ISSN 1004-4140
CN 11-3017/P
Volume 23 Issue 2
Apr.  2014
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HE Yun-fei, DU Li-yun, JIN Cang-zheng. The Value of Diffusion-weighted Imaging in Diagnosing the Metastatic Lymph Nodes of Rectal Carcinoma[J]. CT Theory and Applications, 2014, 23(2): 267-273.
Citation: HE Yun-fei, DU Li-yun, JIN Cang-zheng. The Value of Diffusion-weighted Imaging in Diagnosing the Metastatic Lymph Nodes of Rectal Carcinoma[J]. CT Theory and Applications, 2014, 23(2): 267-273.
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The Value of Diffusion-weighted Imaging in Diagnosing the Metastatic Lymph Nodes of Rectal Carcinoma

  • Department of radiology, Nanhai Hospital of Southern Medical University, Foshan 528200, China

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  • Received Date: November 10, 2013
  • Available Online: December 09, 2022
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  • Objective: To investigate the value of diffusion-weighted imaging in diagnosing the metastatic lymph nodes of rectal carcinoma. Methods: 62 cases with rectal carcinoma confirmed by pathology undertake MRI common sequence and DWI scanning, the apparent diffusion of coefficients(ADC) value of 225 lymph nodes were measured. Dive the lymph nodes to metastatic lymph nodes and benign lymph nodes by the pathology. The ADC of them were compared. Results: b = 800 s/mm2, the mean ADC value of metastatic lymph nodes and benign lymph nodes is(0.76 ± 0.15) × 10-3mm2/s and(1.16 ± 0.14) × 10-3mm2/s. There were significant differences between these ADC values(P ＜ 0.05). To distinguish metastatic lymph nodes and benign lymph with the threshold of ADC value is 1.0 × 10-3mm2/s, the sensitivity is 94.53%, specificity is 91.62%, and accuracy is 93.45%. Conclusion: DWI posses comparatively great value in diagnosing the metastatic lymph nodes of rectal carcinoma.
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