简介：
Overview
This protocol outlines a method for maintaining the viability of acute hippocampal and cortical slice preparations while collecting magnetic resonance microscopy data. It emphasizes the importance of favorable metabolic conditions for living tissue samples during imaging.
Key Study Components
Area of Science
- Neuroscience
- Medical Imaging
- Magnetic Resonance Microscopy
Background
- Maintaining tissue viability is crucial for accurate imaging results.
- The method allows for continuous perfusion during image acquisition.
- Visual demonstration aids in understanding the complex assembly of equipment.
- Proper gas saturation and pH levels are essential for healthy tissue metabolism.
Purpose of Study
- To provide a reliable method for imaging living brain tissue.
- To explore MR contrast properties of living cells and tissue components.
- To enhance the understanding of metabolic conditions in brain slices.
Methods Used
- Preparation of artificial cerebrospinal fluid (aCSF) with carbogen saturation.
- Assembly of a micro coil and oxygenator for perfusion.
- Isolation and slicing of hippocampal and cortical tissues.
- Continuous monitoring of oxygen levels during imaging.
Main Results
- The method successfully maintains tissue viability during imaging.
- High oxygen saturation levels were achieved in the perfusate.
- Visual confirmation of sample placement was critical for accurate results.
- Stable diffusion signals were observed in the perfused slices.
Conclusions
- This technique is effective for studying living brain tissue under imaging conditions.
- Maintaining metabolic conditions is essential for reliable imaging outcomes.
- The protocol can aid in future research in medical imaging and neuroscience.
What is the main goal of this protocol?
The main goal is to maintain the viability of brain tissue samples during magnetic resonance microscopy imaging.
Why is gas saturation important?
Gas saturation ensures that the tissue samples receive adequate oxygen for metabolic processes during imaging.
How are the tissue slices prepared?
Tissue slices are prepared using a Vibratome to cut 300 micrometer thick sections from the hippocampus and cortex.
What role does the micro coil play?
The micro coil is used to hold the brain tissue sample in place during imaging and facilitate perfusion.
How is the perfusion system sealed?
The perfusion system is sealed by clenching the profusion chamber over the micro coil's tissue well.
What is the significance of visual confirmation?
Visual confirmation of sample placement is critical to ensure accurate imaging results.
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