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TABLE 43.3 Relative Biological Effectiveness (RBE) for Several Types of Radiation Radiation RBE (Sv,Gy or rem rad) X rays and g rays 1 Electrons 1.0–1.5 Slow neutrons 3-5 Protons 10 a particles 20 Heavy ions 20

TABLE 43.3 Relative Biological Effectiveness (RBE) for Several Types of Radiation Radiation RBE (Sv,Gy or rem rad) X rays and g rays 1 Electrons 1.0–1.5 Slow neutrons 3-5 Protons 10 a particles 20 Heavy ions 20

Principles Of Radiographic Imaging: An Art And A Science
Principles Of Radiographic Imaging: An Art And A Science
6th Edition
ISBN:9781337711067
Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Publisher:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Chapter8: X-ray Production
Section: Chapter Questions
Problem 2RQ
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Food is often irradiated with either x rays or electron beams to help prevent spoilage. A low dose of 5–75 kilorads (krad) helps to reduce and kill inactive parasites, a medium dose of 100– 400 krad kills microorganisms and pathogens such as salmonella, and a high dose of 2300–5700 krad sterilizes food so that it can be stored without refrigeration. (a) A dose of 175 krad kills spoilage microorganisms in fish. If x rays are used, what would be the dose in Gy, Sv, and rem, and how much energy would a 220 g portion of fish absorb? (See Table 43.3.) (b) Repeat part (a) if electrons of RBE 1.50 are used instead of x rays.

TABLE 43.3 Relative Biological Effectiveness (RBE) for Several Types of Radiation Radiation RBE (Sv,Gy or rem rad) X rays and g rays 1 Electrons 1.0–1.5 Slow neutrons 3-5 Protons 10 a particles 20 Heavy ions 20
Transcribed Image Text:TABLE 43.3 Relative Biological Effectiveness (RBE) for Several Types of Radiation Radiation RBE (Sv,Gy or rem rad) X rays and g rays 1 Electrons 1.0–1.5 Slow neutrons 3-5 Protons 10 a particles 20 Heavy ions 20
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