Feasibility of an in vitro phantom in high-resolution magnetic resonance imaging of endovaginal coil
10.13406/j.cnki.cyxb.003716
- VernacularTitle:应用体外模型对阴道腔内线圈高清成像的磁共振可行性研究
- Author:
Ke ZHANG
1
;
Mingmei TANG
;
Bin YU
;
Hui LIU
;
Yuanrui PAN
;
Fajin LÜ
Author Information
1. 重庆医科大学生物医学工程学院、超声医学工程国家重点实验室,重庆 400016
- Keywords:
magnetic resonance imaging;
endovaginal coil;
in vitro phantom;
cervical cancer
- From:
Journal of Chongqing Medical University
2025;50(9):1290-1296
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To provide guidance on parameters for future endovaginal coil magnetic resonance imaging(MRI)in vivo,and to investigate the imaging potential of the endovaginal coil technique.Methods:The endovaginal coil was used to perform T2-weighted turbo spin echo sequence imaging on a phantom containing three spatial resolution modules,with variations in key imaging parameters.Signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR),and contrast(C)were calculated for images under different imaging parameters,and image quality was assessed based on scores within specified intervals.Structural display scores were determined for the three resolution modules of the phantom,and the non-parametric tests were used for statistical comparison between groups.Results:Under the main imaging parameters of a slice thickness of 2 mm,a slice gap of 0.2 mm,4 times of excitation repetition,a matrix size of 384×384,an FOV of 52 mm×52 mm,a TE of 74 ms,a bandwidth of 180 Hz/Pixel,and an acceleration factor of 18,good image quality was obtained with an acquired spatial resolution of 0.14 mm×0.14 mm×2.00 mm and a reconstructed resolution of 0.07 mm×0.07 mm×2.00 mm,and all three resolution modules were clearly visualized with a clinically acceptable imaging time.There were signifi-cant differences between groups in the imaging quality scores of slice thickness,slice gap,number of excitations,FOV,and accelera-tion factor(P<0.05),while there were no significant differences in matrix,TE,and bandwidth between groups(P=0.521,0.502,and 0.566).There were significant differences in the structural display scores for all parameters between groups(P<0.05).Conclusion:The parameters obtained in this experiment can guide the future ap-plication of endovaginal coils in the human body,demonstrating the extremely high imaging potential of this technique,and endovaginal coil has the potential of identifying small lesions in future clinical practice.
