RSNA 2015

Oct 25, 2015

McCormick Place awaits the arrival of delegates from around the globe for RSNA 2015.

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A lollipop plots showing the most important nodes by RF-MLA selected by Mean decrease in Gini for a 7 tesla fMRI dataset, with longer sticks meaning greater importance. Each group of networks’ nodes has its own color matching the same network’s color in the brain map. Nodes' names preceded by a red asterisk are repeated among different networks, matching the red nodes in the brain map, which appear in multiple networks.

ISMRM: fMRI identifies key brain regions in superagers

May 11, 2025

Workflow for FTD, AD, and CN classification using automated brain volumetry. Graphic and caption courtesy of Seung Hyun Lee and the ISMRM.

ISMRM: Deep-learning tool shows promise in diagnosing frontotemporal dementia

May 11, 2025

Regions of interest depicted in colors: cerebrospinal fluid (blue), cortical gray matter (dark green), and white matter (yellow). Scatter plots present significant correlations between (b) [semi-solid spin pool size, or ms0m0s] entropy and age in cerebrospinal fluid and cortical gray matter, and (c) [longitudinal relaxation rates, or Rf1R1f] entropy and age in cortical gray matter and white matter (p < 0.05). Images, graphics, and caption courtesy of Sohae Chung, PhD, and the ISMRM.

ISMRM: Novel MRI technique identifies changes in brain entropy

May 11, 2025

$The hazard ratio for mean diffusivity and reciprocal of the hazard ratio for fractional anisotropy. Increases in mean diffusivity and decreases in fractional anisotropy are associated with a higher risk of conversion.$

ISMRM: Diffusion MRI predicts progression to Alzheimer's

May 11, 2025

ISMRM: fMRI identifies key brain regions in superagers

Functional MRI (fMRI) has shed new light on brain areas that differentiate superagers from cognitively average older adults.

May 11, 2025

A lollipop plots showing the most important nodes by RF-MLA selected by Mean decrease in Gini for a 7 tesla fMRI dataset, with longer sticks meaning greater importance. Each group of networks’ nodes has its own color matching the same network’s color in the brain map. Nodes' names preceded by a red asterisk are repeated among different networks, matching the red nodes in the brain map, which appear in multiple networks.

ISMRM: Deep-learning tool shows promise in diagnosing frontotemporal dementia

By Maryam Payne

An automated brain volumetry model for MRI shows promising accuracy in diagnosing FTD, according to research presented at ISMRM 2025.

May 11, 2025

Workflow for FTD, AD, and CN classification using automated brain volumetry. Graphic and caption courtesy of Seung Hyun Lee and the ISMRM.

ISMRM: Novel MRI technique identifies changes in brain entropy

By Kate Madden Yee

A novel MRI technique called quantitative magnetization transfer (qMT) identifies changes in brain entropy due to normal aging.

May 11, 2025

Regions of interest depicted in colors: cerebrospinal fluid (blue), cortical gray matter (dark green), and white matter (yellow). Scatter plots present significant correlations between (b) [semi-solid spin pool size, or ms0m0s] entropy and age in cerebrospinal fluid and cortical gray matter, and (c) [longitudinal relaxation rates, or Rf1R1f] entropy and age in cortical gray matter and white matter (p < 0.05). Images, graphics, and caption courtesy of Sohae Chung, PhD, and the ISMRM.

ISMRM: Diffusion MRI predicts progression to Alzheimer's

By Amerigo Allegretto

A presentation at ISMRM 2025 suggests diffusion MRI could predict progression from mild cognitive impairment to Alzheimer's.

May 11, 2025

The hazard ratio for mean diffusivity and reciprocal of the hazard ratio for fractional anisotropy. Increases in mean diffusivity and decreases in fractional anisotropy are associated with a higher risk of conversion.

ISMRM: Exercise may reduce structural brain changes

Researchers examine the relationship between exercise intensity, brain volume changes, and depression.

May 11, 2025

Boxplot showing significantly larger brain volumes in individuals engaging in vigorous daily exercise compared to those with sedentary or moderate activity levels. The exercise intensity-brain volume pattern is similar across both depressed and nondepressed individuals.

ISMRM: Contrast-free MR angiography comparable to CT for PE detection

University of Michigan researchers investigate detectability of pulmonary embolism by noncontrast MR angiography at 0.55 tesla.

May 10, 2025

Axial (A) and Coronal (B) CTPA show multiple partial intraluminal filling defects along the course of the right middle lobar segmental branches (medial segment) (yellow arrow) and lower lobar and postero-medial segmental branches (green arrow). Note the low-signal filling defects on the axial and coronal 0.55T MRI sequence.

ISMRM: Insulin resistance in women associated with less myelin, changes in brain

By Maryam Payne

ISMRM research indicates that higher insulin resistance is associated with less myelin in women.

May 10, 2025

Associations between insulin resistance and MWF. (A) Distribution of insulin resistance, stratified by sex. (B) Regression analysis of whole-brain MWF vs. log (HOMA-IR), adjusted for age and age². Shaded regions indicate 95% confidence intervals. (C) Regression analysis of whole-brain MWF vs. log (HOMA-IR), adjusted for age, age², sex, and log (HOMA-IR) sex. Graphics and caption courtesy of Nathan Zhang, PhD, and the ISMRM.

ISMRM: Brain’s waste-clearing system accelerates brain aging after stroke

The the brain’s glymphatic system appears to accelerate brain aging in patients after ischemic stroke.

May 10, 2025

Representative T2-FLAIR, CBF maps, choroid plexus segment, free-water maps, ALPS ROI, and 3D T1BRAVO from a stroke patient, and a healthy control. Both individuals are 64 years old in chronological age. The patient displays an evident ischemic lesion in the basal ganglia region on T2-FLAIR imaging. The distinctions between the patient and the healthy control are as follows: CBF (32.22 ml/100g/min vs. 47.70 ml/100g/min), CPVF (1.47 vs. 0.84), VCSFVF (32.50 vs. 11.00), MSFW (0.0455 vs. 0.0313), ALPS (1.04 vs. 1.54), and BPAD (13.21 vs. -1.60).

ISMRM: Trimodal PET-MR-FUS may be feasible therapy monitoring option

By Amerigo Allegretto

Researchers at ISMRM 2025 touted the success of a trimodal MR-PET-FUS system that could have applications for therapy monitoring.

May 10, 2025

Researchers at ISMRM highlighted the success of a trimodal MR-PET-FUS system built around a low-field MRI scanner. MR (top) and PET (bottom) images were acquired simultaneously before and after FUS heating.

ISMRM: Switching between full and short breast MRI reduces recalls

By Kate Madden Yee

Switching between abbreviated and full protocols for breast MRI can reduce exam time and lower recall rates.

May 10, 2025

Protocol time and recall bounds as a function of AI specificity and sensitivity. On the top, the bounds are shown as a function of the specificity of the AI algorithm, for a fixed value of the sensitivity of that same AI model. On the bottom, the bounds are shown as a function of the sensitivity, for a fixed specificity. Graphics and caption courtesy of the ISMRM.

Beta-amyloid testing results have limited emotional impact for patients

By Maryam Payne

Receiving results from amyloid beta testing did not have a significant negative emotional impact on patients, whether negative or positive, findings from a new study show.

May 9, 2025

Brain Amyloid Plaque Neuron

PET/MRI reveals how brain stimulation technique works

PET/MRI scans have revealed the mechanism underlying a brain stimulation technique for treating neurological and psychiatric conditions.

May 9, 2025

2025 05 09 Brain Stimulation Thumbnail

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