Vet recommendations for dog ultrasound?

Hi everyone, my dog’s blood work recently came back with mild elevation in his liver levels. The vet said that I could either do an ultrasound or check the levels again in 6 months.

However, my vet doesn’t do ultrasounds. Has anyone gotten their pet an ultrasound? If so, where did you go and what is the approximate cost? I’m located in SE Houston, if that helps.

Thank you!