Limited Angle Tomography reconstruction for non-standard MBI system by means of parallel-hole and pinhole optics
| Autor: | G. E. Poma, Fabio Santavenere, G. Schrmann, T. Insero, A. Marcucci, Franco Garibaldi, Maurizio Lucentini, C. M. Sutera, E. Cisbani, Johan Nuyts, Fausto Giuliani, Paolo Musico |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
business.industry FOS: Physical sciences Probability and statistics Physics - Medical Physics law.invention Optics law Physics - Data Analysis Statistics and Probability Medical Physics (physics.med-ph) business Instrumentation Mathematical Physics Data Analysis Statistics and Probability (physics.data-an) Gamma camera Limited angle tomography |
| Popis: | The purpose of the present work is the study of reconstruction properties of a new Molecular Breast Imaging (MBI) device for the early diagnosis of breast cancer, in Limited Angle Tomography (LAT), by using two asymmetric detector heads with different collimators. The detectors face each other in anti-parallel viewing direction and, mild-compressing the breast phantom, they are able to reconstruct the inner tumour of the phantoms with only a limited number of projections using a dedicated maximum-likelihood expectation maximization (ML-EM) algorithm. Phantoms, MBI system, as well as Monte Carlo simulator using Geant 4 Application for Tomographic Emission (GATE) software, are briefly described. MBI system's model has been implemented in IDL (Interactive Data Visualization), in order to evaluate the best LAT configuration of the system and its reconstruction ability by varying tumour's size, depth and uptake. LAT setup in real and simulated configurations, as well as the ML-EM method and the preliminary reconstruction results, are discussed. 10 pages, 10 figures, proceeding conference |
| Databáze: | OpenAIRE |
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