A detector response function design in pinhole SPECT including geometrical calibration
نویسندگان
چکیده
منابع مشابه
PET-based geometrical calibration of a pinhole SPECT add-on for an animal PET scanner.
We developed SPECT imaging capability on an animal PET scanner to provide a cost effective option for animal SPECT imaging. The SPECT add-on sub-system was enabled by mechanically integrating a multiple-pinhole collimator in the PET detector ring. This study introduces a method to calibrate the geometrical parameters of the SPECT add-on using the PET imaging capability of the scanner. The propo...
متن کاملPinhole SPECT vs. Cone-Beam SPECT
In single photon emission computed tomography (SPECT), pinhole and cone-beam collimators are used for small object imaging. It is accepted that a pinhole collimator should be used if the object is very small, and the cone-beam collimator should be used if the object is larger. This paper presents criteria to determine which collimation geometry is more advantageous in terms of spatial resolutio...
متن کاملCollimator-detector response compensation in molecular SPECT reconstruction using STIR framework
Introduction:It is well-recognized that collimator-detector response (CDR) is the main image blurring factor in SPECT. In this research, we compensated the images for CDR in molecular SPECT by using STIR reconstruction framework. Methods: To assess resolution recovery capability of the STIR, a phantom containing five point sources along with a micro Derenzo p...
متن کاملDesign and calibration of a passive detector for separating neutron, proton and alpha particles in mixed radiation fields
In this study, calibration process was carried out for deigned new CR-39 nuclear track detector for protons, neutrons and alpha particles separately under the same etching condition. In order to aim this purpose, americium-beryllium standard source (241Am-Be) and Plexiglas phantom for neutron irradiation, brass collimators and americium standard source (241Am) for alpha irradiation and the acce...
متن کاملTc-MIBI PINHOLE SPECT IN PRIMARY HYPERPARATHYROIDISM: COMPARISON WITH CONVENTIONAL SPECT, PLANAR SCINTIGRAPHY AND ULTRASONOGRAPHY
Purpose A pinhole collimator is routinely used to increase the resolution of scintigraphy. This prospective study was conducted to determine the interest of Tc-MIBI pinhole SPECT for the preoperative localization of parathyroid lesions in primary hyperparathyroidism. Methods All patients underwent a neck US, TcO4 and Tc-MIBI planar images, and two consecutive SPECT with a parallel (C-SPECT) and...
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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2013
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/58/7/2395