News | April 21, 2010

Computerized Segmentation on CT Proves Reliable

April 21, 2010 - A computerized segmentation system can reliably estimate changes in tumor size on computed tomography (CT) scans relative to radiologists' manual segmentation, according to new research published in the May issue of the American Journal of Roentgenology.

Researchers in the departments of Radiology at University of Michigan, Johns Hopkins Hospitals, and the department of Otolaryngology-Head and Neck Surgery, University of Michigan, conducted the study. They set out to determine the feasibility of computerized segmentation of lesions on head and neck CT scans and evaluate its potential for estimating changes in tumor volume in response to treatment of head and neck cancers.

The computer-estimated change in tumor volume and percentage change in tumor volume between the pre- and post-treatment scans achieved a high correlation with the estimates from manual segmentation for the 13 primary tumors. The average error in estimating the percentage change in tumor volume by automatic segmentation relative to the radiologists' average error was –1.5 percent ± 5.4 percent.

The researchers concluded the computerized segmentation system was reliable in estimating changes in tumor size on CT scans compared to manual segmentation performed by a radiologists. They added, "This data can be used to calculate changes in tumor size on pre- and post-treatment scans to assess response to treatment."

Reference: Hadjiiski, L., Mukherji, S., Mohannad, I., et al. Head and Neck Cancers on CT: Preliminary Study of Treatment Response Assessment Based on Computerized Volume Analysis. American Journal of Roentgenology. May 2010.

For more information: www.ajronline.org

Related Content

Report Finds Identifying Patients for Lung Cancer Screening Not So Simple
News | Lung Cancer | June 18, 2018
New findings in the current issue of The American Journal of Managed Care suggest that getting the right patients to...
Weight-Bearing CT International Study Group Hosts  Scientific Session at AOFAS Conference
News | Computed Tomography (CT) | June 15, 2018
June 15, 2018 —The Weight-Bearing CT International Study Group will host a scientific session on the benefits of weig
Florida Hospital First in State to Adopt NeuroLogica's BodyTom Elite CT
News | Computed Tomography (CT) | June 14, 2018
June 14, 2018 — NeuroLogica, a subsidiary of Samsung Electronics Co.
Riverain Technologies Issued U.S. Patent for Vessel Suppression Technology
News | Computed Tomography (CT) | June 14, 2018
Riverain Technologies announced that the United States Patent and Trademark Office (USPTO) has awarded the company a...
360 Photos | 360 View Photos | June 14, 2018
This is a 360 degree image from the Canon Aquilion 64-slice...
American Society of Neuroradiology Honors Peter Chang with Cornelius G. Dyke Memorial Award
News | Neuro Imaging | June 13, 2018
Peter Chang, M.D., current neuroradiology fellow at UCSF and recently recruited co-director of the UCI Center for...
NewYork-Presbyterian Expands Mobile Stroke Treatment Unit Fleet

Image courtesy of NewYork-Presbyterian Hospital

News | Stroke | June 11, 2018
NewYork-Presbyterian, in collaboration with Weill Cornell Medicine, Columbia University Irving Medical Center and the...
Raysearch RayStation
Feature | Radiation Therapy | June 05, 2018 | By Melinda Taschetta-Millane
Treatment planning systems are at the heart of r...
Latest additions to Somatom go. CT platform address advanced clinical fields and applications, including cardiology, CT-guided intervention and dual energy CT. How to lower radiation dose from Computed tomography scanners using ned technology.

Latest additions to Somatom go. CT platform address advanced clinical fields and applications, including cardiology, CT-guided intervention and dual energy CT.

Feature | Computed Tomography (CT) | June 04, 2018 | By Melinda Taschetta-Millane
Recent studies show a rapid increase in patient radiation exposure mainly due to increased use of medical imaging, pa
Lung Decision Precision
News | Lung Cancer | June 04, 2018
For smokers and former smokers, the threat of lung cancer always lurks in the shadows.
Overlay Init