Guoyin Ren, Xiaoqi Lü, Nan Yang, Dahua Yu. Research and Realization of Local Cardiovascular Computed Tomography Extraction Algorithm in Lesion Assisted Diagnosis[J]. Laser & Optoelectronics Progress, 2018, 55(5): 051701
- Laser & Optoelectronics Progress
- Vol. 55, Issue 5, 051701 (2018)
Fig. 1. Flow chart of improved parallel region growing algorithm
Fig. 2. Composition of MEA
Fig. 3. Constraint effect of pixel edges. (a) Blood vessel seed point setting; (b) blood vessel segmentation before g value constraint; (c) blood vessel segmentation after g value constraint
Fig. 4. Flow chart of cardiac lesion vascular extraction and four-dimensional visualization
Fig. 5. Dynamic rendering results for four-dimensional CT of heart
Fig. 6. Extraction results of local cardiac lesion area. (a) Extraction of local three-dimensional tissue; (b) the area of interest drawn with mouse
Fig. 7. Results of local cardiac blood vessels (a) before and (b) after resampling
Fig. 8. Four-dimensional extraction results of blood vessels
Fig. 9. Time comparison of parallel region growing algorithm before and after improvement
Fig. 10. Robustness analysis of the system after disturbance
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Table 1. Four-dimensional display performance of heart and local vessels
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