During the sterilisation procedure theradiation doseshould be measured. 辐射灭菌过程中,应采用剂量指示剂测定辐射剂量. 互联网 To describe theradiation doselevel in different sites of nuclear medicine department. 目的主要介绍了核医学科的各个工作场所辐射水平. ...
The concept of radiation dose, originating on a medical basis, is ; finding acceptance, in increasing proportions, in physical colloquial usage. ; Therefore, the necessity arises of obtaining the exactness necessary for physical ; magnitudes by a mathematical form of the dose definition. The variati...
Radiation is measured in 'millisieverts' or mSv A return transatlantic flight exposes us to around 0.1 mSv (equivalent to five chest X-rays). We absorb around 2.2 mSv annually from natural background radiation (equivalent to 110 chest X-rays) Radiographers are legally exposed to up to 20 mS...
Dose-equivalent or rem is a special unit used for measuring dose in a person. “The rem is the unit used for equating radiation absorption with biological damage.” The rem is a rather large unit of measure. Consequently, radiation exposure is generally measured in thousandths of a rem – o...
Evaluating the uncertainty in measurement of occupational exposure with personal dosemeters In the 1990 Recommendations of the ICRP it is stated that an uncertainty in a dose measured with a personal dosemeter under workplace conditions of a facto... van Dijk J. W. E - 《Radiation Protection ...
The radiation dose is determined in that the radical amount proportional to the radiation absorbed is measured and evaluated by electron spin resonance spectroscopy, and the ESR spectrum of at least one alanine control sample of a known radiation dose is measured and stored, the ESR spectra of ...
Using thermo luminescent dosimeters, we measured doses to the patient's eyes and parotid glands. We also compared patients' doses from the monoplane system with those from on our new flat panel biplane system(Axiom-artis, Siemens). We checked reduction of doses by optimizing the acquisition ...
Although imaging quality and resolution improve with the use of MDCT, one must understand that this is at the expense of radiation dose. Theeffective radiation dosetakes into account the tissue being irradiated and the type of radiation, and it is measured in units of rem or sievert (Sv), ...
Radiation doses from internal emitters are not easily measured directly. Direct radioactivity counting of the whole body or of radioactivity in body excretions must be used with mathematical models to calculate radiation doses to organs. One complication in dose calculations is the fact that, in ...
The Influence of Dose Rate on the Lethal and Mutagenic Effects of X-rays in Proliferating L5178Y Cells Differing in Radiation Sensitivity The lethal and mutagenic effects of ionizing radiation delivered at high (53 Gy/h) and low (0路02 Gy/h) dose rates were measured in two closely related ...