The Effect of Left Subclavian Artery Coverage During Endovascular Repair of the Thoracic Aortic Aneurysm on Cerebral Hemodynamics: Two Cases of Flow Measurement by using 2D Phase Contrast Magnetic Resonance Imaging.
10.13104/jksmrm.2012.16.2.159
- Author:
Seung Hoon BAEK
1
;
Sung Won YOUN
;
Ho Kyun KIM
;
Oh Choon KWON
;
Sub LEE
;
Jongmin LEE
Author Information
1. Vascular and Aging Research Group, Catholic University of Daegu School of Medicine, Daegu, Korea. ysw10adest@cu.ac.kr
- Publication Type:Case Report
- Keywords:
Aortic aneurysm;
Thoracic endovascular aortic repair (TEVAR);
Left subclavian artery (LSA);
2D cine phase contrast MR imaging;
Subclavian steal
- MeSH:
Aortic Aneurysm;
Aortic Aneurysm, Thoracic;
Brain;
Carotid Arteries;
Hemodynamics;
Humans;
Magnetic Resonance Imaging;
Magnetic Resonance Spectroscopy;
Magnetics;
Magnets;
Prospective Studies;
Subclavian Artery;
Subclavian Steal Syndrome;
Triage;
Vertebral Artery
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2012;16(2):159-168
- CountryRepublic of Korea
- Language:English
-
Abstract:
The proximity of thoracic aortic aneurysm to the left subclavian artery (LSA) has made the coverage of LSA during thoracic endovascular aortic repair (TEVAR) be essential. Despite controversy concerning the safety of LSA coverage and the indications for LSA revascularizations, the cerebral hemodynamic change after LSA coverage has not been demonstrated. We prospectively examined two patients who would undergo TEVAR with LSA coverage by using 2D cine phase contrast MR imaging. After LSA coverage, the left subclavian steal was properly compensated by the increased flow volumes of both carotid arteries and right vertebral artery, which is the major collateral supply. The total brain supply after TEVAR did not lessen, which showed good correlation with uneventful clinical outcome. Therefore, 2D phase contrast MR imaging can be recommended as a useful technique to evaluate the hemodynamic change of the LSA coverage during TEVAR and to triage the candidate for LSA revascularization.
