Conveners
Special session on PET/MR and TB-PET phantoms
- Kris Thielemans
- Stefaan Vandenberghe
Introduction: Quality assurance tests of functional nuclear medicine imaging with positron emission tomography (PET) in combination with MRI requires standardized phantoms visible in both modalities. The required measurements are usually performed using homogeneously filled PMMA phantoms. However, anthropomorphic, heterogeneous phantoms are needed to replicate patient examinations in the best...
MRI has a number of distinct clinical advantages: e.g. multi-sequence capabilities producing superior contrast among soft tissues, full 3D imaging, and no ionizing radiation. Additionally, quantitative imaging biomarkers (referred to as radiomics) based upon MRI show promising single-study results for diagnosis, treatment monitoring, and outcome prediction. While relatively simple measures...
Comparing scanners performance can be a rather complicated task, since the NEMA protocol was not designed considering long axial field of view PET scanners. This work compares several image quality measures using the NEMA IQ phantom for the Biograph Vision and Biograph Vision Quadra PET/CT scanners. Two acceptance angles of the Vision Quadra were considered in the comparison. The aim was to...
Introduction: Total-body PET systems have two main advantages over scanners with standard axial fields-of-view (AFOVs): their high sensitivity and the capability to image dynamic processes in major organs of the body simultaneously. NEMA PET performance standards (NEMA NU-2) were developed more than 2 decades ago for scanners with AFOV of 65 cm or less, and these measurements may not...
