<prompt> ACRTI-RADS scan for thyroid nodule characteristics include all except:MarginEchogenicityVascularityShape  <response>: Ans: c VascularityColl Radiol 2017 May, 145, Page 587-595ACR TI-RADS is a reporting system for thyroid nodules on ultrasound proposed by the American College of Radiology.It is based on the following characteristic of the lesion:CompositionEchogenicityShapeMarginEchogenic fociRecommendationsTR1: No FNAC requiredTR2: No FNAC requiredTR3: 1.5 cm follow up, 2.5 cm FNACFollow up: 1, 3 and 5 yearsTR4: 1.0 cm follow up, 1.5 cm FNACFollow up: 1,2,3 and 5 yearsTR5: 0.5 cm follow up, 1.0 cm FNACAnnual follow up for up to 5 years 