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A "Large Crystal" Scintillation Scanner^1,2,

Saskatchewan, Canada

ABSTRACT

A description is given of a radio-isotope scanner which employs a 5'' dia. x 4'' deep NaI crystal as the primary detector in conjunction with various types of collimators. The scan is displayed on the face of a cathode ray oscilloscope and recorded on a Polaroid transparency. A magnetic tape recording is made to ensure that no scan information is inadvertently lost, but is stored for later reference. The transparency of the scan may be displayed at life size with varying levels of intensity on a television screen, so that minor variations of count rate may be emphasized to enhance areas of low uptake.

FOOTNOTES

¹ From the Saskatoon Cancer Clinic, Saskatoon, Saskatchewan, Canada.

² Research Grants-in-Aid from the National Cancer Institute of Canada.

³ National Cancer Institute of Canada Research Fellow in Radiation Physics.

⁴ Senior Physicist, Saskatoon Cancer Clinic, Asst. Prof. University of Saskatchewan.

⁵ Acme Machine & Electric Co., Ltd., Saskatoon, Saskatchewan.