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• MRI of Uterine Diseases •
Clinical value of reduced field-of-view diffusion-weighted imaging in cervical cancer
DENG Baodi  LI Zhen  HU Daoyu  WANG Yanchun  WU Sisi 

Cite this article as: Deng BD, Li Z, Hu DY, et al. Clinical value of reduced field-of-view diffusion-weighted imaging in cervical cancer. Chin J Magn Reson Imaging, 2020, 11(7): 487-492. DOI:10.12015/issn.1674-8034.2020.07.002.


[Abstract] Objective: To compare the clinical efficacy of reduced field-of-view (r-FOV) diffusion-weighted imaging (DWI) in cervical cancer with full field-of-view (f-FOV) DWI.Materials and Methods: The data of 252 patients who underwent gynecological pelvic magnetic resonance examination from June 2015 to January 2017 were retrospectively analyzed. Fifty patients who were both positive for medical examination and magnetic resonance examination were included in the cervical cancer group. Resonance examination of 40 patients with no abnormal cervical cervix and negative cervical scraping were included in the normal cervical group. Patients underwent conventional MRI, r-FOV DWI, and f-FOV DWI scans before surgery. Two imaging diagnostic physicians used double-blind methods to display anatomical details and magnetic sensitivity of the two groups of DWI images of 50 cases of cervical cancer. The subjective evaluation of shadow, geometric deformation, and overall diagnostic confidence were performed. The signal noise ratio (SNR) and carrier to noise ratio (CNR) of the two DWI images of the cervical cancer group were measured and calculated for objective evaluation, and the ADC values of the cervical cancer group and the normal group were analyzed and compared on r-FOV DWI.Results: The subjective scores and objective measurements of the two field DWI images of the cervical cancer group by the two diagnostic doctors were in good agreement (both ICC values> 0.7). The two subjective scores of anatomical details, magnetically sensitive artifacts, geometric deformation, and overall diagnostic confidence of the two DWI images are: r-FOV DWI group 2.82±0.85, 2.88±0.75, 2.86±0.78, 2.82±0.83; f-FOV DWI group 2.04±0.70, 1.96±0.61, 2.06±0.62, 2.16±0.71. The subjective scores of r-FOV DWI images were higher than those of f-FOV DWI, and the P-values of each score were P<0.05. The difference was statistically significant. There was no significant difference in the SNR and CNR between the two groups of DWI images. The ADC value of cervical cancer group measured by r-FOV DWI was lower than the normal group, and the difference between the two was significant.Conclusions: In cervical cancer DWI examination, r-FOV DWI can effectively reduce image distortion and artifacts to obtain higher image quality and better lesion display effect than conventional f-FOV DWI. The measurement of ADC value can be more effective Make a good distinction between cervical cancer and normal cervix.
[Keywords] magnetic resonance imaging；uterine cervical neoplasms；diffusion-weighted imaging；apparent diffusion coefficient；differential diagnosis

DENG Baodi Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province, Wuhan 430030, China

LI Zhen Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province, Wuhan 430030, China

HU Daoyu Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province, Wuhan 430030, China

WANG Yanchun Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province, Wuhan 430030, China

WU Sisi* Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province, Wuhan 430030, China

*Correspondence to: Wu SS, E-mail: 514868394@qq.com

Conflicts of interest   None.

ACKNOWLEDGMENTS  This work was supported by the National Natural Science Foundation of China No. 81771801
Received  2019-12-26
Accepted  2020-05-21
DOI: 10.12015/issn.1674-8034.2020.07.002
Cite this article as: Deng BD, Li Z, Hu DY, et al. Clinical value of reduced field-of-view diffusion-weighted imaging in cervical cancer. Chin J Magn Reson Imaging, 2020, 11(7): 487-492. DOI:10.12015/issn.1674-8034.2020.07.002.

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