A5010706501- Archaeology and Natural History
- Historical and Cultural Archaeology Studies
- American Environmental and Regional History
- Radiation Therapy and Dosimetry
- Radiation Dose and Imaging
- Nuclear Physics and Applications
- Advanced Radiotherapy Techniques
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Radiation Effects and Dosimetry
- Radiation Shielding Materials Analysis
- Radiation Detection and Scintillator Technologies
- Peroxisome Proliferator-Activated Receptors
- Electronic Health Records Systems
- Advances in Oncology and Radiotherapy
- Boron Compounds in Chemistry
- Archaeology and ancient environmental studies
- American History and Culture
- Nuclear reactor physics and engineering
- Retinoids in leukemia and cellular processes
- Graphite, nuclear technology, radiation studies
- Digital Radiography and Breast Imaging
- Systemic Lupus Erythematosus Research
- Nuclear and radioactivity studies
- Pharmaceutical Practices and Patient Outcomes
Walden University
2024
University of Edinburgh
1995-2022
Williams & Associates
2016
University of South Florida
1982-2014
Edinburgh Royal Infirmary
2012
Johns Hopkins University
1994-2000
Johns Hopkins Bayview Medical Center
2000
Western General Hospital
1985-1998
Universities UK
1992
St James's University Hospital
1989
A common basis for neutron dosimetry will be one of the essential requirements comparison clinical results obtained at increasing number fast-neutron radiotherapy facilities. Co-operation between physicists involved in has been established Europe by High LET Therapy Project Group under sponsorship European Organization Research on Treatment Cancer, EORTC. In September 1978, group decided that should intensify their contacts and organize a formal co-operation. For this purpose Clinical...
Staff doses arising from the use of X-rays are principally due to scattered radiation. This is related dose received by patient expressed as dose-area product (DAP). Doses patients in interventional radiology generally higher than for other fluoroscopically guided procedures. radiologists are, therefore, amongst highest associated with diagnostic X-rays. The results staff monitoring normalized DAP should provide an indicator those procedures which particularly high radiation exposures staff,...
A dosimetry intercomparison has been carried out for all 64 radiotherapy centres in the UK. Doses were measured with an ionization chamber epoxy resin water-substitute phantom of relatively simple geometry. Reference-point measurements made MV photon beams. For 61 Co-60 beams, a mean ratio measured-to-stated dose 1.002 was observed standard deviation 0.014, whilst 100 X-ray corresponding figures 1.003 and 0.015, 97% beams lay within +or- 3% deviation. One measurement instrumental discovering...
In this supplement to both the American and European protocols for clinical neutron dosimetry, new recommendations are given with respect basic physical parameters experimental techniques employed. For air kerma or exposure calibration in a photon beam is most suitable method of tissue‐equivalent ionization chambers until standard field becomes available. More recent data recommended required as well measurements beam. Water reference phantom material due its similarity absorption scattering...
The specification of shielding for CT facilities in the UK and many other countries has been based on isodose scatter curves supplied by manufacturers combined with scanner's mAs workload. Shielding calculations radiography fluoroscopy are linked to a dose measurement radiation incident patient called kerma-area product (KAP), related quantity, dose-length (DLP), is now employed assessment doses. In this study link between air kerma DLP investigated scanners from different manufacturers....
Scatter dose as a function of dose-area product (DAP) has been studied over range tube potentials and scattering angles. Data are presented to permit the calculation scatter from DAP at distances 1 m or more patient. This method used calculate absorbed walls six existing X-ray rooms which for interventional radiology, angiography barium contrast studies. These calculations have compared with measurements using thermoluminescent dosemeters. The median ratio measured calculated was 0.50...
Computed tomography (CT) scanning rooms and interventional x-ray facilities with heavy workloads may require the installation of shielding to protect against radiation scattered from walls or ceiling slabs. This is particularly important for protection those operating equipment within control cubicles who be exposed over top protective barrier round side if a cubicle door not included. Data available on magnitude this tertiary scatter concrete slabs are limited. Moreover, there no way in...
The specification of shielding for fluoroscopic facilities in the UK is based on determination scatter incident a barrier using simple formula linking kerma area product and kerma. Over last few years there has been move to incorporate additional copper filtration equipment used high dose interventional examinations, existing does not take this into account. spectral transmission characteristics scattered radiation resulting from primary x-ray beam filtered with are known. In study,...
Objective Considerable international investment in hospital electronic prescribing (ePrescribing) systems has been made, but despite this, it is proving difficult for most organizations to realize safety, quality, and efficiency gains prescribing. The objective of this work was develop policy-relevant insights into the optimization ePrescribing maximize benefits minimize risks these expensive digital health infrastructures. Methods We undertook a systematic scoping review literature by...
Protons and alpha particles of high linear energy transfer (LET) have shown an increased relative biological effectiveness (RBE) with respect to X/gamma rays for several cellular molecular endpoints in different vitro cell systems. To contribute understanding the biochemical mechanisms involved LET radiation, extensive study has been designed. The present work reports preliminary result this on two human tumoural lines, DLD1 HCT116, (with p53 status), which indicate that these does not...