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Energy Window Optimization in Bremsstrahlung Imaging After Yttrium-90 Microsphere Therapy.
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 qualitydepends on acquisition energy window. This research aimed energy window optimization forYttrium-90 bremsstrahlung imaging and 48 patients with various types of cancer receivedradioembolization therapy were investigated. Patients were imaged using a GE HealthcareOptima 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 the55-400 keV energy range. The data set, formed with the % FOV, contrast, and spatialresolution of image quality parameters calculated from these images, was statisticallyexamined with ANOVA and Tukey tests. According to the visual evaluations andANOVA/Tukey test results, it was statistically concluded that energy window of 90-110 keVis the optimal energy window while 60–400 keV energy ranges show the lowest image qualityfor Y-90 bremsstrahlung imaging
Energy Window Optimization in Bremsstrahlung Imaging After Yttrium-90 Microsphere Therapy.
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 qualitydepends on acquisition energy window. This research aimed energy window optimization forYttrium-90 bremsstrahlung imaging and 48 patients with various types of cancer receivedradioembolization therapy were investigated. Patients were imaged using a GE HealthcareOptima 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 the55-400 keV energy range. The data set, formed with the % FOV, contrast, and spatialresolution of image quality parameters calculated from these images, was statisticallyexamined with ANOVA and Tukey tests. According to the visual evaluations andANOVA/Tukey test results, it was statistically concluded that energy window of 90-110 keVis the optimal energy window while 60–400 keV energy ranges show the lowest image qualityfor Y-90 bremsstrahlung imaging
Energy Window Optimization in Bremsstrahlung Imaging After Yttrium-90 Microsphere Therapy.
Çapa Kaya, Gamze (author) / Can, Melek (author) / Kayaş Demirtaş, Cansu (author) / Ertay, Türkan (author) / Vupa Çilengiroğlu, Özgül (author) / Karadeniz, Özlem (author)
2024-02-02
Article (Journal)
Electronic Resource
English
DDC:
690
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