Related Experiment Video

Updated: Feb 6, 2026

Utilizing 3D Printing Technology to Merge MRI with Histology: A Protocol for Brain Sectioning
15:53

Utilizing 3D Printing Technology to Merge MRI with Histology: A Protocol for Brain Sectioning

Published on: December 6, 2016

15.6K

Air bubble artifact reduction in post-mortem whole-brain MRI: the influence of receiver bandwidth

Max Scheffler1, Enrique Maturana2, Rares Salomir3,4

  • 1Department of Radiology, Geneva University Hospitals, Ch. du Pont-Bochet 3, 1226, Thonex, Switzerland. max.scheffler@hcuge.ch.

Neuroradiology
|August 10, 2018
PubMed

Insights

Higher receiver bandwidth in post-mortem MRI reduces air bubble artifacts on susceptibility-weighted imaging (SWI). This technique maintained clear visualization of cerebral microbleeds, improving image quality for post-mortem brain analysis.

Area of Science:

  • Neuroimaging
  • Radiology
  • Post-mortem studies

Background:

  • Air bubble artifacts in susceptibility-weighted imaging (SWI) can hinder cerebral microbleed detection in post-mortem MRI.
  • Accurate identification of microbleeds is crucial for neuropathological research.

Purpose of the Study:

  • To evaluate if a higher receiver bandwidth (500 Hz/pixel) can minimize cortical air bubble artifacts.
  • To determine if this modification compromises the detection of cerebral microbleeds in high-field MRI.

Main Methods:

  • Utilized a higher receiver bandwidth (500 Hz/pixel) during SWI acquisition in post-mortem MRI.
  • Compared artifact reduction and microbleed visibility with standard bandwidth settings.

Main Results:

  • A 17% reduction in the long axis of "halo" magnitude artifacts was observed.
  • All cerebral microbleeds remained clearly visible on images acquired with the higher bandwidth.
  • Air bubble artifacts appeared identical on corresponding phase images.

Conclusions:

  • Increasing receiver bandwidth is an effective method to reduce air bubble artifacts in post-mortem SWI.
  • This technique preserves the sensitivity for detecting cerebral microbleeds, enhancing diagnostic accuracy.
Keywords:
Air bubble artifactsMRIMicrobleedsPostmortemSWI

More Related Videos

Protocol for the Evaluation of MRI Artifacts Caused by Metal Implants to Assess the Suitability of Implants and the Vulnerability of Pulse Sequences08:19

Protocol for the Evaluation of MRI Artifacts Caused by Metal Implants to Assess the Suitability of Implants and the Vulnerability of Pulse Sequences

Published on: May 17, 2018

10.4K
A Protocol for Rapid Post-mortem Cell Culture of Diffuse Intrinsic Pontine Glioma DIPG08:46

A Protocol for Rapid Post-mortem Cell Culture of Diffuse Intrinsic Pontine Glioma DIPG

Published on: March 7, 2017

17.5K

Related Concept Videos

Excess Pressure Inside a Drop and a Bubble01:13

Excess Pressure Inside a Drop and a Bubble

The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
3.5K
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

Oxidation–Reduction Reactions
75.8K
Receiver Operating Characteristic Plot01:15

Receiver Operating Characteristic Plot

A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
489
Air-entraining Agents01:27

Air-entraining Agents

Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
275
Effects of Air-entrainment in Concrete01:28

Effects of Air-entrainment in Concrete

Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
394
The Influence of Affect on Cognition01:29

The Influence of Affect on Cognition

Positive affect significantly influences cognitive processes, including evaluation, memory, creativity, and social judgments. Compared to negative affect, positive emotional states promote more favorable interpretations of stimuli, cognitive flexibility, and heuristic processing. These effects highlight emotions' powerful role in shaping how individuals perceive, remember, and interact with the world.Influence on Evaluation and AttributionWhen individuals experience positive affect, they are...
296