Intracoronary Injection of Contrast Media Maps the Territory of the Coronary Artery. An MRI Technique for Assessing the Effects of Locally Delivered Angiogenic Therapies
(2008) In Academic Radiology 15(11). p.1354-1359- Abstract
Rationale and Objectives: The effects of locally delivered angiogenic factors or stem cells on the coronary artery perfusion territory are not well defined. Therefore, the aim of this study was to determine the ability of the selective injection of magnetic resonance contrast media (MR-CM) to map and quantify the territories of the major coronary arteries. Materials and Methods: Selective coronary catheterization (n = 16 pigs) was performed under x-ray and magnetic resonance imaging (MRI) fluoroscopy in an x-ray and magnetic resonance suite. Catheters were placed in the left anterior descending (LAD), circumflex, or right coronary artery. The coronary perfusion territories were mapped by the intracoronary injection of MR-CM using... (More)
Rationale and Objectives: The effects of locally delivered angiogenic factors or stem cells on the coronary artery perfusion territory are not well defined. Therefore, the aim of this study was to determine the ability of the selective injection of magnetic resonance contrast media (MR-CM) to map and quantify the territories of the major coronary arteries. Materials and Methods: Selective coronary catheterization (n = 16 pigs) was performed under x-ray and magnetic resonance imaging (MRI) fluoroscopy in an x-ray and magnetic resonance suite. Catheters were placed in the left anterior descending (LAD), circumflex, or right coronary artery. The coronary perfusion territories were mapped by the intracoronary injection of MR-CM using first-pass perfusion (FPP) and early contrast-enhanced (CE) MRI. Cine MRI was used to quantify left ventricular (LV) mass. In 12 animals, the LAD coronary artery was occluded by microspheres to create infarctions. Infarct size was measured on delayed enhanced (DE) MRI after the intravenous injection of MR-CM. Results: X-ray and magnetic resonance fluoroscopy were successfully used to catheterize the coronary arteries. The perfusion territories of the coronary arteries were defined as hyperenhanced regions on FPP and CE MRI. The LAD coronary artery territory was 33.7 ± 2.2% of LV mass on FPP MRI and 33.0 ± 2.3% on CE MRI (P = .63). Bland-Altman analysis showed close agreement between the two methods (0.7 ± 5.0%). DE MRI demonstrated the infarcted myocardium as hyperenhanced subregions of the perfusion territory (7.5 ± 1.2% of LV mass). Conclusions: Interventional cardiac x-ray and magnetic resonance fluoroscopy can be used to map and quantify the perfusion territory of each coronary artery. This experimental method can be used before and after the local delivery of angiogenic factors and stem cell therapy to determine their efficacy.
(Less)
- author
- Carlsson, Marcus LU and Saeed, Maythem
- publishing date
- 2008-11-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- cardiac MRI, coronary artery, Interventional MRI, local angiogenic therapy, myocardial infarction
- in
- Academic Radiology
- volume
- 15
- issue
- 11
- pages
- 6 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:55149125149
- pmid:18995187
- ISSN
- 1076-6332
- DOI
- 10.1016/j.acra.2008.09.002
- language
- English
- LU publication?
- no
- id
- c4e0ffa5-d326-49b9-9898-960c8083ebd7
- date added to LUP
- 2019-05-14 15:13:27
- date last changed
- 2024-05-28 10:20:39
@article{c4e0ffa5-d326-49b9-9898-960c8083ebd7,
abstract = {{<p>Rationale and Objectives: The effects of locally delivered angiogenic factors or stem cells on the coronary artery perfusion territory are not well defined. Therefore, the aim of this study was to determine the ability of the selective injection of magnetic resonance contrast media (MR-CM) to map and quantify the territories of the major coronary arteries. Materials and Methods: Selective coronary catheterization (n = 16 pigs) was performed under x-ray and magnetic resonance imaging (MRI) fluoroscopy in an x-ray and magnetic resonance suite. Catheters were placed in the left anterior descending (LAD), circumflex, or right coronary artery. The coronary perfusion territories were mapped by the intracoronary injection of MR-CM using first-pass perfusion (FPP) and early contrast-enhanced (CE) MRI. Cine MRI was used to quantify left ventricular (LV) mass. In 12 animals, the LAD coronary artery was occluded by microspheres to create infarctions. Infarct size was measured on delayed enhanced (DE) MRI after the intravenous injection of MR-CM. Results: X-ray and magnetic resonance fluoroscopy were successfully used to catheterize the coronary arteries. The perfusion territories of the coronary arteries were defined as hyperenhanced regions on FPP and CE MRI. The LAD coronary artery territory was 33.7 ± 2.2% of LV mass on FPP MRI and 33.0 ± 2.3% on CE MRI (P = .63). Bland-Altman analysis showed close agreement between the two methods (0.7 ± 5.0%). DE MRI demonstrated the infarcted myocardium as hyperenhanced subregions of the perfusion territory (7.5 ± 1.2% of LV mass). Conclusions: Interventional cardiac x-ray and magnetic resonance fluoroscopy can be used to map and quantify the perfusion territory of each coronary artery. This experimental method can be used before and after the local delivery of angiogenic factors and stem cell therapy to determine their efficacy.</p>}},
author = {{Carlsson, Marcus and Saeed, Maythem}},
issn = {{1076-6332}},
keywords = {{cardiac MRI; coronary artery; Interventional MRI; local angiogenic therapy; myocardial infarction}},
language = {{eng}},
month = {{11}},
number = {{11}},
pages = {{1354--1359}},
publisher = {{Elsevier}},
series = {{Academic Radiology}},
title = {{Intracoronary Injection of Contrast Media Maps the Territory of the Coronary Artery. An MRI Technique for Assessing the Effects of Locally Delivered Angiogenic Therapies}},
url = {{http://dx.doi.org/10.1016/j.acra.2008.09.002}},
doi = {{10.1016/j.acra.2008.09.002}},
volume = {{15}},
year = {{2008}},
}