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Abstract #1338

Apparent diffusion coefficient histogram analysis of adenoid cystic carcinoma: correlation with histopathology and the prediction of survival

TANG WEIQING1, SONG YANG2, YING YUAN1, and TAO XIAOFENG1
1Radiology, Shanghai Ninth People’s Hospital,Shanghai Jiao Tong University School of Medicine, Shanghai, China, 2MR Scientific Marketing, Siemens Healthcare. Shanghai, China, Shanghai, China

Synopsis

Keywords: Head & Neck/ENT, CancerThe aim of this retrospective study is to explore the value of histogram analysis of apparent diffusion coefficient (ADC) values for distinguishing different subtypes of adenoid cystic carcinoma (ACC) and prediction of survival. Receiver operating characteristic curve analysis was used to determine the best differentiating parameters. The ADC_10th percentile values achieved highest diagnostic efficacy with an AUC of 0.821. The multivariable Cox proportional hazards model found that radiomic signature and tumor stage were significant predictors in ACC patients. Histogram analysis of ADC values may be helpful for differentiating the subtypes of ACC, leading to improved targeted treatment and reduced morbidity.

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