The authors have developed a method to estimate the 24-hour sodium iodide thyroid uptake
based on a 5-minute Tc-99m pertechnetate thyroid uptake using the equation: Estimated …

Two types of distortions are produced by the gamma camera. One is nonuniform sensitivity
re sponse over the detecting area. The second is spatial distortion; that is, the displacement …

MATERIALS AND METHODS Sixteen patients, who were referred to the Nuclear Medicine
Department, VA Hospital, Gainesville, Florida, for routine cisternography were studied. …

MATERIALS AND METHODS Systems description. The imaging systems studied were a
Pho/Gamma III scintillation camera, initially with conventional S-11 phototubes and later with …

A digital computer data acquisition, display, and analysis system for use with a scintillation
camera is described. The system makes possible quantitative analysis of a scan image now …

RESULTS Particle size. Particle size distribution was deter mined using a Coulter counter (Model
B) which was calibrated for particle volume using ragweed pollen. The distribution of …

MATERIALS AND METHODS Since the method of obtaining effective spinal ac tivity clearance
data, corrected for body background, has been fully described previously (7), it will only …

The general topic of computers and nuclear medicine quality control may be approached from
two main areas; controlling the quality of computerized studies, and computer applications …

MATERIALS AND METHODS All T3 and T4 kits were used according to the procedures
recommended by the manufacturers. The same technician analyzed all samples in a consistent …

METHOD Neglecting scatter and septal penetration, the geo metric resolution index Rg at
distance b from the surface of a straight-bore collimator can be calcu lated from the equation …