Multi-modal imaging technology combined with evaluation of knee joint occult injury: comparative analysis of MSCT, DR and MRI fat suppression sequences
10.13491/j.issn.1004-714X.2026.02.010
- VernacularTitle:多模态影像技术评估膝关节隐匿性损伤：MSCT、DR与MRI脂肪抑制序列的对比分析
- Author:
Yuangang ZHANG
1
;
Yalong YANG
2
;
Fei ZHAO
3
;
Xiaojun KANG
4
Author Information
1. Magnetic Resonance Diagnosis Department, Norinco General Hospital, Xi’an 710065, China.
2. Joint Surgery Department, Norinco General Hospital, Xi’an 710065, China.
3. CT Diagnosis Departmen, Norinco General Hospital, Xi'an 710065, China.
4. Department of Imaging, Shenmu Hospital (Affiliated Shenmu Hospital of Northwest University), Yulin 719300, China.
- Publication Type:OriginalArticles
- Keywords:
Knee joint injury;
Hidden injury;
MSCT;
DR;
MRI fat suppression technique;
Sensitivity
- From:
Chinese Journal of Radiological Health
2026;35(2):221-228
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the consistency of multi-slice spiral CT (MSCT), Digital Radiography (DR) and fat-suppression MRI in detecting occult knee joint injury. Method Clinical data from 150 patients with suspected occult knee injuries who presented to the Department of imaging at the General Hospital of Ordnance Industry between August 2022 and August 2023 were retrospectively reviewed. All patients underwent MSCT, DR, and fat-suppression MRI for diagnostic evaluation. Arthroscopic or surgical findings served as the gold standard. We analyzed and compared the detection rates of specific types of occult knee injuries (ligament, meniscus, occult fracture, etc.) across the three modalities, as well as their ability to assess the degree of collapse and horizontal displacement in patients with knee fractures, and their overall diagnostic performance. Result According to the gold standard, among the 150 patients with suspected occult knee injury, 103 tested positive and 47 negative. Statistically significant differences were observed among MSCT, DR, and fat-suppression MRI in detecting occult fractures(P<0.05). The detection rates ranked in descending order asfollows: fat-suppression MRI>MSCT>DR. However, no significant difference were found in the detection rates of joint effusion and patellar cartilage injuries among the three techniques (P>0.05). Statistically differences were also note among the three techniques in detecting the degree of collapse and horizontal displacement in patients with knee fractures (P<0.05). Specifically fat-suppression MRI identified a higher proportion of grade 1 and 2 lesions than both MSCT and DR. Statistically significant differences were observed among the three techniques in diagnostic sensitivity and accuracy for occult knee injuries (P<0.05). Fat-suppression MRI demonstrated superior sensitivity (99.03%) and accuracy (96.67%) compared with MSCT (75.73%, 79.33%) and DR (61.17%, 68.00%). However, no significant difference was found in diagnostic specificity among the three techniques (P>0.05). Conclusion Compared with MSCT and DR, fat-suppression MRI offers higher diagnostic sensitivity and accuracy for occult knee injuries, particularly in identifying ligament injuries, meniscus injuries, and occult fractures.
