An interactive learning hub for radiologic technology students. Explore the physics, equipment, and clinical applications behind every major imaging modality — from X-rays to MRI.
Each modality page covers the underlying physics, how the equipment works, interactive diagrams, clinical applications, and key concepts for your exams.
From Röntgen's accidental discovery in 1895 to modern digital imaging. An interactive timeline of the milestones that shaped medical imaging.
Timeline · PioneersThe foundation of all medical imaging. Understand X-ray tube physics, image formation, exposure factors, and diagnostic applications.
Ionizing · DiagnosticHarnessing high-frequency sound waves for real-time imaging. Explore the piezoelectric effect, transducer types, and Doppler techniques.
Non-Ionizing · Real-TimePowerful soft-tissue contrast using magnetic fields and radio waves. Learn proton physics, pulse sequences, and scanner safety protocols.
Non-Ionizing · Soft TissueCross-sectional anatomy from a rotating X-ray beam. Understand Hounsfield units, multi-detector arrays, and helical scanning.
Ionizing · Cross-SectionFunctional imaging with radiopharmaceuticals. Explore SPECT, PET, gamma camera principles, and radionuclide therapy applications.
Ionizing · FunctionalUsing ionizing radiation to treat cancer. Understand LINAC machines, treatment planning, fractionation, and the role of the radiation therapist.
Therapeutic · LINACDesigned to work alongside your radiography program curriculum.
Get context on how medical imaging evolved. Understanding the "why" makes the physics easier to remember.
Each page covers physics principles, equipment diagrams, clinical uses, and key terminology.
Hover or tap on interactive diagrams to reveal labels, explanations, and component descriptions.
Visual explainers show you exactly how each technology works — from X-ray production to MRI proton alignment.
Key differences at a glance.
| Modality | Energy Source | Ionizing? | Primary Use | Soft Tissue? |
|---|---|---|---|---|
| X-Ray | X-ray photons | Yes | Bone, chest, dense structures | Limited |
| Ultrasound | Sound waves (MHz) | No | Soft tissue, vascular, OB | ✓ Excellent |
| MRI | Magnetic field + RF | No | Brain, spine, joints, soft tissue | ✓ Superior |
| CT Scan | X-ray photons | Yes | Trauma, chest, abdomen, vascular | Moderate |
| Nuclear Medicine | Gamma rays | Yes | Functional imaging, metabolism | Moderate |
| Radiotherapy | High-energy photons/particles | Yes | Cancer treatment | — |