| Autor: |
Zhihui Hao, Ping Guo, Xiaotao Wang, Qiang Wang, Youngkyoo Hwang, Jung-Bae Kim, Haibing Ren, Kuanhong Xu |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Medical Imaging: Image Processing |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.2042973 |
| Popis: |
This paper presents a learning based vessel detection and segmentation method in real-patient ultrasound (US) liver images. We aim at detecting multiple shaped vessels robustly and automatically, including vessels with weak and ambiguous boundaries. Firstly, vessel candidate regions are detected by a data-driven approach. Multi-channel vessel enhancement maps with complement performances are generated and aggregated under a Conditional Random Field (CRF) framework. Vessel candidates are obtained by thresholding the saliency map. Secondly, regional features are extracted and the probability of each region being a vessel is modeled by random forest regression. Finally, a fast levelset method is developed to refine vessel boundaries. Experiments have been carried out on an US liver dataset with 98 patients. The dataset contains both normal and abnormal liver images. The proposed method in this paper is compared with a traditional Hessian based method, and the average precision is promoted by 56 percents and 7.8 percents for vessel detection and classification, respectively. This improvement shows that our method is more robust to noise, therefore has a better performance than the Hessian based method for the detection of vessels with weak and ambiguous boundaries. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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