| Clinical application of single shot GRE-EPI as non-enhanced MRA (EPI-MRA) for aortic aneurysm and dissection. | |
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MedLine Citation:
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PMID: 10593294 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We investigated the usefulness of single shot gradient echo type echo planar imaging (GRE-EPI) as magnetic resonance angiography (MRA) for the diagnosis of aortic aneurysm and dissection. This technique can detect blood flow signals in several tenths of a milliseconds without the need for contrast medium, breath-holding, or electrocardiographic (ECG) gating. By scanning approximately 20 frames in the coronal plane, three-dimensional (3D) imaging can be achieved by maximum intensity projection (MIP) at different angles. Three radiologists evaluated the ability of this single shot GRE-EPI as non-enhanced MRA (EPI-MRA) to diagnose aortic aneurysm and dissection. The examined lesions consisted of three cases of thoracic aortic aneurysm, seven of abdominal aortic aneurysm and eight of aortic dissection with a total of 15 involved aorta. In all patients with aortic aneurysm, EPI enabled detection and diagnosis of the aneurysm. However, the size of the lesion and relationship with major branches were determined only in the abdominal aorta, and could not be determined precisely in thoracic lesions. Similar results were obtained for patients with aortic dissection. The technique visualized the intimal flap and enabled determination of the extent of dissection in the abdominal aorta. In the thoracic aorta, serious magnetic susceptibility artifacts caused image distortion, and as a result only the dissection could be detected and diagnosed. No entry site was detected at either the abdominal or thoracic aorta. These results suggest that EPI-MRA may have a clinical potential for screening patients with acute aortic disease who cannot undergo physical restraint for scanning. |
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Authors:
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T Nitatori; K Yokoyama; A Nakamura; H Haradome; J Hachiya |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Radiation medicine Volume: 17 ISSN: 0288-2043 ISO Abbreviation: Radiat Med Publication Date: 1999 Sep-Oct |
Date Detail:
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Created Date: 1999-12-22 Completed Date: 1999-12-22 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8412264 Medline TA: Radiat Med Country: JAPAN |
Other Details:
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Languages: eng Pagination: 393-7 Citation Subset: IM |
Affiliation:
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Department of Radiology, Kyorin University School of Medicine, Tokyo, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aneurysm, Dissecting / diagnosis* Aortic Aneurysm / diagnosis* Contrast Media Echo-Planar Imaging* / methods Female Humans Magnetic Resonance Angiography* / methods Male |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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