E-ISSN: 1305-3612
Comparison of diffusion-weighted MRI acquisition techniques for normal pancreas at 3.0 Tesla
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Abdominal Imaging - Original Article
VOLUME: 20 ISSUE: 5
P: 368-373
September 2014

Comparison of diffusion-weighted MRI acquisition techniques for normal pancreas at 3.0 Tesla

Diagn Interv Radiol 2014;20(5):368-373
DOI: 10.5152/dir.2014.13454
Xiu-Zhong Yao, 1
Tiantao Kuang,
Li Wu,
Hao Feng,
Hao Liu,
Wei-Zhong Cheng,
Sheng-Xiang Rao,
He Wang,
Meng-Su Zeng
1. Department of Radiology, Zhongshan Hospital of Fudan University, Shanghai, China; Department of Medical Imaging, Shanghai Institute of Medical Imaging, Shanghai Medical College of Fudan University, Shanghai, China
2. Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
3. Global Applied Science Laboratory, GE Healthcare, Shanghai, China
No information available.
No information available
Received Date: 22.11.2013
Accepted Date: 24.02.2014
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ABSTRACT

PURPOSE

We aimed to optimize diffusion-weighted imaging (DWI) acquisitions for normal pancreas at 3.0 Tesla.

MATERIALS AND METHODS

Thirty healthy volunteers were examined using four DWI acquisition techniques with b values of 0 and 600 s/mm2 at 3.0 Tesla, including breath-hold DWI, respiratory-triggered DWI, respiratory-triggered DWI with inversion recovery (IR), and free-breathing DWI with IR. Artifacts, signal-to-noise ratio (SNR) and apparent diffusion coefficient (ADC) of normal pancreas were statistically evaluated among different DWI acquisitions.

RESULTS

Statistical differences were noticed in artifacts, SNR, and ADC values of normal pancreas among different DWI acquisitions by ANOVA (P < 0.001). Normal pancreas imaging had the lowest artifact in respiratory-triggered DWI with IR, the highest SNR in respiratory-triggered DWI, and the highest ADC value in free-breathing DWI with IR. The head, body, and tail of normal pancreas had statistically different ADC values on each DWI acquisition by ANOVA (P < 0.05).

CONCLUSION

The highest image quality for normal pancreas was obtained using respiratory-triggered DWI with IR. Normal pancreas displayed inhomogeneous ADC values along the head, body, and tail structures.