Erik L. Ridley

ISMRM 2025
ISMRM: AI spots ischemic heart disease on low GBCA dose images
An AI-based framework was highly accurate for detecting myocardial ischemia, even on images acquired with 90% less gadolinium.
May 14, 2025
Representative stress perfusion CMR case with 80% contrast dose reduction. Pixel-wise MBF maps and AHA 16-segment bull's eye plots are shown for full-dose and reduced-dose acquisitions. When analyzed using the proposed MST deep learning method, the reduced-dose data closely matches the full-dose data across basal, mid, and apical slices. In contrast, Fermi-deconvolution shows good agreement in apical and mid slices but overestimates MBF in some basal segments, indicating reduced accuracy under low-dose conditions. Image courtesy of the ISMRM.
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Top Stories
Contrast-enhanced T1 weSPGR images of the knee of a patient from the GAE group at the level of the suprapatellar recess. The baseline image (left) shows a marked synovial enhancement. There was no change one month after treatment (middle image) and four months after treatment (right image).
Interventional
GAE benefits may just be ‘placebo effect’
Patients who received either genicular artery embolization (GAE) or a sham procedure experienced equal pain improvements.
Helium Element
MRI
Opinion: Radiologists must be proactive to protect helium supply
Keeping Up With The Radiologists Podcast Thumbnail
Economics
Podcast: Teleradiology leader discusses Indian radiology hub, AI initiatives
Cola
CT
CT reveals new use for Coca-Cola: Dissolving fecalomas
Turning Innovation into Everyday Efficiency
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Turning Innovation into Everyday Efficiency
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GAE benefits may just be ‘placebo effect’
By Will Morton
Patients who received either genicular artery embolization (GAE) or a sham procedure experienced equal pain improvements.
April 22, 2026
Contrast-enhanced T1 weSPGR images of the knee of a patient from the GAE group at the level of the suprapatellar recess. The baseline image (left) shows a marked synovial enhancement. There was no change one month after treatment (middle image) and four months after treatment (right image).
Opinion: Radiologists must be proactive to protect helium supply
The mandate arises in the context of recent helium supply disruptions caused by global unrest.
April 22, 2026
Helium Element
Podcast: Teleradiology leader discusses Indian radiology hub, AI initiatives
By Liz Carey
It is time to rethink some policies, according to Arjun Kalyanpur, MD.
April 22, 2026
Keeping Up With The Radiologists Podcast Thumbnail
CT reveals new use for Coca-Cola: Dissolving fecalomas
By Kate Madden Yee
CT imaging helped diagnose a large fecaloma and track a patient's response to a Coca-Cola enema to dissolve it.
April 22, 2026
Cola
Ultrasound O-RADS categorizes borderline ovarian tumors
By Amerigo Allegretto
Ultrasound deems most borderline ovarian tumors to be O-RADS category 4 or 5, with most tumors being serous.
April 22, 2026
Ovarian Cancer Social
AI plus CCTA cuts plaque analysis time, predicts cardiac event risk
By Kate Madden Yee
A deep-learning model quantifies coronary plaque volume from coronary CT angiography (CCTA) images.
April 21, 2026
Two representative cases demonstrate the performance of PlaqueSegNet for coronary plaque segmentation. (A–D) Coronary CT angiography (CCTA) and intravascular US (IVUS) images in a 65-year-old male patient with chest pain for two months show plaque. (A) Cross-sectional IVUS image shows a lipid-rich plaque (hypoechoic, arrows). (B) Axial and (C) cross-sectional CCTA images show the same plaque (low-attenuation area, yellow line and arrows) in the proximal left anterior descending artery. (D) PlaqueSegNet segmentation of the noncalcified plaque (yellow shading) and coronary lumen (green shading) in the cross-sectional image. (E–G) CCTA images in a 57-year old female patient with chest pain for three months show multiple plaques. (E) Volume-rendered CCTA image of the coronary tree shows PlaqueSegNet plaque segmentation (yellow) in the right and left coronary arteries. (F, G) PlaqueSegNet segmentation delineates a mixed plaque (yellow shading) and coronary lumen (green shading) in the left main artery and proximal-to-mid left anterior descending artery.
DBT availability similar in areas with high, low resource deprivation
By Amerigo Allegretto
DBT is offered at similar rates among areas with high and low resource deprivation, and at similar costs.
April 21, 2026
Breast Tomosynthesis Digital 400 (1)
Podcast: Story just got 'weirder' in Nassau Open MRI fatality
By Liz Carey
Episode 8 of The Invisible Force takes a surprising turn.
April 21, 2026
The Invisible Force Podcast Album Cover Auntminnie Jan 2026 Thumbnail sra O0 D Ij Z6
FAPI-PET superior to FDG-PET in liver cancer
By Will Morton
The finding is from a prospective head-to-head comparison among 59 patients with suspicious lesions.
April 20, 2026
A 65-y-old man with HCC and liver cirrhosis confirmed by MRI. Ga-68 FAPI-46 PET/CT demonstrates increased focal uptake (SUVmax, 13.26, and TBRmax, 2.89) in liver, whereas F-18 FDG-PET/CT scans showed non–F-18 FDG-avid lesion (SUVmax, 3.24, and TBRmax, 1.43), indicated by solid arrows. Additionally, histologically proven adenocarcinoma in colon transversum was identified as pathologic with Ga-68 FAPI-46 alone (dashed arrows).
Women face more diagnostic delays after abnormal mammograms
By Amerigo Allegretto
Since the COVID-19 pandemic, women face more diagnostic delays in having their abnormal screening mammograms evaluated.
April 20, 2026
Woman Mask Anxiety Covid Resized
Radiologists land on low end of industry research money, study finds
By Liz Carey
Group assessed trends in industry research payments.
April 20, 2026
Research Money Social
U.S. federal research funding varies by cancer type
By Will Morton
Findings indicate that cancers with the highest lethality receive disproportionately lower levels of federal research support.
April 20, 2026
Cancertarget
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