Gynae BT_Lucknow_2018

Bladder reference point

Bladder point is obtained in following way : • Foley’s catheter balloon is filled with 7 cm 3 of radio-opaque fluid • Catheter is pulled downward to bring the balloon against the urethra • On lateral radiograph, reference point is at the posterior surface of balloon • On frontal radiograph reference point is taken at the centre of balloon