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Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality?

Publication ,  Journal Article
Ho, LM; Merkle, EM; Paulson, EK; Dale, BM
Published in: J Comput Assist Tomogr
2007

PURPOSE: To evaluate whether hepatic magnetic resonance angiography (MRA) performed at 3 T and acquired with a parallel imaging acceleration factor of 2 provides satisfactory image quality and adequate contrast-to-noise, compared with an acquisition without parallel imaging. MATERIALS AND METHODS: Ten volunteers underwent both a standard (A) and an experimental (B) MRA protocol. Both protocols used a gadoteridol dose of 20 mL injected at 2 mL/s in a 3-T magnetic resonance (MR) system. Protocol B was identical to protocol A, except protocol B was performed with a parallel imaging acceleration factor of 2. Contrast-to-noise ratios (CNRs) were calculated in the suprarenal abdominal aorta, the common hepatic artery, and the right and left hepatic arteries. The same 4 vessels were rated for quality of arterial visualization using a 5-point scale (1 = poor to 5 = excellent). The paired t test and Wilcoxon rank sum test were used for statistical analysis. RESULTS: The CNRs and qualitative scores were higher in all 4 vessels using protocol B. Mean CNRs in the suprarenal abdominal aorta, common hepatic artery, and the right and left hepatic arteries were 31, 33, 28, and 22 for protocol A and 36, 40, 36, and 25 for protocol B, respectively (P < 0.05 except the left hepatic arteries [P = 0.35]). Mean qualitative scores of the same vessels were 4.3, 3.7, 3.1, and 2.9 using protocol A and 4.4, 3.8, 3.5, and 3.2 for protocol B, respectively (P > 0.44). CONCLUSIONS: Parallel imaging performed in a 3-T MR system improves hepatic MRA both quantitatively and qualitatively.

Duke Scholars

Published In

J Comput Assist Tomogr

DOI

ISSN

0363-8715

Publication Date

2007

Volume

31

Issue

2

Start / End Page

177 / 180

Location

United States

Related Subject Headings

  • Time Factors
  • Reference Values
  • Prospective Studies
  • Organometallic Compounds
  • Nuclear Medicine & Medical Imaging
  • Male
  • Magnetics
  • Magnetic Resonance Angiography
  • Image Processing, Computer-Assisted
  • Image Enhancement
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Ho, L. M., Merkle, E. M., Paulson, E. K., & Dale, B. M. (2007). Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality? J Comput Assist Tomogr, 31(2), 177–180. https://doi.org/10.1097/01.rct.0000243441.72620.ce
Ho, Lisa M., Elmar M. Merkle, Erik K. Paulson, and Brian M. Dale. “Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality?J Comput Assist Tomogr 31, no. 2 (2007): 177–80. https://doi.org/10.1097/01.rct.0000243441.72620.ce.
Ho LM, Merkle EM, Paulson EK, Dale BM. Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality? J Comput Assist Tomogr. 2007;31(2):177–80.
Ho, Lisa M., et al. “Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality?J Comput Assist Tomogr, vol. 31, no. 2, 2007, pp. 177–80. Pubmed, doi:10.1097/01.rct.0000243441.72620.ce.
Ho LM, Merkle EM, Paulson EK, Dale BM. Contrast-enhanced hepatic magnetic resonance angiography at 3 T: does parallel imaging improve image quality? J Comput Assist Tomogr. 2007;31(2):177–180.

Published In

J Comput Assist Tomogr

DOI

ISSN

0363-8715

Publication Date

2007

Volume

31

Issue

2

Start / End Page

177 / 180

Location

United States

Related Subject Headings

  • Time Factors
  • Reference Values
  • Prospective Studies
  • Organometallic Compounds
  • Nuclear Medicine & Medical Imaging
  • Male
  • Magnetics
  • Magnetic Resonance Angiography
  • Image Processing, Computer-Assisted
  • Image Enhancement