Methodological considerations in rat brain BOLD contrast pharmacological MRI

Area of Science:

• Neuroscience
• Pharmacology
• Magnetic Resonance Imaging

Background:

• Blood oxygen level dependent (BOLD) contrast pharmacological MRI (phMRI) is a non-invasive technique to study functional brain changes in rats.
• Its application is limited to a few labs, highlighting the need for standardization and practical guidance.
• This review targets psychopharmacologists new to phMRI, focusing on its application in vivo.

Purpose of the Study:

• To provide a practical guide for psychopharmacologists on utilizing BOLD contrast phMRI in rat studies.
• To address key experimental and analytical considerations for successful phMRI investigations.
• To facilitate the adoption and enhance the rigor of phMRI techniques in neuropharmacology.

Main Methods:

• The review discusses essential experimental parameters for phMRI studies.
• It covers critical analytical considerations for interpreting phMRI data.
• Key aspects like anesthesia, physiological monitoring, and drug delivery are detailed.

Main Results:

• The review consolidates practical knowledge for implementing phMRI in rat models.
• It identifies and discusses challenges and solutions in phMRI experimental design.
• Guidance is provided on optimizing scanning protocols and statistical analysis.

Conclusions:

• Effective use of BOLD contrast phMRI requires careful attention to experimental and analytical details.
• This review equips researchers with the necessary knowledge to conduct robust phMRI studies.
• Standardized approaches will advance the use of phMRI in understanding drug effects on brain function.