Optimization and Clinical Feasibility of Free-breathing Diffusion-weighted Imaging of the Liver: Comparison with Respiratory-Triggered Diffusion-weighted Imaging

Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine
Yukihisa TakayamaHiroshi Honda

Abstract

We compared the image quality of free-breathing diffusion-weighted imaging (FB-DWI) to that of respiratory-triggered DWI (RT-DWI) after proper optimization. Three healthy subjects were scanned to optimize magnetic resonance (MR) parameters of FB-DWI to improve image quality, including spatial resolution, image noise, and chemical shift artifacts. After this optimization, we scanned 32 patients with liver disease to assess the clinical feasibility of the optimized FB-DWI. Of the 32 patients, 14 had a total of 28 hepatocellular carcinomas (HCCs), four had a total of 15 metastatic liver tumors, and the other 14 had no tumor. Qualitatively, we compared the image quality scores of FB-DWI with those of RT-DWI with the Wilcoxon signed-rank test. Quantitatively, we compared the signal-to-noise ratios (SNRs) of the liver parenchyma, lesion-to-nonlesion contrast-to-noise ratios (CNRs) and apparent diffusion coefficient (ADC) values of the liver parenchyma and liver tumor by the paired t-test. The average scores of image quality for sharpness of liver contour, image noise, and chemical shift artifacts were significantly higher for FB-DWI than RT-DWI (P < 0.05). SNRs, CNRs, and ADC values of the liver parenchyma and tumors did not differ s...Continue Reading

References

Apr 9, 1999·Radiographics : a Review Publication of the Radiological Society of North America, Inc·E M DelfautA Cotten
May 16, 2001·Radiographics : a Review Publication of the Radiological Society of North America, Inc·M Poustchi-AminT Li
Aug 23, 2003·AJR. American Journal of Roentgenology·Ioana-Maria DanetMasayuki Kanematsu
Oct 27, 2005·Hepatology : Official Journal of the American Association for the Study of Liver Diseases·Jordi BruixUNKNOWN Practice Guidelines Committee, American Association for the Study of Liver Diseases
Dec 2, 2006·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Katsuhiro NasuShigeru Nawano
Mar 9, 2007·Nihon Hoshasen Gijutsu Gakkai zasshi·Isao MuroTomohiko Horie
Nov 21, 2007·Radiology·Johannes T Heverhagen
May 28, 2008·Journal of Magnetic Resonance Imaging : JMRI·Thomas C LauensteinDiego R Martin
Jun 27, 2008·Journal of Magnetic Resonance Imaging : JMRI·Bachir TaouliValérie Vilgrain
Mar 28, 2009·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Alvin C SilvaAmy K Hara
May 1, 2009·European Journal of Radiology·Thomas C KweePeter R Luijten
Mar 20, 2010·European Journal of Radiology·Olaf DietrichMaximilian F Reiser
Sep 23, 2010·AJR. American Journal of Roentgenology·Satoshi GoshimaNoriyuki Moriyama
Oct 6, 2012·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Masayuki KanematsuNoriyuki Moriyama
Nov 29, 2012·Journal of Magnetic Resonance Imaging : JMRI·Ji Soo ChoiKi Whang Kim

❮ Previous
Next ❯

Citations

Jan 8, 2016·Radiological Physics and Technology·Shigeyoshi SaitoTakashi Hashido
Dec 7, 2018·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Koji YamashitaHiroshi Honda
Mar 18, 2017·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Utaroh Motosugi

❮ Previous
Next ❯

Related Concepts

Related Feeds

Alzheimer's Disease: Neuroimaging

Neuroimaging can help identify pathological hallmarks of Alzheimer's disease (AD). Here is the latest research on neuroimaging modalities, including magnetic resonance imaging and positron emission tomography, in AD.