[HTML][HTML] Approximating anatomically-guided PET reconstruction in image space using a convolutional neural network

G Schramm, D Rigie, T Vahle, A Rezaei, K Van Laere… - Neuroimage, 2021 - Elsevier
In the last two decades, it has been shown that anatomically-guided PET reconstruction can
lead to improved bias-noise characteristics in brain PET imaging. However, despite …

Phase2Phase: respiratory motion-resolved reconstruction of free-breathing magnetic resonance imaging using deep learning without a ground truth for improved liver …

…, TJ Fraum, DR Ludwig, Y Yan, J Liu, T Vahle… - Investigative …, 2021 - journals.lww.com
Objectives Respiratory binning of free-breathing magnetic resonance imaging data reduces
motion blurring; however, it exacerbates noise and introduces severe artifacts due to …

Joint reconstruction of activity and attenuation in time-of-flight PET: a quantitative analysis

A Rezaei, CM Deroose, T Vahle… - Journal of Nuclear …, 2018 - Soc Nuclear Med
Methods for joint activity reconstruction and attenuation reconstruction of time-of-flight (TOF)
PET data provide an effective solution to attenuation correction when no (or incomplete or …

[HTML][HTML] Dosimetric evaluation of synthetic CT for magnetic resonance-only based radiotherapy planning of lung cancer

H Wang, H Chandarana, KT Block, T Vahle… - Radiation …, 2017 - Springer
Background Interest in MR-only treatment planning for radiation therapy is growing rapidly
with the emergence of integrated MRI/linear accelerator technology. The purpose of this study …

Free‐breathing radial imaging using a pilot‐tone radiofrequency transmitter for detection of respiratory motion

E Solomon, DS Rigie, T Vahle, J Paška… - Magnetic resonance …, 2021 - Wiley Online Library
Purpose To describe an approach for detection of respiratory signals using a transmitted
radiofrequency (RF) reference signal called Pilot‐Tone (PT) and to use the PT signal for …

Respiratory motion detection and correction for MR using the pilot tone: applications for MR and simultaneous PET/MR examinations

T Vahle, M Bacher, D Rigie, M Fenchel… - Investigative …, 2020 - journals.lww.com
Objectives The aim of this study was to develop a method for tracking respiratory motion
throughout full MR or PET/MR studies that requires only minimal additional hardware and no …

Simultaneous multislice diffusion-weighted imaging versus standard diffusion-weighted imaging in whole-body PET/MRI

FS Furtado, ND Mercaldo, T Vahle, T Benkert… - European …, 2023 - Springer
Objective To compare standard (STD-DWI) single-shot echo-planar imaging DWI and
simultaneous multislice (SMS) DWI during whole-body positron emission tomography (PET)/MRI …

MR‐assisted PET respiratory motion correction using deep‐learning based short‐scan motion fields

…, C Eldeniz, J Mhlanga, W Gan, T Vahle… - Magnetic resonance …, 2022 - Wiley Online Library
Purpose We evaluated the impact of PET respiratory motion correction (MoCo) in a phantom
and patients. Moreover, we proposed and examined a PET MoCo approach using motion …

Plane-dependent ML scatter scaling: 3D extension of the 2D simulated single scatter (SSS) estimate

A Rezaei, K Salvo, T Vahle, V Panin… - Physics in Medicine …, 2017 - iopscience.iop.org
Scatter correction is typically done using a simulation of the single scatter, which is then scaled
to account for multiple scatters and other possible model mismatches. This scaling factor …

Image reconstruction for interrupted-beam x-ray CT on diagnostic clinical scanners

MJ Muckley, B Chen, T Vahle… - Physics in Medicine …, 2019 - iopscience.iop.org
Low-dose x-ray CT is a major research area with high clinical impact. Compressed sensing
using view-based sparse sampling and sparsity-promoting regularization has shown …