新世代磁振造影技術：高時空解析度寬頻磁振造影

Abstract

Despite years of development, magnetic resonance imaging (MRI) continues to suffer from the limitations of long scanning time and low resolution, when compared to computer tomography (CT) technology. Ranked among the most important medical imaging technologies, MRI provides abundant anatomical information as well as physiological in vivo data, revealing microscopic as well as macroscopic features of biological tissue. To meet the increasing demand of such a versatile imaging modality, various methods of accelerating MRI have been developed over the past several decades. In this study, we propose two types of Wideband MRI techniques as a means of significantly increasing the speed of both 2D 3D MR imaging process. We have investigated the theoretical underpinnings of these techniques and proposed methods to enhance image-qualities. Through sequence design and adequate signal processing, accelerated 2D 3D images can be obtained without compromise. Routine usage of Wideband MRI can reduce scan times to between 1/2 and 1/8 the time currently required. From real-time biological information to functional imaging, the improved temporal/spatial resolution provided by Wideband MRI technology enables a wide variety of applications never before envisioned, and paves the way for fast whole-body early-stage cancer screening in the near future. Shorter scanning times with Wideband MRI would undoubtedly improve patient experience in MR screening. More importantly, Wideband MRI could increase patient throughput, providing significant financial benefits for the health industry around the world.