Iowa Code § 136C.14: Qualified operators — credentials available upon request.

1. A person, other than a licensed professional, shall not operate a radiation machine or use radioactive materials for medical treatment or diagnostic purposes unless that person has completed a course of instruction approved by the department or has otherwise met the minimum training requirement established by the department.

2. A person, other than a licensed professional, who operates a radiation machine or uses radioactive materials for medical treatment or diagnostic purposes shall make available upon request the credentials which indicate that person’s qualification to operate the machine or use the materials. A person who owns or controls the machine or materials shall not employ a person to operate the machine or use the materials for medical treatment or diagnostic purposes except as provided in this section.