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What is the difference between IMSI and conventional ICSI?

By Carmen Ochoa Marieta M.D., Ph.D., M.Sc. (gynecologist).
Last Update: 07/29/2022

Both are laboratory techniques that consist of injecting a spermatozoon into an egg. These spermatozoa are selected using morphological criteria, which are evaluated under the microscope.

In IMSI the microscope has 6000 magnification and in ICSI 400, so the fundamental difference between the two techniques lies in the sperm selection based on morphology.

 Carmen Ochoa Marieta
Carmen Ochoa Marieta
M.D., Ph.D., M.Sc.
Gynecologist
Bachelor's Degree in Medicine from the Basque Country University. PhD in Medicine & Surgery from the University of Murcia. Currently, she is the director of the Assisted Reproduction Unit of Centro de Estudios para la Reproducción (CER SANTANDER) in Santander, Spain, as well as the director of the Diagnostic Unit of Human Assisted Reproduction in Bilbao.
License: 484805626
Gynecologist. Bachelor's Degree in Medicine from the Basque Country University. PhD in Medicine & Surgery from the University of Murcia. Currently, she is the director of the Assisted Reproduction Unit of Centro de Estudios para la Reproducción (CER SANTANDER) in Santander, Spain, as well as the director of the Diagnostic Unit of Human Assisted Reproduction in Bilbao. License: 484805626.