Development of a voxel model of the heart for dosimetry
| Autor: | Keila R, Fonseca, Bruno M, Trindade, Tarcísio P R, Campos |
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| Rok vydání: | 2011 |
| Předmět: |
Radioisotopes
Samarium Angioplasty Brachytherapy Models Cardiovascular Coronary Artery Disease Coronary Angiography Prosthesis Design Radiation Dosage Radiotherapy Computer-Assisted Coronary Restenosis Imaging Three-Dimensional Humans Radiographic Image Interpretation Computer-Assisted Computer Simulation Stents Radiation Injuries Tomography X-Ray Computed Phosphorus Radioisotopes |
| Zdroj: | Artificial organs. 35(5) |
| ISSN: | 1525-1594 |
| Popis: | This article investigates the dosimetry of a radioactive stent and radioactive liquid balloon placed into the heart vasculature to prevent restenosis after atherosclerosis treatment. The research aims to know the dosages to establish a suitable activity which achieves restenosis control and thereafter minimize radiation effects in the cardiac muscle. In order to accomplish the dosimetric analysis, a heart voxel model was assembled based on tomographic images. The computational model consists of a three-dimensional matrix taken from 60 tomographic images representing the major heart tissues. A radioactive ¹⁵³Sm liquid balloon is simulated as well as a ³²P radioactive stent, inserted in an arbitrary heart artery. After simulation processing, the absorbed dose rate was evaluated in the heart musculature. The models are presented in two- and three-dimensional previews and the dosage profiles are shown by isodose curves superimposed onto the heart model. |
| Databáze: | OpenAIRE |
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