ARRT Limited Scope study guide
ARRT Limited Scope · Work through your exam, one topic at a time.
The ARRT Limited Scope of Practice in Radiography credential is a pathway for people who perform a restricted set of radiographic procedures under state rules rather than holding full radiography certification. Candidates typically work in clinics, urgent care, or orthopedic settings where state law defines a limited scope of practice, and they pursue this credential to demonstrate entry-level competence in the core areas of patient care and safety, radiation protection and equipment operation, image production and evaluation, and anatomy and positioning. The ARRT Limited Scope study guide has 5 sections and about 1,447 words.
01Patient Care and Safety
Patient care on the limited scope exam centers on patient identification , communication , body mechanics and transfer , immobilization , and medical emergencies . Know the two-identifier rule for identification and the elements of informed consent (procedure, risks, benefits, alternatives, right to refuse).
310 words, about 2 min02Radiation Protection and Equipment Operation
This domain covers dose units , ALARA , beam restriction , gonadal shielding , exposure factors , and equipment checks . Know the difference between exposure (roentgen), absorbed dose (gray/rad), equivalent dose (sievert/rem), and effective dose.
276 words, about 1 min03Image Production and Evaluation
Image production ties together exposure factors (kVp, mAs, SID, OID), density/brightness , contrast , recorded detail , and distortion . kVp controls penetration and contrast scale; mAs controls quantity of photons and density.
275 words, about 1 min04Anatomy and Positioning of the Chest, Extremities, and Spine
Know landmark anatomy for each region. Chest: clavicles, scapulae, lung fields, heart borders; the PA chest uses a 72-inch SID to reduce magnification, with the patient upright and shoulders rolled forward.
290 words, about 1 min05Anatomy and Positioning of the Skull, Abdomen, and Pelvis
Skull positioning relies on landmark lines : the orbitomeatal line, the interpupillary line, and the midsagittal plane. Know common projections such as PA, lateral, and Townes, and what each demonstrates.
296 words, about 1 min