1. New ACR-sponsored CPT codes approved by the AMA. American College of Radiology Website. Available at: https://www.acr.org/Advocacy-and-Economics/Advocacy-News/Advocacy-News-Issues/In-the-November-2-2018-Issue/New-ACR-Sponsored-CPT-Codes-Approved-by-the-AMA. Accessed August 20, 2019.
2. Most recent changes to the CPT® Category III Codes document. American Medical Association Website. Available at: https://www.ama-assn.org/system/files/2019-03/cpt-category3-codes-long-descriptors.pdf. Accessed August 20, 2019.
3. Current Procedural Terminology; a primer;Hirsch;J Neurointerv Surg,2015
4. RSNA and ACR to collaborate on landmark medical 3D printing registry. Radiological Society of North America Website. Available at: https://www.rsna.org/en/news/2019/August/3D-Printing-Registry. Accessed August 20, 2019.
5. Radiological Society of North America (RSNA) 3D printing Special Interest Group (SIG): guidelines for medical 3D printing and appropriateness for clinical scenarios;Chepelev;3D Print Med,2018