Accession Number : AD0729971

Title :   Dental and Medical Applications of Thermal Neutron Radiography.

Descriptive Note : Rept. no. 1 (Annual) Oct 69-Oct 70,

Corporate Author : REED COLL PORTLAND OREG

Personal Author(s) : Parker,William L. ; Savara,Bhim S. ; Rau,John A.

Report Date : OCT 1970

Pagination or Media Count : 18

Abstract : Neutron radiography will have similar unique applications in medicine as it has been shown to have in industrial radiography. Recent advances in industrial neutron radiography have shown that neutron radiography can in specific cases easily supply information which is not available with standard x-ray techniques. Unlike in X-radiography where beam attenuation increases regularly with the atomic weight of the material being radiographed, attenuation in thermal neutron radiography is a fairly random function of atomic number. This particularly strong attenuation of thermal neutrons by hydrogeneous materials should make neutron radiography of biological specimens complementary to X-radiography. The approach to the study of dental and medical applications of neutron radiography has concentrated on the following areas: Development of a neutron radiography facility at the Triga Mark I reactor at Reed College; Preliminary examination of photographic techniques for detecting neutrons; The study of anti scattering grids to filter scattered neutrons from the neutron beam transmitted by a specimen; The study of the use of contrast agents as a means of image enhancement; The study of radiation damage in rats subjected to low level neutron exposure.

Descriptors :   (*RADIOGRAPHY, *MEDICINE), (*DENTISTRY, RADIOGRAPHY), PHOTOGRAPHY, RADIATION EFFECTS, TISSUES(BIOLOGY), THERMAL NEUTRONS

Subject Categories : Medicine and Medical Research
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE