Enhancement of photoacoustic tomography in the tissue with speed-of-sound variance using ultrasound computed tomography*
Cheng Ren-Xiang, Tao Chao, Liu Xiao-Jun
       
The relationship between the FWHM of the absorbers in the image and the fan-angle 2 γ m. The dashed line illustrates the actual diameter 2.6 mm of the absorbers. The FWMH is determined according to the profile shown in Fig. 3(b) . The SOS of the high SOS region is 1455 m/s.