The influence of minimal misalignment on the repeatability of PET images examined by the repositioning of point sources
A Maebatake, K Morita, G Akamatsu… - Journal of nuclear …, 2019 - Soc Nuclear Med
We aimed to evaluate the influence of minimal misalignment of a hot spot on the
repeatability of PET images using repositioning of point sources. Methods: Point sources …
repeatability of PET images using repositioning of point sources. Methods: Point sources …
Quantification of repositioning errors in PET studies through superimposition of emission and transmission scans. Comparison between acquisition with and without …
P Reinartz, M Zimny, U Cremerius, O Sabri… - Nuklearmedizin …, 1999 - europepmc.org
Aim The purpose of this study was to quantify positioning discrepancies between emission
(E) and transmission (T) scan using image fusion. A direct comparison of one-step and two …
(E) and transmission (T) scan using image fusion. A direct comparison of one-step and two …
Reducing inter-scanner PET image variability
168 Objectives: Our goal is to reduce systematic inter-scanner PET image variability. In spite
of standardized protocols for scanner calibration, normalization, attenuation/scatter/randoms …
of standardized protocols for scanner calibration, normalization, attenuation/scatter/randoms …
Registered error between PET and CT images confirmed by a water model
Y Chen, M Fan, H Xu, P Chen, C Zhang - Nuclear Techniques, 2012 - inis.iaea.org
[en] The registered error between PET and CT imaging system was confirmed by a water
model simulating clinical cases. A barrel of 6750 mL was filled with 59.2 MBq [" 1" 8F]-FDG …
model simulating clinical cases. A barrel of 6750 mL was filled with 59.2 MBq [" 1" 8F]-FDG …
[PDF][PDF] A rapid and accurate method to realign PET scans utilizing image edge information
JLR Andersson - Journal of nuclear medicine, 1995 - Soc Nuclear Med
Movementduringor between PET examinationsIs a common and serious problem.
Consequently, there is a great need for rapid, accurate and robust methods to realign image …
Consequently, there is a great need for rapid, accurate and robust methods to realign image …
Measuring PET spatial resolution using a cylinder phantom positioned at an oblique angle
A cylinder phantom positioned at a slightly oblique angle with respect to the z-axis of a PET
scanner allows for fine sampling of the edge-spread function. We show how this technique …
scanner allows for fine sampling of the edge-spread function. We show how this technique …
A practical, automated quality assurance method for measuring spatial resolution in PET
The use of different scanners, acquisition protocols, and reconstruction algorithms has been
identified as a problem that limits the use of PET in multicenter trials. The aim of this project …
identified as a problem that limits the use of PET in multicenter trials. The aim of this project …
Improvement in PET/CT image quality with a combination of point-spread function and time-of-flight in relation to reconstruction parameters
G Akamatsu, K Ishikawa, K Mitsumoto… - Journal of Nuclear …, 2012 - Soc Nuclear Med
The aim of this study was to investigate the effects of the point-spread function (PSF) and
time-of-flight (TOF) on improving 18F-FDG PET/CT images in relation to reconstruction …
time-of-flight (TOF) on improving 18F-FDG PET/CT images in relation to reconstruction …
The edge artifact in the point-spread function-based PET reconstruction at different sphere-to-background ratios of radioactivity
D Kidera, K Kihara, G Akamatsu, S Mikasa… - Annals of nuclear …, 2016 - Springer
Objective The aim of this study was to quantitatively evaluate the edge artifacts in PET
images reconstructed using the point-spread function (PSF) algorithm at different sphere-to …
images reconstructed using the point-spread function (PSF) algorithm at different sphere-to …
[PDF][PDF] Anatomic validation of spatial normalization methods for PET
SPGR 0.938 x 0.938 x 0.934 physical characteristics and general acquisition parameters of
the PET and MRI scanners used in each center. Data analyses were performed with all 24 …
the PET and MRI scanners used in each center. Data analyses were performed with all 24 …