Energy window optimization in bremsstrahlung imaging after Yttrium-90 microsphere therapy.
Biomed Phys Eng Express
; 10(2)2024 Feb 13.
Article
em En
| MEDLINE
| ID: mdl-38306962
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.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioisótopos de Ítrio
/
Neoplasias
Limite:
Humans
Idioma:
En
Revista:
Biomed Phys Eng Express
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Turquia
País de publicação:
Reino Unido