IMSI uses a high power light microscope, enhanced by digital imaging, to magnify a sperm sample more than 6,000 times its normal size.
This enables the embryologist to detect problems and subtle structural alterations that a normal microscope cannot see. The embryologist then selects the sperm with the most normally-shaped nuclei and highest level of motility.
The procedure is very similar to ICSI. Fertility drugs are given to the female to stimulate egg production in the ovaries. Once the leading follicle in an ovary grows to 17-22mm, the eggs are ready to be collected.
The female is given a hormone injection of human chorionic gonadotrophin (hCG) around 36 hours before the egg collection procedure takes place. The hCG injection stimulates the eggs to mature.
Under light sedation, the eggs are collected using an ultrasound guided vaginal probe to locate the follicles and aspirate its contents. The eggs are then placed in culture in our state of the art laboratory. In the laboratory, the embryologists will inject the one carefully selected sperm into each egg.