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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.
Radiology still looms large in ECRI's top 10 hazards
November 5, 2013 -- Medical radiation no longer tops the top 10 list of technology hazards published each year by the ECRI Institute. That dubious honor, for the second year in a row, goes to those beeping, buzzing, distracting, infuriating, wolf-crying alarms that are becoming ubiquitous throughout healthcare.
Noninvasive FFR-CT equals cardiac cath for stenosis assessment
November 4, 2013 -- SAN FRANCISCO - A software technique that analyzes CT data performed as well as invasive fractional flow reserve (FFR) for detecting ischemia, offering a potentially better and cheaper way to evaluate patients with suspected coronary artery disease, according to a presentation at the Transcatheter Cardiovascular Therapeutics meeting.
Stress cardiac MR matches 320-row CCTA results
November 1, 2013 -- Vasodilator stress cardiac MR and 320-detector-row coronary CT angiography (CCTA) both accurately detect obstructive coronary artery disease, and the two tests are also highly concordant, according to the results of a new study in the International Journal of Cardiovascular Imaging.
Dubai Hospital reduces CT patient dose through monitoring
October 31, 2013 -- Faced with a doubling of CT volume in their healthcare system over the past five years, researchers from Dubai Hospital used a program of continuous monitoring and action to substantially reduce radiation dose to adult and pediatric patients undergoing common CT exams.
Winners of 2013 Minnies highlight CT's resilience
October 30, 2013 -- CT remains the workhorse medical imaging technology that's still making headlines some four decades after Sir Godfrey Hounsfield figured out a way to put EMI's Beatles royalties to work. This is nowhere more evident than in this year's Minnies awards, where candidates related to CT won many of the categories.
Study: CT shows promise as a breast density assessment tool
October 24, 2013 -- Breast density readings taken at CT are consistent with those acquired at mammography, according to a new study published online in Radiology. The modality could provide a readily available and more uniform option for assessing a woman's breast cancer risk, the researchers concluded.
Emergency docs want decision support to tackle CT overuse
October 21, 2013 -- Generating roughly one-third of all CT scans, the emergency department would seem a key target for imaging decision-support software. And emergency physicians would welcome the technology, if research from Washington University School of Medicine is any indication.
MBIR halves CT dose in children, outperforming ASIR
October 14, 2013 -- In one of the first studies to evaluate advanced CT iterative reconstruction techniques in children, researchers found that model-based iterative reconstruction (MBIR) can halve pediatric CT radiation dose, delivering images of equal or better quality than standard-dose exams and outperforming first-generation IR software, according to a new article in Radiology.
No bones about it: Subtraction CTA uncovers cerebral aneurysms
September 12, 2013 -- Yielding high sensitivity and accuracy, an advanced visualization technique that automatically subtracts bone data from 320-detector-row CT angiography (CTA) scans could substitute for 3D digital subtraction angiography in detecting cerebral aneurysms, according to research published online in Radiology.
FDA panel mostly likes evidence on CTC efficacy
September 10, 2013 -- In a wide-ranging session on CT colonography (CTC), held in Silver Spring, MD, on Monday, a panel of experts convened by the U.S. Food and Drug Administration delivered almost universally positive views of the evidence supporting the use of the exam for colorectal cancer screening.
NEJM: Studies take aim at easing CT lung screening follow-up
September 9, 2013 -- The results of two lung cancer screening studies published in the New England Journal of Medicine are good news for CT lung cancer screening, showing the ability to differentiate malignant from benign nodules for many patients before invasive biopsy procedures are considered.
FDA sets meeting to review CT colonography
September 6, 2013 -- A virtual who's who of CT colonography (CTC) is en route to the Washington, DC, area for a September 9 joint committee meeting of the U.S. Food and Drug Administration that will discuss the fate of CTC screening for asymptomatic individuals.
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