Post-test

What is Effective Dose Equivalent (EDE)?

Dose x Modifying Factor

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Steep angles required to create a more effective radiation dose

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Inverse square law

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Amount of dose at low frame rates in pregnant patients

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The last image hold allows the physician to:

Display the last fluoroscopy image acquired on the monitor to discuss next steps.

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Interpret the image without only minimal additional radiation exposure.

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Increase the distance between the patient and the tube head without altering the last image acquired.

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Continue pressing the pedal without additional radiation exposure.

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What is assessed in the comprehensive quality system checks in fluoroscopy?

Procurement and quality control of the equipment

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Evaluation of methods and measurement of dose to patients and personnel

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Educational program to ensure adequate knowledge on radiation protection and dose control techniques

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All of the above

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What are ways to minimize worker dose in fluoroscopy?

Fluoro at low dose rates

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Wear a lead apron.

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Stay as far from patient as possible.

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All of the above

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The equivalent of one adult chest X-ray is ____ days of usual background radiation that we are always exposed to in ambient conditions.

1 day

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10 days

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100 days

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30 days

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What is the definition of X-ray dose?

Exposure to cosmic rays leading to cancer risk

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Different kinds of radiation including alpha

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Measure of energy absorbed by tissue

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Where there is no risk to ionizing radiation with each dose of fluoroscopy given

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Moving the patient towards the detector reduces the entry skin dose to the patient, which reduces the potential for radiation injury.

True

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False

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What is the position of the foot for a Broden View?

Internal rotation of the foot to 45 degrees

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Plantarflexion of the foot with 15 degrees of external rotation

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Forefoot angled to 15 degrees

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Elevate the forefoot on a 15-degree wedge

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On an AP of the ankle, what is the average lateral distal tibial angle (LDTA)?

70 degrees

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80 degrees

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89 degrees

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120 degrees

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What is the indication for arthrography?

Cartilaginous defects

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Suspected capsular damage

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Rupture of articular ligaments

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All of the above

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If you have hypersensitivity to iodine, you are not a candidate for ankle arthrography.

True

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False

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What anesthetic is least toxic when used for tenography and arthrography injections?

Lidocaine

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Septocaine

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Ropivicaine

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Levobupivacaine

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What is the main source of radiation exposure for the surgeon is

A narrow tube head angle

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A short distance between the patient and the tube head

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Scatter off of the patient

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The position of the foot

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What is an advantage to perform minimally invasive surgery (MIS)?

Less pain

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Faster recovery

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Improved cosmesis

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All of the above

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During a subtalar joint fusion with fluoroscopy, what is a way to minimize radiation exposure?

Determine tube angulation.

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Collimate area to be exposed.

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Wear a leaded apron.

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All of the above

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