Optimized workflow and imaging protocols for whole-body oncologic PET/MRI

被引:7
作者
Ishii, Shirou [1 ]
Hara, Takamitsu [2 ]
Nanbu, Takeyuki [2 ]
Suenaga, Hiroki [1 ]
Sugawara, Shigeyasu [1 ]
Kuroiwa, Daichi [1 ]
Sekino, Hirofumi [1 ]
Miyajima, Masayuki [1 ]
Kubo, Hitoshi [2 ]
Oriuchi, Noboru [2 ]
Ito, Hiroshi [1 ]
机构
[1] Fukushima Med Univ, Dept Radiol, 1 Hikarigaoka, Fukushima, Japan
[2] Fukushima Med Univ, Adv Clin Res Ctr, Fukushima, Japan
关键词
PET/MRI; Workflow; Whole-body; Oncology; CLINICAL-EXPERIENCE; PULMONARY NODULES; PET/CT;
D O I
10.1007/s11604-016-0584-9
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Although PET/MRI has the advantages of a simultaneous acquisition of PET and MRI, high soft-tissue contrast of the MRI images, and reduction of radiation exposure, its low profitability and long acquisition time are significant problems in clinical settings. Thus, MRI protocols that meet oncological purposes need to be used in order to reduce examination time while securing detectability. Currently, half-Fourier acquisition single-shot turbo spin echo and 3D-T1 volumetric interpolated breath-hold examination may be the most commonly used sequences for whole-body imaging due to their shorter acquisition time and higher diagnostic accuracy. Although there have been several reports that adding diffusion weighted image (DWI) to PET/MRI protocol has had no effect on tumor detection to date, in cases of liver, kidney, bladder, and prostate cancer, the use of DWI may be beneficial in detecting lesions. Another possible option is to scan each region with different MRI sequences instead of scanning the whole body using one sequence continuously. We herein report a workflow and imaging protocols for whole-body oncologic PET/MRI using an integrated system in the clinical routine, designed for the detection, for example by cancer screening, of metastatic lesions, in order to help future users optimize their workflow and imaging protocols.
引用
收藏
页码:754 / 762
页数:9
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