Table 1. Histomorphometric linear (1D) and bidimensional (2D) measured parameters.

Linear (1D) measured parameters (μm)
External artery diameter (ED)	Widest distance between external elastic laminas, perpendicular to the greatest longitudinal axis
Great longitudinal axis (GLA)	Longest distance between external elastic laminas
External perimeter (EP)	Outline of the external elastic lamina
Internal perimeter (IP)a	Outline of the internal elastic lamina
Lumen perimeter (LP)	Outline of the inner aspect of the intima
Bidimensional (2D) measured parameters (μm2)
Total area (TA)	Area encompassed by the external perimeter
Internal area (IA)a	Area encompassed by the internal perimeter
Lumen area (LA)	Area encompassed by the lumen perimeter

^aAssessed only on sections stained with Movat Russell pentachrome (study 2).