Development of an innovative SPECT system without the rotational data acquisition
| Jazyk: | japonština |
|---|---|
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | 科学研究費助成事業 研究成果報告書. :1-5 |
| Popis: | 研究成果の概要 (和文) : 患者の周囲に配置した３台のガンマカメラと複数のピンホールコリメータを用いて、ガンマカメラを回転させることなく完全に静止した状態でデータの収集を行うシングルフォトンエミッションCT（SPECT）装置を考案し、この装置の性能を検証した。本研究では、マルチピンホールSPECTシステムのデータ収集上のさまざまなパラメータと再構成画像の画質との関係を明確にし、脳および心筋機能の映像化を実施するとともに、PET同様の動態機能解析の可能性を検討した。 研究成果の概要 (英文) : A new single photons emission computed tomography(SPECT) apparatus was proposed in this study. This apparatus acquires gamma-ray data with three multi-pinhole collimators attached to a triple head gamma camera system without any rotational movement of gamma cameras around a patient. In this study, the performance of the proposed system was evaluated with simulations and experiments, and the relationship between the quality of reconstructed images and the parameters in the multi-pinhole collimator including the number of holes and the diameter of holes were clarified. In addition, brain and myocardial images reconstructed with this system were evaluated with numerical phantoms and experimental phantoms. And the availability of kinetic function analysis of an organ was also evaluated in this study. |
| Databáze: | OpenAIRE |
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