Influence of the Pixel Sizes of Reference Computed Tomography on Single-photon Emission Computed Tomography Image Reconstruction Using Conjugate-gradient Algorithm.
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 73(10): 1039-1044, 2017.
Article
en Ja
| MEDLINE
| ID: mdl-29057775
ABSTRACT
PURPOSE:
The frame-of-reference using computed-tomography (CT) coordinate system on single-photon emission computed tomography (SPECT) reconstruction is one of the advanced characteristics of the xSPECT reconstruction system. The aim of this study was to reveal the influence of the high-resolution frame-of-reference on the xSPECT reconstruction.METHODS:
99mTc line-source phantom and National Electrical Manufacturers Association (NEMA) image quality phantom were scanned using the SPECT/CT system. xSPECT reconstructions were performed with the reference CT images in different sizes of the display field-of-view (DFOV) and pixel.RESULTS:
The pixel sizes of the reconstructed xSPECT images were close to 2.4 mm, which is acquired as originally projection data, even if the reference CT resolution was varied. The full width at half maximum (FWHM) of the line-source, absolute recovery coefficient, and background variability of image quality phantom were independent on the sizes of DFOV in the reference CT images.CONCLUSION:
The results of this study revealed that the image quality of the reconstructed xSPECT images is not influenced by the resolution of frame-of-reference on SPECT reconstruction.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Algoritmos
/
Tomografía Computarizada de Emisión de Fotón Único
Tipo de estudio:
Prognostic_studies
Idioma:
Ja
Revista:
Nihon Hoshasen Gijutsu Gakkai Zasshi
Año:
2017
Tipo del documento:
Article