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. 2022 Nov 14;18:403. doi: 10.1186/s12917-022-03487-y

Table 4.

Correlation coefficients between testicular blood flow waveform (distal -supra- branch) measurements and semen analysis parameters in MEL dogs (n = 6)

Paired measurement Pearson Correlation coefficients
DSTa PI × Scrotum circumference -0.724*
DSTa PI × Testicular volume -0.421**
DSTa PI × Intra testicular colored area -0.405*
DSTa PI × Testosterone -0.627**
DSTa PI × Estradiol 17-ß 0.711**
DSTa PI × NO -0.499
DSTa PI × PSV -0.742**
DSTa PI × EDV -0.776*
DSTa RI × Scrotum circumference -0.774
DSTa RI × Testicular volume -0.848*
DSTa RI × Intra testicular colored area -0.624*
DSTa RI × Testosterone -0.455**
DSTa RI × Estradiol 17-ß 0.921**
DSTa RI × NO -0.475*
DSTa RI × PSV -0.844*
DSTa RI × EDV -0.741*

*Means significant at 5%

**Means significant at 1%

PI pulsatility index, RI resistance index, PSV peak systolic velocity, EDV end diastolic velocity, NO nitric oxide, and DSTa Distal supra testicular artery