Work

Improved image quality with a receive-only coil for the Bruker MPI scanner

Year: 2024

Type: article

Abstract: Sensitivity and resolution in MPI depend, amongst others, on the used scanner hardware and the iron concentration in the measured sample. Typically, to reconstruct samples with low iron amount, in the system matrix (SM) based reconstruction, only low frequency components with high signal-to-noise ratio are used, which limits the achievable spatial resolution. Here, Bruker’s preclinical MPI scanner is used to compare the image quality of samples at decreasing iron concentrations measured with either the built-in transmit-receive (TxRx) coil or a dedicated smaller receive-only (Rx) coil. The results show that the Rx coil allows visualization of significantly lower iron concentrations. Additionally, the image quality of measurements with the TxRx coil can be enhanced by using the SM of the Rx coil for reconstruction, which is beneficial for objects that do not fit into the Rx coil.

Source: International journal on magnetic particle imaging

DOI: 10.18416/ijmpi.2025.2503021

Authors: Schrank, Franziska, Radermacher, Harald, Schulz, Volkmar

Institutions: RWTH Aachen University, Fraunhofer Institute for Digital Medicine

Language: English

Topic: Characterization and Applications of Magnetic Nanoparticles

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Deutsche Forschungsgemeinschaft

Award: Mehrfrequenz Magnetic Particle Imaging