Results 201 to 210 of about 4,941,059 (260)
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Health Physics, 1958
This paper considers the influence of phantom geometry on the dose, particularly the maximum dose, within the phantom. It is shown that the maximum dose within an irradiated convex phantom cannnot exceed the maximum dose in a slab similarly irradiated and thus maximum doses computed for slabs supply upper estimates of doses for many phantoms. The first
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This paper considers the influence of phantom geometry on the dose, particularly the maximum dose, within the phantom. It is shown that the maximum dose within an irradiated convex phantom cannnot exceed the maximum dose in a slab similarly irradiated and thus maximum doses computed for slabs supply upper estimates of doses for many phantoms. The first
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Radiation risk is linear with dose at low doses
The British Journal of Radiology, 2005This paper presents a brief argument, based on a mechanistic approach, to show that radiation risk is linear with radiation dose from zero dose up. Similarities in cellular effects lead to the assumption of a common mechanism and the DNA double strand break is identified as the crucial radiation-induced lesion.
K H, Chadwick, H P, Leenhouts
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Dose and dose rate effectiveness of space radiation
Radiation Protection Dosimetry, 2006Dose and dose rate effectiveness factors (DDREF), in conjunction with other weighting factors, are commonly used to scale atomic bomb survivor data in order to establish limits for occupational radiation exposure, including radiation exposure in space. We use some well-known facts about the microscopic pattern of energy deposition of high-energy heavy ...
W, Schimmerling, F A, Cucinotta
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Painting Dose: The ART of Radiation
International Journal of Radiation Oncology*Biology*Physics, 2016The discovery of X rays in 1895 captivated society like no other scientific advance. Radiation instantly became the subject not only of numerous scientific papers but also of circus bazaars, poetry, fiction, costume design, comics, and marketing for household items.
Hannah J, Roberts +2 more
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Radiation dose in dental radiology
European Radiology, 2002The aim of this study was to compare radiation exposure in panoramic radiography (PR), dental CT, and digital volume tomography (DVT). An anthropomorphic Alderson-Rando phantom and two anatomical head phantoms with thermoluminescent dosimeters fixed at appropriate locations were exposed as in a dental examination.
M, Cohnen +4 more
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The Specification of Radiation Dose in Publications
Radiology, 1958Radiation dosimetry has made notable progress since the early days of the use of x-rays. The adoption in 1928 of the roentgen as a unit of dose based upon the ionization produced by x-rays in air, followed by many classical dose distribution studies, changed the application of ionizing radiation to biological material from a qualitative to a ...
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Effects of Low Doses of Radiation
Health Physics, 1996This is a brief review of what is known from experimental studies about the effects of low doses of radiation, and approaches that might improve risk estimates are discussed. The dose-response relationships for cancer induction by radiation vary markedly between tissues.
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