| Comparison of ACS and BLADE T2WI sequences in upper abdomen study |
| Received:June 25, 2021 Revised:August 09, 2021 Click here to download the full text |
| Citation of this paper:XU Hang,DU Fan,WEN Xi-xi,CHEN Cai-zhong,RAO Sheng-xiang,SUN Wei.Comparison of ACS and BLADE T2WI sequences in upper abdomen study[J].Chinese Journal of Clinical Medicine,2022,29(1):92-96 |
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| Author Name | Affiliation | E-mail | | XU Hang | Department of Diagnostic Radiology, Zhongshan Hospital, Fudan University
Shanghai Institute of Medical Imaging, Shanghai 200032, China | | | DU Fan | Department of Diagnostic Radiology, Zhongshan Hospital, Fudan University
Shanghai Institute of Medical Imaging, Shanghai 200032, China | | | WEN Xi-xi | Shanghai United Imaging Healthcare Co. Ltd, Shanghai 201807, China | | | CHEN Cai-zhong | Department of Diagnostic Radiology, Zhongshan Hospital, Fudan University
Shanghai Institute of Medical Imaging, Shanghai 200032, China | | | RAO Sheng-xiang | Department of Diagnostic Radiology, Zhongshan Hospital, Fudan University
Shanghai Institute of Medical Imaging, Shanghai 200032, China | | | SUN Wei | Department of Diagnostic Radiology, Zhongshan Hospital, Fudan University
Shanghai Institute of Medical Imaging, Shanghai 200032, China | sunwei19860403@sina.com |
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| Abstract:Objective To compare the application value of AI-assisted compressed sensing (ACS)-T2-weighted fast spin-echo (FSE) sequence and BLADE (proprietary name for periodically rotated overlapping parallel lines with enhanced reconstruction in MR systems from Siemens Healthcare)-T2-weighted FSE sequence in upper abdomen. Methods A total of 61 patients underwent MRI examinations using BLADE-T2-FSE and ACS-T2-FSE sequences. Images quality were qualitatively evaluated by two radiologists regarding respiratory motion artifacts, alias artifacts, gastrointestinal motion artifacts, image interlacing, depiction of bile duct and lesions, and overall image quality. The contrast ratio (CR) of lesion and liver parenchyma in the two groups were calculated and statistically analyzed. Results The examination time was 10 seconds using ACS sequence, while it was about 62 seconds using BLADE.75 lesions were detected among 61 patients, including 36 cases of hepatocellular carcinoma, 6 cases of cholangiocarcinoma, 16 cases of hepatic hemangioma, and 17 cases of liver cyst. The CR of various lesions and liver parenchyma in image of ACS-T2-FSE sequence were higher than that in BLADE-T2-FSE sequence (P<0.001). The agreement between two radiologists was consistent. Scores of respiratory motion artifacts, alias artifacts, image interlacing, depiction of bile duct and lesions, overall image quality of ACS-T2-FSE sequence were higher than those of BLADE-T2-FSE sequence (P<0.05); the gastrointestinal motion artifact score of ACS-T2-FSE sequence was slightly lower than that of BLADE-T2-FSE sequence, but there was no statistically significant difference (P=0.128). Conclusion Compared with BLADE-T2-FSE sequence, ACS technology can greatly shorten the scanning time, reduce respiratory motion artifacts and image interlacing, totally improve the quality of image diagnosis, which is worthy of promotion. |
| keywords:magnetic resonance imaging liver upper abdomen ACS BLADE T2WI |
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