Variation of MRI Coil Uniformity Caused by μPET Shieldings

被引：0

作者：

Solis-Najera, S. E. ^{[1
,2
]}

Tomasi, D. ^{[1
]}

Rodriguez, A. O. ^{[3
]}

机构：

[1] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA

[2] Univ Nacl Autonoma Mexico, Fac Ciencias, Mexico City 04510, DF, Mexico

[3] Univ Autonoma Metropolitana Iztapalapa, Lab Imagen Resonancia Magnetica, Mexico City 09340, DF, Mexico

来源：

MEDICAL PHYSICS | 2012年 / 1494卷

关键词：

RF coil; magnetic resonance imaging; positron emission tomography;

D O I：

10.1063/1.4764596

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A single imaging modality cannot provide information on all aspects of structure and function. The combination of positron emission tomography and magnetic resonance imaging offers tantalizing opportunities, but also significant challenges. In particular, cross talk between the magnetic resonance imaging transceiver and the positron emission tomography digital electronics can lead to interfering RF noise in both imaging modalities. The electromagnetic shielding minimizes the RF interference between the instruments, minimizing MRI artifacts and protecting the delicate components of the PET electronics from MRI RF pulses. The acquired image is degraded in the presence of the electromagnetic shield and the RF coil is one of the components that can improve the image quality. The saddle coil array showed a better RF field uniformity than the others in the axial direction.

引用

页码：50 / 53

页数：4