Clinical diagnostic value of Fast Dixon technique in MR hip joint scan
10.3969/j.issn.1002-1671.2024.02.033
- VernacularTitle:快速水脂分离技术在MR髋关节扫描中的临床应用价值
- Author:
Yanqiang QIAO
1
;
Yifan QIAN
;
Xiaoshi LI
;
Juan TIAN
;
Xiaohua GAO
;
Yue QIN
Author Information
1. 西安大兴医院影像科,陕西 西安 710016
- Keywords:
magnetic resonance imaging;
hip joint;
image quality;
Fast Dixon
- From:
Journal of Practical Radiology
2024;40(2):315-318
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the application value of Fast Dixon technique in MR hip joint scanning.Methods Fifty young volunteers were recruited to perform axial and coronal MR scans of the hip joint.The scanning sequence was Fast Dixon T2WI sequence and conventional Dixon T2WI sequence.A double-blind five-point scale was used to subjectively evaluate the image quality of the two types sequences.The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of the axial image were measured at the maximum level of the bladder display.Results In the scores of"good contrast between surrounding tissue and femoral head signal"and"overall image quality",the Fast Dixon T2WI sequence was better than the conventional Dixon T2WI sequence,and the difference was statistically significant(P<0.05).There was no significant difference in the average scores of"whether bladder artifacts affected the diagnosis"and"whether the fat suppression effect was good"between Fast Dixon T2WI sequence and conventional Dixon T2WI sequence(P>0.05).In the objective image quality evaluation,the SNR and CNR of Fast Dixon T2WI sequence were better than those of conventional Dixon T2WI sequence,and the difference was statistically significant(P<0.05).Conclusion The image quality score of the hip joint of young volunteers with Fast Dixon T2WI sequence combined with multiple averaging excitation technique is significantly higher than that of conventional Dixon T2WI sequence.The Fast Dixon T2WI sequence can increase the effect of inhibiting fat and motion artifacts without increasing the scanning time,and the joint face ratio is good.Fast Dixon technique can replace the traditional Dixon technique,thus becoming an optimal choice for hip joint MR scanning.
