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- Mammography
Low-dose multislice CT make gains in bone marrow diagnosis
Low-dose, whole-body CT not only provides a very sensitive diagnosis of osteolytic bone lesions, but it can also serve as an alternative to costly MR studies and replace time-consuming x-ray skeletal surveys, according to a presentation Tuesday.
Low-dose, whole-body CT not only provides a very sensitive diagnosis of osteolytic bone lesions, but it can also serve as an alternative to costly MR studies and replace time-consuming x-ray skeletal surveys, according to a presentation Tuesday.
German researchers assessed 40 patients with proven multiple myeloma. Twenty of them (group A) underwent whole-body scanning with an effective dose of 100 mAs. The remaining 20 (group B) underwent whole-body scanning at 50 mAs. The low-dose protocol provided high-quality images, but with a radiation exposure similar to that of x-rays.
"We are moving to use the 50 mAs as our standard dose protocol at our institution," said coauthor Dr. Sonja Buhmann, a resident at the University of Munich's Institute of Clinical Radiology.
The investigators could detect all osteolytic lesions in both groups. Qualitative evaluation scored as nearly excellent for group A and good for group B, according to the four-grade scale used by two experienced readers (1 = excellent, 4 = not sufficient).
The calculated mean radiation dose was 10 mSv and 5 mSv for groups A and B, respectively. Group B recorded significantly higher mean image noise values than the standard protocol (84 HU vs 51 HU). The scanning protocol for both groups included 16-row scanning with 3-mm axial and sagittal slice reconstruction and 1.5 collimation at 120 kVp. Whole-body MRI served as the gold standard for comparison.
A comparison chart showed costs for CT scanning as slightly higher than for x-rays, but more affordable than MR (320, 230, and 590 euros, respectively). Multislice CT scanning, however, could be accomplished at a fraction of the time invested in x-ray and MR image processing, Buhmann said.
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?
December 14th 2023The use of 68Ga-RM2 PET/MRI demonstrated a 35 percent higher sensitivity rate than MRI alone for the diagnosis of biochemical recurrence of prostate cancer, according to research recently presented at the Radiological Society of North America (RSNA) conference.
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.
