Author/Authors :
Toshihisa Inoue، نويسنده , , Shigeru Watanabe، نويسنده , , Yoshiaki Masuda، نويسنده , , Katsuya Yoshida، نويسنده , , Hitoshi Imai، نويسنده , , Yasuo Imazeki، نويسنده , , Yoshiaki Ishizuya، نويسنده , , Masashi Koga، نويسنده , , Hirotoshi Kato، نويسنده , , Hiroo Ikehira، نويسنده , , Yukio Tateno، نويسنده ,
Abstract :
The magnetic resonance phase-contrast technique for the measurement of flow velocity and volume in true and false lumens was studied in six patients with chronic dissecting aneurysms. Phase-contrast images were obtained at a level perpendicular to the dissecting aneurysms of the descending aorta. As the maximum diameter of aneurysms increased, the ratio of the cross-sectional area of the false to the true lumen increased and the peak average velocity in the true lumen during systole was decreased. This technique proved invaluable for determining prognosis and operability for this condition.
