Fig. 1
From: Ultrasound microflow patterns help in distinguishing malignant from benign thyroid nodules

Microflow patterns of thyroid nodules in diagrams, cSMI and mSMI. a-c shows the crab claw-like pattern. d-f shows the root hair-like pattern. g-i shows the wheel-like pattern. j-l shows the arborescent pattern. m–o shows the scattered-dot pattern. p-r shows the circumferential pattern. s-u shows the single penetrating vessel pattern