DDU(Vascular) - Australasian Society for Ultrasound in Medicine

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DDU(Vascular) SyllabusLEARNING OBJECTIVESPhysical principles of ultrasoundCandidates will be able to describe:• the wave nature of ultrasound and its propagation through tissue.• the reflection and scattering of ultrasound and relate these to acoustic impedance.• the concept of attenuation, its mechanisms and factors affecting it.• refraction of ultrasound and critical angle of incidence.• the concept of pulsed ultrasound.• the concept of the bandwidth of an ultrasound pulse.Transducer and beamforming conceptsCandidates will be able to describe the:• purpose and function of a transducer and the construction of a typical transducer.• concept of an ultrasound beam and the importance of controlling beam width.• beam shape for a simple unfocused transducer.• various methods used to focus the beam, including electronic focussing for arraytransducers.• major types of transducer and the mechanisms used with each to scan the beamwhen imaging.• concept of slice thickness.Candidates will be able to:• define beam sidelobes.• explain the factors affecting the choice of transducer for a specific application.Imaging principles and technologyCandidates will be able to describe the:• pulse-echo principle and how it is used in B-mode and M-mode ultrasound imaging.• basic components of an ultrasound imaging machine and their purpose.• controls associated with each component and their effect on the image.• methods used to make measurements from images.• various methods available to record imagesCandidates will be able to:• define the major aspects of image quality.• recognise the principal image artifacts and describe how they are produced andhow they can be identified and/or eliminated.4
DDU(Vascular) SyllabusDoppler principles and instrumentationCandidates will be a able to describe the:• principle of operation and components of continuous wave and pulsed Dopplerinstrumentation.• elements of the Doppler spectral display and how it is used to make measurements.• principle of operation and components of colour Doppler.• instrumentation, including power (amplitude) mode.Candidates will be able to:• explain the Doppler effect and describe how it is used in ultrasound diagnosis.• recognise the principal Doppler artifacts and describe how they are produced andhow they can be identified and/or eliminated.Bioeffects and safetyCandidates will be able to:• demonstrate an understanding of the potential for bioeffects and biohazards.• define the parameters used to characterise patient exposure.Candidates will be able to explain:• the known thermal and mechanical bioeffects and the relative likelihood of theseoccurring with different modes of examination.• practical approaches to reducing risk and relevant ASUM policies.New and evolving techniques• Candidates will be able to discuss briefly the basic principles involved in a range ofnew technologies including:- multiple beamforming- extended field of view- contrast agents- tissue and contrast harmonic imaging- spatial compound scanning- three dimensional (and 4D) scanning- coded signals- Doppler tissue imaging- elastography.5
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DDU(Vascular) - Australasian Society for Ultrasound in Medicine

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