Lower tube voltage leads to reduced dose in pediatric CT June 14, 2007 -- SAN FRANCISCO - Radiation dose can be reduced in pediatric CT imaging without compromising image quality by using lower tube voltages, according to CT pioneer Willi Kalender, Ph.D. Dose could potentially be reduced even further if manufacturers tweaked their systems to enable them to scan at lower energies than those commonly used now, he said at yesterday's sessions of Stanford University's International Symposium on Multidetector-Row CT.
Presurgical fMRI for tumor resection: Are we there yet? May 21, 2007 -- BERLIN - In theory, functional MRI offers the ultimate noninvasive, presurgical management tool for brain tumor resection. In practice, fMRI techniques have a way to go before they can be as accurate as intraoperative cortical stimulation (ICS), according to Dr. Stefan Sunaert, Ph.D., from the University Hospital of the Catholic University of Leuven in Belgium. Sunaert discussed some of the strengths and weaknesses of fMRI for brain tumor mapping in a talk Sunday at the International Society for Magnetic Resonance in Medicine (ISMRM) meeting.
Two-segment CTA reconstruction aids images, not accuracy May 21, 2007 -- For patients with faster heart rates, the use of two-segment reconstruction improves image quality at 64-slice coronary CT angiography (CTA), according to a study from Germany. Among all patients, however, accuracy was not improved using two-segment when compared to single-segment reconstruction.
MRI keeps pace with rapidly evolving musculoskeletal systems of young athletes May 20, 2007 -- BERLIN - About 35 million kids in the U.S. participate in organized or recreational sports. In general, they concentrate on one sport and train at accelerated levels, resulting in overuse and repetitive stress injuries that are compounded by the delicate nature of a growing musculoskeletal system. At the 2007 International Society for Magnetic Resonance in Medicine (ISMRM) meeting on Saturday, two presentations focused on pediatric sports injuries and typical MR signs of various chronic musculoskeletal issues.
CT finds high-risk plaque with nanoparticle contrast May 11, 2007 -- A new animal study by researchers in the U.S. and France brings intriguing new possibilities to CT with its use of a nanoparticulate contrast agent administered before scanning to detect unstable atherosclerotic plaques. The group aims to someday detect human plaques at the greatest risk of rupture while there is time to prevent it.
MDCT catches stenoses up to 4 mm in large coronary vessels May 9, 2007 -- Using a 75% threshold, Japanese and U.S. investigators found that 64-slice multidetector-row CT (MDCT) could accurately diagnose coronary artery stenosis, according to a presentation at the 2007 American College of Cardiology (ACC) meeting in New Orleans.
Optimized barium, easier prep improve VC experience April 18, 2007 -- Some see virtual colonoscopy combined with a gentler bowel prep as an important way to get patients to undergo colon cancer screening. And unlike conventional colonoscopy, VC is in a position to make things easier for the patient. Studies are experimenting with gentler regimens that produce less discomfort and mark the residual stool. Recently, researchers tried to find the optimal formula for reduced-prep VC.
Multivendor digital mammo project makes mark in Germany April 16, 2007 -- Digital mammography is often deployed in a heterogeneous IT environment with different developers' RIS, PACS, and archive products interacting with the modality, presenting a host of integration concerns. A group of information systems administrators in Germany recently faced the challenge of bringing CR mammography online and discovered that successfully assimilating the modality into the enterprise is not just an issue of interfacing the technology.
Norwegian teleradiology project overcomes technical, political hurdles April 11, 2007 -- Steering information from disparate RIS and PACS products throughout an enterprise has historically presented a challenge for IT system administrators: it can be done, it just hasn't been easy. One country that has tackled the challenge is Norway. In 2003, the regional health authority of western Norway initiated a teleradiology project to improve the retrieval of radiology exams across the entire region. In the process, both management and technology hurdles were overcome.