PET identifies tau's origin in Alzheimer's disease
January 21, 2021 -- An automated PET image analysis method can track the development of tau protein clumps in the brains of people with Alzheimer's disease, revealing an important clue in how the devastating disease could potentially be treated, according to research published online January 20 in Science Translational Medicine.  Discuss
SNMMI urges fast-track review of Technegas for V/Q scans
January 21, 2021 -- The Society of Nuclear Medicine and Molecular Imaging (SNMMI) has sent a letter to the U.S. Food and Drug Administration (FDA) urging the agency to begin a fast-track review of the Technegas agent for nuclear medicine ventilation/perfusion (V/Q) lung scans.  Discuss
Can CT provide a better map of breast density?
January 21, 2021 -- An international research team used dozens of CT images to map breast density in a January 16 study published in Medical Physics. Their technique could lead to more accurate radiation dose estimates and improved breast cancer risk models.  Discuss
IMV: CT procedure volume fell 20% in 2020
January 20, 2021 -- The COVID-19 pandemic had an immediate impact on total CT procedure volume in the U.S. in 2020, with procedure volume projected to be 20% lower than in 2019. That's according to a new report by market research firm IMV Medical Information Division.  Discuss
PET shows aerobic exercise has little effect on amyloid
January 20, 2021 -- While aerobic exercise is good for the cardiovascular system, PET images show a weekly regimen of this activity does nothing to change the status of beta-amyloid buildup in older adults with elevated levels of the marker for Alzheimer's disease, according to a study published online January 14 in PLOS One.  Discuss
FDA commissioner Hahn leaves agency
January 20, 2021 -- Dr. Stephen Hahn, the commissioner of the U.S. Food and Drug Administration (FDA), has left the agency. He is being replaced on an interim basis by longtime FDA regulator Dr. Janet Woodcock.  Discuss
Primary docs don't spend much on low-value care
January 20, 2021 -- Primary care physician (PCP) services and referrals account for a small minority of spending on low-value care such as imaging for nonspecific back pain, according to a January 19 study in the Annals of Internal Medicine.  Discuss
FDA proposal to relax 510(k) rules on AI raises eyebrows
January 19, 2021 -- A proposal by the U.S. Food and Drug Administration (FDA) to eliminate 510(k) review for a number of artificial intelligence (AI) software applications is raising eyebrows in the radiology industry. The question is whether the proposal will be implemented after the Trump Administration ends this week.  Discuss
AI, radiomics predicts prostate cancer recurrence
January 19, 2021 -- A diagnostic model that incorporates artificial intelligence (AI) analysis of radiomics features on multiparametric MRI can predict the likelihood of prostate cancer recurrence prior to surgical treatment, enabling preoperative risk stratification of patients, according to research published in the January issue of EBioMedicine.  Discuss
How high a price for incidental lung nodules on CT?
January 19, 2021 -- A new study published January 19 in JAMA Internal Medicine links overtreatment of incidental lung nodules found on CT with more radiation, adverse events, and higher health system costs. However, researchers couldn't determine whether or not it also resulted in earlier cancer diagnosis.  Discuss