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Demirtaş CK, Can M, Karadeniz Ö, Çilengiroğlu ÖV, Ertay T, Kaya GÇ. Energy window optimization in bremsstrahlung imaging after Yttrium-90 microsphere therapy. Biomed Phys Eng Express 2024; 10:025028. [PMID: 38306962 DOI: 10.1088/2057-1976/ad25ba] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
In imaging of Yttrium-90 patients treated hepatic primary and metastatic cancers, bremsstrahlung photons produced in a wide energy range is used. However, the image quality depends on acquisition energy window. This research aimed energy window optimization for Yttrium-90 bremsstrahlung imaging and 48 patients with various types of cancer received radioembolization therapy were investigated. Patients were imaged using a GE Healthcare Optima NM/CT 640 series gamma camera system with a medium energy general-purpose (MEGP) collimator and planar images were acquired with 8 different energy windows in the 55-400 keV energy range. The data set, formed with the % FOV, contrast, and spatial resolution of image quality parameters calculated from these images, was statistically examined with ANOVA and Tukey tests. According to the visual evaluations and ANOVA/Tukey test results, it was statistically concluded that energy window of 90-110 keV is the optimal energy window while 60-400 keV energy ranges show the lowest image quality for Y-90 bremsstrahlung imaging.
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Affiliation(s)
- C Kayaş Demirtaş
- Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, 35340, İnciraltı, İzmir, Turkey
| | - M Can
- Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, 35340, İnciraltı, İzmir, Turkey
- Program of Nuclear Medicine Techniques, Vocational School of Health Services, Dokuz Eylül University, 35330, İnciralti, İzmir, Turkey
| | - Ö Karadeniz
- Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, 35340, İnciraltı, İzmir, Turkey
- Department of Physics, Faculty of Sciences, Dokuz Eylül University, 35390, Tınaztepe, Izmir, Turkey
| | - Ö Vupa Çilengiroğlu
- Department of Statistics, Faculty of Sciences, Dokuz Eylül University, 35390, Tınaztepe, Izmir, Turkey
| | - T Ertay
- Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, 35340, İnciraltı, İzmir, Turkey
- Department of Nuclear Medicine, Faculty of Medicine, Dokuz Eylül University, 35340, Inciraltı, Izmir, Turkey
| | - G Çapa Kaya
- Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, 35340, İnciraltı, İzmir, Turkey
- Department of Nuclear Medicine, Faculty of Medicine, Dokuz Eylül University, 35340, Inciraltı, Izmir, Turkey
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