Results 171 to 180 of about 13,471 (223)

RBE: Rendering by example

Proceedings of the Eleventh International Conference on Data Engineering, 2002
Rendering is defined to be a customized presentation of data in such a way that allows users to subsequently interact with the presented data. Traditionally such a user interface would be a custom application written using conventional programming languages; in contrast we propose an application-independent, declarative (i.e., what-you-want) language ...
Ravi Krishnamurthy, Moshé M. Zloof
openaire   +1 more source

Nanodosimetry and RBE values in radiotherapy

Radiation Protection Dosimetry, 2015
In a recent paper, the authors reported that the dose mean lineal energy, [Formula: see text] in a volume of about 10-15 nm is approximately proportional to the α-parameter in the linear-quadratic relation used in fractionated radiotherapy in both low- and high-LET beams. This was concluded after analyses of reported radiation weighting factors, WisoE (
Lennart, Lindborg, Martha, Hultqvist, Å, Carlsson Tedgren, Hooshang, Nikjoo   +3 more
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Dependence of RBE on neutron dose

The British Journal of Radiology, 1972
In a recent article (Alper, 1972) Dr. Alper states that the relative biological effectiveness, R, of neutrons at high neutron doses, DN, varies as the inverse of DN, provided the dose effect curves are exponential at higher doses. This might be considered to be in contradiction to our finding (Rossi, 1970; Kellerer and Rossi, 1971) that over a wide ...
A M, Kellerer, H H, Rossi
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RBE of carbon ions: Experimental data and the strategy of RBE calculation for treatment planning

Radiotherapy and Oncology, 2004
The main reason for the application of heavy ions like carbon in radiotherapy is the enhanced relative biological effectiveness RBE. In contrast to neutrons where RBE is widely independent from penetration depth, high energy carbon beams have a low RBE at the entrance and a high RBE in the target-volume. Therefore, the side effects to normal tissue are
W K, Weyrather, G, Kraft
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RBE and its interpretation

Strahlentherapie und Onkologie, 1999
Beams of heavy ions like carbon offer both, an improved dose distribution superior to any other type of radiation and an increased relative biological efficiency, RBE, which is restricted to the target volume only. The various dependencies of RBE on dose, atomic number and tissue sensitivity are described in this paper and are discussed in the ...
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The RBE of megavoltage photon and electron beams

The British Journal of Radiology, 1978
A recent MRC Working Party (1975) was convened to discuss the relative benefits of electron or photon megavoltage beams for therapy. The discussion arose due to a feeling among many radiotherapists that normal tissues (especially skin) would tolerate higher doses from electron beams (up to 20%) than from photon beams of similar primary energy.
P C, Williams, J H, Hendry
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RBE for lung and cord

International Journal of Radiation Oncology*Biology*Physics, 1982
The sparing effect of fractionation of neutron dose is very small for late damage in tissues. This is seen in the almost flat isoeffect curve for damage to skin, CNS and to lung. This means that differences in the RBE curves for these tissues are determined by differences in the slopes of the photon isoeffect curves.
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RBE: Mechanisms inferred from cytogenetics

Advances in Space Research, 1994
Cyclotron-accelerated heavy ion beams provide a fine degree of control over the physical parameters of radiation. Cytogenetics affords a view into the irradiated cell at the resolution of chromosomes. Combined they form a powerful means to probe the mechanisms of RBE.
E H, Goodwin, M N, Cornforth
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On the Question of RBE Reversal at High Doses

Radiation Research, 1992
We present theoretical arguments to explain observations of a "reversal" of the RBE at relatively large doses; that is, the RBE of high-LET vs low-LET radiation is less than one. Numerical examples are given and the results of Bogo et al. (Radiat. Res. 118, 341-352, 1989) are discussed qualitatively.
M, Zaider, H H, Rossi
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RBE of 14 MeV Neutrons in Barley

International Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine, 1967
SummaryThe effects of 14 meV neutrons were compared with those of 60Co γ-rays in barley seeds. After irradiation the seeds were germinated on wet filter paper and the lengths of the first leaf and coleoptiles were measured. The results for leaf growth can be fitted to an exponential function down to 20 per cent decrease for both types of irradiation ...
L, Cercek, M, Ebert, P, Frost, D, Greene
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