It is generally possible and often routine to undergo an ultrasound examination while menstruating. This medical imaging procedure is commonly performed during a woman’s period and typically does not require rescheduling.
Understanding Ultrasounds During Menstruation
Having an ultrasound during menstruation is common and can be medically necessary, depending on the specific reason for the scan. Two primary types of pelvic ultrasounds are relevant: abdominal and transvaginal. Both are feasible even with menstrual bleeding.
An abdominal ultrasound involves a sonographer moving a transducer, or small probe, across the lower abdomen. A clear gel is applied to the skin to facilitate image production. For this scan, a full bladder is often required, as it helps provide clearer images of the pelvic organs and shifts bowel out of the way.
A transvaginal ultrasound offers more detailed views of the pelvic structures, including the uterus and ovaries, as the transducer is positioned closer to these organs. During this procedure, a narrow, lubricated probe is gently inserted into the vagina. This scan is typically performed with an empty bladder for patient comfort.
Impact of Your Period on Ultrasound Results
For many common gynecological conditions, such as ovarian cysts or uterine fibroids, menstruation typically does not significantly obscure ultrasound findings. Sonographers are trained to interpret images regardless of menstrual flow, and modern ultrasound machines are equipped with advanced software that can help filter out menstrual blood to produce clear images. Diagnostic accuracy for detecting these abnormalities generally remains high.
However, the stage of the menstrual cycle can be highly relevant for specific evaluations, particularly when assessing endometrial thickness or issues related to the uterine lining.
For instance, to obtain the clearest view of the uterine lining and to detect subtle abnormalities like polyps or fibroids within the uterine cavity, healthcare providers often prefer to perform the scan shortly after the period has finished, typically between day 5 and day 10 of the menstrual cycle. During this time, the uterine lining is at its thinnest, allowing for optimal visualization. Conversely, just before a period, the uterine lining is thicker, which can make it more challenging to identify small polyps or other causes of abnormal bleeding. In some cases, such as investigating causes of abnormal bleeding, the ultrasound may be intentionally scheduled during menstruation to observe the condition in real-time.
Preparing for Your Appointment
Preparing for an ultrasound appointment while on your period involves a few practical considerations to ensure comfort and a smooth procedure. It is helpful to wear loose-fitting, comfortable clothing that can be easily adjusted or removed. If you are using a tampon, you will need to remove it before a transvaginal ultrasound.
Communicating with the sonographer about being on your period is advisable. Follow specific instructions regarding bladder fullness, as these vary depending on whether an abdominal or transvaginal scan is planned. For abdominal scans, a full bladder is typically required, while for transvaginal scans, an empty bladder is often preferred.