The feasibility of spatial high-resolution magnetic resonance angiography (MRA) of the renal arteries at 3.0 T

Hendrik J. Michaely, Kambiz Nael, S. O. Schoertberg, J. P. Finn, G. Laub, M. F. Reiser, S. G. Ruehm

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Abstract

Purpose: To evaluate the feasibility of high-spatial resolution magnetic resonance angiography (MRA) of the renal arteries at 3.0 T. Material and Methods: Twelve healthy volunteers (mean age, 38.8 years) underwent renal MRA at 3.0 T. The application of parallel imaging with an acceleration factor of 3 allowed obtaining MR angiographic data with a voxel size of 0.9 × 0.8 × 0.9 mm in scan time of only 16 s. A dose of 0.2 mmol/kg body weight of 0.5-molar gadodiamide was administered at a flow rate of 2 ml/s. For image analysis, image quality, presence of artifacts, venous contamination and level of noise were rated by two radiologists in consensus. Results: All examinations were of diagnostic quality. The image quality was rated good or very good in 91 % (11/12) of cases. Due to the high parallel imaging factor the level of noise was slightly increased without diagnostic impairment. Mild venous enhancement was found in 75 % (9/12) of the examinations. Conclusion: Renal MRA at 3.0 T is feasible with high spatial resolution and a short acquisition time.

Original languageEnglish (US)
Pages (from-to)800-804
Number of pages5
JournalRoFo Fortschritte auf dem Gebiet der Rontgenstrahlen und der Bildgebenden Verfahren
Volume177
Issue number6
DOIs
Publication statusPublished - Jun 2005
Externally publishedYes

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Keywords

  • MR, high field strength imaging
  • MR, high resolution
  • MR, kidney
  • MR-angiography
  • Renal angiography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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