How to Quantify Penile Corpus Cavernosum Structures with Histomorphometry: Comparison of Two Methods

Table 1

Smooth muscle surface density of corpus cavernosum of Wistar Kyoto normotensive animals (WKY) and spontaneously hypertensive rats (H) as measured by two different morphometrical methods.

Observer	WKY	H	P value
A
Point-counting method (%)	10.30 3.08	13.28 1.33	0.012
Color-based segmentation method (%)	09.18 2.72	11.48 1.76	0.038
P value	0.119	0.001
B
Point-counting method (%)	11.08 2.27	13.94 1.45	0.003
Color-based segmentation method (%)	07.85 0.93	10.83 2.34	0.002
P value	0.001	0.002

Data are shown as mean standard deviation. Means were considered significantly different if P < 0.05.