Isodose Curves in a Phantom due to Diagnostic Quality X-Radiation

Ed, Trout

doi:10.1097/00004032-197711000-00001

Cited by 7 publications

(4 citation statements)

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“…This dosimeter overestimates actual conceptus dose because radiation attenuation by the mother's tissues is not considered. The fetal dose is typically not more than half of the dose recorded on the dosimeter worn by the worker (Dauer et al, 2015), due to the attenuation by the mother's abdominal wall and anterior uterine wall (Trout, 1977;Faulkner and Marshall, 1993;NCRP, 2010). Therefore, when two dosimeters are used, if the dosimeter under the protective apron shows a value for personal dose equivalent, H p (10), of <0.2 mSv month À1 , the equivalent dose to the conceptus over a 9-month period would be below the limit.…”

Section: Assessment Of Exposure In Selective Internal Radiation Therapymentioning

confidence: 99%

ICRP Publication 139: Occupational Radiological Protection in Interventional Procedures

López¹,

Dauer²,

Loose³

et al. 2018

Ann ICRP

179

123

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In recent publications, such as Publications 117 and 120, the Commission provided practical advice for physicians and other healthcare personnel on measures to protect their patients and themselves during interventional procedures. These measures can only be effective if they are encompassed by a framework of radiological protection elements, and by the availability of professionals with responsibilities in radiological protection. This framework includes a radiological protection programme with a strategy for exposure monitoring, protective garments, education and training, and quality assurance of the programme implementation. Professionals with responsibilities in occupational radiological protection for interventional procedures include: medical physicists; radiological protection specialists; personnel working in dosimetry services; clinical applications support personnel from the suppliers and maintenance companies; staff engaged in training, standardisation of equipment, and procedures; staff responsible for occupational health; hospital administrators responsible for providing financial support; and professional bodies and regulators. This publication addresses these elements and these audiences, and provides advice on specific issues, such as assessment of effective dose from dosimeter readings when an apron is worn, estimation of exposure of the lens of the eye (with and without protective eyewear), extremity monitoring, selection and testing of protective garments, and auditing the interventional procedures when occupational doses are unusually high or low (the latter meaning that the dosimeter may not have been worn).

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Section: Assessment Of Exposure In Selective Internal Radiation Therapymentioning

confidence: 99%

ICRP Publication 139: Occupational Radiological Protection in Interventional Procedures

López¹,

Dauer²,

Loose³

et al. 2018

Ann ICRP

179

123

View full text Add to dashboard Cite

show abstract

“…A limitation is that the fetal monitoring dosimeter typically overestimates the actual dose to the conceptus because radiation attenuation by the mother’s tissues is not considered [25, 26]. Some have suggested that the dose to the embryo and fetus can generally be approximated as one half of the personal equivalent dose at 1 cm, for dosimeters worn at the abdomen/waist [27, 28]. ICRP Publication 84 further indicates that fetal doses likely do not exceed 25% of the personal dosimeter measurement [12].…”

Section: Discussionmentioning

confidence: 99%

Radiological protection for pregnant women at a large academic medical Cancer Center

et al. 2017

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Purpose Most radiation protection programs, regulations and guidance apply specific restrictions to the occupational exposure of pregnant workers. The aim of this study was to compile data from the declared pregnant woman (DPW) radiation protection program over more than 5 years at a large, high-volume, comprehensive oncology academic/medical institution and to evaluate for effectiveness against existing regulations and guidance. Methods A retrospective review was performed of the data collected as part of the DPW radiation protection program from January 2010 through May 2016, including the number of declared pregnancies, worker category, personal and fetal dosimetry monitoring measurements, workplace modifications, as well as the monthly and total recorded badge results during the entire pregnancy. Results 245 pregnancies were declared. The mean monthly fetal radiation dosimetry result was 0.009 mSv with a median of 0.005 mSv and a maximum of 0.39 mSv. The mean total dose over the entire pregnancy was estimated to be 0.08 mSv with a median of 0.05 mSv and a maximum of 0.89 mSv. Only 8 (3.2%) of the 245 declared pregnancies required that workplace modifications be implemented for the worker. Conclusions The implementation of a declared pregnancy and fetal assessment program, careful planning, an understanding of the risks, and minimization of radiation dose by employing appropriate radiation safety measures as needed, can allow medical staff to perform procedures and normal activities without incurring significant risks to the conceptus, or significant interruptions of job activities for most medical workers.

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“…Specific evaluations need to be made depending on the sources being used in brachytherapy. For concomitant fluoroscopic imaging, the fetal dose is typically not more than half of the dose recorded on the dosimeter worn by the worker (Dauer et al., 2015), due to the attenuation by the mother’s abdominal wall and anterior uterine wall (Trout, 1977; Faulkner and Marshall, 1993; NCRP, 2010). Therefore, when two dosimeters are used, if the dosimeter under the protective apron shows a value for personal dose equivalent, Hp(10) < 0.2 mSv month −1 , the equivalent dose to the conceptus over a 9-month period would be below the limit, unless there is significant use of high-energy photon emitters.…”

Section: Individual Monitoring and Dose Assessmentmentioning

confidence: 99%

Occupational Radiological Protection in Brachytherapy

Mourtada

Clement

Dauer³

et al. 2021

Ann ICRP

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In 1928, when 1000 experts in radiology from all corners of the globe gathered in Stockholm for the Second International Congress of Radiology, a key impetus was the protection of x-ray and radium workers in hospitals. This would have included the protection of workers practising brachytherapy with radium sources, which began as early as 1901 (Gupta, 1995). A ground-breaking result was the first international recommendations in this field (ICR, 1929), and the beginning of the long journey for what is now the International Commission on Radiological Protection (ICRP).Today, the work of ICRP is much broader, covering the protection of patients, workers, the public, and the environment from all sources of ionising radiation. However, approximately one-third of ICRP's work still focuses on radiological protection in medicine. This goes beyond the protection of patients to include medical staff, friends and family of patients, and the public who may be impacted. One reason for this is the massive use of radiation in medicine; globally, well over 100 medical examinations and treatments every second use ionising radiation, including approximately one brachytherapy treatment every minute. Another reason is that medical exposures represent approximately 98% of all artificial exposures to ionising radiation (UNSCEAR, 2008).The use of radiation in medicine is continually evolving, and protection must adapt to the new techniques and technologies that continue to improve diagnosis and treatment. Some recent ICRP publications in this area cover radiopharmaceutical therapy, interventional procedures, medical imaging, cone beam computed tomog-

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Isodose Curves in a Phantom due to Diagnostic Quality X-Radiation

Cited by 7 publications

References 0 publications

ICRP Publication 139: Occupational Radiological Protection in Interventional Procedures

ICRP Publication 139: Occupational Radiological Protection in Interventional Procedures

Radiological protection for pregnant women at a large academic medical Cancer Center

Occupational Radiological Protection in Brachytherapy

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