Conveners
PET/MR reconstruction
- Laura Biagi (IRCCS Stella Maris)
- Ian Law (Department of Clinical Physiology and Nuclear Medicine)
MRI-guided PET reconstruction has shown to reduce
noise, and increase spatial resolution and quantification
accuracy in PET imaging. However, its application has mainly
been limited to brain imaging due to the availability of high
resolution isotropic 3D MRI sequences, which are rarely used in
whole-body MRI. The present works employs multi-parametric
PET-MRI reconstruction to combine...
Regularized PET reconstruction using anatomical priors has the potential to improve the resolution of the images while suppressing noise and Gibbs artifacts. An algorithm is investigated which calculates a similarity metric between an initial PET reconstruction and multiple MR contrasts, and penalizes the reconstruction in combination with a standard BSREM regularizer. The effect of the...
Spinal cord PET is challenging in PET/MR due to the absence of vertebral bone in attenuation correction and the impact of partial volume effects. The aim of this study is to investigate whether a hybrid image reconstruction method can improve quantification accuracy in the spinal cord and PET image quality in PET/MR. Simulated PET data created with the XCAT phantom to represent physiological...
Abstract—Pituitary adenomas, occurring in approximately 1 in 1100 individuals, can lead to a spectrum of symptoms by disrupting normal pituitary gland function, thereby significantly impacting quality of life. Positron emission tomography (PET) using [$^{11}$C]-methionine offers additional information in surgical planning, crucial for precise localisation of metabolically active pituitary...
Purpose: 18F-FDG PET/MR offers a unique opportunity to probe the biology of small renal masses (SRMs; cT1a ≤4cm). To address the low spatial resolution of PET (4-5 mm), our aim is to improve the delineation and quantification of SRMs in PET through contrast-enhanced MR-guided reconstruction.
Method: A FDG PET/MR examination was performed in an mMR for a patient with a known SRM....
