نتایج جستجو برای: entrance surface dose

تعداد نتایج: 941173  

2010
Israel Teoldo da Costa Júlio Garganta Pablo Juan Greco Isabel Mesquita André Seabra

The present study examines the associations between tactical performance indexes with quality of tactical behaviours and birth-date quarters of youth Soccer players. The sample comprised a total of 534 youth players classified into four seasons of 3 months (January-March; April-June; July-September; October-December). A system of tactical assessment in Soccer (FUT-SAT) was used to collect data....

Journal: :The British journal of radiology 2000
J R Williams A Montgomery

The National Radiological Protection Board (NRPB) has recommended the introduction of dose-width product (DWP) for the measurement of patient dose in panoramic dental radiology and has proposed a reference level of 65 mGy mm for adult exposures. This paper describes a method for measuring DWP and dose-area product (DAP) using thermoluminescent dosemeters (TLDs). The technique was used on 16 set...

Journal: :Nanoscale 2013
Morteza Mahmoudi Mohammad A Shokrgozar Shahed Behzadi

It is known that what the cell actually "sees" at the nanoscale is an outer shell formed of 'protein corona' on the surface of nanoparticles (NPs). The amount and composition of various proteins on the corona are strongly dependent on the biophysicochemical properties of NPs, which have been extensively studied. However, the effect of a small variation in temperature, due to the human circadian...

Journal: :Health physics 2008
Vernon E Shockley Ronald L Kathren Elyse M Thomas

Many nuclear weapons complex workers were required to undergo medical x-ray examinations as a condition of their employment. To ensure that their dose reconstructions are complete, it is necessary to include the contributions from these examinations. X-ray procedures that must be evaluated include: (1) posterior-anterior and lateral radiography, and/or photofluorography, of the chest; (2) anter...

Journal: :Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2010
Alessandro M Costa Gustavo L Barbi Edenyse C Bertucci Heberton Ferreira Simone Z Sansavino Beatriz Colenci Linda V E Caldas

The ultimate check of the actual dose delivered to a patient in radiotherapy can only be achieved by using in vivo dosimetry. This work reports a pilot study to test the applicability of a thermoluminescent dosimetric system for performing in vivo entrance dose measurements in external photon beam radiotherapy. The measurements demonstrated the value of thermoluminescent dosimetry as a treatmen...

2018
Jaeman Son Se Byeong Lee Youngkyung Lim Sung Yong Park Kwanho Cho Myonggeun Yoon Dong Ho Shin

This study describes the development of a beam monitoring system for the verification of entrance dose map in pencil beam scanning (PBS) proton therapy based on fiber optic radiation sensors (FORS) and the validation of this system through a feasibility study. The beam monitoring system consisted of 128 optical fibers optically coupled to photo-multiplier tubes. The performance of the beam moni...

Journal: :Radiation Science and Technology 2023

The hyperconsciousness of radiation dose delivered to the patient during chest radiological X-ray procedures are prerequisite negate menace exposure. pinpoint this research is inquest doses received by for routine individual x-ray in health care system associated Kebbi State Government, Nigeria. Entrance Surface Dose and effective accordance with exposure factors collected real examinations wer...

2013
Ernest K. Osei Johnson Darko

The quantification of radiation risks associated with radiological examinations has been a subject of interest with the increased use of X-rays. Effective dose, which is a risk-weighted measure of radiation to organs in the body associated with radiological examination, is considered a good indicator of radiological risk. We have therefore investigated patient effective doses from radiological ...

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