Can 3D Ultrasound be Used as an Alternative to MRI to Assess Myometrial Invasion in Endometrial Cancer?

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    Imperial College London
Updated on 20 February 2021
3d ultrasound
lymph node metastasis


Aim: Assess the diagnostic accuracy of 3D Ultrasound, compared to MRI and final histology with respect to myometrial invasion of endometrial cancer.

This study will assess whether 3D ultrasound is accurate at predicting myometrial invasion aqnd lymph node metastasis of endometrial cancer. All patients will receive routine standard of care (MRI). The results of the 3D ultrasound will be compared to the MRI report and final histology.



Assess the diagnostic accuracy of 3D Ultrasound, compared to MRI and final histology with respect to myometrial invasion of endometrial cancer.


When a diagnosis of endometrial cancer is confirmed on biopsy, women get staged to assess the level of spread. Current gold standard is an MRI. A proportion of women, are unable to undergo or complete an MRI scan due to their morbid obesity or claustrophobia. To this end, many have assessed the role of ultrasound in staging endometrial cancer as a cheaper and easier alternative to an MRI. In the last 20 years there has been a rise in the use of 3D ultrasound as it has become commercially available. There is, however a paucity of data on the role of 3D ultrasound in the assessment of myometrial invasion and lymph node metastasis. This research project will assess whether 3D ultrasound is a safe, effective alternative to MRI to assess the depth of spread of womb cancer.

The study:

All women with suspected endometrial cancer will receive a pelvic (internal) ultrasound as per routine care. In addition to the normal 2D ultrasound, women will receive a 3D ultasound and images will be saved. This adds an additional 1-2 minutes scan time.

In those women with confirmed cancer on histology an MRI is performed to assess stage of cancer (current routine standard of care). This will include T1, T2, DWI and contrast enhanced sequences. Patients referred to Hammersmith Hospital from other trusts will also be able to undergo a 3D ultrasound if this was not already performed. Definitive management of endometrial cancer includes a hysterectomy and the surgical specimen will be examined for depth of myometrial invasion and lymph node involved (if removed). In the meantime, the saved 3D ultrasound images will be analysed and rendered to predict the stage of the endometrial cancer and lymph node involvement. The results of 3D ultrasound, and MRI will be compared against the stage found on the gold standard test (on histological examination).

Condition Endometrial Carcinoma, Disorder of uterus NOS, Uterine Cancer, Endometrial Hyperplasia, Endometrial Cancer, Uterine Disorders
Treatment 3D ultrasound
Clinical Study IdentifierNCT03207061
SponsorImperial College London
Last Modified on20 February 2021


Yes No Not Sure

Inclusion Criteria

All women presenting to rapid access gynaecology clinic with postmenopausal
bleeding or intermenstrual bleeding or referred with a confirmed diagnosis of
endometrial cancer

Exclusion Criteria

Anyone lacking capacity. <18years old. Pregnant
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