PAP) and its physiological importance. In this study, we evaluated the diagnostic power of the basal segment of septomarginal trabeculation ( SMT) in predicting the PH and RV hypertrophy by cardiovascular magnetic resonance ( CMR) in patients with idiopathic pulmonary arterial hypertension ( IPAH) and Eisenmenger's syndrome ( ES). Methods Eleven patients with IPAH, seven patients with ES, and 20 healthy controls were enrolled. CMR was used to measure the area and the thickness of the basal segment of SMT and right ventricular free wall ( RVFW). Pulmonary artery systolic pressures ( PASPs) were estimated by transthoracic echocardiography ( TTE) with continuous-wave Doppler analysis measuring maximal tricuspid regurgitation ( TR) velocity. Late gadolinium enhancement ( LGE) findings of CMR and brain natriuretic peptide ( BNP) levels were also obtained in all patients and control group. Results The area and the thickness of the basal segment of SMT were higher in patients with IPAH and ES than control group ( P<.001). Pulmonary artery dimension, end-diastolic diameter of RV, RVFW thickness, and BNP levels were found to be significantly correlated with PAP ( P<.001). LGE was present at the insertion point of RV only in patients group ( P<.001). Conclusions Increased area and thickness of the basal segment of SMT are easily measurable noninvasive markers of PH in patients with IPAH and ES. [ABSTRACT FROM AUTHOR]