Article (Published version) (1.8 MB) - Free access
A novel energy mapping approach for CT-based attenuation correction in PET.
|Published in||Medical Physics. 2012, vol. 39, no. 4, p. 2078-89|
|Abstract||Dual-energy CT (DECT) is arguably the most accurate energy mapping technique in CT-based attenuation correction (CTAC) implemented on hybrid PET/CT systems. However, this approach is not attractive for clinical use owing to increased patient dose. The authors propose a novel energy mapping approach referred to as virtual DECT (VDECT) taking advantage of the DECT formulation but using CT data acquired at a single energy (kV(P)). For this purpose, the CT image acquired at one energy is used to generate the CT image at a second energy using calculated kV(P) conversion curves derived from phantom studies.|
|Keywords||Algorithms — Artifacts — Humans — Image Enhancement/methods — Image Interpretation, Computer-Assisted/methods — Lung/anatomy & histology/radiography — Phantoms, Imaging — Positron-Emission Tomography/methods — Reproducibility of Results — Sensitivity and Specificity — Subtraction Technique — Tomography, X-Ray Computed/methods|
|Research group||Imagerie Médicale (TEP et TEMP) (542)|
|TEIMOURIAN, B et al. A novel energy mapping approach for CT-based attenuation correction in PET. In: Medical Physics, 2012, vol. 39, n° 4, p. 2078-89. https://archive-ouverte.unige.ch/unige:30802|