A magnetic resonance-compatible experimental set-up for hyperthermia studies

Area of Science:

• Biomedical Engineering
• Cancer Research
• In Vivo Imaging

Background:

• Accurate monitoring of tumor microenvironment is crucial for cancer research.
• Simultaneous measurement of multiple parameters can provide deeper insights.
• Existing methods may have limitations in combined measurements.

Purpose of the Study:

• To develop and validate an experimental setup for simultaneous in vivo measurements.
• To assess intracellular and extracellular pH, tumor bioenergetics, and temperature.
• To identify and resolve potential measurement errors in a Magnetic Resonance (MR) setup.

Main Methods:

• Development of a specialized experimental setup for Magnetic Resonance (MR) imaging.
• Simultaneous measurement of intracellular pH (by MR) and extracellular pH (by fiber-optic pH meter).
• Concurrent assessment of tumor bioenergetics (by MR) and core/tumor temperatures (by thermocouples) in tumor-bearing mice.

Main Results:

• Successful development and testing of the integrated measurement system.
• Identification of potential sources of error in concurrent MR-based measurements.
• Demonstration of practical solutions to mitigate measurement interferences.

Conclusions:

• The developed setup enables simultaneous, multi-parametric assessment of the tumor microenvironment.
• Addressing potential errors is key for reliable in vivo cancer studies.
• This methodology offers a valuable tool for advancing preclinical cancer research.