[Fundamental study of three-dimensional coherent oscillatory state acquisition for the manipulation of image contrast: 3D-COSMIC in the spinal region].

Abstract

Balanced sequence, three-dimensional fast imaging employ steady state acquisition (3D-FIESTA) as an example, was often used for colangiopancretography and aortagraphy in the chest and the aorta, and venography in the extremity and other body parts, because this had the high signal to noise ratio and the short acquisition time. 3D-coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC) developed recently is a sequence thought about based on 3D-FIESTA. We investigated the basic property of 3D-COSMIC compared with 3D-FIESTA in phantom and volunteer scan image study. At result, 3D-COSMIC was superior to 3D-FIESTA at signal to noise ratio and contrast on phantom image, contrast and visual evaluation on volunteer scan image of detection of tissue on spinal region. 3D-COSMIC was useful sequence in spinal region.