[Ultrafast CT scanner; preliminary experience in Japan]

We evaluated the usefulness of Ultrafast CT scanner C-100 (UFCT) in 30 patients' clinical practice. UFCT was very useful not only for cardiac studies but for other body organs' studies. Simultaneous multilevel ultrafast scans of UFCT enabled us to analyse cardiac ventricular motion not only by the ejection fraction but by the change of wall thickness. We could get ultra-early contrast phase images (within one minute images from contrast medium injection start) of contiguous 15, 1 cm interval levels by high quality single slice mode of UFCT. These ultra-early phase images and late phase images would be helpful for tissue characterization.