MRI findings of gouty arthritis of knee joint

VernacularTitle:膝关节痛风性关节炎的MRI表现
Author: Weixing LIU ¹ ; Xiaowei KANG ; Yang ZHANG ; Yibin XI
Author Information

1. 西安市人民医院(西安市第四医院)影像中心,陕西西安 710000
Keywords: knee joint; gouty arthritis; magnetic resonance imaging; dual-energy CT
From: Chinese Journal of Medical Physics 2024;41(8):992-995
CountryChina
Language:Chinese
Abstract: Objective To explore MRI findings of gouty arthritis(GA)of knee joint.Methods A retrospective study was conducted on 14 patients with GA of knee joint diagnosed with dual-energy CT,and their MRI findings were analyzed.Results In 14 patients with GA of knee joint,dual-energy CT showed that uric acid crystals were mainly deposited in tendons,ligaments,synovium and articular cartilage,including 6 cases in quadriceps tendon,4 cases in patellar ligament,2 cases in anterior and posterior cruciate ligaments,and the remaining 2 cases mainly involved the synovium around the knee joint.MRI showed that the signals of the tophi were similar to those of muscles on T1WI,while the signals on PDWI was diversified,mainly ranging from heterogeneous isointensity to heterogeneous hyperintensity.Conclusion The location and MRI signal characteristics of knee GA patients are specific,and MRI is conducive to display gout crystallization and early manifestations.