To be a cardiac sonographer, you have to be an ultrasound technologist to begin with.

Tuition and fees for ultrasound programs vary greatly, depending on the length of the program, type of degree or certificate pursued, and the type of school (such as public university, trade school, community college, or hospital training program). For example, a one-year diagnostic medical sonography certificate program at a state university could cost between $3,000 and $15,000, depending on whether you're a resident of the state. A 16-20 month training program at a private school may run up to $32,000 or more.

Vascular sonography is one of the advanced certifications that you would go for after graduating from ultrasound school.

Go online and see what schools and programs are available in your area. A local junior college should have an allied health catalogue which would list these schools.

Good luck!