A scatter correction method for T1-201 images: A Monte Carlo investigation

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/23.256733· OSTI ID:5895487

Hademenos, G J; King, M A ^[1]; Ljungberg, M ^[2]; Zubal, G; Harrell, C R ^[3]

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1. Univ. of Massachusetts Medical Center, Worcester, MA (United States). Dept. of Nuclear Medicine
2. Lund Univ., (Sweden). Dept. of Radiation Physics
3. Yale Univ. School of Medicine, New Haven, CT (United States). Dept. of Diagnostic Radiology

Results from the application of a modified dual photopeak window (DPW) scatter correction method to Monte Carlo simulated T1-201 emission images are presented. In the Monte Carlo investigation, individual simulations were performed for six radiation emissions of T1-201. For each emission, point sources of T1-201 were imaged at various locations i na water-filled elliptical tub phantom using three energy windows: two 12% windows abutted at 72 keV and a third 10 keV window placed to the right of the photopeak window (95.001 keV - 105.000 keV). The third window was used to estimate the spilldown contribution from the T1-201 gamma rays in each of the two photopeak windows. Using the corrected counts in these two windows, the DPW method was applied to each point source image to estimate the scatter distribution. For point source images in both homogeneous and non-homogeneous attenuating media, the application of this modified version of DPW resulted in an approximately six-fold reduction in the scatter fraction and an excellent agreement of the shape of the tails between the estimated scatter distribution and the Monte Carlo-simulated truth. This method was also applied to two views of an extended cardiac distribution within an anthropomorphic phantom, again, resulting in at least a six-fold improvement between the scatter estimate and the Monte Carlo-simulated true scatter.

• DOE Contract Number: FG02-88ER60724
• OSTI ID: 5895487
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 40:4 part 1; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
CALCULATION METHODS
COMPUTERIZED TOMOGRAPHY
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
ELECTRON CAPTURE RADIOISOTOPES
EMISSION COMPUTED TOMOGRAPHY
HEAVY NUCLEI
IMAGE PROCESSING
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MOCKUP
MONTE CARLO METHOD
NUCLEI
ODD-EVEN NUCLEI
PHANTOMS
PROCESSING
RADIOISOTOPES
SCATTERING
SECONDS LIVING RADIOISOTOPES
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
STRUCTURAL MODELS
THALLIUM 201
THALLIUM ISOTOPES
TOMOGRAPHY