Value of Reduced Field-of-view DWI in Quantitative Assessment of Axial Spondyloarthritis
10.13471/j.cnki.j.sun.yat-sen.univ（med.sci）.2023.0218
- VernacularTitle:小视野DWI在中轴型脊柱关节炎定量评估中的价值
- Author:
Ying-ying ZHAN
1
;
Yun-fei ZHU
1
;
Xiao-jun HE
1
;
Xi-meng LI
1
;
Chao-ran LIU
1
;
Ke ZHANG
1
;
Wen-juan LI
1
;
Guo-bin HONG
1
Author Information
1. Department of Radiology， The Fifth Affiliated Hospital of Sun Yat-sen University， Zhuhai 519000，China
- Publication Type:Journal Article
- Keywords:
reduced field-of-view DWI;
ankylosing spondylitis;
magnetic resonance imaging;
apparent diffusion coefficient
- From:
Journal of Sun Yat-sen University(Medical Sciences)
2023;44(2):326-334
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo investigate the value of reduced field-of-view DWI （r-FOV DWI） in quantitative assessment of axial spondyloarthritis. MethodsA total of 112 patients with chronic back pain or suspected axial spondyloarthritis receiving full field-of-view DWI （f-FOV DWI） and reduced field-of-view DWI （r-FOV DWI） from December 2019 to December 2021 were enrolled. Next， subjective image quality assessment （anatomical detail， artifacts， distortion， overall image quality） and objective image quality assessment including （signal to noise ratio and contrast to noise ratio） were conducted by two experienced radiologists. In addition， the Apparent Diffusion Coefficient （ADC） values of three groups （active group， inactive group， and control group） on the two DWI sequences were measured by the two radiologists， respectively. Finally， the consistency of measurement between the two researchers was evaluated and the differences in ADC values was compared. Results102 patients were included and were divided into three groups， including the active group （n=32）， inactive group （n=29）， and control group （n=41） according to ASAS diagnostic criteria. All subjective and objective image quality metrics were rated in favor of r-FOV DWI images compared with f-FOV DWI images ［overall image quality： DWI 4（3~4） vs. 3（3~3） and SNR： 6.58（5.05~10.38） vs. 4.46（2.37~10.04）， CNR： 2.04（-1.14~8.29） vs. 0.97（-8.19~7.12）；P＜0.05］. Inter-rater consistency of the two researchers were 0.60~0.74. According to the AUC curve， group inactive vs. control showed r-FOV DWI was better than f-FOV DWI. In other groups （lesion vs. control， active vs. inactive）， there were no differences between both sequences（P＜0.05）. ConclusionThe subjective image quality score and signal to noise ratio of r-FOV DWI were higher than those of f-FOV DWI， which could be used for quantitative assessment of axial spondyloarthritis.
