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Classroom example EFW Radiology

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The question

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How it works

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Who does this work

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Ways in

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For you

About EFW Radiology

For you

Sources

How can an echo help make a picture of something inside the body?

EFW Radiology · Uxborough clinic in Calgary explicitly lists general ultrasound; employer explains the technique.

Graphic-novel illustration. Sonographer practising ultrasound acquisition using a training phantom.

Where it fits

Pick your class
  • Physics 20 · D2 — mechanical waves and reflection

How it works

Schematic · not to scale

Send a sound pulse. Listen for its echo.

An orange arrow shows a sound pulse travelling down from an ultrasound probe to a tissue boundary. A blue arrow shows the echo returning up to the probe. A connected screen shows one received echo peak.

  1. Send: the probe sends a pulse of high-frequency sound into the tissue. Follow the orange arrow down.

  2. Echo: some sound reflects at the tissue boundary and returns to the probe. Follow the blue arrow up.

  3. Record: the screen shows a received echo. Its return time helps estimate depth; many measurements are used to build an ultrasound image.

One boundary and one echo are shown to simplify the idea. The arrows show travel at different times, not separate physical channels. Only part of the sound reflects; some continues deeper. The screen is a signal sketch, not a diagnostic image.

The lesson, in the real world

An echo can carry information about something we cannot see directly.

  1. 1

    A transducer sends a pulse of high-frequency sound into the body.

    Our explanation
  2. 2

    Some sound is reflected at boundaries where acoustic properties change and returns toward the transducer.

    Our explanation
  3. 3

    The machine uses returned signals to help construct an image. Travel time can contribute to depth estimation; a simple model assumes a sound speed.

    Our explanation
  4. 4

    A sonographer acquires useful views while caring for the patient. A clinician interprets imaging evidence with the clinical question; an image alone is not the whole decision.

    Our explanation
Source: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab); alberta.ca — edc physics20 30 performance standards.pdf(opens in a new tab)

Who does this work

All roles in this example

Role

Diagnostic medical sonographer

Acquire ultrasound images while supporting the person being examined.

EFW explicitly names ultrasound technologists and booking/reception roles. Listed sonography qualification requirements are employer-stated; detailed teaching explanations are editorial.General explanation, written by usSource: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab)

What might you actually do?

  • Prepare

    Prepare for the requested examination and communicate with the patient.

  • Position

    Position the transducer and adjust acquisition settings to obtain useful views.

  • Document

    Document the images for interpretation within the clinical team's workflow.

Typical of this kind of work in general. Not a description of any one person’s job at EFW Radiology.

Often works with
PatientsRadiologistsClinic staff
Classroom connection
Producing a clear measurement and interpreting its meaning are connected but different tasks.

Related job postings

Similar work at other employers in Calgary, AB, not openings at EFW Radiology. These are live searches: results change daily and we have not checked them.

How to prepare

  • Diagnostic Medical Sonography

    SAIT

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Ways in

For your students

Ways to prepare for this work

Programs that teach skills this work uses. Each is one route in, not a requirement, and no program has endorsed this page.

Showing routes for diagnostic medical sonographer. Show all

  • SAITDiplomaCalgary

    Diagnostic Medical Sonography

    Ultrasound acquisition, instrumentation and patient care.

    About this route

    EFW separately states recognised training, Sonography Canada credentials and liability insurance; its evergreen overview is not an offer of work. Check current admissions and intake before applying; this draft does not promise entry or employment.

    Official program page(opens in a new tab)

    Why it connects to the work · our interpretation

    Diagnostic medical sonographer

    Ultrasound acquisition, instrumentation and patient care. Producing a clear measurement and interpreting its meaning are connected but different tasks.

Ask the class

Use it in class

Ask the class

Why is finding an echo different from knowing what it means?

Use a fictional uniform-medium model with speed 1,500 m/s and an echo returning after 80 microseconds. Calculate the total sound path (0.12 m) and boundary depth (0.06 m). Explain the division by two and one reason a real examination is more complicated.

Mindset it shows

The assumed speed and timing are teaching values, not a patient result. Ultrasound is a mechanical sound wave, not X-rays. Do not diagnose from images or imply that sound travels at one exact speed through every tissue.

About EFW Radiology

An echo can carry information about something we cannot see directly.

Headquarters
Headquarters not separately verified for this example.
Local connection
Uxborough clinic in Calgary explicitly lists general ultrasound; employer explains the technique.
Source: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab)
Team size
Not verified. We have not found a dated, sourced figure.
The problem
How can an echo help make a picture of something inside the body?
Source: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab)
What they do
Use reflected sound waves to create diagnostic images.
Source: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab)
Who uses it
Patients and clinicians seeking information from medical imaging.
Source: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab)

EFW Radiology provides ultrasound at Calgary clinics including Uxborough. Its service information explains that reflected sound waves are used to form images. An employer role overview separately describes sonographers' examinations and patient-care responsibilities, and booking staff's coordination work. The story joins the physics of measurement with the people who make clinical imaging possible.

Source: efw.ca — general ultrasound(opens in a new tab); efw.ca — uxborough 17(opens in a new tab); efw.ca — commonly recruited positions(opens in a new tab); efw.ca — careers(opens in a new tab)
Company website(opens in a new tab)Careers page(opens in a new tab)
Who does this work

Read each source’s date and scope: a documented role is not proof of a current vacancy or of where every position is based.

Reported as EFW Radiology states it. EFW Radiology has not reviewed or endorsed this page.

Sources and course fit

Sources checked 18 Oct 2026

Where it fits

  • Physics 20 · D2 — mechanical waves and reflection

Editorial mapping to published CBE course topics. Pending educator review. No outcome-code alignment is claimed.

Organization claims are reported as the organization states them. EFW Radiology has not reviewed or endorsed this page.

What we know, and how
TypeClaimHow we know
workEFW Radiology provides ultrasound at Calgary clinics including Uxborough. Its service information explains that reflected sound waves are used to form images. An employer role overview separately describes sonographers' examinations and patient-care responsibilities, and booking staff's coordination work. The story joins the physics of measurement with the people who make clinical imaging possible.Source: efw.ca — general ultrasound; efw.ca — uxborough 17; efw.ca — commonly recruited positions; efw.ca — careersCompany-stated work with source limits preserved
local connectionUxborough clinic in Calgary explicitly lists general ultrasound; employer explains the technique.Source: efw.ca — general ultrasound; efw.ca — uxborough 17; efw.ca — commonly recruited positions; efw.ca — careersSource-backed Calgary connection
course fitPerformance standards explicitly include wave speed, mechanical-wave reflection and ray/wave diagrams. Pulse-echo imaging is the applied context; clinical interpretation is outside scope.Source: alberta.ca — edc physics20 30 performance standards.pdfEditorial application of source-checked curriculum concepts
limitsKeep role-overview evidence separate from current hiring. The draft offers sonography and medical-office routes, not a shortcut into physician practice.Source: efw.ca — general ultrasound; efw.ca — uxborough 17; efw.ca — commonly recruited positions; efw.ca — careersScope of this example

Solid green: the organization states it. Outlined: seen in a dated source. Dashed: our interpretation, not yet researched, or announced but not yet real.