Monte Carlo particle transport is a cornerstone of simulation in medical imaging and radiotherapy, but its computational cost can limit its use. Artificial intelligence offers several routes to accelerate these simulations, from denoising low-statistics results and predicting dose distributions to learning detector responses and generating particle phase spaces.
This talk surveys these...
Positron Emission Tomography (PET) systems can measure the decay properties of ortho-positronium (oPs), an intermediate bound state often formed during positron-electron annihilation that decays to photons after a short lifetime. The lifetime and decay kinematics of oPs can be used to probe material properties, have potential to serve as a novel biomarker in disease, and can be used test the...
We explore the adaptive algorithm in Positronium Lifetime Imaging (PLI), a new technique that analyses the local behaviour of positronium (Ps) – a quasi-stable electron-positron ($e^−e^+$) compound [1]. Voxel-dependent Ps lifetime spectra can be acquired using Positron Emission Tomography (PET) with specific $\beta^+\gamma$ sources that emit an additional prompt gamma photon. But mostly due to...
