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Latest Videos from Radiography101
The list updates from the channel feed and keeps a local fallback if the feed is unavailable.
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 · LINACIn-depth guides on positioning techniques, exam prep, career advice, and modality comparisons — written for radiologic technology students.
Complete humerus X-ray positioning guide for rad techs — AP, lateral, and transthoracic (Lawrence method) views with centering points, SID, IR sizing, evaluation criteria, and ARRT exam tips.
July 22, 2026 🦴 PositioningComplete TMJ X-ray positioning guide — axiolateral (Schüller method), PA transoral, and AP axial views with Clark's centering, open vs closed mouth comparison, and ARRT exam tips.
July 22, 2026 🦴 PositioningComplete scoliosis series positioning guide for rad techs — PA, lateral, and bending views with Cobb angle measurement, Clark's references, and ARRT exam tips.
July 20, 2026 🦴 PositioningComplete mandible X-ray positioning guide for rad techs — axiolateral oblique with rotation guide, PA axial, and AP axial Towne method with Clark's centering points and ARRT exam tips.
July 17, 2026 🦴 PositioningMaster clavicle X-ray positioning for rad techs — AP and AP axial (cephalic) views with Clark's centering points, technique charts, trauma considerations, companion shadow identification, and ARRT exam tips.
July 15, 2026 🦴 PositioningMaster shoulder X-ray positioning for rad techs — AP internal/external rotation, Grashey (true AP), scapular Y-view, axillary lateral, and trauma shoulder series. Centering points, evaluation criteria, and ARRT exam prep questions.
July 15, 2026 🦴 PositioningComplete thoracic and lumbar spine X-ray positioning guide — AP, lateral, spot lateral, oblique, and scoliosis series with centering points, breathing techniques, and ARRT exam prep questions.
July 14, 2026 🦴 PositioningComplete elbow X-ray positioning guide for rad techs — AP, lateral, oblique, and radial head views with Clark's centering points, technique charts, fat pad sign interpretation, Coyle method, and ARRT exam tips.
July 13, 2026 🦴 PositioningAdvanced cervical spine X-ray positioning guide — trauma clearance protocols, ABCS evaluation method, normal variants vs fractures, CT junction imaging, and ARRT-level practice questions for rad techs.
July 13, 2026 🦴 PositioningComplete pelvis X-ray positioning guide for rad techs — AP pelvis, Judet views, inlet and outlet projections, trauma considerations, centering, IR sizes, and ARRT exam tips for each projection.
July 12, 2026 🦴 PositioningAdvanced rib X-ray positioning — clinical decision-making for PA vs AP vs oblique, specialized lordotic projections, CT imaging algorithms, normal variants that simulate fractures, and pathology recognition.
July 11, 2026 🦴 PositioningMaster femur X-ray positioning — AP full-length, lateral recumbent, and horizontal beam lateral (trauma) views with Clark's centering points, technique charts, evaluation criteria, and ARRT exam tips for rad techs.
July 10, 2026 💉 Patient CareHIPAA compliance for radiologic technologists — protected health information (PHI), minimum necessary rule, patient privacy in imaging areas, voice and data security, breach reporting, and real-world case scenarios for rad techs.
July 10, 2026 💡 EducationSystematic approach to radiographic image critique — evaluating positioning, collimation, exposure factors, anatomical coverage, and image quality. Templates for clinical image evaluation and ARRT exam preparation.
July 09, 2026 📝 Practice Test300+ practice questions covering ARRT & PART/RTLE licensing exams. Filter by topic, modality, and exam type. Random 100-question exams with instant feedback and score tracking.
🦴 PositioningComplete sacrum and coccyx X-ray positioning guide — AP sacrum (15° cephalad), AP coccyx (10° caudad), and lateral views with Clark's centering points, technique charts, evaluation criteria, and ARRT exam tips.
July 08, 2026 💉 Patient CareInfection prevention for rad techs — hand hygiene, standard precautions, transmission-based precautions, equipment disinfection protocols, isolation patient imaging workflow, and COVID-19 and emerging pathogen considerations.
