Features | Partner Sites | Information | LinkXpress
Sign In
TERARECON, INC.
AMPRONIX
SCHILLER AG

CT Scans Could Bolster Forensic Database to Identify Unknown Remains

By Medimaging International staff writers
Posted on 30 Jan 2014
Image: Cranium image reconstructed from CT scans (Photo courtesy of the North Carolina State University).
Image: Cranium image reconstructed from CT scans (Photo courtesy of the North Carolina State University).
New findings revealed that data from computed tomography (CT) scans can be incorporated into a growing forensic database to help determine the ancestry and sex of unidentified human remains. These findings may also have clinical applications for craniofacial surgeons.

“As forensic anthropologists, we can map specific coordinates on a skull and use software that we developed—called 3D-ID—to compare those three-dimensional coordinates with a database of biological characteristics,” said Dr. Ann Ross, a professor of anthropology at North Carolina State University (NC State; Raleigh, USA) and senior author of an article describing the research, published January 2014 issue of the Journal of Craniofacial Surgery. “That comparison can tell us the ancestry and sex of unidentified remains using only the skull, which is particularly valuable when dealing with incomplete skeletal remains.”

The 3D-ID database’s size, however, has been limited by the researchers’ access to modern skulls that have plainly recorded demographic histories. To develop a stronger database, Dr. Ross and her coworkers initiated a study to determine whether it was possible to get good skull coordinate data from living people by examining CT scans. The University of Pennsylvania Museum’s Morton Collection (Philadelphia, PA, USA) provided the NC State investigators with CT scans of 48 skulls. Researchers mapped the coordinates of the actual skulls by hand utilizing a digitizer (electronic stylus). Then they compared the data from the CT scans with the data from the manual mapping of the skulls.

The researchers discovered that eight bilateral coordinates on the skull were consistent for both the CT scans and manual mapping. “This will allow us to significantly expand the 3D-ID database,” Dr. Ross said. “And these bilateral coordinates give important clues to ancestry, because they include cheekbones and other facial characteristics.”

With the five midline coordinates, however, the researchers demonstrated inconsistencies between the CT scans and manual mapping. “More research is needed to determine what causes these inconsistencies, and whether we’ll be able to retrieve accurate midline data from CT scans,” stated Amanda Hale, a former master’s student at NC State, and lead author of the study.

This research may also help craniofacial surgeons. “An improved understanding of the flaws in how CT scans map skull features could help surgeons more accurately map landmarks for reconstructive surgery,” Dr. Hale emphasized.

Related Links:

North Carolina State University



RADCAL
RTI ELECTRONICS AB
SuperSonic Imagine

Channels

MRI

view channel
Image: The quantitative character of the novel 3D technique on MR scans from a patient with primary liver cancer is demonstrated. Images A and B show the scan of the patient before being treated with chemoembolization. The new 3D technique helped quantify the volume and distribution of viable tumor tissue (shown in red and yellow colors). Images C and D demonstrate MR scans acquired after the treatment. The new 3D method helped the radiologists to quantify the vast central destruction of the tumor after the treatment (the dead tumor is represented by the blue color) (Photo courtesy of Johns Hopkins Medicine).

3D MRI Offers Improved Prediction of Survival After Chemotherapy for Liver Tumors

Researchers are using specialized three-dimensional (3D) magnetic resonance imaging (MRI) scanning technology to accurately measure living and dying liver tumor tissue in order to quickly show whether... Read more

Ultrasound

view channel
Image: Siemens Healthcare has launched the HELX Evolution, the newest iteration of its Acuson S range of ultrasound imaging systems (Photo courtesy of Siemens Healthcare).

Ultrasound Imaging System Enhancements Include High Definition Transducers, Sophisticated Elastography, and Tissue Strain Analysis

New features designed for a range of ultrasound systems include enhanced image quality with a large 21.5-inch liquid crystal diode (LCD) monitor, high definition (HD) transducers, optimized contrast agent... Read more

Nuclear medicine

view channel
Image: Sagittal section of brain PET image at four hours after 64CuCl2 injection with disulfiram or D-penicillamine in MD model mice (Photo courtesy of the RIKEN Center for Life Science Technologies).

PET Imaging Used to Assess Effectiveness of Menkes Disease Treatments

Japanese scientists are using positron emission tomography (PET) imaging to visualize the distribution of copper in the body using lab mice. Copper distribution is deregulated in a genetic disorder called... Read more

General/Advanced Imaging

view channel

Secondary Light Emission Generated by Plasmonic Nanostructures May Improve Medical Imaging Technology

New clues into light emission at different wavelengths generated by elements known plasmonic nanostructures may help to improve medical imaging technology. A plasmon is a quantum of plasma oscillation. The plasmon is a quasiparticle resulting from the quantization of plasma oscillations just as photons, and phonons are... Read more

Imaging IT

view channel

Software Designed for the Assessment of Orthopedic Implant Fixation and Bone Segment Motion

Model-based roentgen stereophotogrammetric analysis (MBRSA) software has been developed for evaluation of orthopedic implant fixation and bone segment motion. The software is the first to measure the in vivo three-dimensional (3D) position and/or relative motion of metal implants, markers beads, and/or bone segments in... Read more

Industry News

view channel

Collaboration Expands Capacity for Proton Therapy Clinical Research and Patient Treatments

Varian Medical Systems (Palo Alto, CA, USA) and the Paul Scherrer Institute (PSI; Villigen PSI, Switzerland) are extending an existing collaboration in the field of proton therapy to offer patients more accurate cancer treatments using intensity-modulated proton therapy (IMPT). Under the agreement, Varian will also... Read more
 
Copyright © 2000-2014 Globetech Media. All rights reserved.