Ohio Rev. Code § 4774.09
At all times when an individual who is a radiologist assistant is providing direct patient care, the individual shall display in an appropriate manner the title "radiologist assistant" as a means of identifying the individual's authority to practice under this chapter.
In the case of an individual who is a student participating in an advanced academic program that must be completed to receive a license to practice as a radiologist assistant, as those programs are described in division (B)(3) of section 4774.03 of the Revised Code, when the individual is providing direct patient care or is otherwise involved with direct patient care under the program, the individual shall display in an appropriate manner the title "student radiologist assistant" or another appropriate designation as a means of identifying the individual as a student participating in the program.
R.C. § 4774.09