Getting Through the ARRT with Meaghan Piretti's Materials
I spent three weeks trying to make sense of radiography positioning before I found Meaghan Piretti's study guide. The standard textbooks are fine for theory but they don't translate well when you're staring at a practice exam and realizing you don't actually know how to position a scaphoid wrist. The Meaghan Piretti X Ray Study Guide filled that gap because it's written by someone who actually teaches rad tech students, not someone who just pulled radiography off a shelf. The guide breaks down positioning, radiation biology, and equipment into things that are actually memorable. Most study materials assume you already know the basics. This one doesn't. It starts with the fundamentals of x-ray production and builds from there, which matters if your physics background is rusty. I went into my prep knowing about half of radiation protection and leaving with everything I needed on that front.
Where to Find the Meaghan Piretti X Ray Study Guide
You can download it directly from her website, pirettiradtech.com. She also lists it on Amazon for the printed version if you prefer paper. The PDF downloads quickly and runs about 80 to 100 pages depending on the edition. I'd recommend getting the latest version since the ARRT updates their exam content outline every couple years and the older ones skip newer protocol questions. The study guide is organized by body system. Each section gives you the relevant positioning, central ray angles, collimation, and exposure factors you need to know. What's useful is that she includes the common pathology questions alongside the positioning, which is how the actual ARRT exam blends things together. A lot of free resources online treat positioning and pathology as separate subjects, so when you hit the real test you're not used to the format. I ran into a problem with the musculoskeletal section on my first pass. The guide lists standard projections but doesn't spell out every modification for trauma patients in full detail. I was stuck trying to figure out how to adjust a lateral knee position when the patient couldn't fully extend the leg. The workaround I found was pairing the guide with the radiopaedia.org site, where I could look up specific trauma variations. The guide gives you the foundation and the baseline protocols. You supplement with clinical resources for edge cases. That combination got me through without burning hours cross-referencing three different textbooks.
What Makes It Different From Other Resources
Most study guides try to be comprehensive and end up being everything at once. This one stays focused on what actually shows up on the exam. That means you spend less time on obscure positions and more time on the high-yield content. The quiz questions at the end of each section are realistic too. They're not the kind of trick questions that test whether you memorized a weird detail from page 347. They test whether you can apply positioning knowledge under pressure, which is exactly what the ARRT does. One thing people miss is how much the radiation safety and patient care sections matter. You can score decent on positioning and still fail the exam because you blow the safety questions. The guide gives those topics real weight instead of burying them in a chapter near the end. I spent two full study sessions on just the radiation biology portion and it paid off. The ARRT loves to pull questions about patient dose, shielding, and ALARA principles, and the guide covers them head on.
Get the Full Details

Limitations You Should Know About
It's not a complete replacement for a full review course. If you're starting from zero with no classroom exposure, you'll still need video content or a lab component to understand things like tube angles and cassette placement. The guide is excellent as a review tool or a second pass after you've taken a rad tech program. It's less useful if you've never held a bucky or set up a patient before. The PDF format also means you can't write notes in it the same way you can with a physical book. I ended up printing the positioning tables and sticking them on my wall. That's a bit old school but it worked better than trying to highlight on a screen while watching YouTube videos at the same time.
How I Used It Before the Exam
I went through the guide twice. The first pass was fast, maybe two days, just to get the structure in my head. The second pass was slower, about five days, working through every quiz question and making sure I understood why each answer was right or wrong. I flagged the questions I missed and came back to them the last week before the test. That's where the real retention happened. The guide didn't teach me everything on the first read, but it gave me a map of what I needed to study and where the gaps were. If you're preparing for the ARRT radiography exam and want something straightforward without the fluff, this guide is worth your time. It's not flashy. It doesn't promise you'll pass in a week. But it's accurate, well organized, and written by someone who knows what the exam actually tests.