Conventional MRI assumes one‐photon excitation. That is, for each nuclear spin, a single photon accompanies the transition between energy states. This photon must resonate near the Larmor frequency. In contrast, multiphoton resonances generate MRI signals by using multiple magnetic field frequencies, none of which is near the Larmor frequency. Only the total energy absorbed by a spin must correspond to the Larmor frequency.

Select Publications

• Victor Han, Chunlei Liu. “Multiphoton magnetic resonance in imaging: A classical description and implementation” Magnetic Resonance in Medicine, 2020

• Victor Han, Jianshu Chi, Tanya Deniz Ipek, Jingjia Chen, Chunlei Liu. “Pulsed selective excitation theory and design in multiphoton MRI” Journal of Magnetic Resonance, 2023

• Tanya Deniz Ipek, Victor Han, Julian Adolfo Maravilla, Michael Lustig, Chunlei Liu. “Multiphoton simultaneous multislice imaging” Magnetic Resonance in Medicine, 2024

Last updated: 2025-09-30