Abstract 2415: Cardiac Functional Analysis with 256 Multislice Computed Tomography in Clinical Cases
Purpose The aim of this paper is to clarify advantages of cardiac functional analysis with one-beat whole heart imaging using the 2nd spec 256-multislice CT (MSCT) in clinical cases with heart disease.
The study group comprised 10 patients with heart disease (two old myocardial infarction, seven angina pectoris and one vasospastic angina).
The gantry rotation speed of 256-MSCT was 0.5 second per rotation. The scan coverage was 12.8 cm (0.5 mm slice thickness x 256). The contrast medium of 40 to 60 ml of 300 mg-Iodine / mg was intravenously injected at the rate of 4 ml / s. The scan time was 1.5 seconds to cover one cardiac cycle during breath hold.
The animated movies of MPR (2-chamber, 3-chamber, short axial) and 3D ventriculography were generated (Figure⇓). The wall motion was evaluated and scored. The left ventricular volumes such as end-diastolic (EDV) and end-systolic volumes (ESV) and the ejection fraction (EF) were calculated.
The movies of MPR and 3D ventriculography were expressed precisely very smoothly and the regional cardiac dysfunction of all patients was clearly demonstrated. Banding artifact and gradation of contrast medium were never observed.
The parameters such as EDV, ESV, EF and wall motion score were validated by echocardiogram, MRI and conventional (invasive) biplane left ventriculography.
Conclusions The 2D and 3D movies; one-beat image by one-beat scan were provided for the first time.