14. Female pelvis hysterosalpingogram (HSG), AP projection
To perform this study the tip of a catheter is placed within the external os
of the uterus, and radiopaque contrast material is injected to fill the lumens
of the cervical canal, uterine cavity, and fallopian (uterine) tubes.
Normally, when these are fully patent, the injected contrast will spill from
the infundibula of the fallopian tubes into the peritoneal cavity. Spillage
of contrast demonstrates that a tube is patent, and marks the completion of
a normal HSG. This image is one of a sequence from a normal HSG and was obtained
prior to spillage of contrast. It was selected because intraperitoneal contrast
can obscure the anatomic detail of the fallopian tubes.
