Intracytoplasmic morphologically selected sperm injection (IMSI) is a sperm selection method used in intracytoplasmic sperm injection (ICSI). The technique involves using a microscope to view detailed images of the sperm under very high magnification (over x6000) to select the sperm to inject into an egg.
IMSI is a non-invasive test performed on a semen sample as an additional step in the ICSI process. The risks associated with the use of ICSI also apply to IMSI. However, IMSI does not carry any additional known risks for the person undergoing fertility treatment or the child born as a result of fertility treatment.