Replication Data for: Magnetic Dipole Imaging of Brain Tissue

This dataset contains magnetic field maps of brain tissue collected with a Quantum Diamond Microscope (QDM). Relevant details and the results based on this data are presented and discussed in this journal article: Kaub, L., Gilder, S. A., Fu, R. R., Maher, B. A., Maxemin, G., Kuan, A. T., Büttner, A., Milz, S., Schmitz, C. (2026). Magnetic dipole imaging of magnetite nanoparticles in brain tissue. RSC advances, 16(2), 983-994. There are three sets of QDM data in this repository, one for each set of samples: human brain samples, rat brain samples, and a magnetotactic bacteria sample. Each set contains folders for each sample and field of view (FOV). Rat brain data is further subdivided into polishes (see paper for details). For human and rat brain data, each folder contains two subfolders for the repeated map pairs (image 1 and 2). In each final subfolder, the common files are: B111dataToPlot.mat: Nearly raw QDM data containing remanence and induced magnetic field maps in the 111 diamond crystallographic direction. Resolution is 1.175 µm (no binning). Bz_uc0.mat: Bz data (vertical magnetic field component) computed from B111 data. Bz_uc0_sat.png: PNG image of Bz map with saturated color range (typically 2e-7 T). Provided for convenience. Can be replotted from Bz_uc0.mat. laser.jpg: optical light image of the same FOV as the QDM magnetic field map, illucidated by the QDM laser. ledImg.png: optical light image of the same FOV as the QDM magnetic field map, illucidated by the LED. QDM data was processed using QDMlab: https://github.com/HarvardPaleomag/QDMlab [Volk, M. W., Fu, R. R., Trubko, R., Kehayias, P., Glenn, D. R., & Lima, E. A. (2022). QDMlab: A MATLAB toolbox for analyzing quantum diamond microscope (QDM) magnetic field maps. Computers & Geosciences, 167, 105198.]. Please cite this dataset and the according publication if you make use of data from this dataset in any way.