Fig. 1

Example of an insertion into a porcine vertebra in vivo. DRS readings and associated imaging of an anterior fiber-optic K-wire breach. First and second columns depict axial and sagittal computed tomographies of each position, respectively. The third column depicts the measured spectra at each position in red and corresponding fitted spectra in blue. The fourth column shows the median values of blood content and fat fraction with error bars indicating min and max values. The fifth column represents the variation of reduced scattering amplitude at 800 nm