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Clinical Article
The value of different diffusion models in the depth of myometrial invasion of stage I endometrial cancer
YIN Xi  WU Hui  GAO Yang  QIAO Pengfei  NIU Guangming 

Cite this article as: Yin X, Wu H, Gao Y, et al. The value of different diffusion models in the depth of myometrial invasion of stage I endometrial cancer. Chin J Magn Reson Imaging, 2019, 10(4): 258-262. DOI:10.12015/issn.1674-8034.2019.04.004.


[Abstract] Objective: To evaluate the value of monoexponential, biexponential, and stretched exponential diffusion-weighted imaging models in diagnosing the depth of myometrial invasion of stage Ⅰ endometrial cancer.Materials and Methods: 53 cases of stage Ⅰ endometrial cancer were collected, and conventional MRI and multi-b value DWI scan were performed. The apparent diffusion coefficient (ADC), true diffusion coefficient (D) and pseudo-diffusion coefficient (D*) were measured on the pseudo-color map of each parameter, perfusion fraction (f), distribution diffusion coefficient (DDC), water diffusion heterogeneity index (α) value. According to the pathological results after total hysterectomy, it was divided into stage Ⅰa and stage Ⅰb. Differences between the two groups were compared using two independent sample t-tests. The receiver operating characteristic (ROC) curve was plotted to evaluate the efficacy of each parameter in diagnosing the depth of myometrial invasion of stage Ⅰ endometrial cancer.Results: The values of D, f, DDC and ADC in Ⅰb phase were less than Ia, and the differences were statistically significant (P<0.05). The D* value in Ⅰb phase was greater than that in Ia, the difference was not statistically significant (P>0.05), Ⅰb phase the α value was less than stage Ⅰa, and the difference was not statistically significant (P>0.05). The area under the curve (AUC) of D, f, DDC, and ADC values for the diagnosis of myometrial invasion of stage Ⅰ endometrial cancer were 0.867, 0.762, 0.794, and 0.774, respectively.Conclusions: The monoexponential model can help to diagnose the depth of myometrial invasion of stage Ⅰ endometrial cancer. The biexponential, and stretched exponential models are superior to the monoexponential model.
[Keywords] magnetic resonance imaging;endometrial neoplasms;muscle infiltration depth;apparent diffusion coefficient

YIN Xi Department of Radiology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China

WU Hui Department of Radiology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China

GAO Yang Department of Radiology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China

QIAO Pengfei Department of Radiology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China

NIU Guangming* Department of Radiology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China

*Correspondence to: Niu GM, E-mail: Cjr.niuguangming@vip.163.com

Conflicts of interest   None.

Received  2018-10-29
Accepted  2019-03-06
DOI: 10.12015/issn.1674-8034.2019.04.004
Cite this article as: Yin X, Wu H, Gao Y, et al. The value of different diffusion models in the depth of myometrial invasion of stage I endometrial cancer. Chin J Magn Reson Imaging, 2019, 10(4): 258-262. DOI:10.12015/issn.1674-8034.2019.04.004.

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