Department of Radiology, People's Hospital of Deyang City, 173 Taishan North Road, Jingyang District, Deyang City, Sichuan Province, China.
Department of Radiology, Jilin University Second Hospital, 218 Ziqiang Street, Nanguan District, Changchun City, Jilin Province, China.
Int Orthop. 2020 Jun;44(6):1115-1121. doi: 10.1007/s00264-020-04564-3. Epub 2020 Apr 15.
The purpose of this study was to use the steady-state (SS) magnetic resonance angiography (MRA) with a sub-millimeter resolution to detect the arteries supplying to the femoral head (FH).
SS MRA scanning of hips was performed bilaterally in 15 healthy volunteers. A blood pool contrast agent was used. The scanning protocol included a 0.8-mm isotropic T1-fast field echo sequence with spectral fat suppression technique. Two highly qualified radiologists independently evaluated the medial circumflex femoral artery (MCFA), the lateral circumflex femoral artery (LCFA), and the three retinacular arteries including superior retinacular artery (SRA), inferior retinacular artery (IRA), and anterior retinacular artery (ARA). The intraosseous branches of the three retinacular arteries were also evaluated. An orthopaedic surgeon was consulted in case of disagreement. Observation by the two radiologists and support from the orthopaedic surgeon served as the end result. Agreement between the two observer radiologists was evaluated.
Interobserver agreement between the two radiologists was found to be substantial to perfect. Of the 30 hips, the LCFA and MCFA were detected in all hips; the SRA and IRA were detected in most hips (100%, 90%), and the ARA was detected in 13 hips (43%). The intraosseous branches of SRA and IRA were detected in 30 and 22 hips (100%, 73%), respectively, while the intraosseous branches of ARA were detected in 11 hips (37%).
The main arteries supplying the FH can be detected by the SS MRA, making it a novel method to detect the vascularity of FH.
本研究旨在使用亚毫米分辨率的稳态（SS）磁共振血管造影（MRA）来检测供应股骨头（FH）的动脉。
对 15 名健康志愿者的双侧髋关节进行 SS MRA 扫描。使用血池对比剂。扫描方案包括 0.8 毫米各向同性 T1 快速场回波序列和光谱脂肪抑制技术。两名高资质的放射科医生独立评估旋股内侧动脉（MCFA）、旋股外侧动脉（LCFA）和三条关节囊动脉，包括上关节囊动脉（SRA）、下关节囊动脉（IRA）和前关节囊动脉（ARA）。还评估了三条关节囊动脉的骨内分支。如有分歧，咨询骨科医生。两位放射科医生的观察结果和骨科医生的支持作为最终结果。评估了两位观察者放射科医生之间的一致性。
两位放射科医生之间的观察者间一致性被发现是实质性的到完美的。在 30 个髋关节中，LCFA 和 MCFA 在所有髋关节中均被检测到；SRA 和 IRA 在大多数髋关节中（100%，90%）被检测到，而 ARA 在 13 个髋关节中（43%）被检测到。SRA 和 IRA 的骨内分支在 30 个和 22 个髋关节中（100%，73%）被检测到，而 ARA 的骨内分支在 11 个髋关节中（37%）被检测到。
SS MRA 可检测供应 FH 的主要动脉，这是一种检测 FH 血管生成的新方法。
