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Abstract #4559

Is ADC Measurement of Parotid Gland Tumor Sufficient using the Largest Slice rather than Whole Tumor

Shao-Chieh Lin1, Jui-Heng Lin1, Chun-Jung Juan2,3,4, Kai-Min Chien5, Teng-Yi Huang6, Yi-Jui Liu7, Chang Hsien Liu 5, Ya-Hui Li5, Szu Hsien Chou 5, and Chi-Feng Hsieh5
1Master 's Program of Biomedical Informatics and Biomedical Engineering, Feng Chia University, Taichung, Taiwan, 2Department of Medical Imaging, China Medical University Hsinchu Hospital, Hsinchu, Taiwan, 3Department of Radiology, School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan, 4Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan, 5Department of Medical Imaging, Chinese Medical University Hsinchu Hospital, Hsinchu, Taiwan, 6Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, 7Department of Automatic Control Engineering, Feng Chia University, Taichung, Taiwan

The study is to quantitatively compare the diagnostic ability of ADC in distinguishing three types of parotid tumor between the ADC measurement on slice with the largest tumor and whole tumor. This retrospective study enrolled 13 patient for each PMAs, WTs and MTs. All participants underwent 1.5-T fat-saturated EP-DWI. Our results show that ADC and AUC on largest slice and whole tumor were similar in three tumors. ADC of the slice with the largest tumor, which tumor size over 1/3 whole tumor volume, could instead the ADC of whole tumor to diagnosis the PMA, WT and MT in parotid gland.

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