Figure 6

(a) 10-exposure X-ray phase contrast image with the self-injection based betatron source. (b) Lineout of the red square region in (a). A dip of the gastrointestinal wall with a 15.8-µm width (FWHM) can be measured with a contrast of 0.38.

(a) 10-exposure X-ray phase contrast image with the self-injection based betatron source. (b) Lineout of the red square region in (a). A dip of the gastrointestinal wall with a 15.8-µm width (FWHM) can be measured with a contrast of 0.38.