Comparison on image quality of insulinoma 5.0T and 3.0T non-contrast MRI
10.13929/j.issn.1003-3289.2024.05.011
- VernacularTitle:对比5.0T与3.0T平扫MRI显示胰岛素瘤质量
- Author:
Huijia ZHAO
1
,
2
;
Liang ZHU
;
Ruichen GAO
;
Bohui YIN
;
Gan SUN
;
Ke XUE
;
Yuxin YANG
;
Qiang XU
;
Wenming WU
;
Feng FENG
Author Information
1. 中国医学科学院北京协和医学院北京协和医院基本外科,北京 100730
2. 疑难重症及罕见病国家重点实验室,北京 100730
- Keywords:
insulinoma;
magnetic resonance imaging;
image quality;
diagnosis;
prospective studies
- From:
Chinese Journal of Medical Imaging Technology
2024;40(5):686-689
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare image quality of 5.0T and 3.0T non-contrast MRI for displaying insulinoma.Methods Twelve patients with insulinoma were prospectively enrolled,and non-contrast abdominal T1WI,T2WI as well as diffusion-weighted imaging(DWI)were acquired using 5.0T and 3.0T MR scanners,respectively.The subjective scores of image quality of each sequence of 5.0T and 3.0T MRI,also of tumor-pancreas parenchyma contrast scores were compared.The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of insulinomas were observed,and the displayed rate of insulinoma by each sequence and overall MRI were compared.Results The subjective scores of 5.0T T1WI and DWI were higher than those of 3.0T T1WI and DWI(both P＜0.05),but not significantly different between 5.0T and 3.0T T2WI(P=0.166).Furthermore,the tumor-pancreas parenchyma contrast score of 5.0T T1WI was higher than that of 3.0T T1WI(P=0.023),but not significantly different between 5.0T and 3.0T T2WI,nor between 5.0T and 3.0T DWI(both P＞0.05).SNR of insulinomas on 5.0T T2WI were higher than on 3.0T T2WI(P=0.015),however,no significant difference of SNR was found between 5.0T and 3.0T T1WI,nor between 5.0T and 3.0T DWI(both P＞0.05).CNR of insulinomas on all 5.0T MRI were not significantly different with those on 3.0T MRI(all P＞0.05).The displayed rate of insulinoma on 5.0T T1WI,T2WI and DWI was 100％(12/12),66.67％(8/12)and 83.33％(10/12),respectively,on 3.0TT1WI,T2WI and DWI was 75.00％(9/12),58.33％(7/12),66.67％(8/12),respectively.The overall displayed rate of insulinoma on 5.0T and 3.0T MRI was 100％(12/12)and 83.33％(10/12),respectively.Conclusion Compared with 3.0T MRI,5.0T MRI was superior for displaying insulinoma,hence being helpful for diagnosis.
