Aug 14, 2022
DMS 115 - Ultrasound Physics and Instrumentation IICredits: 2
Presents the fundamentals of Doppler ultrasound, scanning artifacts, quality assurance, and biologic effects, and safety. Includes an overview of the components of an ultrasound system.
Prerequisite(s): DMS 101W , DMS 103 , DMS 104 , and DMS 106W each with a minimum grade of “B” (3.0) and LW 206A with a minimum grade of “C” (2.0)
Corequisite(s): DMS 112 , DMS 113 , DMS 114 , DMS 116W , and DMS 117W
Lecture Hours: 30 Lab Hours: 0
Meets MTA Requirement: None
Outcomes and Objectives
- Demonstrate the basics of ultrasound physics.
- Define basic ultrasound physics formulas.
- Describe the parameteres of a sound wave.
- Explain the differences with pulsed ultrasound.
- Describe attenuation.
- Define and explain axial and lateral resolution.
- Explain the effects of focusing.
- Distinguish between refraction and reflection.
- Describe ultrasound imaging modes.
- Demonstrate understanding of the fundamental principles of Doppler ultrasound for use in the clinical setting.
- Define “Doppler Shift”.
- Differentiate between speed and velocity.
- Explain the relationship between frequency and blood flow.
- Explain the relationship between frequency and angle.
- Describe the Doppler equation.
- Identify the known elements of the Doppler equation.
- Describe the difference between continuous wave and pulsed wave doppler.
- Understand doppler signal processing.
- Define spectral analysis.
- Describe the three methods of Doppler signal processing.
- Demonstrate understanding of the fundamental principles of color Doppler ultrasound for use in the clinical setting.
- Define color flow Doppler.
- Explain the steps in creating a color flow image.
- Interpret color maps.
- Describe the difference between velocity mode and variance mode.
- Identify the technique of choice for spectral analysis of color flow Doppler.
- Demonstrate understanding of the components of an ultrasound system.
- List the six electrical components of an ultrasound system.
- Describe the function of a pulser.
- List the three pulser modes.
- Describe the function of the receiver.
- Define the term “compensation”.
- Diagram a TGC curve.
- Explain compression and demodulation.
- Identify a cathode ray tube and describe its basic function.
- Describe the function of a scan converter.
- Differentiate between pre and post processing.
- Differentiate between analog and digital scan converters.
- Define and identify artifacts in clinical scanning.
- Differentiate between axial and lateral resolution.
- Describe enhancement.
- Explain propagation speed error.
- Describe and adequately perform ultrasound quality assurance.
- Define quality assurance.
- List the four requirements for a quality assurance program.
- Identify the various types of test objects used in quality assurance.
- Describe and perform performance measurements.
- Explain what a hydrophone is used for.
- Explain the difference between a calorimeter and a thermocouple.
- Demonstrate understanding of the biological effects and safety of ultrasound.
- Define dosimetry.
- Differentiate between mechanistic and empirical approaches to study bioeffects.
- Explain the proposal of thermal mechanism.
- Describe cavitation.
- Differentiate between stable and transient cavitation.
- Define epidemiology.
- Be familiar with the AIUM statements on the following:
- Thermal Bioeffects
- In Vitro Biological Effects
- In Vivo Biological Effects
- Clinical Safety
- Safety in Training and Research
- Demonstrate an understanding of the various methods of ultrasound imaging and display.
- Describe A-mode, M-mode, and B-mode imaging.
- Define real-time imaging.
- Explain the difference between mechanical and array transducers.
- Differentiate between switched array and phased array focusing.
- Define a vector array transducer.
- Identify image shape in relation to transducer type.
- Demonstrate an understanding of ultrasound harmonic imaging.
- Define harmonic imaging.
- Define the fundamental frequency.
- Distinguish between tissue and contrast harmonics.
- Explain the mechanical index.
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