I am trying to optimize a web site which is managed by typo3. There is a page on this website, let's call it seminars. When I ask google to search for this Website by entering "Big Company seminars", I receive a result which looks like that:
Logo Seminars - Big company
The string "Logo" should not be displayed there. So I checked the source code and found that:
<title>Seminars - Big Company</title>
<a href="/start"><img src="BigCompanyLogo.png" alt="Logo Seminars"></a>
It looks like Google takes the alternative text of this image and uses it as the title for their search results.