Editing Gynecologic ultrasonography (section)

==Routes==
[[File:Transvaginal ultrasonography device.png|thumb|Device for both [[vaginal ultrasonography]] and [[abdominal ultrasonography]]]]
[[File:Mirena in optimal place - schematic.png|thumb|[[Transvaginal ultrasonography]] to check the location of an [[intrauterine device]] (IUD)]]

The examination can be performed by [[transabdominal ultrasonography]], generally  with a full bladder which acts as an [[acoustic window]] to achieve better visualization of pelvis organs, or by [[transvaginal ultrasonography]] with a specifically designed vaginal transducer. Transvaginal imaging utilizes a higher frequency imaging, which gives better resolution of the ovaries, uterus and [[endometrium]] (the fallopian tubes are generally not seen unless distended), but is limited to depth of image penetration, whereas larger lesions reaching into the abdomen are better seen transabdominally.  Having a full bladder for the transabdominal portion of the exam is helpful because sound travels through fluid with less attenuation to better visualize the uterus and ovaries which lies posteriorly to the bladder.  The procedure is by definition [[Invasiveness of surgical procedures|invasive]] when performed transvaginally. Scans are performed by health care professionals called sonographers, or gynecologists trained in ultrasound.