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

62-year-old woman with pure ground-glass nodules (GGN). PET/CT fusion image shows pure GGN with tumor maximum standardized uptake value of 2.8 (circle).

62-year-old woman with pure ground-glass nodules (GGN). PET/CT fusion image shows pure GGN with tumor maximum standardized uptake value of 2.8 (circle).

News | PET-CT | November 15, 2019
November 15, 2019 — According to an article published ahead-of-print in the...
Image by Dr. Manuel González Reyes from Pixabay

Image by Dr. Manuel González Reyes from Pixabay 

News | SPECT Imaging | November 08, 2019
November 8, 2019 — Using ground-breaking technology, researchers at the...
Radiology: Cardiothoracic Imaging has published a special report on lung injury resulting from the use of electronic cigarettes (e-cigarettes), or “vaping.”

Image by Lindsay Fox from Pixabay

News | Computed Tomography (CT) | November 06, 2019
November 6, 2019 — Radiology: Cardiothoracic Imaging has published a special report on lung injury resulting
Carestream’s DT technology is an upgradable option on the DRX-Evolution Plus System

Carestream’s DT technology is an upgradable option on the DRX-Evolution Plus System.

News | Digital Radiography (DR) | November 04, 2019
November 4, 2019 – Carestream will introduce a three-dimensional extension of general radiography through its...
Harel Gadot

Harel Gadot, Founder, Executive Chairman and President at XACT Robotics says their system’s small footprint and high mobility design will enable care providers to treat a broad range of patient care needs.

News | Interventional Radiology | November 01, 2019
November 1, 2019 — XACT Robotics Ltd. announced that its firs
GE Healthcare OEC Elite CFD mobile C-arm with CMOS flat detector

GE Healthcare OEC Elite CFD mobile C-arm with CMOS flat detector

Sponsored Content | Case Study | Mobile C-Arms | October 30, 2019
This case study reports on the outcomes achieved with GE Healthcare...
Iodine-based CT contrast ready for scanning with a Canon Aquilion One 320-slice CT system at Northwestern Medicine Central DuPage Hospital in the Chicago suburbs.

Iodine-based CT contrast ready for scanning with a Canon Aquilion One 320-slice CT system at Northwestern Medicine Central DuPage Hospital in the Chicago suburbs.

Feature | Radiology Imaging | October 30, 2019 | By Dave Fornell
Iodine-based contrast agents used in c

Image courtesy of Philips Healthcare

Feature | Computed Tomography (CT) | October 30, 2019 | By Dave Fornell
There were several interesting new trends in cardi...
LungPrint Discovery offers fully automatic radiological metrics and unique, time-saving airway visualizations
News | Advanced Visualization | October 29, 2019
October 29, 2019 — VIDA Diagnostics, Inc.