Agreement assessment in size measurement of hepatic metastases

Yangchen Zheng; Ibrahim Karademir; Leon Wise; Aytekin Oto; Yahui Peng

doi:10.1117/12.2265986

23 January 2017 Agreement assessment in size measurement of hepatic metastases

Yangchen Zheng, Ibrahim Karademir, Leon Wise, Aytekin Oto, Yahui Peng

Proceedings Volume 10322, Seventh International Conference on Electronics and Information Engineering; 103220A (2017) https://doi.org/10.1117/12.2265986
Event: Seventh International Conference on Electronics and Information Engineering, 2016, Nanjing, China

Abstract

The purpose of the study was to investigate patient-wise agreement among multiparametric magnetic resonance (MR) imaging sequences and radiologists, respectively, in the size assessment of hepatic metastases. A total of 30 liver metastases were identified from 20 patients and three radiologists independently measured the long and short axes for all metastases in T1-weighted, T2-weighted, diffusion-weighted imaging (DWI) with b of 0 and 800 s/mm², and the apparent diffusion coefficient (ADC) map. We calculated the patient-wise intraclass correlation coefficient (ICCs) to estimate the interobserver and intersequence agreement in measured lesion size. Interobserver ICCs were 0.92-0.98 for different MR sequences and intersequence ICCs were 0.93-0.98. In conclusion, multiparametric MR imaging is a reliable tool for hepatic metastatic lesion measurement.

Citation Download Citation

Yangchen Zheng, Ibrahim Karademir, Leon Wise, Aytekin Oto, and Yahui Peng "Agreement assessment in size measurement of hepatic metastases", Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 103220A (23 January 2017); https://doi.org/10.1117/12.2265986

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KEYWORDS

Magnetic resonance imaging

Liver

Diffusion

Diffusion weighted imaging

Medicine

Scanners

3D image processing

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