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Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

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Related Experiment Video

Updated: Jun 21, 2026

Intraoperative Ultrasound in Spinal Surgery

Intraoperative Ultrasound in Spinal Surgery

Published on: August 17, 2022

[Image-guided neurosurgery using intraoperative MRI].

Masazumi Fujii¹, Toshihiko Wakabayashi

¹Department of Neurosurgery, Graduate School of Medicine, Nagoya University, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.

Brain and Nerve = Shinkei Kenkyu No Shinpo

|July 22, 2009

Summary

This summary is machine-generated.

Precise glioma resection is challenging due to unclear tumor margins and brain shift. Intraoperative MRI (iMRI) offers advanced image guidance, but neurophysiological monitoring is crucial for accuracy and patient safety.

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Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

Area of Science:

Neurosurgery
Oncology
Medical Imaging

Context:

Precise removal of infiltrative brain tumors like gliomas remains difficult despite surgical advancements.
Neuronavigation systems are limited by the "brain shift" phenomenon.
Total or near-total glioma resection is linked to improved patient prognosis.

Purpose:

To evaluate the effectiveness and challenges of intraoperative MRI (iMRI) in image-guided neurosurgery for infiltrative brain tumors.
To discuss the application of iMRI based on literature and extensive surgical experience.

Summary:

Intraoperative MRI (iMRI) enhances image-guided neurosurgery for challenging glioma resections.
The study reviews iMRI effectiveness and issues using data from over 400 operations across two iMRI suites (Brain THEATER and BrainSUITE).
Neurophysiological monitoring (e.g., MEP, awake craniotomy) is essential to validate iMRI accuracy and ensure patient safety.

Impact:

iMRI integration into operating rooms is increasing globally.
This work provides insights into optimizing iMRI use for better surgical outcomes in brain tumor treatment.
Highlights the necessity of combining advanced imaging with real-time monitoring for complex neurosurgical procedures.