Comparison of fetal imaging quality and maternal comfort level in different positions in a super large-bore magnet
10.3969/j.issn.1002-1671.2023.12.029
- VernacularTitle:超大孔径MR下不同体位胎儿成像质量及孕妇舒适度比较
- Author:
Aonan WANG
1
;
Jiajia XU
;
Ran HUO
;
Ying LIU
;
Huishu YUAN
Author Information
1. 北京大学第三医院放射科,北京 100191
- Keywords:
fetal;
magnetic resonance imaging;
left lying position;
the third trimester;
comfort level;
super large-bore
- From:
Journal of Practical Radiology
2023;39(12):2038-2041
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the fetal imaging quality in different positions and the maternal comfort level in a super large-bore magnet,so as to estimate the application value of left lying position scanning in fetal brain MRI.Methods A total of 32 pregnant women in the third trimester who underwent fetal brain imaging in a super large-bore magnet(75cm)were collected.Each subject completed left lying position and supine position scanning and scored the comfort of the two.Radiologists scored the image subjectively,and objectively measured signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of fetal brain images.Results The comfort score of the left lying position(4.3±0.7)was higher than that of the supine position(3.4±0.7),and the difference was statistically significant(P＜0.001).The subjective score showed that there was no significant difference between the left lying position and the supine position in terms of brain image quality(P＞0.05),which could meet the needs of clinical diagnosis.The objective score showed that SNR of midbrain in left lying position was higher than in supine position(P＜0.05).The CNR of left occipital lobe in left lying position was higher than in supine position(P＜0.05).Conclusion In super large-bore magnet,left lying position scanning is a safe and pregnancy-friendly option that can not only improve maternal comfort level,but also improve fetal brain imaging.
