Document Detail

A New Leg Voxel Model in Two Different Positions for Simulation of the Non-uniform Distribution of 241Am in Leg Bones.
MedLine Citation:
PMID:  23192086     Owner:  NLM     Status:  In-Data-Review    
ABSTRACT: A new leg voxel model in two different positions (straight and bent) has been developed for in vivo measurement calibration purposes. This voxel phantom is a representation of a human leg that may provide a substantial enhancement to Monte Carlo modeling because it more accurately models different geometric leg positions and the non-uniform distribution of Am throughout the leg bones instead of assuming a one-position geometry and a uniform distribution of radionuclides. This was accomplished by performing a radiochemical analysis on small sections of the leg bones from the U.S. Transuranium and Uranium Registries (USTUR) case 0846. USTUR case 0846 represents an individual who was repeatedly contaminated by Am via chronic inhalation. To construct the voxel model, high resolution (2 mm) computed tomography (CT) images of the USTUR case 0846 leg were obtained in different positions. Thirty-six (36) objects (universes) were segmented manually from the CT images using 3D-Doctor software. Bones were divided into 30 small sections with an assigned weight exactly equal to the weight of bone sections obtained from radiochemical analysis of the USTUR case 0846 leg. The segmented images were then converted into a boundary file, and the Human Monitoring Laboratory (HML) voxelizer was used to convert the boundary file into the leg voxel phantom. Excluding the surrounding air regions, the straight leg phantom consists of 592,023 voxels, while the bent leg consists of 337,567 voxels. The resulting leg voxel model is now ready for use as an MCNPX input file to simulate in vivo measurement of bone-seeking radionuclides.Health Phys. 104(1):51-56; 2013.
Majid Khalaf; Richard R Brey; Jeff Meldrum
Related Documents :
24109916 - Forward kinematics using imu on-body sensor network for mobile analysis of human kinema...
22595026 - A simple reproducible and time saving method of semi-automatic dendrite spine density e...
24115566 - Integration of anterior neural plate patterning and morphogenesis by the wnt signalling...
23452956 - Understanding the comparative catarrhine context of human pelvic form: a 3d geometric m...
17879846 - On-line estimation and detection of abnormal substrate concentrations in wwtps using a ...
25369026 - Multiscale modelling and analysis of collective decision making in swarm robotics.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Health physics     Volume:  104     ISSN:  1538-5159     ISO Abbreviation:  Health Phys     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985093R     Medline TA:  Health Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  51-6     Citation Subset:  IM    
*Idaho State University, Nuclear Engineering and Health Physics, P.O. Box 8106, Pocatello ID 83209; †Idaho State University, Biological Science, 921 S. 8th Ave, Pocatello, ID 83209.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Activity concentration of natural radionuclides and radon and thoron exhalation rates in rocks used ...
Next Document:  Evaluation of (241)Am deposited in different parts of the leg bones and skeleton to justify in vivo ...