Fig. 2
From: In vitro study of the embolic characteristics of imipenem/cilastatin particles
Particle shape is classified as round (a), elliptical (b), or polygonal (c). A polygonal shape is one with three of more angles ≤90°, with any other shapes defined as either round or elliptical. An elliptical shape is taken as one with a short axis/long axis <0.75, and a round shape as one with a short axis/long axis ≥0.75. a Round (long axis/short axis = 0.92) (40×). b Elliptical (long axis/short axis = 0.58) (40×). c Polygonal (40×)