Lesson 1Doppler Basics: Colour Doppler, Power Doppler, Pulsed-Wave (PW) Doppler, Continuous-Wave (CW) OverviewThis part introduces colour, power, pulsed-wave, and continuous-wave Doppler techniques. Learners will review key blood flow principles, issues like aliasing, and when to use each Doppler type in everyday vascular and heart assessments.
Doppler effect and flow direction basicsColor Doppler principles and mapsPower Doppler sensitivity and usesPulsed-wave Doppler applicationsContinuous-wave Doppler indicationsLesson 2Harmonics, Compound Imaging, Speckle Reduction: When to Use and Expected EffectsThis section looks at tissue harmonic imaging, spatial compound imaging, and speckle reduction tools. Learners will learn when to turn on each feature, spot the changes in images, and avoid problems from too much processing.
Tissue harmonic imaging indicationsEffects of harmonics on resolution and noiseSpatial compound imaging benefitsSpeckle reduction filters and limitsBalancing detail with artifact controlLesson 3Machine Controls and Presets: Presets, Depth, Gain, Time-Gain Compensation (TGC), Dynamic Range, Focal ZonesThis part explains main machine controls like presets, depth, overall gain, TGC, dynamic range, and focal zones. Learners will practise using the controls step by step to get clear, balanced B-mode images in different situations.
Selecting and modifying exam presetsDepth and field of view adjustmentsOverall gain versus TGC shapingDynamic range and image contrastFocal zone number and placementSaving user presets and recallLesson 4Frequency Selection and Penetration: Choosing MHz for Abdominal, Pelvic, and Vascular ScansThis section teaches how to pick the right transmit frequency for various body areas. Learners will connect frequency choices to depth of penetration, image sharpness, and patient body type for abdominal, pelvic, and vascular ultrasound exams.
Frequency versus penetration principlesChoosing MHz for abdominal imagingFrequency choices for pelvic scanningFrequency ranges for vascular studiesAdjusting for body habitus and depthLesson 5Beamforming and Focus: Setting Focal Zones and Single vs Multiple Foci for Image ClarityThis part explains beamforming ideas and how focal zones affect side-to-side resolution. Learners will compare one focal zone against several, understand effects on image speed, and learn where to place focus for important organs.
Transmit and receive beamforming basicsFocal depth and lateral resolutionSingle versus multiple focal zonesFocus and frame rate trade-offsBest focus placement by anatomyLesson 6Fundamental Ultrasound Physics: Sound Propagation, Frequency, Wavelength, Attenuation, Resolution Trade-offsThis section goes over how sound waves move through body tissues, the link between frequency and wavelength, and how signal loss and sharpness choices impact image quality. Learners will tie physics ideas to daily scanning decisions.
Acoustic wave properties and terminologyFrequency, period, and wavelength relationsPropagation speed in soft tissuesAttenuation, absorption, and scatteringAxial and lateral resolution trade-offsLesson 7Artefacts and Their Management: Reverberation, Shadowing, Enhancement, Mirror Image, Anisotropy and How to Reduce or Use ThemThis part reviews common ultrasound artefacts like reverberation, shadowing, enhancement, mirror image, and anisotropy. Learners will learn to spot them, reduce them when needed, or use them on purpose to boost diagnostic certainty.
Reverberation and comet-tail artifactsAcoustic shadowing and its causesPosterior acoustic enhancement usesMirror image and refraction artifactsAnisotropy in tendons and nervesTechniques to reduce unwanted artifactsLesson 8Image Quality Check Procedures: Phantom/QA Basics and Quick Pre-Scan Checks on Live Patients (Preset Load, Probe Connection, Gel, Sweep)This section describes regular image quality checks with test phantoms and fast pre-scan steps on patients. It includes quality assurance basics, checking presets, probe links, gel application, and sweep tests before starting diagnostic imaging.
Phantom types and QA test basicsChecking depth, gain, and resolutionVerifying probe selection and cablesGel application and contact assessmentQuick sweep for global image reviewLesson 9Doppler Settings and Optimisation: PRF/Scale, Baseline, Wall Filter, Gain, Insonation Angle Effects, Sample Volume PlacementThis part focuses on fine-tuning Doppler settings like PRF or scale, baseline, wall filter, gain, angle, and sample volume. Learners will practise cutting down aliasing and noise while keeping true spectral data.
Setting PRF or scale to avoid aliasingBaseline shifts and display choicesWall filter to remove low-frequency noiseDoppler gain and noise managementInsonation angle and angle correctionSample volume size and placementLesson 10Transducer Types and Construction: Linear, Curved (Convex), Phased Array, Endocavitary; Footprint and Clinical UsesThis section shows how to choose and handle linear, curved, phased array, and endocavitary probes. It stresses probe size, frequency options, basic build, and matching each type to specific medical uses.
Piezoelectric elements and housingLinear array footprint and indicationsCurved array for abdominal and OB usePhased array for cardiac and intercostalEndocavitary probes and safetyProbe care, handling, and damage signs
