正电子发射断层扫描（PET）与磁共振成像（MR）同步成像。

Simultaneous PET and MR imaging.

作者信息

Shao Y, Cherry S R, Farahani K, Meadors K, Siegel S, Silverman R W, Marsden P K

机构信息

Crump Institute for Biological Imaging, Department of Molecular and Medical Pharmacology, UCLA School of Medicine 90095, USA.

出版信息

Phys Med Biol. 1997 Oct;42(10):1965-70. doi: 10.1088/0031-9155/42/10/010.

DOI:10.1088/0031-9155/42/10/010

PMID:9364592

Abstract

We have developed a prototype PET detector which is compatible with a clinical MRI system to provide simultaneous PET and MR imaging. This single-slice PET system consists of 48 2 x 2 x 10 mm3 LSO crystals in a 38 mm diameter ring configuration that can be placed inside the receiver coil of the MRI system, coupled to three multi-channel photomultipliers housed outside the main magnetic field via 4 m long and 2 mm diameter optical fibres. The PET system exhibits 2 mm spatial resolution, 41% energy resolution at 511 keV and 20 ns timing resolution. Simultaneous PET and MR phantom images were successfully acquired.

摘要

我们已经开发出一种与临床MRI系统兼容的PET探测器原型，以实现PET和MR成像的同步进行。这个单切片PET系统由48块2×2×10立方毫米的LSO晶体组成，呈38毫米直径的环形配置，可放置在MRI系统的接收线圈内，并通过4米长、2毫米直径的光纤与置于主磁场外的三个多通道光电倍增管相连。该PET系统具有2毫米的空间分辨率、在511 keV时41%的能量分辨率和20纳秒的时间分辨率。已成功获取PET和MR同步的体模图像。