CT Digital Community
Big spectral CT project launches in New Zealand
September 22, 2014 -- You've heard of dual-energy CT, but how about eight-energy CT? That's the goal of researchers in New Zealand, who this month received funding for a project to build a CT scanner capable of detecting eight different energies at once in scans of humans. They hope the new spectral scanner will offer functional imaging that is unprecedented for CT, with a lower radiation dose to boot.
Ultrasound should be 1st choice for suspected kidney stones
September 18, 2014 -- Ultrasound should still be the first imaging test of choice for evaluating patients with suspected nephrolithiasis, according to research published in this week's issue of the New England Journal of Medicine. The study found that using CT first didn't yield better clinical outcomes.
ICR: Survey reveals major knowledge gaps on radiation dose
September 15, 2014 -- DUBAI - The lack of knowledge among medical staff about radiation dose -- specifically for CT scans -- remains a serious concern, and patients still receive very little information about the pros and cons of scans, according to a survey presented at the International Congress of Radiology (ICR).
Perfusion CT's great potential remains unrealized
September 15, 2014 -- Challenges remain on the road to more precise assessment of tumor treatment response with CT perfusion, but the techniques are already robust and far more sensitive than the old methods based on tumor size. In this emerging field, tumor biology and treatment response combine to make CT an ideal modality for monitoring cancer treatment, according to Boston researchers.
New studies of Egypt's mummies rest on government go-ahead
September 12, 2014 -- DUBAI - Imaging investigations of ancient Egypt's royal mummies may start again in the near future, but this depends on getting the all-important green light from the country's senior politicians, according to the head of the medical team that has conducted previous examinations.
Mich. researchers hope to revamp lung CT image processing
September 12, 2014 -- A new study at the University of Michigan aims to speed up image processing for low-dose CT lung cancer scans in the hopes of reducing reconstruction times to just a few minutes, which should result in lower radiation doses to patients.
CT contrast not tied to poor outcomes, even in at-risk patients
September 9, 2014 -- The use of intravenous contrast before CT imaging is safe for most patients, according to a large study published online on Tuesday in Radiology. Researchers from the Mayo Clinic in Rochester, MN, found no difference in complication rates between patients who received contrast and those who did not.
NLST: CT lung screening more effective for older smokers
September 8, 2014 -- A new analysis of data from the National Lung Screening Trial (NLST) has found that CT lung cancer screening is more effective for older smokers than younger ones. The study, published online Tuesday in the Annals of Internal Medicine, is sure to shape the roiling debate over whether Medicare should pay for CT lung screening.
Study finds CT lung cancer screening highly cost-effective
September 2, 2014 -- CT lung cancer screening is cost-effective in the Medicare-aged population, concludes a new study published in American Health and Drug Benefits that was tailored specifically to older individuals undergoing lung cancer screening with CT. Proponents of the exam hope it will add impetus to efforts to win Medicare reimbursement.
CAC best predicts heart disease in kidney patients
September 2, 2014 -- Coronary artery calcium (CAC) as calculated from CT scans was by far the best predictor of cardiovascular disease in individuals with chronic kidney disease, just as it is in the population at large, concludes a new study in the Journal of the American Society of Nephrology.
ACR cries foul as DNA test beats CTC to Medicare approval
August 28, 2014 -- The American College of Radiology (ACR) is crying foul after the U.S. Centers for Medicare and Medicaid Services recently approved a stool DNA test for colorectal cancer screening -- as reimbursement for CT colonography (CTC) continues to languish.
Segmentation technique supports coronary CAD
August 26, 2014 -- A new coronary artery segmentation and tracking method is showing promise for supporting computer-aided detection (CAD) schemes that can read coronary CT angiography scans to look for arteries blocked by both soft and calcified plaque, according to research published in Medical Physics.
CT, MRI use declined in ED after 2007
August 20, 2014 -- After a period of rapid increase from 1993 to 2007, use of medical imaging in the emergency department (ED) declined, mostly because of decreased utilization of CT and MRI, according to a new study published this month in the American Journal of Roentgenology.
Decade of lung CAD brings insight, but little daily use
August 19, 2014 -- Computer-aided detection (CAD) is known to boost radiologist performance in the detection of lung nodules, and radiologists certainly need the help. But despite a decade of fine-tuning and some powerful new capabilities, CAD systems haven't found a place in daily practice at most imaging facilities
Study shows combined thoracic CT use has dropped
August 14, 2014 -- Combined CT scans of the thorax -- which Medicare has been keeping an eye on -- aren't being overused after all. In fact, use of the combined scans is low and falling over time, according to a new study in the Journal of the American College of Radiology.
Interventional radiologists need to follow shielding protocols
August 13, 2014 -- Patients must be protected from unnecessary radiation exposure, but what about radiologists who perform interventional exams, particularly CT-guided procedures? German researchers found that radiologists have a low risk of overexposure -- if appropriate precautions are taken.
Circulation: Little radiation risk seen in cardiac scans
August 11, 2014 -- A lack of demonstrated harms combined with significant recent dose reductions have led at least one group of cardiovascular imaging specialists to worry less about the risks of a heart scan and more about the well-being of the patient, according to a new review article in Circulation.
Automated CT tool reveals pulmonary hypertension
August 8, 2014 -- In a new study that used computer-aided analysis, the presence of low normal lung tissue volume correlated with pulmonary arterial hypertension at 3D CT. The technique could offer a more accessible and less invasive diagnostic test than right heart catheterization, according to researchers from Japan.
Do homework before plugging in CT iterative reconstruction
August 6, 2014 -- Implementing iterative reconstruction on your CT scanner is more than just turning the thing on: You need a careful stepwise approach to get the most out of the radiation dose reduction technology, according to Dr. Jeffrey Mendel. In fact, a full review of your institution's CT protocols could be in order.
CT shows Egyptian heart disease hasn't changed in millennia
August 4, 2014 -- CT scans of coronary artery calcium in modern Egyptians revealed that they had patterns of atherosclerosis nearly identical to those of ancient Egyptian mummies -- right down to the affected anatomy, according to a new study in Global Heart.
Imaging exams guided treatment after Boston Marathon bombing
July 30, 2014 -- Medical imaging exams such as x-ray and CT played a key role in managing patients who arrived in the minutes and hours after the Boston Marathon bombing last year, according to a study in the August issue of the American Journal of Roentgenology.
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