The University of Michigan, Ann Arbor, Michigan stem from the fact that the point response
function for a stationary code depends on a spatial integral over the recorded data. Both the …

RESULTS The sensitivity of the aperture described is about 30 times that of the standard
Nuclear-Chicago pin hole collimator. This factor is just the ratio of the aperture areas and …

Spatial resolution of the EMI and Delta computed tomographic scanners has been
measured by recording the response to a nylon and water sunburst phantom (Siemens star) …

In a photographic camera, the camera lens forms an image of the object and the image is
detected by the photographic film. In the Anger camera described in Chapter 4, the pinhole …

The statistical quality of conventional nuclear medical imagery is limited by the small signal
collect through low‐efficiency conventional apertures. Coded‐aperture imaging overcomes …

KAY, KEYES JR, ANDSIMON and usefulness of the technique for both transmissive and
emissive imaging situations. The considerations discussed above provide a strong …

MATERIALS AND METHODS Figure lA is a diagram of the imaging system. An actual coded
shndowgram from a thyroid phantom is shown. It was photographically recorded from the …

A general analysis is presented of the limitations on transaxial tomographic imaging due to
the quantum statistics of the radiation source. An idealized model is used in which …

Relotivi TomogropAicB9\\@ 55ii@\\i: dence― counting of positron emitters and a high
degree of resolution achieved midway between the two detectors (10). The efficiency …

Advances in γ-camera design over the last 5 to 10 years have improved all aspects of image
quality, particularly for tomographic imaging. As system complexity increases, it becomes …