Advanced Visualization: Page 124

Swedes want to perform VC, but many lack equipment, training

Less than a quarter of Sweden's radiology departments perform virtual colonoscopy, but not for lack of interest in the procedure, a new study finds. Rather, the lack of multidetector CT scanners and training opportunities were the top reasons for not performing VC.

May 7, 2006

VC CAD helps junior readers catch up

Virtual colonoscopy computer-aided detection (CAD) can improve sensitivity for polyp detection, especially for the inexperienced reader, according to a study from Paris.

May 3, 2006

2006 05 04 11 26 24 706

No long-term rise in colon cancer for ulcerative colitis patients

By Reuters Health

NEW YORK (Reuters Health), May 1 - The incidence of colorectal cancer (CRC) remains constant in ulcerative colitis (UC) patients up to 40 years of disease duration, a new study from the U.K. shows.

April 30, 2006

Colon CAD: VC's extra eyes face new challenges

Prototype colon CAD systems are proliferating, and thanks to years of painstaking development work they're doing a pretty good job, outperforming all but the best radiologists in the detection of colonic lesions. VC CAD expert Dr. Hiro Yoshida from Harvard Medical School in Boston discusses the major innovations that have produced today's complex CAD systems, and the moving target CAD developers face in keeping up with new performance standards.

August 4, 2005

2005 08 01 13 52 32 706

Model saves time, radiation by simulating anatomic changes during radiotherapy

Organs and tumors can twist, turn, and deform substantially during radiotherapy, creating a moving target for treatment planners seeking to avoid irradiating normal tissue. One solution, a full CT scan before each treatment, is both time- and radiation-intensive. But what if doctors could simply "update" the pretreatment scan with a few newly acquired planar projection images? Researchers from Virginia built and tested a model to do just that.

July 24, 2005

2005 07 20 09 33 18 706

Interventionalists see safer RFA with coregistered laparoscopic US, CT

BERLIN - Percutaneous radiofrequency ablation (RFA) and other minimally invasive interventions have become increasingly popular. But the interventionalists who perform them often end up working in the dark, as the CT or MR image they've placed across the room bears little resemblance to the laparoscopic ultrasound images used to guide the RFA needle. Researchers may have found a solution, according to a presentation at the Computer Assisted Radiology and Surgery (CARS) meeting.

June 26, 2005

2005 06 27 09 58 11 706

3D diminution index spots lung nodules attached to blood vessels

BERLIN - A principal limitation of lung cancer imaging is the difficulty of distinguishing lung nodules attached to blood vessels from normal blood vessels, especially in CT data. But researchers from Japan have developed a 3D feature called the diminution index, which scans the CT pulmonary blood vessel data for signs of rapidly expanding shapes that can indicate a nodule rather than a blood vessel.

June 26, 2005

2005 06 24 16 26 44 706

4D MRI enables blood-velocity measurement in mitral valve insufficiency

BERLIN - Mitral valve insufficiency is a fairly common heart problem that lacks ideal imaging solutions. The problem lies in assessing regurgitant blood flow to determine the need for intervention. A presentation Thursday at the Computer Assisted Radiology and Surgery (CARS) meeting discussed the limitations in assessing blood flow, and highlighted a new measurement approach using time-resolved MRI vector fields.

June 23, 2005

2005 06 23 15 59 46 706

CARS suite of the future sees key role for image-guided intervention

BERLIN - In Wednesday's opening session of the 19th International Congress of Computer Assisted Radiology and Surgery (CARS), Dr. Michael Vannier set forth his vision of the interventional suite of the future, and touched on the powerful forces shaping its development.

June 22, 2005

2005 06 22 17 19 32 706

Radiology workstations need integration, automation

By Erik L. Ridley

SAN ANTONIO - Diagnostic radiology workstations have come a long way from the early days of PACS. But further progress can still be made, said Dr. Steven Horii in a presentation at the "PACS 2002: Implementing CR/DR and Integrating the Healthcare Enterprise" conference.

March 14, 2002

Researchers take aim at next-generation image-guided surgery systems

Just as virtual guided imaging is beginning to pay off in diagnostics, a group of techno-wizards have taken aim at the next goal: putting powerful, intuitive, real-time image guidance systems into surgeons' hands.

July 16, 2000

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