Doppler imaging of orbital vessels in the assessment of the activity and severity of thyroid-associated orbitopathy

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Journal of Ultrasonography

Polish Ultrasound Society (Polskie Towarzystwo Ultrasonograficzne)

Subject: Medicine

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ISSN: 2084-8404
eISSN: 2451-070X

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VOLUME 15 , ISSUE 63 (December 2015) > List of articles

Doppler imaging of orbital vessels in the assessment of the activity and severity of thyroid-associated orbitopathy

Dorota Walasik-Szemplińska * / Magdalena Pauk-Domańska / Urszula Sanocka / Iwona Sudoł-Szopińska

Keywords : Graves’ disease, Graves’ ophthalmopathy, color Doppler imaging, ophthalmic artery

Citation Information : Journal of Ultrasonography. Volume 15, Issue 63, Pages 388-397, DOI: https://doi.org/10.15557/JoU.2015.0036

License : (CC BY-NC-ND 4.0)

Received Date : 10-August-2015 / Accepted: 23-September-2015 / Published Online: 13-September-2016

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ABSTRACT

Patients with symptoms of thyroid-associated orbitopathy are classifi ed on the basis of the clinical activity score (CAS) proposed by Mourits in 1989. Despite its undoubted clinical usefulness, it has several limitations which can decide about the success or failure of the implemented treatment. Numerous reports mention the presence of hemodynamic changes in orbital and bulbar vessels in the course of an orbitopathy called Graves’ disease. The usage of Doppler sonography in the diagnosis of numerous ophthalmologic vascular diseases suggests that changes in thyroid-associated orbitopathy can correlate with the activity and severity of the disease. This paper presents the overview of the state-of-the-art concerning the usefulness of Doppler imaging in patient selection for the treatment of thyroid-associated orbitopathy. It has been shown that the velocity of blood fl ow in the superior ophthalmic vein, which is the most susceptible to changes in anatomical conditions in the enclosed orbital space, decreases in a statistically signifi cant way. A decrease in blood fl ow velocity is closely associated with the active stage of the disease whereas reverse fl ow or its absence attest to severe orbitopathy and constitute a risk factor of ocular neuropathy. The activity of the infl ammatory process in the eyeball is also confi rmed by an increase in peak systolic velocity (PSV) in the ophthalmic artery and central retinal artery as well as end-diastolic velocity (EDV) in the ophthalmic artery. Resistance index values decrease in the ophthalmic artery and increase in the central retinal artery mainly in cases with considerable expansion of the extraocular muscles. 

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