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

Houston Methodist Hospital Enters Multi-Year Technology and Research Agreement With Siemens Healthineers
News | Imaging | August 17, 2017
Houston Methodist Hospital and Siemens Healthineers have entered into a multi-year agreement to bring cutting-edge...
Four Blue Cross Blue Shield Companies Issue Positive Medical Policies on HeartFlow FFRct Analysis
News | Computed Tomography (CT) | August 09, 2017
HeartFlow Inc. announced that four Blue Cross Blue Shield companies have each issued a positive medical policy for the...
The American Lung Association created LUNG FORCE, a national movement to defeat lung cancer
News | Lung Cancer | August 02, 2017
To raise public awareness of lung cancer—the leading cancer killer of men and women—the American Lung Association's...
GE’s DoseWatch is a digital informatics solution that automatically collects, monitors and reports on radiation dose indices for diagnostic imaging exams
News | Radiation Dose Management | July 31, 2017
GE Healthcare announced that it has licensed computed tomography (CT) organ dosimetry technology developed at Duke...
Contrast Media from Bayer, trends in contrast media and developments in contrast media
Feature | Contrast Media | July 28, 2017 | By Dave Fornell
Here are several updates in medical imaging ...
New York Hospital Finds Significant Cost Savings With Toshiba’s Aquilion One CT
News | Computed Tomography (CT) | July 25, 2017
In five years, Kaleida Health’s Stroke Care Center (SCC) at the Gates Vascular Institute in Buffalo, N.Y., has realized...
Samsung Introduces FDA-Cleared BodyTom Elite CT Scanner
Technology | Computed Tomography (CT) | July 24, 2017
Samsung announced U.S. Food and Drug Administration (FDA) approval of the BodyTom Elite, an upgraded version of its...
Sponsored Content | Videos | CT Angiography (CTA) | July 21, 2017
DAIC and ITN Editor Dave Fornell discusses some of the most innovative new computed tomography (CT) technology and tr
ACR Updates Radiation Oncology and Medical Physics Guidance With ASTRO and AAPM
News | Radiation Dose Management | July 19, 2017
July 19, 2017 — The American College of Radiology (ACR) recently collaborated with professional medical societies to
Sponsored Content | Videos | CT Angiography (CTA) | July 19, 2017
Matthew Budoff, M.D., FACC, professor of medicine, David Geffen School of Medicine at UCLA, endowed chair of preventi
Overlay Init