Title :
Bone equivalent liquid solution to assess accuracy of transmission measurements in SPECT and PET
Author :
De Dreuille, Olivier ; Strijckmans, Véronique ; Ameida, P. ; Loc´h, Christian ; Bendriem, Bernard
Author_Institution :
Service Hosp. Frederic Joliot, Orsay, France
fDate :
6/1/1997 12:00:00 AM
Abstract :
Quantitation in Emission Tomography (PET and SPECT) requires that several physical factors are taken into account. Attenuation, which can be determined on SPECT and PET devices, can be corrected using transmission tomography. Here, the authors quantitatively compared the relative performance of transmission scans in SPECT and PET using a calibrated liquid solution with a linear attenuation coefficient (μ) nearly equivalent to that of skeletal cranium bone over the range of energies 50 to 600 keV. The authors showed that contrast recovery are similar in PET and SPECT for large structures (>30 mm), but higher in PET as object size decreases
Keywords :
biomedical measurement; bone; measurement errors; positron emission tomography; single photon emission computed tomography; 30 mm; 50 to 600 keV; bone equivalent liquid solution; calibrated liquid solution; contrast recovery; linear attenuation coefficient; medical diagnostic imaging; nuclear medicine; object size; skeletal cranium bone; transmission measurements accuracy assessment; Attenuation measurement; Bones; Cameras; Cranium; Energy resolution; Filling; Head; Imaging phantoms; Positron emission tomography; Skeleton;
Journal_Title :
Nuclear Science, IEEE Transactions on
