Radiology News
MedCAC bombarded with info about prostate radiotherapy
April 26, 2010 -- An advisory committee to the U.S. Centers for Medicare and Medicaid Services (CMS) tried to get a handle on the thorny issue of radiation therapy for prostate cancer last week. But the panel encountered a thicket of literature that despite its volume failed to offer much guidance as to whether CMS should increase Medicare reimbursement.
MRI hippocampal measurement doesn't predict cognitive decline
April 26, 2010 -- Using MRI to measure hippocampal volume is not a good method for predicting subsequent cognitive decline in older adults from the general community, according to a study presented at the recent American Academy of Neurology meeting in Toronto.
Coronary CTA best next test for positive stress patients
April 23, 2010 -- Asymptomatic individuals with positive cardiac stress results should proceed to coronary CT angiography (CTA) rather than an invasive cardiac catheterization, according to a new report in the May American Journal of Roentgenology. The study found that low-risk patients received more cost-effective care by using coronary CTA as a gatekeeper test.
Low-performing mammographers need additional training
April 23, 2010 -- A study published in the May issue of Radiology has identified set criteria that could be used to identify physicians who may benefit from additional training in interpreting screening mammograms.
Imaging utilization can vary widely for pediatric inpatients
April 23, 2010 -- What factors influence the number of diagnostic imaging exams ordered for inpatients in children's hospitals in the U.S.? A statistical analysis of nearly 1.5 million pediatric inpatients conducted by researchers at Children's Hospital Boston generated more questions than answers.
Pediatric CT dose is low but varies widely in Belgium
April 23, 2010 -- A national survey of scan protocol behavior and radiation dose at hospitals in Belgium has found that even though most facilities are generally keeping pediatric CT radiation dose low, there is still some variation between sites in terms of median dose levels.
Are hospitals playing hardball with radiology groups?
April 22, 2010 -- A large California hospital network has ended a long-term contract with a Sacramento radiology group that provided it with imaging services for years. Industry watchers are wondering if the decision reveals a trend of hospitals playing hardball with radiology groups as power shifts away from radiology practices.
Reduced dose can still yield acceptable pediatric CT images
April 22, 2010 -- By using simple weight-based kilovoltage adjustments with already low current, significant radiation dose reduction and acceptable image quality can be achieved for pediatric CT exams, according to a study in the May issue of the American Journal of Roentgenology.
Breast density linked to increased breast cancer risk
April 21, 2010 -- Women with breast density of at least 75% on a mammogram have a four to five times greater risk of breast cancer than women with little or no density, making density a strong indicator for cancer risk, according to research presented at the American Association for Cancer Research meeting in Washington, DC.
Thyroid elastography may reduce unnecessary FNA biopsies
April 21, 2010 -- A significant percentage of thyroid nodule fine-needle aspiration (FNA) biopsies lead to benign findings. But use of thyroid elastography may avoid the need for biopsy in many of these patients, according to research published in the April issue of the Journal of Ultrasound in Medicine.
Volume helical shuttle CT perfusion identifies stroke patients
April 20, 2010 -- Whole-brain CT perfusion with a volume helical shuttle technique provides rapid confirmation of whether patients have suffered a stroke or transient ischemic attack, according to studies presented last week at the American Academy of Neurology annual meeting in Toronto.
Dual-phase CT protocol drops dose for tracheal exams in kids
April 20, 2010 -- Tracheomalacia, a weakness in the tracheal walls and supporting cartilage that can cause expiratory collapse, can be difficult to diagnose. Dual-phase CT provides a fast and accurate means of diagnosing the condition, but its use comes with an important caveat: double the radiation dose.
3T MRA protocol has value but falls short in abdominal vasculature
April 19, 2010 -- A time-resolved 3-tesla MR angiography (MRA) technique that uses less contrast dose than conventional high-resolution MRI has some advantages in the abdominal aorta, but its lower signal-to-noise ratio means it probably won't supplant conventional MRA, according to a study in the May Academic Radiology.
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