Intracytoplasmic Morphologically-selected Sperm Injection (IMSI)

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What is IMSI?

Intra-cytoplasmic morphologically-selected sperm injection (IMSI) is a technique in which our biologists will examine carefully the spermatozoids by using a microscope about five times more powerful than normal ones in "in Vitro" fertilisation laboratories. This technique enables us to choose the best quality sperm by magnifying 6000 times more than the conventional ICSI method. This improved ICSI technique displays some intracellular structures, such as vacuoles, that cause a destabilization of chromatin, allowing us to select spermatozoids without defects or those with fewer alterations in order to perform the sperm injection, therefore increasing our rates of implantation and pregnancy.

When is this technique recommended?

IMSI technique is recommended for all couples undergoing an "In Vitro" fertilization treatment with Intracytoplasmic sperm injection, but especially for those couples whose sperm samples show an oligo-terato-astenozoospermia. It is also recommended for those patients who have already undergone several "In Vitro" fertilization treatments without success.