[Assessment of Left Ventricular Systolic and Diastolic Function with Retrospective Electrocardiogram Triggered 320-row Area Detector Computed Tomography: A Comparison with Ultrasound Echocardiography].
BACKGROUND
The 320-row area detector computed tomography (ADCT) for the evaluation of left ventricular (LV) systolic function has been reported, but reporting of ADCT for the evaluation of LV diastolic function (LVDF) cannot be found. The purpose of this study was to examine the usefulness of ADCT in the assessment of LV systolic and diastolic function compared to ultrasound echocardiography (Echo) as the standard of reference.


METHODS
We evaluated 60 consecutive patients (mean age 62.4 ± 13.2 years, male/female 36/24) who underwent ADCT (retrospective electrocardiogram triggered) and Echo. All patients were classified into three groups (A, B, C) according to LVDF evaluated by Echo. We examined peak filling rate (PFR) and time to peak filling (TPF) as indicator of LVDF using ADCT.


RESULTS
Good correlations between ADCT and Echo were demonstrated for the assessment of LVSF. PFR of group B (mild diastolic dysfunction) patients (1.92 ± 0.69) and group C (moderate severe diastolic dysfunction) patients (1.90 ± 0.75) were significantly lower than that of group A (normal diastolic function) patients (2.50 ± 0.43). TPF of group B (191.6 ± 54.4 ms) and group C patients (197.5 ± 64.0 ms) were significantly higher than that of group A patients (149.5±34.1 ms).


CONCLUSIONS
ADCT is useful method for the evaluation of LVSF and LV diastolic dysfunction.
Division of Radiology and Nuclear Medicine, Sapporo Medical University Hospital.
Taiki
T
Chono
Keishi
K
Ogura
Akiyoshi
A
Hashimoto
D003971:Diastole; D004452:Echocardiography / Q000295:instrumentation* / Q000379:methods*; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013599:Systole; D014057:Tomography, X-Ray Computed; D016277:Ventricular Function, Left