CRES Radiology Equipment Prep

Get ready for the CRES exam, the Certified Radiology Equipment Specialist credential from the AAMI Credentials Institute (ACI), with a study guide built around the imaging equipment you service.

MODALITY BOARD
Your home screen is a board of eight modality cards: X-ray, Fluoro, CT, MRI, Ultrasound, Nuclear Medicine, Mammography and PACS. Each card shows your live accuracy and how many Artifact Lab cases you have solved. Tap a modality to launch practice, flashcards or cases filtered to it. A switcher row at the top focuses the whole app on one modality.

ARTIFACT LAB
Work real-world style service cases. Each one describes an image artifact, an error message or a service symptom: grid cutoff, ring artifacts, RF zipper lines, probe dropout, cold spots on a flood, C-ECHO failures and more. Name the most likely cause, then choose the corrective action, and read the explanation after each step. The free version includes one case for every modality.

PHYSICS BENCH (FREE)
Five calculators for the math the exam asks of you:
• Inverse square law and mAs-distance compensation
• 15% kVp rule
• Heat units for single-phase, three-phase and high-frequency generators
• CT number (Hounsfield units) from attenuation, and back
• Dose unit converter: Gy, rad, Sv, rem and R

EVERY STUDY MODE
• A scored 10-question practice set with a per-area breakdown
• 120+ multiple-choice questions written to the current ACI content outline
• 150+ flashcards and 90+ true/false drills
• Glossary with a term-matching game
• Formula reference for radiologic physics, CT dose, ultrasound and networking

BUILT ON THE CURRENT OUTLINE
Content follows the six content areas of the CRES outline in the ACI Certification Candidate Handbook 2026: Anatomy & Physiology, Public Safety, Electricity & Electronics, Healthcare Technology and Function, Problem Solving, and Healthcare Information Technology. Topics include x-ray tubes and generators, CR and DR detectors, fluoroscopy, CT, MRI safety zones, ultrasound transducers, gamma cameras, mammography quality standards, radiation protection, 21 CFR 1020 performance standards, PACS, DICOM and modality worklist.

DESIGNED FOR THE READING ROOM
A dark, low-glare interface with large cards, so it is comfortable to study on a break or at night.

FREE AND PREMIUM
The free version includes a full scored practice set, sample flashcards, true/false drills, glossary terms, one Artifact Lab case per modality, and the complete Physics Bench. Premium unlocks the full library through a subscription or a one-time lifetime unlock. Subscriptions renew automatically unless cancelled in your Google Play account settings.

OFFICIAL SOURCES
• ACI certification: https://www.aami.org/certification
• 21 CFR Part 1020 (eCFR): https://www.ecfr.gov/current/title-21/chapter-I/subchapter-J/part-1020
• FDA MQSA: https://www.fda.gov/radiation-emitting-products/mammography-quality-standards-act-and-program
• 10 CFR Part 20 (eCFR): https://www.ecfr.gov/current/title-10/chapter-I/part-20

This app is an independent study aid. It is not affiliated with, endorsed by, or sponsored by the AAMI Credentials Institute (ACI) or AAMI. It is not a government app and does not represent the FDA, the NRC or any state agency. Regulations are summarized for study; always confirm current requirements with the official sources. Study material only; it does not replace manufacturer service documentation or your facility's radiation safety program.

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