July 08, 2026 💉 Patient CareEffective patient communication techniques for rad techs — explaining procedures, managing anxious patients, pediatric and geriatric communication, cultural sensitivity, and plain language strategies for informed consent.
July 07, 2026 🦴 PositioningComplete facial bones X-ray positioning guide for rad techs — Waters, modified Waters, Caldwell, lateral, SMV, and nasal bone views with Clark's centering points, evaluation criteria, and ARRT exam tips.
July 06, 2026 🛡️ SafetyEvidence-based pediatric dose reduction for rad techs — Image Gently campaign principles, size-based technique adjustments, shielding protocols, immobilization to avoid repeats, and dose monitoring for CT and X-ray.
July 06, 2026 🔬 ProceduresComplete HSG procedure guide — patient preparation, contrast instillation, fluoroscopic imaging sequence, tubal patency assessment, normal vs pathologic findings, and post-procedure care for rad techs.
July 5, 2026 🔬 ProceduresExcretory urography (IVU/IVP) guide — patient preparation, contrast injection timing, sequence of radiographs (scout, nephrogram, pyelogram, post-void), compression techniques, and alternative imaging for renal stones.
July 4, 2026 🔬 ProceduresComplete guide to barium contrast studies for rad techs — upper GI series, small bowel follow-through, barium enema preparation, double-contrast technique, fluoroscopic positioning, and contraindications.
July 03, 2026 🦴 PositioningComplete skull X-ray positioning guide for rad techs — lateral, PA, Caldwell, Towne, and AP projections with Clark's centering points, evaluation criteria, and ARRT exam tips.
July 3, 2026 💉 Patient CareEssential guide to contrast extravasation for rad techs — risk factors, signs and symptoms, severity classification, immediate management steps, documentation requirements, and patient follow-up protocols.
July 02, 2026 🦴 PositioningComplete hip X-ray positioning guide for rad techs — AP hip, frog-leg lateral, cross-table lateral, and Dunn method projections. Centering points, IR sizes, trauma considerations, and ARRT exam tips included.
July 01, 2026 🔧 TechnologyComplete guide to digital X-ray artifacts — CR plate artifacts (scratches, static, erasure), DR detector artifacts (dead pixels, calibration errors), grid artifacts, motion artifacts, and software processing artifacts with troubleshooting tips.
July 01, 2026 ⚡ PhysicsAEC for radiography techs — phototimers vs ionization chambers, chamber selection, backup timer safety, density controls, and exam prep fundamentals.
June 30, 2026 📖 EducationLearn how to choose the right radiologic technology program — compare JRCERT accreditation, clinical rotation quality, program costs, and ARRT pass rates to find the best career fit.
June 29, 2026 ⚡ PhysicsGuide to exposure technique charts for rad techs — fixed kVp vs variable kVp charts, AEC technique charts, body habitus adjustments, pediatric technique modifications, and digital radiography exposure management.
June 28, 2026 💡 TechnologyComprehensive quality control program for radiography — daily QC checks for DR and CR systems, phantom testing, spatial resolution and contrast tests, AEC calibration, collimation accuracy, and regulatory compliance.
June 27, 2026 ⚡ PhysicsMaster radiographic grids for the ARRT exam — grid ratios, Bucky factor, focused vs parallel grids, air gap technique, and how anti-scatter grids improve X-ray image quality.
June 26, 2026 💡 TechnologyPACS and DICOM fundamentals every rad tech should know — image acquisition, storage, and retrieval, DICOM modalities and tags, HL7 interfaces, RIS-PACS integration, image compression, and troubleshooting connectivity issues.
June 26, 2026 📖 EducationMaster your clinical rotations with this complete guide — ARRT competency requirements, professional conduct tips, clinical success strategies, and how to pass every check-off in your radiography program.
June 24, 2026 💡 PhysicsUnderstanding digital radiography image processing — histogram analysis, look-up tables (LUTs), edge enhancement, spatial frequency processing, multi-frequency processing, and digital post-processing techniques for diagnostic optimization.
