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Dadun > Depósito Académico > Clínica Universidad de Navarra > Medicina nuclear > DA - CUN - Medicina nuclear - Artículos de revista >

Evaluation of spacial resolution of a PET scanner through the simulation and experimental measurement of the Recovery coefficient
Authors: Prieto, E. (Elena)
Marti-Climent, J.M. (Josep M.)
Arbizu, J. (J.)
Garrastachu, P. (P.)
Dominguez, I. (I.)
Quincoces, G. (Gemma)
Garcia-Velloso, M.J. (María José)
Lecumberri, P. (P.)
Gómez-Fernández, M. (M.)
Richter, J.A. (José Ángel)
Keywords: Materias Investigacion::Ciencias de la Salud::Medicina nuclear
PET
Issue Date: Jan-2010
ISSN: 0010-4825
Citation: Prieto, E; Marti-Climent,JM; Arbizu, J; Garrastachu, P; Dominguez, I; Quincoces, G; et al. Evaluation of spatial resolution of a PET scanner through the simulation and experimental measurement of the recovery coefficient. Comput Biol Med, 2010 Jan; 40 (1): 75-80
Abstract
Purpose: In order to measure spatial resolution of a PET tomograph in clinical conditions, this study describes and validates a method based on the recovery coefficient, a factor required to compensate underestimation in measured radioactivity concentration for small structures. Methods: In a PET image, the recovery factors of radioactive spheres were measured and their comparison with simulated recovery coefficients yielded the tomographic spatial resolution. Following this methodology, resolution was determined in different surrounding media and several conditions for reconstruction, including clinical conditions for brain PET studies. All spatial resolution values were compared with those obtained using classical methods with point and line sources. Results: In each considered condition, spatial resolution of the PET image estimated using the recovery coefficient showed good agreement with classical methods measurements, validating the procedure. Conclusion: Measurement of the recovery coefficient provides an assessment of tomographic spatial resolution, particularly in clinical studies conditions.
Permanent link: http://hdl.handle.net/10171/19229
Appears in Collections:DA - CUN - Medicina nuclear - Artículos de revista

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