Semen analysis is a very important step before any artificial insemination is carried out. Semen is a fluid containing sperm cells, which is released during ejaculation. A normal sperm count is above 20 million sperm per milliliter of semen.
We used a digital holographic microscope DHM to analyse human sperm morphology. Length, width and thickness of the sperm cell head were determined by an operator, using the images produced by the software provided with the DHM. We developed an algorithm to replace part of the activities of the operator.
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All rights reserved. For the first time, scientists have successfully plotted the paths of sperm in 3-D, revealing corkscrew-like trajectories and "hyperactive" swimmers. Based on a sensor chip not unlike those in smartphones and digital cameras, the new technology could lead to better male fertility testing and insights into the behavior of other microorganisms, researchers say. Tiny and fast—even for microorganisms—human sperm are notoriously difficult to study.
Update: A previous version of this article contained quotes from an expert whose credentials are now in question. We have reached out to him for confirmation of those credentials and have not heard back. You can read Gizmodo's investigation hereand his response here.
By Jessica Hamzelou. How are the little swimmers doing? Men often find it embarrassing to provide a semen sample at a clinic, says Yoshitomo Kobori of the Dokkyo Medical University Koshigaya Hospital in Japan.
How much do you know about sperm cells? You know guys make a lot of them--but how many? You know they're small--but how small?
A semen analysis plural: semen analysesalso called " seminogram "  evaluates certain characteristics of a male's semen and the sperm contained therein. It is done to help evaluate male fertilitywhether for those seeking pregnancy or verifying the success of vasectomy. Depending on the measurement method, just a few characteristics may be evaluated such as with a home kit or many characteristics may be evaluated generally by a diagnostic laboratory. Collection techniques and precise measurement method may influence results.
Cilia and flagella are cell machines that power hydrodynamic forces by fast beating. Spermatozoa are single cells with in most cases a single flagellum and are good cell models to study how flagellar movements are regulated and linked to cell behavior. In addition, the assessment of sperm motility is an important diagnostic tool for evaluating male fertility in human reproductive medicine, and in livestock and fisheries sciences.