Clinical News: Page 2856

3D penetrates trauma imaging niche
By Cynthia E. Keen
The use of 3D imaging in trauma applications is escalating rapidly, helping to improve the process of surgical planning, and in some cases eliminating or reducing the extent of invasive surgeries. The technology is also stimulating face-to-face collaboration between radiologists and surgeons.
August 23, 2006
Barriers still hinder lung CAD adoption
By Eric Barnes
A decade into the game, lung CAD appears to work well enough to be considered a serious tool for screening CT lung data. Several studies have shown gains in detecting clinically significant nodules. So why don't more radiologists use CAD in daily practice? There are many reasons, but most revolve around workflow and practice issues rather than the efficacy of CAD itself.
August 23, 2006
Virtual colonoscopy fly-through with visualization tool
Video shows a fly-through from the cecum to the rectum with an unseen areas visualization tool turned on. The radiologist's eye is drawn to the areas in red indicating portions of the colonic surface that have not been visualized.
August 22, 2006
Elekta gets FDA nod
By AuntMinnie.com staff writers
Swedish radiation therapy firm Elekta has received U.S. Food and Drug Administration (FDA) 510(k) clearance for its Gamma Knife Perfexion stereotactic radiosurgery system.
August 22, 2006
Fischer sells remaining businesses, files Chapter 11
By AuntMinnie.com staff writers
Fischer Imaging of Denver said that it has signed a definitive agreement to sell its radiology, electrophysiology, and surgical (RE&S) business to contract manufacturer Byers Peak of Wheat Ridge, CO.
August 22, 2006
Ovarian metastasis shows distinct CT features in stomach versus colon cancer
By Shalmali Pal
Most nongenital cancers that spread to the ovaries originate in the gastrointestinal tract. Making the distinction between primary and metastatic ovarian tumors is essential for proper patient care, according to a study in the September issue of the American Journal of Roentgenology.
August 22, 2006
2006 08 22 15 54 35 706
Study pits CT against MRI for virtual colonoscopy
By Eric Barnes
MR colonography offers the promise of radiation-free colorectal exams, excellent soft-tissue contrast, and contrast agents with a better safety profile. But in a polyp-to-polyp face-off in a phantom study, researchers in Germany found that CT colonography (or virtual colonoscopy) still had a sensitivity edge, especially at normal dose levels.
August 22, 2006
False negative for mammography resolved by tomosynthesis
This woman had her regular screening mammogram, which was rated as BI-RADS 1, or normal.

Some weeks later she returned because of a palpable lump in her breast. Ultrasound detected this lump and was determined through biopsy to be DCIS. Her mammogram was retrospectively reviewed and the cancer was deemed to be mammographically occult.

On review of the tomosynthesis image, taken at the same time as the mammogram, the cancer can be clearly seen near the skin line above the nipple.

This image is from a technology that is a work-in-progress and that does not have regulatory approval in certain global markets.
August 21, 2006
False positive for mammography resolved by tomosynthesis
An object on a conventional digital mammogram was highly suspicious for malignancy. The structure was seen in both the MLO and CC views, and persisted on the multiple diagnostic mammograms. The patient underwent biopsy and the structure was benign.

If you look at the corresponding tomosynthesis images, you see nothing malignant. The structure seen in the conventional mammogram was the result of overlapping tissues. Diagnosis was given as superimposed parenchyma.

At another height in the breast, a series of calcifications can be seen in the tomosynthesis cine loop. Because of the 3D nature of the tomosynthesis images, these are known to be within a few millimeters of the skin’s surface.

This image is from a technology that is a work-in-progress and that does not have regulatory approval in certain global markets.
August 21, 2006
Cook reaches Celect milestone
By AuntMinnie.com staff writers
Interventional firm Cook said that a Canadian radiologist has performed the first human implantation of its Celect vena cava filter in North America.
August 21, 2006
Sonora adds training class
By AuntMinnie.com staff writers
Sonora Medical Systems has launched an ultrasound service training class for Philips Medical Systems' iU22 and iE33 ultrasound scanners. The inaugural course will run November 6-8, according to the Longmont, CO-based firm.
August 21, 2006
GE touts ultrasound growth
By AuntMinnie.com staff writers
GE Healthcare said that its global ultrasound business produced sales of $671 million in the first half of 2006, up 15% compared with the first half of 2005.
August 21, 2006
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