Fig. (3) Mean diameter of the lumen at positions mp1-mp5 (as measured in µm). a. 3D surface model of the great intrathoracic arteries from right. b. 3D surface model of the great intrathoracic arteries from left. mp1 = measuring position 1; mp2 = measuring position 2; mp3 = measuring position 3; mp4 = measuring position 4; mp5 = measuring position 5. Scalebars = 200µm.