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The application of a masked orbiting transmission source for attenuation correction in PET
1989
Journal of Nuclear Medicine
A new technique for attenuation correction in positron emission tomography is introduced and evaluated. Transmission scans are performed with a point source of 68Ge encapsulated in a lead collimator that masks the source into a fan beam in the scanning plane. The source orbits the patient section at the edge of the slice defining collimator. Only events acquired by detector pairs that are collinear with the source are used to calculate the attenuation coefficients. Events from detector pairs
pmid:2786947
fatcat:obj263it7jadri24t4woan74vy