A Positron-probe System for Arterial Input Function Quantification for Positron Emission Tomography in Humans
Overview
Biophysics
Affiliations
We developed an intra-arterial positron-probe (beta(+)-probe) system to measure the arterial time-activity concentration in humans for quantitative compartmental modeling of positron emission tomography studies. Performance was characterized in vitro, by using a uniform phantom to calculate dead time, linearity, and absolute detector sensitivity. In vitro evaluations in a uniform phantom showed a system dead time of 2.5 micros, linear regression between measured and true count rates with R(2)=0.999, and detector sensitivity of 6.9-7.0 counts/s kBq(-1) ml. These met or exceeded values of previously reported systems.
Velasco C, Mota-Cobian A, Mateo J, Espana S EJNMMI Phys. 2019; 6(1):25.
PMID: 31845002 PMC: 6915254. DOI: 10.1186/s40658-019-0263-x.
Warnock G, Bahri M, Goblet D, Giacomelli F, Lemaire C, Aerts J EJNMMI Res. 2012; 1(1):13.
PMID: 22214227 PMC: 3250971. DOI: 10.1186/2191-219X-1-13.