Those involved in anorectal ultrasound know that it is always a problem when scanning the anterior anal canal wall of the woman, the paper “Perineum compression during EAUS enhances visualization of anterior anal sphincter defects” By  M. A. Titi, J. T. Jenkins, A. Urie and R. G. Molloy (Colorectal Disease, 2009; 11, 625–630) review this subject and offers a simple trick to improve results.