Identifying the Adamkiewicz artery using 3-T time-resolved magnetic resonance angiography: its role in addition to multidetector computed tomography angiography
Identifying the Adamkiewicz artery using 3-T time-resolved magnetic resonance angiography: its role in addition to multidetector computed tomography angiography
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DOI：
10.1007/s11604-015-0490-6
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发表时间：
2015-12-01
影响因子：
2.1
通讯作者：
Takase, Kei
中科院分区：
文献类型：
--
作者：
Takagi, Hidenobu;Ota, Hideki;Takase, Kei
本研究使用多排计算机断层扫描血管造影 (MDCTA) 和时间分辨磁共振血管造影 (MRA) 在 3 T 下评估 Adamkiewicz 动脉 (AKA) 的可检测性。这项机构审查委员会批准的回顾性研究纳入了 117 名计划进行主动脉修复的胸腹主动脉疾病患者。共有111名患者接受MDCTA进行AKA鉴定； 43 名 MDCTA 未确定 AKA 的患者接受了额外的 MRA。其余 6 名患者不适合进行碘造影 MDCTA，仅接受了 MRA。两名评审员独立评估了 MDCTA 和 MRA 数据。使用4点置信度指数。 3-4 级被认为足以进行 AKA 诊断。MDCTA 的 AKA 可检出率为 80.2 % (89/111)，MRA 的 AKA 可检出率为 89.8 % (44/49)。在同时接受 MDTCA 和 MRA 的 43 名患者中，使用 MRA 与 MDCTA 相比，AKA 可检测性和共识等级显着提高（可检测性：分别为 88.4% 和 69.8%，p = 0.043）。主动脉瘤患者的 AKA 可检出率也高于 MDCTA 上的主动脉夹层患者（分别为 90.9% 与 69.6%，p < 0.01），但 MRA 上则不然（分别为 92.9% 与 88.6%，p = 0.99）。3 T 时的时间分辨 MRA 增加了 AKA 可检出率，建议用于 MDCTA 上未明确 AKA 识别的患者。
This study assessed Adamkiewicz artery (AKA) detectability using multidetector computed tomography angiography (MDCTA) and time-resolved magnetic resonance angiography (MRA) at 3 T.This Institutional Review Board-approved retrospective study included 117 patients with thoracoabdominal aortic disease scheduled for aortic repair. A total of 111 patients underwent MDCTA for AKA identification; 43 patients whose AKA identification was not definitive on MDCTA underwent additional MRA. The remaining six patients, who were not indicated for iodine-contrast MDCTA, underwent only MRA. Two reviewers independently evaluated both MDCTA and MRA data. The 4-point confidence index was used. Grades 3-4 were considered sufficient for AKA diagnosis.AKA detectability was at 80.2 % (89/111) using MDCTA and 89.8 % (44/49) with MRA. In the 43 patients who underwent both MDTCA and MRA, the AKA detectability and consensus grades were significantly elevated using MRA vs. MDCTA (detectability: 88.4 vs. 69.8 %, respectively, p = 0.043). AKA detectability was also higher in aortic aneurysm than aortic dissection patients on MDCTA (90.9 vs. 69.6 %, respectively, p < 0.01), but not on MRA (92.9 vs. 88.6 %, respectively, p = 0.99).Time-resolved MRA at 3 T increases AKA detectability and is recommended for patients without definitive AKA identification on MDCTA.