Investigation of the spatial resolution of PET imaging system measuring polarization-correlated Compton events
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917767208239104 |
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| author | Kožuljević, Ana Marija Bokulić, Tomislav Grošev, Darko Kuncic, Zdenka Parashari, Siddharth Pavelić, Luka Makek, Mihael |
| author_facet | Kožuljević, Ana Marija Bokulić, Tomislav Grošev, Darko Kuncic, Zdenka Parashari, Siddharth Pavelić, Luka Makek, Mihael |
| contents | Recent studies of positron emission tomography (PET) devices have shown that the detection of polarization-correlated annihilation quanta can potentially reduce the background and creation of false lines of response (LORs) leading to improved image quality. We developed a novel PET demonstrator system, capable of measuring correlated gamma photons with single-layer Compton polarimeters to explore the potential of the method. We tested the system using sources with clinically relevant activities at the University Hospital Centre Zagreb. Here we present, for the first time, the images of two Ge-68 line sources, reconstructed solely from the correlated annihilation events. The spatial resolution at two different diameters is determined and compared to the one obtained from events with photoelectric interaction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_01238 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Investigation of the spatial resolution of PET imaging system measuring polarization-correlated Compton events Kožuljević, Ana Marija Bokulić, Tomislav Grošev, Darko Kuncic, Zdenka Parashari, Siddharth Pavelić, Luka Makek, Mihael Instrumentation and Detectors Medical Physics Recent studies of positron emission tomography (PET) devices have shown that the detection of polarization-correlated annihilation quanta can potentially reduce the background and creation of false lines of response (LORs) leading to improved image quality. We developed a novel PET demonstrator system, capable of measuring correlated gamma photons with single-layer Compton polarimeters to explore the potential of the method. We tested the system using sources with clinically relevant activities at the University Hospital Centre Zagreb. Here we present, for the first time, the images of two Ge-68 line sources, reconstructed solely from the correlated annihilation events. The spatial resolution at two different diameters is determined and compared to the one obtained from events with photoelectric interaction. |
| title | Investigation of the spatial resolution of PET imaging system measuring polarization-correlated Compton events |
| topic | Instrumentation and Detectors Medical Physics |
| url | https://arxiv.org/abs/2409.01238 |