June 24, 2026 🔬 TechniquesO.R. radiography and C-arm operation guide — sterile field protocol, C-arm positioning for orthopedic surgery, intraoperative imaging, radiation safety in the OR, and common surgical procedures requiring fluoroscopy.
June 23, 2026 📍 PositioningStep-by-step forearm X-ray positioning guide — AP and lateral forearm projections, radius and ulna technique, centering points, common errors, evaluation criteria, and ARRT exam tips for rad techs.
June 22, 2026 💡 TraumaComplete guide to trauma radiography — ATLS imaging protocols, cross-table lateral views, horizontal beam techniques, trauma series (cervical, chest, pelvis), and communication in the trauma bay.
June 21, 2026 🔬 TechniquesMaster portable X-ray technique — positioning patients in bed, trauma cart radiography, ICU chest X-rays, mobile C-arm guidance, radiation safety for portable exams, and image quality considerations.
June 20, 2026 🩻 Chest X-RayMaster portable chest X-ray technique for rad techs — AP positioning methods, SID guidelines, grid decisions, common errors, evaluation criteria, and ARRT exam tips for mobile radiography.
June 19, 2026 🔊 UltrasoundTwo breakthroughs in water-immersion whole-body ultrasound in one article: Caltech's research-grade system and Midjourney Medical's Ultrasonic CT with Butterfly Network chips.
June 19, 2026 💡 PediatricsComplete guide to pediatric radiography for rad techs — immobilization techniques, modified positioning for children, dose reduction strategies, gonadal shielding, and age-appropriate communication.
June 19, 2026 📍 PositioningStep-by-step foot and ankle X-ray positioning — AP, oblique, lateral foot views; AP, mortise, lateral ankle views; axial calcaneus projection. Weight-bearing vs non-weight-bearing considerations.
June 18, 2026 📖 EducationComplete guide to radiography program accreditation — what JRCERT accreditation means, how to find accredited programs, and why accreditation matters for ARRT exam eligibility and your rad tech career.
June 17, 2026 📍 PositioningComplete positioning guide for hand, wrist, and finger X-rays — PA, oblique, lateral, scaphoid views, and special projections for the thumb and digits. Common errors and evaluation criteria.
June 17, 2026 📍 PositioningMaster shoulder X-ray positioning for rad techs — AP internal/external rotation, Grashey (true AP), scapular Y-view, axillary lateral, and trauma shoulder series. Centering points and evaluation criteria.
June 16, 2026 📍 PositioningPositioning guide for thoracic and lumbar spine radiography — AP, lateral, spot lateral, and oblique projections. Centering points, breathing instructions, and evaluation of scoliosis series.
June 15, 2026 📍 PositioningUpper extremity X-ray positioning guide — hand, wrist, and elbow projections with Clark's centering points, technique charts, and ARRT exam tips for rad techs.
June 15, 2026 PositioningStep-by-step cervical spine X-ray positioning — AP open mouth, lateral, swimmer's, oblique, and flexion-extension views. Trauma precautions, centering, and evaluation criteria for each projection.
June 13, 2026 PositioningComplete pelvis X-ray positioning guide for rad techs — AP pelvis, Judet views, inlet and outlet projections. Centering, IR size, trauma considerations, and ARRT exam tips.
June 12, 2026 PhysicsMaster kVp and mAs — how kilovoltage and milliamperage affect X-ray beam quality, density, contrast, patient dose, and technique chart development for rad techs.
June 12, 2026 PositioningMaster rib X-ray positioning — PA, AP, oblique, and anterior rib projections. Learn centering points, breathing techniques, and evaluation criteria for diagnosing rib fractures.
June 11, 2026 SafetyPatient shielding in radiography — why lead aprons and gonadal shielding are no longer recommended, the science behind the change, and what evidence-based practice looks like today.
June 14, 2026The list updates from the channel feed and keeps a local fallback if the feed is unavailable.
Designed 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 | — |
