Make sure you find an accredited ultrasound program. If you go to a program which is not accredited (on line courses), you cannot take your license exams until you have worked as a sonographer for one full year. You will have a hard time finding a job as a sonographer, if you do not have an ultrasound license. These programs put you between a rock and a hard place.
Here is a list of accredited programs in Michigan. You can go to the site below and search "Michigan" and "diagnostic medical sonographer." There are links with additional information on each school.
Delta College - University Center , MI
Henry Ford Hospital - Detroit , MI
Jackson Community College - Jackson , MI
Lansing Community College - Lansing , MI
Oakland Community College-Southfield - Southfield , MI