INVESTIGADORES
PÉREZ Pedro Antonio
congresos y reuniones científicas
Título:
Spatial resolution limitations due to differences between positron emission position and annihilation detection localization
Autor/es:
P. PÉREZ; M. VALENTE
Lugar:
Porto Alegre
Reunión:
Conferencia; 18th International Conference on Medical Physics.; 2011
Institución organizadora:
International Organization for Medical Physics
Resumen:
<!--
@page { margin: 2cm }
P { margin-bottom: 0.21cm }
-->Since its successful implementation for
clinical diagnostic, positron emission tomography represents the most
promising medical imaging techniques. The recent great growth of PET
imaging is mainly due to its capability to trace the biologic
pathways of different compounds within patient, assuming patient can
be radio labeled with some PET isotope. Disregarding the isotope
type, the PET imaging method is based on the detection of two 511keV
gamma photons being emitted at almost 180 degrees to each other as
consequence of electron-positron annihilation. Therefore, this
imaging method is intrinsically limited by random uncertainties in
spatial resolution related with differences between positron emission
actual position an detected annihilation localization. This work
presents a Monte Carlo approach for the study of the influence of
this effect for different isotopes of the potential implementation in
PET.