Riffel P, Rao RK, Haneder S, Meyer M, Schoenberg SO, Michaely HJ. Impact of field strength and RF excitation on abdominal diffusion-weighted magnetic resonance imaging. World J Radiol 2013; 5(9): 334-344 [PMID: 24198912 DOI: 10.4329/wjr.v5.i9.334]
Corresponding Author of This Article
Dr. Raghuram K Rao, MD, the Russel H. Morgan Department of Radiology and Radiologic Science, the Johns Hopkins Hospital, Musculoskeletal Radiology, 601 N. Caroline Street, Baltimore, MD 21287, United States. rrao2@jhmi.edu
Research Domain of This Article
Radiology, Nuclear Medicine & Medical Imaging
Article-Type of This Article
Original Article
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World J Radiol. Sep 28, 2013; 5(9): 334-344 Published online Sep 28, 2013. doi: 10.4329/wjr.v5.i9.334
Impact of field strength and RF excitation on abdominal diffusion-weighted magnetic resonance imaging
Philipp Riffel, Raghuram K Rao, Stefan Haneder, Mathias Meyer, Stefan O Schoenberg, Henrik J Michaely
Philipp Riffel, Raghuram K Rao, Stefan Haneder, Mathias Meyer, Stefan O Schoenberg, Henrik J Michaely, Department of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Medical Faculty Mannheim-Heidelberg University, D-68167 Mannheim, Germany
Raghuram K Rao, the Russel H. Morgan Department of Radiology and Radiologic Science, the Johns Hopkins Hospital, Baltimore, MD 21287, United States
Author contributions: Riffel P, Rao RK and Haneder S performed the majority of the experiments; Rao RK wrote a majority of the manuscript draft; Riffel P organized the data into tables and created figures; Meyer M performed most of the statistical analysis; Schoenberg SO and Michaely HJ oversaw the project from initiation to completion, and helped to edit multiple revisions of the manuscript.
Correspondence to: Dr. Raghuram K Rao, MD, the Russel H. Morgan Department of Radiology and Radiologic Science, the Johns Hopkins Hospital, Musculoskeletal Radiology, 601 N. Caroline Street, Baltimore, MD 21287, United States. rrao2@jhmi.edu
Telephone: +1-443-2876032 Fax: +1-410-2876403
Received: April 30, 2013 Revised: July 17, 2013 Accepted: August 4, 2013 Published online: September 28, 2013
Core Tip
Core tip: With the popularity of 3.0T imaging systems, radiologists have commonly found limitations in abdominal imaging with diffusion-weighted imaging (DWI) secondary to B1 in homogeneity artifacts at these higher magnet strengths. Because artifacts disturb diagnostic value of abdominal DWI, 1.5T systems have been mainly used for this particular purpose. However, newer techniques involving 3.0T using dual-source parallel radiofrequency (RF) excitation with parallel transmission and independent RF shimming have recently been developed which may succeed in addressing such limitations. Our study illustrates both the objective and subjective utility in the abdominal distribution while imaging under a 3.0T system which incorporates dual-source RF excitation.
