Whole-Heart-MR-Koronarangiographie - erste Ergebnisse

Özgün, Murat; Hoffmeier, A.; Quante, Markus; Fischbach, Roman; Heindel, Walter; Botnar, Rene; Maintz, David

doi:10.1055/s-2006-926650

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…This observation of improved sharpness with targeted-volume acquisition is consistent with findings in preliminary reports of evaluations of the whole-heart approach at 1.5 T [11, 12]. Although the whole-heart approach is easy to perform, the targeted-volume approach may be advantageous in terms of image quality.…”

Section: Discussionsupporting

confidence: 89%

“…Initial data acquired with whole-heart coronary MRA at 1.5 T have consistently shown significant improvement in visible coronary artery length, higher SNR, and easier setup in comparison with the conventional targeted-volume approach [8–12]. Some investigators [11, 12], however, have observed a reduction in image quality with the whole-heart approach, reporting a significant degradation in image sharpness, possibly due to the long duration of whole-heart acquisition.…”

Section: Introductionmentioning

confidence: 99%

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3-T Navigator Parallel-Imaging Coronary MR Angiography: Targeted-Volume Versus Whole-Heart Acquisition

Shixin¹,

Cham²,

Hu³

et al. 2008

American Journal of Roentgenology

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Objective The purpose of this study was to compare whole-heart acquisition with targeted-volume acquisition in 3-T navigator coronary MR angiography with parallel imaging. Subjects and Methods The right and left coronary arteries of 20 subjects were imaged with axial wholeheart acquisition and two oblique targeted-volume acquisitions. Results Both whole-heart and targeted-volume acquisitions were completed with similar navigator efficiencies (≈ 50%) and depicted similar coronary artery diameters (≈ 3 mm) (p ≥ 0.06). The lengths of the coronary arteries were not significantly different (p = 0.07–0.45) for the whole-heart and targeted-volume approaches. Depiction of the sharper coronary arteries (p 0.04) and overall image quality (p ≤ 0.02) were better with the targeted-volume approach. Conclusions For current 3-T navigator parallel-imaging coronary MR angiography, targeted-volume acquisition yields sharper coronary images than does whole-heart acquisition.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

3-T Navigator Parallel-Imaging Coronary MR Angiography: Targeted-Volume Versus Whole-Heart Acquisition

Shixin¹,

Cham²,

Hu³

et al. 2008

American Journal of Roentgenology

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Angeborene Fehlbildungen der Aorta im Kindes- und Jugendalter

Eichhorn

Ley

2007

Radiologe

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Aortic abnormalities are common cardiovascular malformations accounting for 15-20% of all congenital heart disease. Ultrafast CT and MR imaging are noninvasive, accurate and robust techniques that can be used in the diagnosis of aortic malformations. While their sensitivity in detecting vascular abnormalities seems to be as good as that of conventional catheter angiocardiography, at over 90%, they are superior in the diagnosis of potentially life-threatening complications, such as tracheal, bronchial, or esophageal compression. It has been shown that more than 80% of small children with aortic abnormalities benefit directly from the use of noninvasive imaging: either cardiac catheterization is no longer necessary or radiation doses and periods of general anesthesia for interventional catheterization procedures can be much reduced. The most important congenital abnormalities of the aorta in children and adolescents are presented with reference to examples, and the value of CT and MR angiography is documented.

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