研究目的
To assess the additive value of 3T 3D-CISS imaging to conventional MRI for the evaluation of the abnormal vessels of spinal dural arteriovenous fistulae (SDAVF).
研究成果
The 3D CISS sequence is useful for evaluating the abnormal vessels of SDAVF and should be added to routine MR examinations in patients suspected of harboring SDAVF.
研究不足
1. The study evaluated only axial and sagittal planes with the SE images. 2. Although contrast-enhanced 3D gradient-echo sequences may be useful for the evaluation of spinal arteriovenous shunt lesions, they were not assessed in this study. 3. 3D CISS images couldn’t assess the intramedullary abnormalities related with SDAVF. 4. The study evaluated only the patients with SDAVF using conventional sequences and CISS images.
1：Experimental Design and Method Selection:
The study included 16 consecutive patients with SDAVF who underwent 3T MRI and DSA before treatment. Two neuroradiologists independently evaluated the presence of abnormal vessels on 3D CISS-, T2- and T1-weighted images, and contrast-enhanced T1WI using a 3-point grading system.
2：Sample Selection and Data Sources:
Patients were diagnosed with SDAVF on DSA at Kumamoto University Hospital.
3：List of Experimental Equipment and Materials:
All scans were acquired on a 3T MR unit (Magnetom Trio; Siemens, Erlangen, Germany) with a spinal matrix coil; DSA was performed preoperatively.
4：Experimental Procedures and Operational Workflow:
The study examined sagittal slabs on the 3D CISS sequences and conventional sagittal and axial 2D-T1WI, T2WI, and CET1WI.
5：Data Analysis Methods:
The κ coefficient was used to assess interobserver agreement, and the Friedman test and the Scheffe test were used to evaluate the grading differences of the four types of images.
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