Geant4 evaluation of the impact of spatial resolution improvement on the contrast recovery coefficient in a small-animal PET system with collimation

2009 ◽  
Author(s):  
A.S. Ayan ◽  
R. Accorsi ◽  
J.S. Karp ◽  
S.D. Metzler
Keyword(s):  
Spatial Resolution ◽  
Small Animal ◽  
Small Animal Pet ◽  
Recovery Coefficient ◽  
Animal Pet ◽  
Resolution Improvement ◽  
Pet System ◽  
The Impact

scholarly journals NEMA NU4-2008 Performance Evaluation of Albira: A Two-Ring Small-Animal PET System Using Continuous LYSO Crystals

2016 ◽  
Vol 3 (1) ◽  
pp. 12-26 ◽  
Author(s):  
Malgorzata Z. Pajak ◽  
David Volgyes ◽  
Sally L. Pimlott ◽  
Carlos C. Salvador ◽  
Antonio S. Asensi ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Small Animal Imaging ◽  
Small Animal ◽  
Axial Direction ◽  
Small Animal Pet ◽  
Performance Review ◽  
Good Spatial Resolution ◽  
Positron Emission ◽  
Animal Images ◽  
Pet System

Goals:This paper presents the performance review based on a dual-ring Positron Emission Tomography (PET) scanner being a part of Bruker Albira: a multi-modal small-animal imaging platform. Each ring of Albira PET contains eight detectors arranged as octagon, and each detector is built using a single continuous lutetium-yttrium oxyorthosilicate crystal and multi-anode photo multiplier tube. In two-ring configuration, the scanner covers 94.4 mm in axial- and 80´80 mm in trans-axial direction, which is sufficient to acquire images of small animals (e.g.mice) without the need of moving the animal bed during the scan.Methods:All measurements and majority of data processing were performed according to the NEMA NU4-2008 standard with one exception. Due to the scanner geometry, the spatial resolution test was reconstructed using iterative algorithm instead of the analytical one. The main performance characteristics were compared with those of the other PET sub-systems of tri-modal small-animal scanners.Results:The measured spatial resolution at the centre of the axial field of view in radial, tangential and axial directions was 1.72, 1.70 and 2.45 mm, respectively. The scatter fraction for the mouse-like phantom was 9.8% and for the rat-like phantom, 21.8%. The maximum absolute sensitivity was 5.30%. Finally, the recovery co-efficients for 5, 4, 3, 2, 1 mm diameter rods in image quality phantom were: 0.90, 0.77, 0.66, 0.30 and 0.05, respectively.Conclusion:The Bruker Albira is a versatile small-animal multi-modal device that can be used for variety of studies. Overall the PET sub-system provides a good spatial resolution coupled with better-than average sensitivity and the ability to produce good quality animal images when administering low activities.

Concept of a novel small animal PET system based on liquid TriMethyl Bismuth

2018 ◽  
Author(s):  
Bjorn Gerke ◽  
Florian Angenendt ◽  
Konstantin Bolwin ◽  
Volker Hannen ◽  
Viacheslav Sharyy ◽  
...  
Keyword(s):  
Small Animal ◽  
Small Animal Pet ◽  
Animal Pet ◽  
Pet System

Concept of a novel small animal PET system based on liquid Trimethylbismuth

2019 ◽  
Author(s):  
B Gerke ◽  
S Peters ◽  
B Bolwin ◽  
V Hannen ◽  
C Weinheimer ◽  
...  
Keyword(s):  
Small Animal ◽  
Small Animal Pet ◽  
Animal Pet ◽  
Pet System

scholarly journals Spatial Resolution and Sensitivity of the Inveon Small-Animal PET Scanner

2008 ◽  
Vol 50 (1) ◽  
pp. 139-147 ◽  
Author(s):  
E. P. Visser ◽  
J. A. Disselhorst ◽  
M. Brom ◽  
P. Laverman ◽  
M. Gotthardt ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Small Animal ◽  
Small Animal Pet ◽  
Animal Pet
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