Eric Barnes

Digital X-Ray
JAMA study finds wide variation in cardiac CTA dose
Coronary CT angiography (CTA) providers are failing to protect their patients from high radiation dose -- with dose levels varying widely between facilities, according to a new multinational study in the Journal of the American Medical Association.
February 2, 2009
Digital X-Ray
AHA science advisory warns about cardiac imaging dose
An American Heart Association (AHA) report in the current issue of Circulation offers new recommendations for cardiac imaging that uses ionizing radiation, including coronary CT angiography (CTA). The new science advisory states that coronary CTA use should be restricted due to uncertainty regarding the health effects of the radiation delivered by the exam.
February 2, 2009
CT
Confocal microscopy could reduce polypectomies
Optical colonoscopy could become safer, and polypectomies fewer, with the advent of a supermagnifying endoscope that can distinguish between benign hyperplastic lesions and potentially dangerous adenomas without removing them from the patient.
January 29, 2009
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CT
Interobserver variability generally low at lung screening follow-up
Radiologists who perform CT follow-up screening of smokers generally agree on whether a nodule has grown at follow-up and whether the case should be considered positive or negative, according to a study of subjects screened twice in the National Lung Screening Trial. But there was less agreement on what should be done with the results.
January 27, 2009
CT
Absolute calcium score better predictor than age-, sex-, race-adjusted scores
For assessing the risk of coronary events, the absolute calcium score is a far better predictor of adverse coronary events than an adjusted score based on mean values of the patient's particular demographic group.
January 22, 2009
CT
Adding delayed CT aids some trauma diagnoses
In the emergency setting, would the routine acquisition of a delayed scan five minutes after contrast lead to better diagnoses of trauma patients? It pays sometimes but not always to acquire the extra scan, say researchers from Italy, who reviewed images from hundreds of cases of organ injuries.
January 20, 2009
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CT
Need for VC colon screening trumps physician turf battles
SAN FRANCISCO - Virtual colonoscopy is safe and cost-effective and should be implemented for widespread colorectal cancer screening despite the inevitable turf struggles that arise between physician subspecialties, according to the radiologist who led the multicenter National CT Colonography Trial.
January 19, 2009
Ultrasound
Ultrasound screens for pancreatic cancer in high-risk populations
SAN FRANCISCO - Ultrasound detected small pancreatic cancers even CT and MRI couldn't visualize in a novel Dutch screening program aimed at high-risk patients with a family history of the disease. The researchers hope to transform their pilot study into a multicenter trial aimed at finding pancreatic cancer in high-risk patients while it's still resectable.
January 18, 2009
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CT
MR colonography separates benign from malignant colonic strictures
Dynamic contrast-enhanced MR colonography can readily distinguish benign from malignant strictures of the colon, according to Danish researchers. They said the technique could solve a diagnostic dilemma in patients with suspected colorectal cancer lesions that prevent them from undergoing conventional colonoscopy before surgery.
January 15, 2009
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CT
Study warns VC could leave high-risk polyps unresected
Researchers who analyzed a large database of resected colon polyps concluded that the American College of Radiology's policy of ignoring diminutive polyps detected at virtual colonoscopy could lead to as many as 30% of patients with "high-risk findings" being read as normal on VC exams.
January 13, 2009
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