Provided is an ultrasonic cross-sectional image measurement apparatus that has a living body pressing device and that is capable of performing measurement on a cross-sectional image, of an organ in a living body, corresponding to a change in pressing pressure on the living body at a portion thereof being pressed by the living body pressing device. The ultrasonic cross-sectional image measurement apparatus is provided with: an annular pressing band (40) that includes an ultrasonic wave-transmissive board material (26)； a sealed container (16) that has an opening (24) closed by the ultrasonic wave-transmissive board material (26) and that is filled with oil (28)； an ultrasonic probe (14) that is stored in the sealed container (16) and that gives/receives an ultrasonic wave to/from a brachial artery (29a) through the ultrasonic wave-transmissive board material (26)； and an ultrasonic signal processing unit (84) that generates an ultrasonic cross-sectional image on the basis of the ultrasonic signal received by the ultrasonic probe (14). Accordingly, a cross-sectional image of the inside of a brachium (29) being pressed by a living body pressing device (18) is accurately obtained.L'invention concerne un appareil de mesure d'image en coupe transversale ultrasonore qui présente un dispositif de compression de corps vivant et qui est apte à effectuer une mesure sur une image en coupe transversale, d'un organe dans un corps vivant, correspondant à un changement de pression de compression sur le corps vivant au niveau d'une partie de celui-ci qui est comprimée par le dispositif de compression de corps vivant. L'appareil de mesure d'image en section transversale ultrasonore est pourvu : d'une bande de compression annulaire (40) qui comprend un matériau de panneau transmettant les ondes ultrasonores (26)； d'un contenant étanche (16) qui présente une ouverture (24) fermée par le matériau de panneau transmettant les ondes ultrasonores (26) et qui est rempli d'huile (28)； une son
