ACVR Veterinary Radiology study guide
ACVR Veterinary Radiology · Work through your exam, one topic at a time.
The American College of Veterinary Radiology (ACVR) is the American Veterinary Medical Association (AVMA) recognized veterinary specialty organization for certification of Radiology, Radiation Oncology and Equine Diagnostic Imaging. It is a member-driven, non-profit organization consisting of over 800 accredited veterinary radiologists and radiation oncologists, and its stated mission is to promote excellence in patient care by providing leadership, innovation, and education in veterinary diagnostic imaging and radiation oncology. Candidates for ACVR certification are veterinarians who have completed specialty training through an ACVR Radiology or Radiation Oncology residency program and are preparing for specialty board examination. Because the college certifies three distinct areas, examination content spans diagnostic imaging (including CT/MR, ultrasound, nuclear medicine, and large animal imaging interests reflected in its societies), radiation oncology principles and treatment planning, and equine diagnostic imaging. Topics on this exam: Radiology, Radiation Oncology, and Equine Diagnostic Imaging. The ACVR Veterinary Radiology study guide has 3 sections and about 832 words.
01Radiology: Interpretation Fundamentals and Common Traps
Diagnostic radiology questions reward systematic film reading and physics literacy. Understand the five radiographic opacities (gas, fat, soft tissue/fluid, mineral/bone, metal) and how contrast media create a sixth category. Know the silhouette sign (loss of border between two structures of similar opacity implies they contact), the summation sign (superimposed structures creating false opacity), and Roentgen signs (size, shape, number, location, margination, opacity). Candidates must grasp mAs controls quantity (density/darkness) and kVp controls quality (penetration/contrast), plus the inverse square law and ALARA.
308 words, about 2 min02Radiation Oncology: Principles, Fractionation, and Safety
Radiation oncology questions test radiobiology, treatment planning, and toxicity recognition . Know the 4 R's of radiobiology : repair, redistribution, repopulation, and reoxygenation. Understand the linear-quadratic model conceptually-the α/β ratio separates early-responding tissues (high α/β, ~10 Gy) from late-responding tissues (low α/β, ~2–3 Gy)-and why fractionation spares late effects while still controlling tumor. Distinguish definitive vs palliative vs adjuvant intent.
261 words, about 1 min03Equine Diagnostic Imaging: Anatomy, Modalities, and Lameness
Equine imaging emphasizes anatomy-driven interpretation and modality selection. Know the radiographic anatomy of the distal limb (P1, P2, P3, navicular bone, distal sesamoidean ligaments) and standard views: lateral, dorsopalmar/dorsoplantar, and oblique projections. Understand the navicular bone skyline and flexor surface evaluation for navicular syndrome. Radiography : first line for distal limb and joint disease; know osteophyte, enthesophyte, subchondral bone changes.
263 words, about 1 min