Clinical Diagnostic Value of CT Combined with MR in Grading Sacroiliac Joint Lesions in Ankylosing Spondylitis
10.12259/j.issn.2095-610X.S20251013
- VernacularTitle:CT联合MR诊断强直性脊柱炎骶髂关节病变分级的临床诊断价值
- Author:
Xuenan WU
1
;
Huawei SU
;
Man LI
Author Information
1. 海口市第三人民医院放射影像科,海南 海口 571100
- Keywords:
CT;
Magnetic resonance imaging;
Ankylosing spondylitis;
Sacroiliac joint lesions;
Bone marrow edema
- From:
Journal of Kunming Medical University
2025;46(10):106-112
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of CT combined with MRI(hereinafter referred to as combined diagnosis)in diagnosing sacroiliac joint lesions in ankylosing spondylitis(AS).Methods A retrospective study selected CT and MRI examination data from 102 AS patients with sacroiliac joint lesions admitted to the Third People's Hospital of Haikou,Hainan Province between January 2021 and July 2023.The study compared the grading and detection rates of various signs using CT,MRI,and combined diagnosis.Results MRI showed higher detection rates for AS sacroiliac joint lesions in grades I-II,bone marrow edema,tendon and ligament attachment point inflammation,subchondral cartilage destruction,synovial thickening,and subchondral fat deposition compared to CT(P<0.05).In contrast,CT demonstrated higher accuracy in detecting joint surface sclerosis,subchondral bone erosion/destruction,and joint surface hyperplasia compared to MRI(P<0.05).Combined diagnosis showed significantly higher grading and detection rates of AS sacroiliac joint lesion signs compared to MRI or CT alone(P<0.05).Conclusion MRI has high detection rates for early AS sacroiliac joint lesions,CT exhibits high sensitivity for joint surface hyperplasia,sclerosis,erosion,and destruction,and combined diagnosis demonstrates superior efficacy compared to MRI or CT individually.
