1. Features of time–intensity curve parameters of colorectal adenocarcinomas evaluated by double-contrast enhanced ultrasonography: Initial observation
- Author
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Zhuang, Hua, Yang, Zhi-gang, Wang, Zi-qiang, Wang, Xiao-dong, Chen, Hui-jiao, Zhang, Yuan-chuan, and Luo, Yan
- Subjects
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COLON cancer , *CONTRAST-enhanced ultrasound , *MICROCIRCULATION , *PERFUSION , *DIAGNOSTIC ultrasonic imaging , *MEDICAL statistics - Abstract
Abstract: Purpose: This study is to investigate the value of double contrast-enhanced ultrasonography (DCEU) in assessing microcirculation of colorectal adenocarcinomas and to describe the perfusion features of the tumours. Material and methods: DCEUS was performed in 42 patients with adenocarcinoma. The time–intensity curve parameters (arrival time (AT), time-to-peak (TTP), peak intensity (PI) and area under the curve (AUC)) within the tumours were extracted. The parameters were compared among the tumours with different CEUS features and stages. Results: The mean values of AT, TTP, PI and AUC of the colorectal adenocarcinomas were 13.68±13.36s, 32.61±19.56s, 19.82±16.54dB and 271.10±159.19dBs, respectively. In the adenocarcinomas with necrosis, the mean values of AUC was significantly lower than that of the adenocarcinomas without (231.10±219.27dBs, 278.10±123.20dBs, p =0.004). In the adenocarcinomas with necrosis, the AUC and PI of the non-necrotic part were significantly higher than that of the necrotic part (p =0.007, 0.0025, respectively). AUC increased progressively in the subgroups of T2, T3 and T4 and the difference of AUC between T2 and T4 subgroup was significant (p =0.008). Conclusions: Double contrast-enhanced ultrasonography is a valuable technique for quantifying tumour vascularity of colorectal adenocarcinomas. AUC was significantly different in the subgroups of different T stage. AUC and PI could reflect the different perfusion status of tumours with or without necrosis. [Copyright &y& Elsevier]
- Published
- 2012
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