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Noncontrast MR angiography creates equivalent image quality to contrast
Noncontrast MR angiography provides an alternative to the more common contrast-enhanced MRA administered with a gadubutrol-based agent, according to a report presented at the RSNA meeting Tuesday morning.
Noncontrast MR angiography provides an alternative to the more common contrast-enhanced MRA administered with a gadubutrol-based agent, according to a report presented at the RSNA meeting Tuesday morning.
Dr. Christopher Francois, an assistant professor of radiology at the University of Wisconsin, and colleagues imaged 12 healthy volunteers and 51 patients with a 3D phase-contrast sequence and a novel respiratory gated phase-contrast vastly undersampled isotropic projection reconstruction (PC VIPR) sequence.
The researchers also acquired contrast-enhanced MRA exams and 2D phase-contrast data for several of the patients.
Francois and colleagues evaluated the images based on quality and visibility of vessels. Two blinded radiologists compared vessel visibility acquired with CE-MRA and PC VIPR independently and in random order.
The blinded radiologists reported equivalent overall image quality for both protocols. Poor breath-holds compromised quality for some CE-MRA scans, while PC VIPR had reduced image quality in highly obese patients.
Because CE-MRA scans and PC VIPR showed equivalent overall image quality, Francois said PC VIPR is a good alternative to CE-MRA, especially for patients who are at risk for nephrogenic systemic fibrosis.
PC VIPR has become the standard protocol at the University of Wisconsin, he said.
Future analysis will investigate the correlation of transstenotic pressure gradients obtained noninvasively with PC VIPR and invasively under x-ray fluoroscopy, according to Francois.
AI Facilitates Nearly 83 Percent Improvement in Turnaround Time for Fracture X-Rays
December 19th 2023In addition to offering a 98.5 percent sensitivity rate in diagnosing fractures on X-ray, an emerging artificial intelligence (AI) software reportedly helped reduce mean turnaround time on X-ray fracture diagnosis from 48 hours to 8.3 hours, according to new research presented at the Radiological Society of North America (RSNA) conference.
The Reading Room: Artificial Intelligence: What RSNA 2020 Offered, and What 2021 Could Bring
December 5th 2020Nina Kottler, M.D., chief medical officer of AI at Radiology Partners, discusses, during RSNA 2020, what new developments the annual meeting provided about these technologies, sessions to access, and what to expect in the coming year.
Can an Emerging PET Radiotracer Enhance Detection of Prostate Cancer Recurrence?
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RSNA 2020: Addressing Healthcare Disparities and Access to Care
December 4th 2020Rich Heller, M.D., with Radiology Partners, and Lucy Spalluto, M.D., with Vanderbilt University School of Medicine, discuss the highlights of their RSNA 2020 session on health disparities, focusing on the underlying factors and challenges radiologists face to providing greater access to care.
Can AI Improve Detection of Extraprostatic Extension on MRI?
December 4th 2023Utilizing a deep learning-based AI algorithm to differentiate between diagnostic and non-diagnostic quality of prostate MRI facilitated a 10 percent higher specificity rate for diagnosing extraprostatic extension on multiparametric MRI, according to research presented at the recent RSNA conference.
Study: Regular Mammography Screening Reduces Breast Cancer Mortality Risk by More than 70 Percent
November 30th 2023Consistent adherence to the five most recent mammography screenings prior to a breast cancer diagnosis reduced breast cancer death risk by 72 percent in comparison to women who did not have the mammography screening, according to new research findings presented at the annual Radiological Society of North America (RSNA) conference.
