Diagnostic value of MRI using proton density-weighted fat-saturated sequence for bone marrow edema in osteoarticular injury
10.3969/j.issn.1005-202X.2024.02.009
- VernacularTitle:磁共振脂肪抑制质子密度加权序列诊断骨关节外伤性骨髓水肿的价值
- Author:
Yan GAO
1
;
Xiaowen PAN
;
Wanting DONG
;
Peng XIAO
Author Information
1. 四川省骨科医院医学影像科,四川成都 610041
- Keywords:
magnetic resonance imaging;
proton density-weighted fat-saturated;
bone and joint trauma;
bone marrow edema;
signal intensity;
image quality
- From:
Chinese Journal of Medical Physics
2024;41(2):181-184
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the value of magnetic resonance proton density-weighted fat-saturated(PDWI-FS)sequence in the diagnosis of bone marrow edema(BME)in osteoarticular injury.Methods A total of 150 patients with bone and joint trauma were enrolled in the study.All patients underwent sagittal PDWI-FS sequence scan and conventional MRI sequence scan.The BME detection,signal intensity,image quality,and the signal-to-noise ratio and contrast-to-noise ratio of the lesions were compared between two methods.Results Both methods revealed that there were 225 sites of BME signs in 134 out of the 150 patients,with a higher prevalence in knee joint trauma patients.The signal intensity of the lesions was mainly grade 3 on PDWI-FS sequence and grade 2 on conventional MRI sequence,accounting for 97.78%(220/225)and 43.11%(97/225),indicating that the two methods graded signal intensity differently(Z=15.919,P<0.05).PDWI-FS sequence and conventional sequence had scores of 4.09±0.45 vs 3.88±0.39,3.65±0.42 vs 3.41±0.36,3.25±0.37 vs 3.14±0.35 and 4.21±0.38 vs 3.97±0.34 on lesion clarity,spatial resolution,anamorphosis and diagnostic confidence,and the former scored higher(t=4.319,5.314,2.645,5.765;P<0.05).The signal-to-noise ratio and contrast-to-noise ratio of the lesions on PDWI-FS sequence were 2.07±0.23 and 5.52±0.64,higher than 2.01±0.22 and 5.17±0.59 on conventional sequence,and the differences were statistically significant(t=2.309,4.925;P<0.05).Conclusion Compared with conventional MRI sequence,magnetic resonance PDWI-FS sequence can effectively enhance image quality and display lesions more clearly,providing more accurate information for the diagnosis of BME in osteoarticular injury.
