Single breath-hold pulmonary magnetic resonance angiography. Optimization and comparison of three imaging strategies.
Journal Article (Clinical Trial;Journal Article)
RATIONALE AND OBJECTIVES: Ultrafast gradient-recalled-echo techniques for obtaining high-quality pulmonary magnetic resonance angiograms within a single breath-hold were optimized. METHODS: Fourteen subjects were imaged with both the body coil and a phased-array surface coil, using three gradient-recalled-echo pulse sequences: 1) two-dimensional sequential; 2) two-dimensional interleaved; and 3) volumetric acquisitions. Image quality was assessed with varied flip angle, receiver bandwidth, slice thickness/number, and matrix size. Cardiac compensation diminished ghost artifacts in the interleaved sequence. Individual sagittal sections and maximum intensity projections were reviewed. RESULTS: Pulmonary magnetic resonance angiograms acquired with volumetric and two-dimensional interleaved gradient-recalled-echo pulse sequences benefit greatest from intravenous gadolinium and result in greater pulmonary arterial visualization than traditional time-of-flight techniques. Phased-array coils result in improved vessel detection. CONCLUSIONS: High-quality breath-held pulmonary magnetic resonance angiography can be obtained with an intravenous contrast-enhanced gradient-recalled-echo acquisition; however, image quality is dependent on the pulse sequence.
Full Text
Duke Authors
Cited Authors
- Rubin, GD; Herfkens, RJ; Pelc, NJ; Foo, TK; Napel, S; Shimakawa, A; Steiner, RM; Bergin, CJ
Published Date
- August 1994
Published In
Volume / Issue
- 29 / 8
Start / End Page
- 766 - 792
PubMed ID
- 7960627
International Standard Serial Number (ISSN)
- 0020-9996
Digital Object Identifier (DOI)
- 10.1097/00004424-199408000-00006
Language
- eng
Conference Location
- United States