Radiology Quiz on X-Ray Instrument Issues
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Questions and Answers

What problem does the image present regarding the instrument?

  • The image is too small to analyze.
  • The image does not contain any instruments.
  • The image is too blurry to extract meaningful information. (correct)
  • The image is too dark to see the instrument clearly.

What action cannot be performed due to the condition of the image?

  • Extract the color details of the instrument.
  • Create a structured markdown format. (correct)
  • Identify the material used for the instrument.
  • Compare it with other instruments.

What is the suggested next step regarding the image of the instrument?

  • Add annotations to the image.
  • Enhance the image quality.
  • Provide a clearer image. (correct)
  • Ignore the image entirely.

Why is transcribing the text from the image not possible?

<p>The image is too blurry. (D)</p> Signup and view all the answers

What could be an implication of having a blurry image?

<p>Inaccurate identification of the instrument. (A)</p> Signup and view all the answers

What is the primary function of Positive Beam Limitation (PBL) in modern X-ray systems?

<p>To adjust the X-ray beam size to the image receptor (B)</p> Signup and view all the answers

What is a significant advantage of adjustable height X-ray tables?

<p>They improve patient comfort and safety (A)</p> Signup and view all the answers

What technique is essential for minimizing unnecessary radiation exposure during X-ray procedures?

<p>Proper collimation (D)</p> Signup and view all the answers

Which type of X-ray table allows for full vertical tilt in both directions?

<p>90/90 table (B)</p> Signup and view all the answers

What is the primary function of the anode in the X-ray tube?

<p>To convert kinetic energy into X-rays and heat (C)</p> Signup and view all the answers

What should be avoided when cleaning X-ray tables to prevent damage?

<p>Using abrasive cleaners (C)</p> Signup and view all the answers

Which material is commonly used for the cathode wire in an X-ray tube?

<p>Tungsten (D)</p> Signup and view all the answers

What accelerates the electrons from the cathode to the anode in an X-ray tube?

<p>The kilovoltage peak (kVp) (B)</p> Signup and view all the answers

What is thermionic emission in the context of an X-ray tube?

<p>The release of electrons due to filament heating (B)</p> Signup and view all the answers

Which component of the X-ray tube is responsible for providing support during positioning?

<p>Tube stand or overhead crane (B)</p> Signup and view all the answers

What is the primary function of the collimator in an x-ray machine?

<p>To shape and size the x-ray field (A)</p> Signup and view all the answers

What does the term 'coning down' refer to in radiographic procedures?

<p>Increasing collimation to reduce the field size (C)</p> Signup and view all the answers

What is the purpose of the high-intensity light bulb in some x-ray systems?

<p>To project the x-ray field onto the patient (B)</p> Signup and view all the answers

What material is often used to shield the underside of the collimator?

<p>Plexiglas (D)</p> Signup and view all the answers

Which of the following is NOT a feature integrated into modern collimators?

<p>Gas tube intensity adjuster (C)</p> Signup and view all the answers

What is the primary function of the x-ray generator?

<p>To produce electrical waves that generate x-rays (A)</p> Signup and view all the answers

Which factor is NOT a key control on the control console?

<p>Digital imaging settings (D)</p> Signup and view all the answers

How is the penetration power of the x-ray beam determined?

<p>By the kilovoltage peak (kVp) settings (D)</p> Signup and view all the answers

What does the term mAs refer to in an x-ray system?

<p>The product of milliamperage and time (D)</p> Signup and view all the answers

What does selecting a higher kVp value do?

<p>Enhances the penetration power of the x-ray beam (A)</p> Signup and view all the answers

Which feature is necessary before x-ray production can occur?

<p>Turning on the main power switch (A)</p> Signup and view all the answers

Which of the following statements is true about milliampere settings?

<p>They indicate how much current is supplied to the x-ray tube (A)</p> Signup and view all the answers

Which component of the x-ray system could allow for lateral cross-table imaging?

<p>Digital detector (D)</p> Signup and view all the answers

What factors determine the quality of an X-ray image?

