Bestimmung linksventrikulärer Funktionsparameter mittels EKG-gesteuerter Mehrschicht-Computertomographie im Vergleich mit der invasiven Ventrikulographie

摘要: PURPOSE To evaluate the accuracy of left ventricular function using a multidetector CT (MDCT) with retrospective ECG-gating and to compare results conventional ventriculography. MATERIALS AND METHODS In 26 patients, retrospectively ECG-gated MDCT heart (Volume Zoom, Siemens, Germany) as well coronary angiography including ventriculography was performed exclude or follow artery disease. examination (120 KV, 400 mAs) carried out 4 x 1 mm collimation (500 ms gantry rotation time). For angiography, 150 ml contrast media injected intravenously at flow rate ml/s. All data sets functional cardiac parameters were reconstructed in end-systolic end-diastolic phase. End-systolic volume (ESV), (EDV) ejection fraction (EF) determined from multiplanar reformations orthogonally through short axis analyzed special evaluation software (ARGUS, Siemens). The compared ESV, EDV EF obtained invasive RESULTS all cases, sufficient quality images achieved. (150.1 +/- 16.2 vs. 138.7 16.9 ventriculography; mean difference 11.4 12.7 ml; r = 0.51) had an acceptable correlation ventriculography, ESV (58.1 14.6 50.2 13.4 7.9 8.8 0.81) (60.9 13.6 % 64.9 %; 4.0 6.2 0.79) showed good correlation. comparison tended overestimate significantly (p 0.008) 0.003) underestimate 0.001). CONCLUSION enables efficient estimation function, providing important additional information non-invasive imaging MDCT. However, EVS overestimated underestimated