Testicular blood flow in monkeys as measured by xenon clearance and radioactive microspheres

Testicular blood flow was measured in monkeys using a ¹³³xenon clearance technique and a ¹⁴¹cerium microsphere entrapment technique. The clearance procedure provided values that tended to be lower than those obtained using the microspheres, was technically less difficult, and has the advantage of being a clinical tool. The microsphere entrapment technique provides the simultaneous evaluations in numerous tissue sites but requires the removal of the tissues to be evaluated. The xenon clearance technique appears to be better suited for evaluations in nonhuman primates.