Latest X-ray computed tomography Stories

A recent study shows that pelvic imaging using computed tomography (CT) examinations are not necessary for diagnosing patients with venous thromboembolism (VTE) and eliminating this exam can significantly reduce a patient's exposure to excessive radiation dose.CT venography of the pelvis during CT pulmonary angiography does not improve the detection of VTE, says Dr. Charbel Ishak, lead author for this study. He asserts, "Using CT venography in the lower extremities without including the...

With the high prevalence of drug abuse and trafficking in major cities throughout the world, one new study shows how advanced CT with 3D scanning can help radiologists better identify ingested or hidden contraband items more effectively.These advanced imaging techniques can help law enforcement officers fight international drug trafficking, identify medical complications caused by ingested drug packets, and reduce contraband smuggling within the penal system, said Dr. Barry Daly, lead...

Proton radiography imaging used prior to and during proton treatments for pediatric cancer patients provides for more accurate treatment delivery and a lower dose of radiation compared to standard diagnostic X-rays and cone beam CT, according to a study presented today at the Cancer Imaging and Radiation Therapy Symposium in Atlanta. The symposium is co-sponsored by the American Society for Radiation Oncology (ASTRO) and the Radiological Society of North America (RSNA).The amount of radiation...

3D models, produced by combining a patient's CT scans and 3D printing technology are proving useful in neurosurgical planning.3D printing technology is a fast and affordable way to build 3D models for neurosurgical planning. Radiologists are able to transform ultra high-resolution CT patient images into 3D solid models using a 3D color printer commonly used in architecture, engineering and construction.An advantage of 3-D models is that they identify defects that 2-D images do not, which...

Scientists are reporting development of a process for producing large quantities of a much-needed new imaging agent for computed tomography (CT) scans in heart disease, breast cancer and other diseases, and the first evidence that the material is safe for clinical use. The imaging agent is a tantalum oxide nanoparticle, which is inexpensive, and stays in the body long enough to image many different organs. The report appears in the Journal of the American Chemical Society.Taeghwan Hyeon,...

CRAWLEY, England, April 27, 2011 /PRNewswire/ -- As image guided radiation therapy (IGRT) techniques have enhanced radiotherapy precision, Elekta continues working to decrease treatment session times through automated IGRT tools. Odense University Hospital (OUH, Odense, Denmark) clinicians are the first in the world to use a 3D seed matching feature of Elekta's Intuity(TM) IGRT package. The software quickly and automatically pinpoints the position of gold seeds that doctors implant in the...

The idea of probing the body's interior with radiation stretches back to experiments with X rays in the 1800s, but more than a century later, images taken with radiological scans still are not considered reliable enough to, for example, serve as the sole indicator of the efficacy of a cancer treatment. Lisa Karam, a biochemist at the National Institute of Standards and Technology (NIST) and a few dozen of her colleagues across North America have set out to change that.The group of radiology...

By: Rhonda Craig, Ivanhoe Health CorrespondentORLANDO, Fla. (Ivanhoe Newswire) -- A blood test could help more accurately detect lung cancer in non-smokers. The research was presented at the American Association for Cancer Research 102nd Annual Meeting in Orlando this week.Lung cancer is the most common cause of cancer-related death in men and women in the U.S. This year, more than 210,000 Americans will be diagnosed with the disease, and up to 20 percent of them will have never smoked....

A research team at the Queen Silvia Children's Hospital has developed a method that allows the lowest possible dose of radiation for children having a CT scan while still obtaining good image quality, reveals a thesis from the Sahlgrenska Academy.Computed tomography (CT) is an advanced form of X-ray examination which generates images that are extremely detailed and very useful in diagnosing patients. If the dose of radiation is lowered too far, however, the scans become blurred and there is a...

The number of children receiving computed tomography (CT) scans in emergency rooms is on the rise, according to a study published online and in the June print edition of Radiology. These extra tests may expose children to adult-sized radiation doses and potential risks for cancer down the road. To study CT utilization trends in children, Dr. Larson and colleagues from the Cincinnati Children's Hospital Medical Center used data frm the National Hospital Ambulatory Medical Care Survey from 1995...