Head and Neck Imaging
A Fast and Automatic Contrast-enhancement MR Workflow for Upper Abdominal Scan: A Preliminary Study*
Author:CHEN Yu-kun, WANG Zhen, YANG Qing-song, et al.
affiliation:Department of Radiology, Changhai Hospital of Shanghai, Secondary Military Medical University, Shanghai 200433, China
PDFAbstract
Objective A fast and automatic contrast-enhancement MR workflow for upper abdominal scan was proposed and its feasibility was evaluated on a 3T scanner. Methods A MR workflow was set up for upper abdominal scan, including localizer, coronal T2WI, Transversal T2 WI, single-shot spin-echo DWI (b=1000s/mm2 ), T1 VIBE with 2 echoes and DIXON reconstruction, and contrast-enhanced T1 VIBE. Automatic FOV positioning, automatic voice command and automatic bolus detection were applied on this workflow. 36 patients were prospectively enrolled in this study and underwent contrast enhanced MRI exam with the proposed workflow on abdomen. The exam duration of the whole workflow for every patient was recorded. Two radiologists assessed the image qualities with a two-category scale. Results All patients were able to complete the breath-hold exam under automatic-voice command. Automatic bolus detection could successfully catch the bolus on the aorta and triggered the next steps. The average exam duration of the whole workflow for all 36 patients is 12mins(16±70)s. Images of all study patients could be used for diagnosis. Conclusion The proposed automatic and fast MR workflow for upper abdomen scan can be used in clinical practices.
【Keyword】MRI; Automatic; Fast; Workflow; Upper Abdomen
【Chart number】R445.2;R57
【Document Identification Number】A
【DOI】: 10.3969/j.issn.1672- 5131.2018.01.039
Chinese journal of CT and MRI
th16Volume, th 1 Issue
2018Year01Month
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