Study finds overdiagnosis in CT lung screening December 10, 2013 -- A new analysis of National Lung Screening Trial data has found that as many as one-fifth of all lung cancer diagnoses may represent overdiagnosis -- that is, detection of indolent or slow-growing lung cancers that may never have harmed the patient, according to a report in JAMA Internal Medicine.
Wide-area CT delivers modest drop in pediatric dose December 6, 2013 -- CHICAGO - Wide-area CT reduced torso radiation doses significantly in younger, smaller children, but the reductions were insignificant among larger and older patients, according to results of a study presented on Thursday at the RSNA meeting in Chicago.
Calcium scores rise and fall based on scanner vendor December 3, 2013 -- CHICAGO - What's your coronary calcium score? The answer may well depend on who made your CT scanner, according to a Monday session at RSNA 2013. Dutch researchers who scanned cadaver hearts were surprised to see up to a 25% difference in scores, depending on which scanner was reporting the results.
Study finds positive radiation dose trends in Iran November 28, 2013 -- A study of occupational radiation dose and errors in film badge use by CT staff at a university hospital in Iran found that radiation exposure remained low and errors declined over a 20-year period, despite an annual increase in the number of patients undergoing scans.
CORE320: CTA-CTP matches SPECT for gauging cardiac disease November 27, 2013 -- The accuracy of 320-detector-row coronary CT angiography (CTA) combined with CT perfusion (CTP) is equivalent to that of SPECT myocardial perfusion for diagnosing functionally significant coronary artery disease, according to results of the prospective, multicenter, international CORE320 trial published in the European Heart Journal.
High-pitch CTPA outperforms standard PE protocol November 22, 2013 -- In patients with suspected pulmonary embolism (PE), a CT pulmonary angiography (CTPA) protocol using high-pitch dual-source electrocardiogram-synchronized helical scanning outperformed standard pulmonary CTA by almost every measure, according to an article in the American Journal of Roentgenology.
Dinosaur vertebra fossil rises up in 3D from CT data November 21, 2013 -- Noninvasive imaging techniques have long proved valuable for digging up the stories of fossils without damaging them. In a new study published online in Radiology, German researchers have gone a step further, making a carbon copy of a dinosaur vertebra using CT data and 3D printing.
Noncathartic CTC prep might boost screening compliance November 21, 2013 -- The use of noncathartic bowel preparation before CT colonography (CTC) delivers good sensitivity for clinically significant polyps, and may also increase colorectal cancer screening compliance, according to a report in the American Journal of Roentgenology.
JACR: How inappropriate is CT use, really? November 13, 2013 -- It's true that some proportion of patients is exposed to large numbers of CT scans. But the characteristics of these patients and their doctors are consistent with reasonable medical decision-making, according to new research published online in the Journal of the American College of Radiology.
Iterative recon delivers quality CCTA at well under 1 mSv November 11, 2013 -- Researchers from China and the U.S. have succeeded in producing ultralow-dose coronary CT angiography (CCTA) exams in a wide range of patients using iterative reconstruction. In the process, they've helped redefine low-dose CCTA to mean far less than 1 mSv in all patients, according to study results published in JACC Cardiovascular Imaging.