Magnetic Particle Imaging in Human Subjects

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Nanotechnology

Background:

• Magnetic Particle Imaging (MPI) is a tracer-based medical imaging modality.
• MPI offers high sensitivity and quantitative tomographic imaging of magnetic nanoparticles.
• Current limitations exist in medical imaging for applications requiring tracer specificity and extended imaging windows.

Purpose of the Study:

• To demonstrate Magnetic Particle Imaging (MPI) in human subjects for the first time.
• To evaluate MPI's capability for longitudinal visualization of lymphatic drainage.
• To establish MPI as a viable clinical tool for medical imaging.

Main Methods:

• Developed and verified a novel clinical MPI imager, including safety testing.
• Administered magnetic tracer subcutaneously in the scalp and foot of two human subjects.
• Performed quantitative and longitudinal imaging of lymphatic drainage over six months.
• Validated findings in a mouse model and benchmarked MPI against SPECT using phantom models.

Main Results:

• Achieved quantitative and longitudinal visualization of lymphatic drainage in human subjects for up to six months.
• Demonstrated successful translation of MPI from preclinical to human applications.
• Confirmed the safety and efficacy of the novel clinical MPI imager.

Conclusions:

• Magnetic Particle Imaging (MPI) has been successfully demonstrated in human subjects.
• MPI provides a new capability for longitudinal tracer imaging in medicine.
• MPI has the potential to enhance diagnosis, interventions, and treatment monitoring across various clinical applications.