Assessment of Vascular Supply of Hypervascular Extra-Axial Brain Tumors with 3T MR Regional Perfusion Imaging
Assessment of Vascular Supply of Hypervascular Extra-Axial Brain Tumors with 3T MR Regional Perfusion Imaging
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DOI：
10.3174/ajnr.a1847
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发表时间：
2010-03-01
影响因子：
3.5
通讯作者：
Yamashita, Y.
中科院分区：
文献类型：
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作者：
Sasao, A.;Hirai, T.;Yamashita, Y.
背景和目的：颈外动脉提供的轴外脑肿瘤的血管供应尚未用RPI研究。这项工作的目的是确定是否RPI评估是可行的，并提供信息的血管供应的多血管extra-axial脑tumors.MATERIALS和METHODS：常规ASL和RPI研究进行了连续8例脑膜瘤在3 T。在MRA结果的基础上，我们通过在颈外动脉上放置选择性标记板来进行RPI。5例患者术前均行DSA检查。两名神经放射科医生独立评价了传统ASL和RPI的整体图像质量、肿瘤灌注程度和肿瘤血管范围。结果：在传统ASL和RPI的整体质量中，没有图像干扰解释。传统ASL和RPI技术所显示的肿瘤血管区域比较，3例完全一致，4例部分不同，1例完全不同。观察者间一致性非常好（kappa = 0.82）。在5例接受DSA检查的患者中，4例以颈外动脉为主要供血动脉的患者被评分为符合或部分不同。1例患者的血管供应是从颈内动脉被评为完全different.CONCLUSIONS：RPI与选择性标记的颈外动脉是可行的，并可能提供信息的血管供应的富血供轴外脑肿瘤。
BACKGROUND AND PURPOSE: The vascular supply of extra-axial brain tumors provided by the external carotid artery has not been studied with RPI. The purpose of this work was to determine whether RPI assessment is feasible and provides information on the vascular supply of hypervascular extra-axial brain tumors.MATERIALS AND METHODS: Conventional ASL and RPI studies were performed at 3T in 8 consecutive patients with meningioma. On the basis of MRA results, we performed RPI by placing a selective labeling slab over the external carotid artery. Five patients underwent DSA before surgery. Two neuroradiologists independently evaluated the overall image quality, the degree of tumor perfusion, and the extent of the tumor vascular territory on conventional ASL and RPI.RESULTS: In overall quality of conventional ASL and RPI, no images interfered with interpretation. In comparisons of the vascular tumor territory identified by the conventional ASL and RPI techniques, the territories coincided in 3 cases, were partially different in 4, and completely different in 1. The interobserver agreement was very good (kappa = 0.82). In 5 patients who underwent DSA, the 4 patients in whom the dominant supply was the external carotid artery were scored as coincided or partially different. The 1 patient in whom the vascular supply was from the internal carotid artery was scored as completely different.CONCLUSIONS: RPI with selective labeling of the external carotid artery is feasible and may provide information about the vascular supply of hypervascular extra-axial brain tumors.