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Japanese Journal of Radiology

Erschienen in:

01.12.2015 | Original Article

Identifying the Adamkiewicz artery using 3-T time-resolved magnetic resonance angiography: its role in addition to multidetector computed tomography angiography

verfasst von: Hidenobu Takagi, Hideki Ota, Yutaka Natsuaki, Yoshiaki Komori, Koki Ito, Yoshikatsu Saiki, Kei Takase

Erschienen in: Japanese Journal of Radiology | Ausgabe 12/2015

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Abstract

Purpose

This study assessed Adamkiewicz artery (AKA) detectability using multidetector computed tomography angiography (MDCTA) and time-resolved magnetic resonance angiography (MRA) at 3 T.

Materials and methods

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.

Results

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).

Conclusions

Time-resolved MRA at 3 T increases AKA detectability and is recommended for patients without definitive AKA identification on MDCTA.

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Titel: Identifying the Adamkiewicz artery using 3-T time-resolved magnetic resonance angiography: its role in addition to multidetector computed tomography angiography
verfasst von: Hidenobu Takagi
Hideki Ota
Yutaka Natsuaki
Yoshiaki Komori
Koki Ito
Yoshikatsu Saiki
Kei Takase
Publikationsdatum: 01.12.2015
Verlag: Springer Japan
Erschienen in: Japanese Journal of Radiology / Ausgabe 12/2015
Print ISSN: 1867-1071
Elektronische ISSN: 1867-108X
DOI: https://doi.org/10.1007/s11604-015-0490-6

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Identifying the Adamkiewicz artery using 3-T time-resolved magnetic resonance angiography: its role in addition to multidetector computed tomography angiography