Subspecialties: Page 1136

Part I: Stroke imaging hones in on preventable infarction
By Eric Barnes
Our two-part series on acute stroke imaging presents current controversies in the field and the views of leading stroke researchers in neurology and radiology. Part I looks at image-guided treatment of at-risk brain tissue, patient selection, and study design.
February 20, 2008
2008 02 21 15 43 01 706
Accuracy of polyp measurements depends on CT values
By Eric Barnes
Polyps are most accurately measured at threshold values of approximately -500 HU, according to new Korean research that examined measurements at virtual colonoscopy. The study also found that the sizes of colorectal polyps varied significantly depending on the CT values used to define their contours.
February 20, 2008
Interventionalists: Proceed with caution for mechanical blood clot removal
By Edward Susman
The best predictor of a good recovery after an ischemic stroke is how successfully the patient can be revascularized, according to the results of a multicenter trial that looked at the correlation between restoration of blood flow and outcomes. Neurointerventionalist Dr. Christopher Zylak recently offered his take on the trial, and discussed how to get the best treatment outcomes for the patient.
February 18, 2008
AAPM offers report on CT radiation reduction
By AuntMinnie.com staff writers
The American Association of Physicists in Medicine (AAPM) has issued a CT radiation dose management report, which recommends standardized ways of reporting doses and educating users on the latest dose-reduction technology.
February 18, 2008
Siemens scores FDA OK for molecular system
By AuntMinnie.com staff writers
Siemens Medical Solutions has received U.S. Food and Drug Administration (FDA) clearance for its Versant 440 molecular system for use with Versant HCV RNA 3.0 assay for the management of patients with the hepatitis C virus (HCV) who are undergoing antiviral therapy.
February 18, 2008
Targeted renal therapy offers a solution to contrast allergic reactions
By Micheal Casasnovas
Radiologists aren't the only ones who must grapple with contrast-induced allergic reactions: Endovascular therapy specialists may see their choices for imaging exams limited by issues such as contrast-induced nephropathy and hypersensitivity to gadolinium, according to an imaging expert from Columbia University. But the use of targeted renal therapy may reduce the incidence of contrast-induced nephropathy.
February 18, 2008
Siemens gets FDA OK for zeego, partners with AFRL
By AuntMinnie.com staff writers
Siemens Medical Solutions' Artis zeego angiography system has received 510(k) clearance from the U.S. Food and Drug Administration (FDA).
February 17, 2008
MR-IMPACT trial: CMR equivalent to SPECT for stenosis detection
By Eric Barnes
In a prospective, randomized trial conducted at 18 sites internationally, MR first-pass myocardial perfusion imaging (perfusion-CMR) was at least equivalent to SPECT for detecting coronary artery stenosis, according to a new report in the European Heart Journal.
February 17, 2008
MR study reveals 'novel' findings on whiplash pathophysiology
By Shalmali Pal
Two years ago physical therapist James Elliott, Ph.D., and his co-authors conducted a study that pinpointed a connection between the chronic pain associated with whiplash and MR signs of fatty infiltrate in the cervical extensor muscles. In their latest work, they investigated the presence of fatty infiltrate in patients with nonwhiplash-related neck pain, and found that not all chronic neck pain is created equal.
February 14, 2008
2008 02 14 16 09 47 706
Study reinforces V/Q, PIOPED II guidelines for PE during pregnancy
By Cynthia E. Keen
The results of an analysis of ventilation/perfusion (V/Q) scans performed over a seven-year period reinforce the recommendations of the Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) II trial. The V/Q scan remains an excellent study to make or rule out the diagnosis of pulmonary embolism in pregnant women, according to researchers from Rhode Island.
February 14, 2008
Given wins Veterans Affairs contract
By AuntMinnie.com staff writers
Video-capsule endoscopy developer Given Imaging has secured a multiyear contract with the U.S. Department of Veterans Affairs National Acquisition Center, the company reported.
February 13, 2008
TomoTherapy posts strong Q4
By AuntMinnie.com staff writers
Record sales boosted radiation therapy firm TomoTherapy to a 32% revenue gain in its fourth quarter.
February 13, 2008
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