PMID: 10501071Sep 29, 1999Paper

Fetal dose assessment from invasive special procedures by Monte Carlo methods

Medical Physics
R L Metzger, K A Van Riper

Abstract

The assessment of fetal dose from a special procedure in the clinical environment is difficult as patient size, fluoroscopic beam motion, and imaging sequences vary significantly from study to study. Fetal dose is particularly difficult to estimate when the fetus is exposed partially or totally to scatter radiation from images taken in other locations of the mother's body. A method to reliably estimate fetal dose has been developed by using template based input files for the Monte Carlo radiation transport code MCNP. Female patient phantoms at 0, 3, 6, and 9 months of pregnancy and source terms for common diagnostic tube potentials are used to rapidly build an input file for MCNP. The phantoms can be easily modified to fit patient shape. The geometry and beam location for each type of image acquired (i.e. fluoroscopy, spot filming, etc.) is verified by the use of a 3D visualization code (Sabrina). MCNP is then run to estimate the dose to the embryo/fetus and the exposure to skin entrance (ESE) for the beam being modeled. The actual ESE for the beam is then measured with ion chambers and the fetal dose is determined from the MCNP supplied ratio of ESE to fetal dose. Runs are made for each type of imaging and the doses are summed...Continue Reading

Citations

May 16, 2006·Medical Physics·John DamilakisNicholas Gourtsoyiannis
Jun 20, 2002·Biometrics·Ole F Christensen, Rasmus Waagepetersen
Jun 20, 2002·Biometrics·Yi Li, Louise Ryan
Aug 8, 2015·Biometrical Journal. Biometrische Zeitschrift·Laura L FernandesJeremy M G Taylor
Dec 4, 2012·Cognition·Stephanie DenisonThomas L Griffiths
Aug 14, 2012·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Khadidja Berradja, Nabil Boughanmi
Mar 20, 2012·Behavioural Processes·Timothy H C CheungFederico Sanabria
Jan 10, 2012·Journal of Statistical Planning and Inference·Peter F ThallJohannes E Wolff
Jun 13, 2009·Computer Methods and Programs in Biomedicine·Jean-Louis Foulley, Florence Jaffrézic
Nov 21, 2007·Ecotoxicology and Environmental Safety·S Ren
Aug 8, 2007·Theoretical Population Biology·Dario GasbarraElja Arjas
Apr 24, 2015·Cardiovascular and Interventional Radiology·Vittorio SemeraroAnna-Maria Belli
Jun 23, 2005·The British Journal of Mathematical and Statistical Psychology·J-P Fox
Jul 14, 2005·Biometrics·Thomas M BraunPeter F Thall
May 1, 2009·Journal of the Royal Statistical Society. Series C, Applied Statistics·Changying A Liu, Thomas M Braun
Jul 10, 2009·Biometrical Journal. Biometrische Zeitschrift·Tarn DuongM P Wand
Feb 4, 2009·The British Journal of Mathematical and Statistical Psychology·R H Klein EntinkJ-P Fox
Mar 27, 2009·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·G Yagüe-UtrillaC Moreno
Mar 22, 2008·Biometrics·Peter F ThallElihu H Estey
Feb 13, 2009·The New Phytologist·Kiona OgleBrenda Thompson
Feb 8, 2007·Molecular Ecology·Benjamin M BolkerAlan B Bolten
Sep 24, 2010·Statistics in Medicine·Karri SeppäEsa Läärä
Feb 19, 2010·Risk Analysis : an Official Publication of the Society for Risk Analysis·Premkumar N ThodiMahmoud R Haddara
Dec 8, 2004·Preventive Veterinary Medicine·A J BranscumW O Johnson
Nov 8, 2006·Mathematical Biosciences·Jukka Corander, Jing Tang
Aug 9, 2005·Journal of Neuroscience Methods·Matthieu Delescluse, Christophe Pouzat
Feb 7, 2015·Journal of the Mechanical Behavior of Biomedical Materials·Matthew Chua, Chee-Kong Chui
Mar 29, 2005·Evolution; International Journal of Organic Evolution·James H Degnan, Laura A Salter

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Epigenetics Insights from Twin Studies

Find the latest research on epigenetics and twin studies here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Regulation of Vocal-Motor Plasticity

Dopaminergic projections to the basal ganglia and nucleus accumbens shape the learning and plasticity of motivated behaviors across species including the regulation of vocal-motor plasticity and performance in songbirds. Discover the latest research on the regulation of vocal-motor plasticity here.

Myocardial Stunning

Myocardial stunning is a mechanical dysfunction that persists after reperfusion of previously ischemic tissue in the absence of irreversible damage including myocardial necrosis. Here is the latest research.