A novel method for fast image simulation of flat panel detectors.

A novel method for fast image simulation of flat panel detectors.
Phys Med Biol. 2019 Mar 22;:
Authors: Shi M, Myronakis ME, Hu YH, Jacobson MW, Lehmann M, Fueglistaller R, Huber P, Baturin P, Wang AS, Ferguson D, Harris T, Morf D, Berbeco RI
Abstract
We have developed a novel method for fast image simulation of flat panel detectors, based on the photon energy deposition efficiency and the optical spread function (OSF). The proposed method, FastEPID, determines the photon detection using photon energy deposition and replaces particle transport within the detector with precalculated OSFs. The FastEPID results are validated against experimental measurement and conventional Monte Carlo simulation in terms of modulation transfer function (MTF), signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), contrast, and relative difference of pixel value, obtained with a slanted slit image, Las Vegas phantom, and anthropomorphic pelvis phantom. Excellent agreement is observed between simulation and measurement in all cases. Without degrading image quality, the FastEPID method is capable of reducing simulation time up to a factor of 150. Multiple applications, such as imager design optimization for planar and volumetric imaging, are expected to benefit from the implementation of the FastEPID method.
PMID: 30901759 [PubMed - as supplied by publisher]

Source: Physics in Medicine and Biology - March 21, 2019 Category: Physics Authors: Shi M, Myronakis ME, Hu YH, Jacobson MW, Lehmann M, Fueglistaller R, Huber P, Baturin P, Wang AS, Ferguson D, Harris T, Morf D, Berbeco RI Tags: Phys Med Biol Source Type: research