Practice Test Geeks(CET) Certified Echocardiography Technician Practice Test
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Technology & Digital Tools Flashcards

7 cards from real CET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the primary function of the 'reject' control on an echocardiography machine?

    Answer: Eliminates low-amplitude signals below a set threshold

    The reject control suppresses low-level noise and clutter signals beneath a user-defined amplitude threshold, cleaning the image background.

  2. In 3D echocardiography, which acquisition mode captures a full-volume dataset triggered over multiple cardiac cycles?

    Answer: Multi-beat full-volume

    Multi-beat full-volume acquisition stitches together sub-volumes from 4–7 gated heartbeats to achieve high volume rate and spatial resolution.

  3. Which measurement tool in echo analysis software uses the proximal isovelocity surface area (PISA) method?

    Answer: Regurgitant orifice area calculation

    PISA calculates the effective regurgitant orifice area (EROA) by measuring the radius of the convergence hemisphere on color Doppler.

  4. When using tissue Doppler imaging (TDI) to measure myocardial velocities, what signal processing change distinguishes TDI from standard color Doppler?

    Answer: High-pass filters removed; low-pass filters applied to retain low-velocity, high-amplitude myocardial signals

    TDI reverses conventional Doppler filtering by removing high-pass wall filters to capture slow, high-amplitude myocardial motion while rejecting fast blood-flow signals.

  5. A technician needs to send echo reports to a cardiologist's electronic health record system. Which messaging standard is typically used for structured report data (not image transfer)?

    Answer: HL7 v2.x or FHIR

    HL7 v2.x messages (such as ORU^R01) or FHIR resources are the standards for transmitting structured clinical reports and results between healthcare IT systems.

  6. In contrast echocardiography, which technology in the imaging system must be activated to optimally visualize ultrasound contrast agents?

    Answer: Harmonic imaging with low mechanical index

    Low mechanical index harmonic imaging detects the non-linear oscillation of contrast microbubbles while minimizing bubble destruction.

  7. Which network standard defines the maximum data payload size per Ethernet frame and is relevant when large DICOM echo files are transmitted over hospital networks?

    Answer: MTU (Maximum Transmission Unit)

    MTU defines the largest data frame (typically 1500 bytes for standard Ethernet) that can be sent without fragmentation, affecting DICOM transfer efficiency.