1770 Objectives PET quantitation in the lung is affected by local density changes due to
respiration and hence needs accurate attenuation maps (AM) for attenuation correction (AC) …

Accurate PET quantitation requires a matched attenuation map. Obtaining matched CT
attenuation maps in the thorax is difficult due to the respiratory cycle which causes both …

PET quantitation depends on the accuracy of the CT-derived attenuation correction map. In
the lung, respiration leads to both positional and density mismatches, causing PET …

Purpose It has recently been recognized that PET/CT may play a role in diffuse parenchymal
lung disease. However, interpretation can be confounded due to the variability in lung …

2078 Objectives Correcting for tissue fraction effects (TFE) during PET/CT imaging increases
understanding of measured 18-FDG uptake within the lungs and reduces inter-subject …

Tracer kinetic modeling in dynamic PET has the potential to improve the diagnosis,
prognosis, and research of lung diseases. The advent of total-body PET systems with much …

537 Objectives Lung density changes during respiration which affects PET/CT quantification
in the lung. We investigate the relation between density changes measured in CT, FDG …

241445 Introduction: Current harmonisation efforts in PET/CT focus on oncology and brain
studies. However, there is a similar need for studies of diffuse lung disease [1], where voxel …

1741 Objectives: Respiratory motion in PET degrades images and limits detectability and
characterization of small or low-contrast lesions. Although image quality can in principle be …

Background Matched attenuation maps are vital for obtaining accurate and reproducible
kinetic and static parameter estimates from PET data. With increased interest in PET/CT …