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Questions and Answers
What is the primary function of the K Calc feature?
Which button should you press to begin a study and input patient information?
What is the purpose of the Guide function when using the ultrasound device?
Which knob is primarily responsible for inputting patient information into the ultrasound machine?
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What function does the Soft keys feature serve in the ultrasound device?
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What is the purpose of the 'Exam' knob on an ultrasound machine?
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What is the correct use for the Text button on the ultrasound device?
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How does the ‘Depth’ control affect what is viewed on an ultrasound image?
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What action does the 'Freeze' button perform on the ultrasound machine?
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Which knob allows the operator to adjust the brightness of the entire ultrasound image without increasing sound energy intensity?
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Study Notes
Ultrasound Knobology Basics
- Ultrasound image quality heavily depends on operator skill in using machine controls.
- Knobology refers to manipulating ultrasound controls to optimize image quality, impacting diagnosis.
Basic Ultrasound Knobs and Controls
- Power Button: Switches the ultrasound machine on, enabling transducer function (electrical to mechanical energy conversion).
- Patient Button: Initiates patient information input, and sometimes operator information.
- Select Button: Functions like a laptop trackpad clicker.
- Trackpad: Controls cursor movement like a laptop trackpad.
- Exam Button: Optimizes frame rate and grayscale for various applications (e.g., cardiac, abdominal, obstetric studies).
- Freeze Button: Freezes the on-screen image; trackpad allows for image review.
- Save Button: Saves a still image.
- Clip Button: Records a short video clip (default 6 seconds).
- Depth Control: Adjusts the imaging depth; increasing shows deeper structures, decreasing shows superficial structures.
- Gain Control: Adjusts overall image brightness. "Near" and "Far" settings adjust gain for superficial and deep fields of view respectively. Overall gain adjusts brightness without increasing transmitted sound energy intensity.
- Time Gain Compensation (TGC): Modifies attenuation at specific depths.
- M-mode (Motion Mode): Creates a line (icepick) over a structure; a second press generates an M-mode image (useful for fetal heart rate).
- Calc Button: Calculates fetal heart rate.
- Caliper Button: Measures distance between two points; trackpad moves calipers.
- Color Button: Activates color Doppler, visualizing blood flow and direction.
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Soft Keys: Bottom screen functions, including:
- Guide: Creates a guide marker for procedures (e.g., IV insertion). Primarily used with small linear probes.
- New/End: Marks the beginning and end of a study (press before entering patient info and again upon study completion).
- Text Button: Adds text labels and descriptions to images (e.g., orientation, "R KID LONG").
- 2D Button: Returns to the basic 2D view.
Probes
- Doppler Probes: Used for blood vessel assessment and Doppler blood flow evaluation.
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Description
This quiz focuses on the fundamental controls and functions of ultrasound machines, a crucial aspect of effective imaging. It guides you through various buttons and adjustments that impact image quality and diagnostic capabilities. Test your knowledge on optimizing ultrasound techniques for better patient outcomes.
