Virtual colonoscopy beginners do better with 3D data February 5, 2009 -- Novice virtual colonoscopy readers detect more polyps reading 3D endoluminal datasets of electronically cleansed data compared to 2D images. But experienced readers aren't daunted by either 2D datasets or fecal residues, turning in a similar performance regardless of the reading environment.
JAMA study finds wide variation in cardiac CTA dose February 3, 2009 -- 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.
CAD can boost double-reading detection rate January 22, 2009 -- Computer-aided detection (CAD) technology may yield breast cancer detection improvements in an independent double-reading mammography screening practice, according to a research team led by Dr. Per Skaane, Ph.D., of Ullevål University Hospital in Oslo, Norway.
Adding delayed CT aids some trauma diagnoses January 21, 2009 -- 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.
Ultrasound screens for pancreatic cancer in high-risk populations January 19, 2009 -- 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.
MR colonography separates benign from malignant colonic strictures January 16, 2009 -- 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.
MRI beats PET for myocardial evaluation in patients with impaired LV function January 9, 2009 -- While MRI is known to detect more myocardial scarring than PET in patients with occlusive coronary artery disease, a new study suggests that contrast-enhanced MRI can make a critical difference in treatment planning for revascularization candidates with severely impaired left ventricular (LV) function.
Study calculates radiation dose risk for infants in Belgian NICU January 8, 2009 -- A Belgian study has shed additional light on the amount of radiation dose delivered to infants in neonatal intensive care units (NICUs). The research provides reference values for NICU radiation dose, and also offers guidance on collecting dose measurements and converting them into organ-dose values.
PET-based F-18 FLT equivocal for leukemia imaging January 7, 2009 -- Researchers in Germany and the U.S. hoped that switching radiopharmaceuticals from FDG might improve PET's performance for imaging leukemia. While they found some benefits to using the new tracer, they also discovered some shortcomings.