Superior thyroid artery RI was measured as 0.5470+-0.07, inferior thyroid artery RI was measured as 0.5370+-0.06 on color doppler US with subjects with normal vitamin D; superior artery RI was 0.6219+-0.06 and inferior thyroid artery RI was 0.6172+-0.06 in subjects with vitamin D insufficiency (p=0.001 and P=0.001) (Fig.1).
Superior thyroid artery mPSV was shown to effectively discriminate the underlying cause of thyrotoxicosis.6 Intra-parenchymal blood supply is suggested to increase on color Doppler ultrasound examination in initial and peak stages of diffuse autoimmune thyroiditis.
The average mPSV value of superior thyroid artery in the group with normal vitamin D level was higher than in the group with lower vitamin D level (p=0.034).
(3) Superior thyroid artery commonly arises from the external carotid artery.
Moreover the intimate relationship of external laryngeal nerve with superior thyroid artery and recurrent laryngeal nerve with inferior thyroid artery should be kept in mind while ligating the thyroid vessels.
CCA Common Carotid Artery ECA External Carotid Artery ICA Internal Carotid Artery STA Superior Thyroid Artery SCM Sternocleidomastoid Muscle SH Sternohyoid OH Omohyoid SMG Submandibular Gland CCA Common Carotid Artery ECA External Carotid Artery ICA Internal Carotid Artery STA Superior Thyroid Artery SLA Superior Laryngeal Artery SCM Sternocleidomastoid Muscle TG Thyroid Gland SMG Submandibular Gland DOI: 10.14260/jemds/2014/2691
Bergma & Thomson, reported that superior thyroid artery
is generally considered to be present in 100% of cases and its absence has only been reported once.
Using the Test t of Student (Table I) it was not observed a significant difference (p [menor que o igual a] 0,05) among the pairs of the average of the distances between the origins of the lingual artery with the facial artery and the superior thyroid artery of both sides.
Using the Test t of Student it was observed that among the pairs of the average between the origin of the lingual artery with the facial artery and the superior thyroid artery of both sides not showed a significant difference (p [menor que o igual a] 0,05), however, the average of the distances of the origin of the lingual artery with the bifurcation of the common carotid artery was significant p = 0,008, what indicates that on the left side the lingual artery is more inferior than on the right side.