心血管MRI第一部分--磁共振基本物理原理及成像策略

MRI以其独特的优势广泛应用于临床,特别是在心血管系统疾病中的诊断价值得到日益体现。心血管MRI(CMR)能无创地一站式评价心血管的解剖、功能、心肌灌注和病变的组织特性,并且评价的可重复性高。CMR成像技术内容丰富,尚具挑战性,需克服心脏自身和随呼吸的运动伪影。MRI的软硬件系统性能不断提高,特别是磁场强度革命性地提升,使得成像技术不断地完善和更新。作者用4个篇章分别阐明上述MRI尤其是CMR的基本成像原理及技术要点,致力于用简明易懂的语言使大多数放射科一线工作者能轻松愉悦地领悟MRI尤其是CMR的魅力。此文为第一部分,归纳MRI基本物理原理及MR图像的产生过程。

Cardiovascular magnetic resonance imaging:Part I--The basic physics and imaging strategies of magnetic resonance

Magnetic resonance（MR） imaging has been widely used in clinical routine,especially in cardiovascular disease diagnosis,due to its prominent advantage.Cardiovascular magnetic resonance（CMR） can evaluate the anatomy,function,myocardial perfusion and characterization of heart non-invasively in one-stop.Cardiac and respiratory motion is major problem in CMR imaging.It makes CMR imaging be more challenging than any other imaging modality.As the performance of MR hardware and software system uptakes,especially for the substantial increasing of the strength of magnet,the imaging technique is improved persistently.The authors try their best to describe the fundamental physics and key technological points of MR,especially CMR in four successive articles.In first article,the physics of MR and progress of MR image generating were summarized.