The influence of linear attenuation presents certain difficulties for quantitative single-photon
emission computed tomography (SPECT) in medical imaging. To apply an attenuation …

Improvements in image quality and quantitation measurement, and the addition of detailed
anatomical structures are important topics for single-photon emission tomography (SPECT) …

A three-dimensional reconstruction method for simultaneous compensation of attenuation,
scatter and distance-dependent detector response for single photon emission computed …

A penalized weighted least squares (PWLS) reconstruction algorithm is described that
simultaneously estimates activity and attenuation distributions from emission sinogram data …

The advantages of simultaneous acquisition of Tc-99m and Tl-201 myocardial perfusion
SPECT images can be fully realized only if the effects of the Tc-99m agent can be accurately …

A new method of image reconstruction for single photon emission computed tomography is
presented. The method is basically a filtered backprojection with some modifications. The …

Interest in single photon emission computed tomography (SPECT) has been renewed as a
result of the successful application of transmission (x-ray) CT to diagnostic radiology. Many …

A 3D physical model for iterative reconstruction in SPECT. has been developed and applied
to experimental data. The model incorporates nonuniform attenuation using reconstructed …

Quantitation in cardiac positron emission tomography (PET) and single-photon emission
computed tomography (SPECT) depends on being able to correct for several physical …

A local threshold for segmented attenuation correction technique has been developed for
positron emission tomography using short (2-3 minutes) post-injection transmission scans …