μ-ViP: Customized virtual phantom for quantitative magnetic resonance micro-imaging at high magnetic field.

Area of Science:

• Magnetic Resonance Imaging
• Spectroscopy
• Biomedical Engineering

Background:

• Magnetic Resonance micro-Imaging (MRμI) applications are widespread but often lack quantitative measurements for dynamic or long acquisitions.
• Key challenges include maintaining a stable reference signal from a phantom under varying experimental conditions like temperature and moisture.

Purpose of the Study:

• To implement a dedicated setup for generating a virtual phantom (ViP) signal.
• To utilize a vertical-bore 11.7 T NMR spectrometer with a micro-imaging probe.
• To create a micro-imaging-dedicated ViP (μ-ViP) signal for improved MRμI.

Main Methods:

• Implementation of a specialized experimental setup within an 11.7 T NMR spectrometer.
• Generation of a virtual phantom (ViP) signal using a micro-imaging probe.
• Testing the stability of the μ-ViP signal under varied conditions.

Main Results:

• Successful generation of a micro-imaging-dedicated virtual phantom (μ-ViP) signal.
• Demonstrated benefit of μ-ViP for on-line quality control during real-time MRμI experiments.
• Established μ-ViP as a valuable tool for spectrometer performance monitoring.

Conclusions:

• The μ-ViP signal provides a stable reference for quantitative measurements in MRμI.
• This method enhances the reliability of real-time MRμI experiments.
• μ-ViP represents a significant advancement towards improved magnetic resonance signal quantification in small samples.