Master the ARRT CT registry and advance your imaging career.
The Computed Tomography (CT) certification is a post-primary credential offered by the American Registry of Radiologic Technologists (ARRT). It recognizes technologists who have demonstrated the specialized knowledge and clinical skills required to perform cross-sectional CT imaging safely and competently. Earning the credential signals to employers, physicians, and patients that you meet a nationally recognized standard for practice in computed tomography.
ARRT develops and administers the CT examination and sets the eligibility, ethics, and continuing-education requirements that govern the credential. As a post-primary pathway, the CT exam is intended for individuals who already hold a qualifying primary certification (such as Radiography, Nuclear Medicine Technology, or Radiation Therapy) and who complete the structured education and documented clinical experience that ARRT requires before applying.
The exam is a computer-based, multiple-choice test delivered at approved testing centers. Its content is organized around ARRT's published CT content specifications, spanning patient care, safety and dose management, image production, and CT procedures across body regions. Exact question counts, scoring, and the current content outline are published by ARRT and can change, so candidates should always confirm details at arrt.org.
Mapped to the ARRT content outline.
Patient assessment, communication, consent, monitoring, and safe management before, during, and after the CT exam.
Types of contrast agents, routes and dosing, screening for risk factors, and recognizing and responding to reactions.
ALARA principles, patient and personnel protection, and CT dose optimization for varied populations.
Understanding CTDI, DLP, dose-reduction techniques, and routine QC that keeps scanners performing to standard.
CT physics, data acquisition, scan parameters, and how technique choices affect the resulting image.
Reconstruction algorithms, windowing, multiplanar and 3D post-processing, and image quality evaluation.
Data management, PACS workflow, DICOM handling, and protecting patient information throughout the imaging chain.
Anatomy, protocols, and positioning for neurologic, thoracic, abdominopelvic, musculoskeletal, and special procedures.
Certified radiologic technologists and other qualifying imaging professionals - most commonly registered radiographers, along with eligible nuclear medicine technologists and radiation therapists - who want to specialize in cross-sectional CT imaging and formalize that expertise with a recognized post-primary credential.
Candidates generally must hold a qualifying ARRT primary certification and complete ARRT's required structured education and documented clinical experience in CT before applying. Exact eligibility, structured-education, and clinical-competency requirements are set by ARRT and should be verified at arrt.org.
Create a free profile now — you'll be ready to jump in the moment Computed Tomography prep launches, and you can start with radiography or CIIP today.
Official exam details and eligibility: arrt.org