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• Clinical Article •
Comparison of the image quality between liver DWI with and without LIPO
LIU Ying  SHI Yu  YU Bing  SHI Kai-Ning  SHANG Jin  GUO Qi-Yong 

DOI:10.12015/issn.1674-8034.2016.06.008.


[Abstract] Objective: To explore the difference of image quality with and without LIPO in diffusion weighted imaging(DWI).Materials and Methods: Collect 34 healthy volunteers from January 2015 to April 2016, China Medical University affiliated Shengjing Hospital, they were involved in the study, conducting DWI (b=800 s/mm2) with and without LIPO at the 3.0 T MR scanner. The signal to noise ratio(SNR) and apparent diffusion coefficient (ADC) of the two different sequences are measured by two observers at the different part of the liver. Scores of fat artifact (SFA) is evaluated at the same time. Compare the SNR and SFA of DWI-LIPO and conventional DWI sequences to evaluate the image quality.Results: SNR/ADC values of the same sequence and the same part of normal liver have no statistical differences (Z≥-0.453, P≥0.651; t≥-1.366, P≥0.191). DWI-LIPO sequence is statistically higher SNR than conventional DWI sequence of different parts of the liver (-4.590≤ Z≤-3.291, P≤0.001). SFA of DWI-LIPO sequence at the top and the right corner of the liver is lower than the conventional DWI sequence (P=0.001, 0.039). ADC values of the two sequences have no statistical difference.Conclusion: Applying LIPO technology, DWI sequence can increase the expression of fat artifact and improve the image quality of liver, without affecting the ADC values.
[Keywords] Magnetic resonance image；LIPO；Liver；Diffusion weighted imaging

LIU Ying Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China

SHI Yu Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China

YU Bing Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China

SHI Kai-Ning Imaging Systems Clinical Science Philips Healthcare, Beijing 100176, China

SHANG Jin Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China

GUO Qi-Yong* Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China

*Correspondence to: Guo QY, E-mail: guoqy@sj-hospital.org

Conflicts of interest   None.

ACKNOWLEDGMENTS  This work was part of National Natural Science Foundation of China No. 81271566, 81401376, 81471718
Received  2016-01-31
Accepted  2016-04-13
DOI: 10.12015/issn.1674-8034.2016.06.008
DOI:10.12015/issn.1674-8034.2016.06.008.

[1]
邓乾华，阮继银，江锦赵. 磁共振扩散加权成像在家兔肝纤维化分期的诊断价值. 磁共振成像, 2015, 6(6): 467-470.
[2]
周婷婷，王建良，杨毅. 常规MRI、DWI和动态增强扫描在肝脏局灶性病变诊断中的应用. 磁共振成像, 2015, 6(1): 33-39.
[3]
Nagy Z, Weiskopf N. Efficient fat suppression by slice-selection gradient. Magn Reson Imaging, 2008, 60(5): 1256-1260.
[4]
Lee JS, Kim YK, Jeong WK. Diffusion-weighted imaging of the liver at 3 T using section-selection gradient reversal: emphasis on chemical shift artefacts and lesion conspicuity. Clin Radiol, 2015, 70(4): 408-415.
[5]
Satkunasingham J, Besa C, Bane O. Liver fat quantification: Comparison of dual-echo and triple-echo chemical shift MRI to MR spectroscopy. Eur J Radiol, 2015, 84(8): 1452-1458.
[6]
Johst S, Orzada S, Fischer A. Comparison of fat saturation techniques for single-shot fast spin echo sequences for 7-T body imaging. Invest Radiol, 2014, 49(2): 101-108.
[7]
Ivanov D, Schäfer A, Streicher MN. A simple low-SAR technique for chemical-shift selection with high-field spin-echo imaging. Magn Reson Imaging, 2010, 64(2): 319-326.
[8]
Zech CJ, Herrmann KA, Dietrich O. Black-blood diffusion-weighted EPI acquisition of the liver with parallel imaging: comparison with a standard T2-weighted sequence for detection of focal liver lesions. Invest Radiology, 2008, 43(4): 261-266.
[9]
Koh DM, Blackledge M, Burns S. Combination of chemical suppression techniques for dual suppression of fat and silicone at diffusion-weighted MR imaging in women with breast implants. Eur Radiol, 2012, 22(12): 2648-2653.
[10]
Hernando D, Cook RJ, Diamond C. Magnetic susceptibility as a B0 field strength independent MRI biomarker of liver iron overload. Magn Reson Imaging, 2013, 70(3): 648-656.
[11]
Ouyang HQ, Gong ZJ, Zha YF. Splenic siderotic nodules in patients with liver cirrhosis. Exp Ther Med, 2013, 6(2): 445-450.
[12]
Pang Y, Wu B, Wang C. Numerical Analysis of Human Sample Effect on RF Penetration and LiverMR Imaging at Ultrahigh Field. Concepts Magn Reson Part B Magn Reson Eng, 2011, 39B(4): 206-216.
[13]
Raducan A, Cantemir AR, Puiu M. Kinetics of hydrogen peroxide decomposition by catalase: hydroxylic solvent effects. Bioprocess Biosyst Eng, 2012, 35(9): 1523-1530.

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