Lesson 1Doppler Basics: Colour Doppler, Power Doppler, Pulsed-Wave Doppler, Continuous-Wave OverviewThis part shows colour, power, pulsed-wave, and continuous-wave Doppler. You will look at blood flow rules, mixing signals, and when to use each Doppler type in usual blood vessel and heart checks.
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 Turn On and What Changes to ExpectThis part looks at tissue harmonic imaging, spatial compound imaging, and speckle filters. You will know when to turn each on, see picture changes, and avoid too much processing that makes false marks.
Tissue harmonic imaging indicationsEffects of harmonics on resolution and noiseSpatial compound imaging benefitsSpeckle reduction filters and limitsBalancing detail with artifact controlLesson 3Machine Buttons and Settings: Presets, Depth, Gain, Time-Gain Compensation, Dynamic Range, Focal ZonesThis part explains main machine buttons like presets, depth, gain, TGC, dynamic range, and focal zones. You will practice button use to quickly get good B-mode pictures in different cases.
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 4Choosing Frequency and Depth: Picking MHz for Belly, Pelvic, and Blood Vessel ScansThis part covers picking right send frequency for body parts. You will connect MHz choice to depth reach, clearness, and patient size for belly, pelvic, and blood vessel ultrasound checks.
Frequency versus penetration principlesChoosing MHz for abdominal imagingFrequency choices for pelvic scanningFrequency ranges for vascular studiesAdjusting for body habitus and depthLesson 5Beam Shaping and Focus: Setting Focal Zones and Single vs Multiple for Clear PicturesThis part explains beam shaping ideas and how focal zones affect side clearness. You will compare one vs many focal zones, know picture speed effect, and learn focus place for main body parts.
Transmit and receive beamforming basicsFocal depth and lateral resolutionSingle versus multiple focal zonesFocus and frame rate trade-offsBest focus placement by anatomyLesson 6Basic Ultrasound Wave Ideas: Sound Travel, Frequency, Wavelength, Weakening, Clearness ChoicesThis part reviews how sound waves move in body, how frequency and wavelength link, and how weakening and clearness choices change picture good. You will tie wave ideas to daily scan picks.
Acoustic wave properties and terminologyFrequency, period, and wavelength relationsPropagation speed in soft tissuesAttenuation, absorption, and scatteringAxial and lateral resolution trade-offsLesson 7False Marks and Handling Them: Echo Back, Shadow, Bright Spot, Mirror Picture, Uneven and How to Lessen or UseThis part reviews common ultrasound false marks like echo back, shadow, bright spot, mirror picture, and uneven. You will learn to spot, reduce, or use marks on purpose to better trust checks.
Reverberation and comet-tail artifactsAcoustic shadowing and its causesPosterior acoustic enhancement usesMirror image and refraction artifactsAnisotropy in tendons and nervesTechniques to reduce unwanted artifactsLesson 8Picture Quality Check Steps: Test Block Basics and Quick Before-Scan Checks on Patients (Load Setting, Probe Link, Gel, Sweep)This part shows usual picture quality checks with test blocks and quick steps before scan on patients. It covers basics of checks, right settings, probe link, gel use, and sweep before main 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 Improving: PRF Scale, Baseline, Wall Filter, Gain, Angle Effect, Sample PlaceThis part looks at improving Doppler settings like PRF scale, baseline, wall filter, gain, angle, and sample place. You will practice less mixing and noise while keeping true wave info.
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 10Probe Types and Build: Linear, Curved, Phased Array, Inside Body; Size and Use in ClinicThis part explains picking and using linear, curved, phased array, and inside body probes. Focus on size, frequency range, build basics, and matching probe type to clinic needs.
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
