News | July 22, 2007

Telecom Techniques May Significantly Speed up CT Scans

Source: www.aapm.org

July 23, 2007 - By borrowing techniques used in telecommunications technology, computed tomography (CT) scanners may eventually see data collection speeds increase by hundreds of times, leading to better images, faster imaging procedures, and potentially lower X-ray exposures. A University of North Carolina team has pioneered a method that collects images from many sources at once, instead of the current serial method of data collection.

Modern CT scanners, widely used for diagnostic medical imaging and security screening, collect over 1,000 images in less than one second by high-speed rotation of an X-ray tube around the object. However, the data is collected in a serial fashion, essentially one piece of data at a time.

Multiplexing represents an innovative solution for potentially speeding up CT scans. A widely used concept in many communications-related fields, multiplexing is a process of combining multiple signals to form one composite signal for transmission. For the multiplexing CT scanner, multiple X-ray sources fire simultaneously to capture images from multiple views at the same time. In general, a factor of N/2 (N=total number of images) increase in the speed can be achieved using the multiplexing technique. For example, the speed of clinical CT scanners that acquire around 1,000 views per gantry rotation would increase by a factor of 500.

A team from the University of North Carolina, Chapel Hill, has been developing multiplexing CT scanners for several years. The team very recently created a 25-pixel multiplexing CT scanner, but engineering difficulties lie in front of the ultimate goal, a scanner with approximately 1,000 X-ray pixels. According to team leader Jian Zhang, the cost of these machines would not rise significantly, as new technology enables hundreds of X-ray cathodes to be fabricated on a single silicon wafer.

For more information: www.unc.edu, www.aapm.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...
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.
American Cancer Society Updates Colorectal Cancer Screening Guideline
News | Colonoscopy Systems | May 30, 2018
An updated American Cancer Society guideline says colorectal cancer screening should begin at age 45 for people at...
Overlay Init