Development of gamma-photon/Cerenkov-light hybrid system for simultaneous imaging of I-131 radionuclide

Yamamoto, Seiichi; Suzuki, Muneyasu; Katô, Katsuhiko; Watabe, Tadashi; Ikeda, Hayato; Kanai, Yasukazu; Ogata, Yoshiro; Hatazawa, Jun

doi:10.1016/j.nima.2016.06.046

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The signals from the FP-PMT were fed to the data acquisition system for position calculation, image correction, to store the images, and for real-time display. We used the same data acquisition system as with our previously developed system [17]. The original matrix size of the measured image of the YAP(Ce) detector was 50 × 50 pixels.…”

Section: Developed Low-sensitivity High Resolution Yap(ce) Scintillat...mentioning

confidence: 99%

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an ¹⁹²Ir source during high-dose-rate brachytherapy

et al. 2020

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Measurement of the precise position of a high activity iridium-192 (192Ir) source during high-dose-rate (HDR) brachytherapy is desired to detect the mispositioning of the source and avoid incidents. Although real-time imaging of the source position using a high-energy gamma camera is a possible method for this purpose, electronics are saturated at small distances from the source because the 192Ir source activity is so high. To solve this problem, we developed a low-sensitivity high-resolution gamma camera. We used a 1-mm-thick cerium-doped yttrium aluminum perovskite (YA1O3: YAP(Ce)) scintillator plate to reduce sensitivity. The developed low-sensitivity gamma camera consists of this thin YAP(Ce) scintillator optically coupled to a flat panel photomultiplier tube (FP-PMT). It is encased in a 20-mm-thick tungsten shield with a 0.5-mm diameter pinhole collimator mounted on its head. The spatial resolution of the gamma camera at 100 mm from the 192Ir source was 3.3 mm FWHM and the sensitivity was 0.52 cps/MBq. The count rate of the camera was ∼180-k cps at 100 mm from the 212.4-GBq 192Ir source and real-time imaging of the 192Ir source was possible. With a 100-mm-thick water phantom positioned between the gamma camera and the 192Ir source, we decreased the count rate to half, but the 192Ir source images could be observed clearly. We conclude that the developed low-sensitivity high-resolution gamma camera system has the potential to be a new real-time imaging system for HDR brachytherapy.

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Section: Developed Low-sensitivity High Resolution Yap(ce) Scintillat...mentioning

confidence: 99%

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an ¹⁹²Ir source during high-dose-rate brachytherapy

et al. 2020

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Imaging of Ir-192 source using a high energy gamma camera for high-dose-rate brachytherapy

Yamamoto

Yogo

Noguchi

et al. 2019

Radiation Measurements

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Advancements in hybrid imaging techniques: Enhancing diagnostic accuracy with PET/MRI and PET/CT

Alanazi

2024

Int. J. of Health Sci.

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Background Hybrid imaging techniques, including PET/MRI and PET/CT, are transforming medical diagnostics by integrating metabolic data from Positron Emission Tomography (PET) with the detailed anatomical resolution provided by Magnetic Resonance Imaging (MRI) or Computed Tomography (CT). This integration improves diagnostic accuracy, especially in oncology, where accurate tumor localization and characterization are essential for effective treatment planning. PET/CT is commonly utilized; however, PET/MRI presents benefits including enhanced soft tissue contrast and decreased radiation exposure, rendering it especially beneficial for pediatric patients or individuals needing multiple scans. Challenges persist in standardization, accessibility, and addressing the inherent physical limitations associated with the integration of these distinct imaging modalities. Aim This review seeks to evaluate the current status of hybrid imaging, specifically PET/MRI and PET/CT, by analyzing their diagnostic efficacy, integration challenges, and prospective developments. The review analyzed the benefits and drawbacks of each technique, compared their clinical applications, and investigated emerging hybrid modalities. Methods A thorough literature review was performed, including studies and articles on the applications of PET/MRI and PET/CT in diverse disease areas. The review examined current studies on diagnostic accuracy, technical integration challenges, and prospective developments in hybrid imaging technology.

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Development of gamma-photon/Cerenkov-light hybrid system for simultaneous imaging of I-131 radionuclide

Cited by 3 publications

References 11 publications

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an ¹⁹²Ir source during high-dose-rate brachytherapy

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an ¹⁹²Ir source during high-dose-rate brachytherapy

Imaging of Ir-192 source using a high energy gamma camera for high-dose-rate brachytherapy

Advancements in hybrid imaging techniques: Enhancing diagnostic accuracy with PET/MRI and PET/CT

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Development of gamma-photon/Cerenkov-light hybrid system for simultaneous imaging of I-131 radionuclide

Cited by 3 publications

References 11 publications

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an 192Ir source during high-dose-rate brachytherapy

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an 192Ir source during high-dose-rate brachytherapy

Imaging of Ir-192 source using a high energy gamma camera for high-dose-rate brachytherapy

Advancements in hybrid imaging techniques: Enhancing diagnostic accuracy with PET/MRI and PET/CT

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Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an ¹⁹²Ir source during high-dose-rate brachytherapy

Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an ¹⁹²Ir source during high-dose-rate brachytherapy