<p>The exposure time and mAs (D)</p> Signup and view all the answers

In which mode is the generator programmed to use the highest allowable mA to achieve shorter exposure times?

<p>mA mode (C)</p> Signup and view all the answers

What happens if the mAs value is insufficient during an X-ray procedure?

<p>It can result in grainy images (B)</p> Signup and view all the answers

What does mAs stand for in X-ray exposure techniques?

<p>Milliamperes and seconds (D)</p> Signup and view all the answers

What role does the electronic timing circuit play in X-ray exposure?

<p>It controls the duration of the exposure (C)</p> Signup and view all the answers

Flashcards

X-ray tube component

Part of the radiographic system that produces X-rays, encased in lead-lined metal housing

Cathode function

Negatively charged part of the X-ray tube, releases electrons when heated

Anode function

Positively charged part, converts electron energy to X-rays and heat

kVp (kilovoltage peak)

High voltage accelerating electrons, crucial for X-ray production

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Thermionic emission

Electron release from heated cathode filament

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Collimator function

The collimator controls the size and shape of the x-ray beam.

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Collimation adjustment

Radiographers adjust collimator controls to define the x-ray field rectangle.

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Coning down

Increasing collimation, reducing the x-ray beam's size.

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Rotating anode function

Rotating tungsten disc in x-ray tubes, withstands high milliamperage exposures.

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X-ray field projection

X-ray field projected onto patient using light bulbs, often with mirrors, or LED Lights.

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PBL

Positive Beam Limitation automatically adjusts the X-ray beam size to match the image receptor, minimizing patient exposure.

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Collimation

Controlling the size and shape of the X-ray beam to cover only the area of interest, reducing unnecessary radiation exposure.

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Tilting table

An X-ray table that can tilt to various angles, allowing versatile patient positioning for different exams.

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90/90 tilting table

A tilting table that can fully tilt vertically in both directions, offering a wide range of positions.

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90/45 tilting table

This type can fully tilt in one direction and 45 degrees in the other, providing flexibility for certain procedures.

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What is an X-ray tube?

A key component in a radiographic system that produces X-rays. It's encased in a lead-lined metal housing to prevent harmful radiation from escaping.

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What does the cathode do?

The cathode is the negatively charged part of the X-ray tube. It releases electrons when heated, which are crucial for X-ray production.

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What does the anode do?

The anode is the positively charged part of the X-ray tube. It converts the energy of the electrons into X-rays and heat.

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What is kVp?

kVp, or kilovoltage peak, refers to the high voltage applied to the X-ray tube. It determines the energy and penetrating power of the X-rays.

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What is thermionic emission?

Thermionic emission is the process of releasing electrons from the heated filament of the cathode.

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Exposure Time

The duration of X-ray radiation reaching the patient and image receptor, measured in seconds or milliseconds.

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mA mode

The generator uses the highest possible mA to achieve the shortest exposure time, prioritizing speed.

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Time mode

The exposure time is predetermined, often used for studies of moving anatomy.

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Why is mAs important?

mAs directly influences patient exposure and image quality. Too low mAs results in a grainy image (quantum mottle) hindering visibility of anatomy.

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Digital Detector

A device that captures and converts X-ray energy into digital signals, allowing for direct digital imaging.

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Bucky Mechanism

A mechanism that moves the digital detector along the length of the table, allowing for different positions and X-ray capture.

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X-ray Generator

The equipment that produces X-rays, composed of an electronics cabinet and an operator console.

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mAs (Milliampere Seconds)

The amount of radiation produced by the X-ray tube, calculated by multiplying the current (mA) by the exposure time (seconds).

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Main Power Switch

Turns on the X-ray system's power, but does not start X-ray production. Other settings are needed before exposure.

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Exposure Controls

The controls on the console that initiate, terminate, and adjust the X-ray exposure.

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AEC (Automatic Exposure Control)

A system that automatically adjusts the exposure time to deliver the desired level of radiation to the detector.

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