On-line data processing of gamma camera image using USC-1 system

Journal Article · Sat Dec 01 04:00:00 EST 1973 · Kaku Igaku, v. 10, no. 6, pp. 539-547

OSTI ID:4313362

Matsumoto, M; Hirota, Y; Tateshi, K; Yasunaga, T

The gamma camera is widely used to measure the distribution of radioisotopes in the body, but the image itself is inferior in quality. This fact depends upon various factors, e.g., nonuniformity of the sensitivity and the limitation of resolution of the detector, and statistical fluctuation of the radioactivity. Various methods of data processing of the image data from a gamma camera using the digital computer are under development in order to obtain information for the clinical diagnosis. The analysis and display by the USC-1 data processing system for radioisotope image by delay-line gamma camera (GCA- 102) are described. This system is composed of 4K core memories, twin ADC, data control unit, MT recorder, PT puncher PT reader, digital printer, XY recorder and CRT display, and is connected on-line with the gamma camera. This system is the wired program computer, so that all memories are used to store the isotope image, and the processing time is rapid, compared to the case of using another minicomputer. Many methods of image processing are done by this system: calibration of isocount levels, digital data threshold, three dimensional display, contrast enhancement, profile histogram, smoothing, subtraction, and dynamic histograms on a regional area of interest. (auth)

• Research Organization: Kumamoto Univ., Japan
• NSA Number: NSA-29-029465
• OSTI ID: 4313362
• Journal Information: Kaku Igaku, v. 10, no. 6, pp. 539-547, Journal Name: Kaku Igaku, v. 10, no. 6, pp. 539-547; ISSN KAIGB
• Country of Publication: Japan
• Language: Japanese

Related Subjects

*GAMMA CAMERAS-- DATA PROCESSING
IMAGES
N46110* --Instrumentation--Radiation Detection Instruments-- General Detectors & Monitors
ON-LINE SYSTEMS