Abdominal MR imaging at 3.0 T1

M. Akisik, Kumar Sandrasegaran, Alex M. Aisen, Chen Lin, Chandana Lall

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Magnetic resonance (MR) imaging at 3.0 T offers an improved signal-to-noise ratio compared with that at 1.5 T. However, the physics of high field strength also brings disadvantages, such as increases in the specific absorption rate, in magnetic field inhomogeneity effects, and in susceptibility artifacts. The use of 3.0-T MR imaging for abdominal evaluations, in particular, has lagged behind that for other applications because of the difficulty of imaging a large volume while compensating for respiratory motion. At a minimum, abdominal MR imaging at 3.0 T requires modifications in the pulse sequences used at 1.5 T. Such modifications may include a decrease in the flip angle used for refocusing pulses and an increase in the repetition time for T1-weighted acquisitions. In addition, parallel imaging and other techniques (hyper-echo sequences, transition between pseudo steady states) may be used to maintain a high signal-to-noise ratio while decreasing acquisition time and minimizing the occurrence of artifacts on abdominal MR images.

Original languageEnglish
Pages (from-to)1433-1444
Number of pages12
JournalRadiographics
Volume27
Issue number5
DOIs
StatePublished - Sep 2007

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Magnetic Resonance Imaging
Signal-To-Noise Ratio
Artifacts
Physics
Magnetic Fields
Magnetic Resonance Spectroscopy

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Abdominal MR imaging at 3.0 T1. / Akisik, M.; Sandrasegaran, Kumar; Aisen, Alex M.; Lin, Chen; Lall, Chandana.

In: Radiographics, Vol. 27, No. 5, 09.2007, p. 1433-1444.

Research output: Contribution to journalArticle

Akisik, M, Sandrasegaran, K, Aisen, AM, Lin, C & Lall, C 2007, 'Abdominal MR imaging at 3.0 T1', Radiographics, vol. 27, no. 5, pp. 1433-1444. https://doi.org/10.1148/rg.275075023
Akisik, M. ; Sandrasegaran, Kumar ; Aisen, Alex M. ; Lin, Chen ; Lall, Chandana. / Abdominal MR imaging at 3.0 T1. In: Radiographics. 2007 ; Vol. 27, No. 5. pp. 1433-1444.
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