Follicular Tracking Ultrasound Scan (Transvaginal Scan)

Follicle Tracking Scan

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Follicular Tracking Ultrasound Scan 

Follicular tracking is being used to identify the best time to get pregnant by identifying the time of ovulation on women with regular or irregular cycles and therefore determine the best conception time.

Follicular monitoring can also be used during in-vitro fertilization (IVF) assessment and timing.

The scan employs ultrasound to assess ovarian follicles at regular intervals and therefore help the clinician to understand when you ovulate and when egg extraction is best performed. The series of ultrasound scans start normally at the 10th day of the cycle.

What is an Ovarian Follicle?

An ovarian follicle (also known as a Graafian follicle in its mature state) secretes hormones that regulate the menstrual cycle. During the menstrual cycle at least one of the ovarian follicles will become dominant and will release an egg to be fertilised. After releasing the egg the ovary turns into a corpus luteum.

What is the purpose of this follicle tracking ultrasound?

Assess the thickness of the endometrium that needs to be 7mm plus to be suitable for pregnancy to implant

Assess follicular growth and ovulation. For ovulation to occur the follicle needs to reach between 18-24mm

Reasons for having a follicular scan include:

Having IVF treatment and your doctor wants to know the size of the follicles and endometrial thickness.

You have regular cycles and have been trying to fall pregnant for several months without success.

You have irregular cycles and want help to determine the best time to conceive.

What is included with this follicular ultrasound scan?

Ultrasound report with images.


No preparation is required for this follicular scan.


What should I expect during the follicular ultrasound scan?

This is a transvaginal ultrasound Scan:

After you empty your bladder, you will be asked to remove your trousers/skirt and your underwear. You will lie on the examination couch, cover yourself with the cover provided and a small transducer will be inserted into the vagina. This internal ultrasound scan is similar to a gynecologic exam but the ultrasonic transducer is however significant smaller than a speculum used in a Pap test.

The transducer will be covered with a protective cover a small amount of gel will be placed on the tip and will be inserted into the vagina. Only a few inches of the transducer will be inserted into the vagina. The transducer will be moved in different directions to obtain the best images.

What will I experience during and after the follicle ultrasound scan procedure?

Although the transvaginal/internal examination is usually performed to find a cause for pelvic pain, the sonogram itself should not be painful but you might feel a tiny amount of discomfort and pressure. An internal ultrasound scan is usually more comfortable and better tolerated than a gynecologic examination.

These ultrasound scan examinations are usually completed within 20 minutes.

After an ultrasound scan examination, you should be able to resume your normal activities immediately.

Follicular Scan Cost

We believe that ultrasound scans should be affordable and the cost of the follicular scan in London should not be a limiting factor on your decision of getting a faster diagnosis and better and quicker treatment. You will, therefore, find the price of our follicular ultrasound surprisingly affordable.

Is it easy to make an appointment?

Making an appointment at International Ultrasound Services for a pelvic ultrasound scan is simple. We should be able to arrange an appointment at a convenient time for you. Same day appointments might also be available if you need your scan results quickly.


What happens after the scan?

We will provide a full report with your results that you will be able to share with your GP or other doctors.