Figure 2

(a) Lateral PSF measurement through 2 mm thick tissue phantoms (μs = 7.63 /mm, g factor = 0.9013) for iterations 1, 3, 5, 7 and 9.To normalize the peak intensity, the PSF data sets were multiplied by 6.5, 2, 1.5 and 1.5 for iteration 1, 3, 5 and 7, respectively. (b) Axial PSF measurements for iterations 1, 5 and 9. The PSF data for iteration 1 and 5 was multiplied by 6.5 and 1.5, respectively. (c–e) Gaussian fitting of the measured PSF. (f) Fitted transverse FWHM and simulation (mean values and standard deviation). (g) Fitted axial FWHM and simulation (mean values and standard deviation). (h) Measured focus to background ratio and simulation (mean values and standard deviation). (i) Measured ultrasound modulated light power and simulation (mean values and standard deviation). Scalebar: 10 microns. Colorbar in arbitrary units.