CT: Page 385

Protocol tops scanner model in determining CTA dose

A study in the May American Journal of Roentgenology compared three CT scanners at coronary CT angiography (CTA). The results showed that protocols were more important than scanner model in determining dose, with effective dose reductions of 40% to 50% achieved by reducing tube current from 120 to 100 kV.

May 4, 2011

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3D CT printing simplifies neurosurgical planning

For planning neurosurgery with CT images, radiologists in Hawaii have begun using automated 3D models to provide surgeons and patients with information that can't be replicated on a flat computer monitor. A demonstration project this week at the American Roentgen Ray Society meeting is showing how it's done.

May 3, 2011

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Does radiation dose education affect CT ordering practices?

By Kate Madden Yee

CHICAGO - Educating clinical house staff about CT radiation does not necessarily change ordering patterns for the exam, according to research presented Monday at the American Roentgen Ray Society meeting. But it does give clinicians information they can share with patients concerned about radiation dose.

May 2, 2011

Low risk to fetus seen in most CT scans

You don't necessarily need to rule out CT scans of pregnant patients if appropriate precautions are taken, according to a study in the May issue of the American Journal of Roentgenology. The study found that fetal radiation dose is generally low and has been dropping with newer generations of scanners.

May 1, 2011

Radiologists draw inspiration from athletes at Winter Olympics

By Rosemary Frei

VANCOUVER - Radiologists working at an Olympic Games don't have to hurl themselves down icy, twisting slopes. But they do have to be at the top of their game and use the best equipment to perform high volumes of imaging and diagnoses under pressure every day.

May 1, 2011

FDG-PET/CT defines head, neck tumors

By AuntMinnie.com staff writers

Combining CT with FDG-PET can significantly enhance the outline of tumors in head and neck cancer patients and influence treatment options compared to CT alone, according to research presented Friday at the Cancer Imaging and Radiation Therapy Symposium in Atlanta.

April 28, 2011

Researchers suggest caution with contrast use in women

Women undergoing conventional angiography have a 62% higher risk of kidney problems after contrast than a demographically similar group of men, researchers found in an analysis of more than 1,000 patients that will be presented at the National Kidney Foundation's Spring Clinical Meetings this week in Las Vegas.

April 27, 2011

Automated exposure control software lowers ped CT dose

By Cynthia E. Keen

When performing pediatric CT scans, the use of automated exposure control combined with dose modulation can reduce radiation dose exposure by up to 30%, according to a study published March 8 in Academic Radiology.

April 27, 2011

VC ready for universal use, meta-analysis shows

In a meta-analysis of more than 10,000 patients scanned on five continents, virtual colonoscopy detected almost 95% of colorectal cancers -- and 100% when proper tagging and cleansing methods were used, according to a study published in the May edition of Radiology.

April 26, 2011

MRI still no match for CT in cystic fibrosis

The key imaging components of cystic fibrosis of the lungs are bronchiectasis and air trapping. For evaluating both, CT remains far and away the superior imaging modality despite radiation concerns, and despite recent improvements in MRI techniques, according to a study from Italy and the Netherlands.

April 25, 2011

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U.S. legislation would set up lung screening program

Democrats and Republicans have joined forces to introduce the Lung Cancer Mortality Reduction Act of 2011, legislation that would include the launch of a pilot lung screening program.

April 21, 2011

HHS: Medicare overpaid for emergency imaging

By Kate Madden Yee

Medicare paid a total of $38 million in 2008 for erroneous claims for the interpretation of CT, MRI, and x-ray studies performed at hospital emergency departments, according to a report posted this week by the U.S. Department of Health and Human Services' (HHS) Office of Inspector General.

April 20, 2011

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