Download Fluoroscopy Exam Questions and Answers and more Exams Nursing in PDF only on Docsity!
Fluoroscopy||\||\ test||\||\ exam||\||\ with||\||\
correct||\||\ answers
1.||\||\ One||\||\ frame||\||\ of||\||\ a||\||\ TV||\||\ image||\||\ consists||\||\ of||\||\ how||\||\ many||\||\ lines||\||\ - ||\||\ correct||\||\ answers✔✔ 525 ||\||\ nm .||\||\ A||\||\ digital||\||\ fluoroscopy||\||\ system||\||\ with||\||\ a||\||\ 1024 ||\||\ x||\||\ 1024 ||\||\ matrix||\||\ size||\||\ is||\||\ also||\||\ called||\||\ what?||\||\ - ||\||\ correct||\||\ answers✔✔ 1000 ||\||\ line||\||\ system How||\||\ does||\||\ the||\||\ pixel||\||\ size||\||\ and||\||\ the||\||\ matrix||\||\ size||\||\ of||\||\ a||\||\ digital ||\||\ fluorography||\||\ system||\||\ effect||\||\ spatial||\||\ resolution?||\||\ - ||\||\ correct||\||\ answers✔✔Small||\||\ pixel||\||\ and||\||\ large||\||\ matrix||\||\ has||\||\ better||\||\ resolution According||\||\ to||\||\ cosine||\||\ law,||\||\ where||\||\ should||\||\ the||\||\ viewer||\||\ sit||\||\ in||\||\ relation||\||\ to||\||\ the||\||\ workstation?||\||\ - ||\||\ correct||\||\ answers✔✔Straight||\||\ one What||\||\ is||\||\ the||\||\ major||\||\ disadvantage||\||\ of||\||\ video||\||\ tape||\||\ recording||\||\ opposed||\||\ to||\||\ cinefluorography||\||\ filming||\||\ - ||\||\ correct||\||\ answers✔✔Low||\||\ resolution
What||\||\ is||\||\ normal||\||\ integration||\||\ time||\||\ for||\||\ humans?||\||\ - ||\||\ correct ||\||\ answers✔✔.2||\||\ seconds Increase||\||\ distance||\||\ between||\||\ the||\||\ patient||\||\ and||\||\ the||\||\ image ||\||\ intensifier||\||\ will||\||\ result||\||\ in||\||\ a||\||\ change||\||\ in||\||\ the||\||\ patient||\||\ radiation||\||\ dose||\||\ as||\||\ well||\||\ as||\||\ magnification||\||\ of||\||\ the||\||\ images, ||\||\ what||\||\ are||\||\ the||\||\ changes||\||\ specifically?||\||\ - ||\||\ correct||\||\ answers✔✔Increase||\||\ dose||\||\ and||\||\ increase||\||\ Magnification Where||\||\ is||\||\ a||\||\ cathode||\||\ ray||\||\ tube||\||\ located?||\||\ - ||\||\ correct||\||\ answers✔✔Close||\||\ circuit||\||\ TV||\||\ monitor Give||\||\ an||\||\ example||\||\ of||\||\ an||\||\ image||\||\ recording||\||\ system||\||\ that||\||\ captures||\||\ and||\||\ photographs||\||\ the||\||\ image||\||\ from||\||\ the||\||\ output ||\||\ phosphor||\||\ of||\||\ the||\||\ Image||\||\ Intensifier?||\||\ - ||\||\ correct||\||\ answers✔✔Cinefluorography||\||\ and||\||\ spot||\||\ film||\||\ camera Horizontal||\||\ resolution||\||\ on||\||\ a||\||\ TV||\||\ image||\||\ is||\||\ determined||\||\ by||\||\ what?||\||\ - ||\||\ correct||\||\ answers✔✔Bandpass,||\||\ the||\||\ higher||\||\ the||\||\ band||\||\ pass||\||\ the||\||\ higher||\||\ the||\||\ resolution.
||\||\ entrance||\||\ skin||\||\ dose||\||\ limit?||\||\ - ||\||\ correct||\||\ answers✔✔Unlimited Using||\||\ a||\||\ duel||\||\ focus||\||\ image||\||\ intensifier||\||\ of||\||\ 9/6||\||\ how||\||\ much||\||\ higher||\||\ is||\||\ patient||\||\ dose||\||\ using||\||\ mag||\||\ mode||\||\ opposed||\||\ to||\||\ normal||\||\ mode?||\||\ - ||\||\ correct||\||\ answers✔✔2.25||\||\ (bigger||\||\ over||\||\ smaller||\||\ and||\||\ square||\||\ them)||\||\ then||\||\ divide Name||\||\ 3 ||\||\ ways||\||\ that||\||\ a||\||\ fluoroscopist||\||\ can||\||\ minimize||\||\ dose||\||\ to||\||\ the||\||\ patient?||\||\ - ||\||\ correct||\||\ answers✔✔II||\||\ closer||\||\ to||\||\ the||\||\ patient,||\||\ shield,||\||\ collimation,||\||\ pulse||\||\ mode,||\||\ remove||\||\ grid||\||\ for||\||\ smaller||\||\ patient,||\||\ lower||\||\ rate||\||\ of||\||\ pulse||\||\ progressive What||\||\ is||\||\ vignetting?||\||\ - ||\||\ correct||\||\ answers✔✔Loss||\||\ of||\||\ brightness||\||\ in||\||\ the||\||\ periphery||\||\ of||\||\ an||\||\ image,||\||\ brighter||\||\ in||\||\ the||\||\ center,||\||\ associated||\||\ with||\||\ image||\||\ intensifier||\||\ fluoroscopy Which||\||\ fluoroscopy||\||\ technology||\||\ involves||\||\ the||\||\ direct||\||\ digitization||\||\ of||\||\ the||\||\ remnant||\||\ x-rays||\||\ exiting||\||\ the||\||\ patient||\||\ body?||\||\ - ||\||\ correct||\||\ answers✔✔Digital||\||\ or||\||\ flat||\||\ panel||\||\ fluoro?
What||\||\ is||\||\ the||\||\ ESD||\||\ for||\||\ fluoro||\||\ system||\||\ used||\||\ in||\||\ boost||\||\ mode?||\||\ - ||\||\ correct||\||\ answers✔✔20R What||\||\ is||\||\ the||\||\ function||\||\ of||\||\ the||\||\ photocathode||\||\ in||\||\ the||\||\ Image||\||\ intensifier?||\||\ - ||\||\ correct||\||\ answers✔✔Struck||\||\ by||\||\ light||\||\ and||\||\ emits||\||\ electrons What||\||\ effect||\||\ on||\||\ image||\||\ quality||\||\ does||\||\ manipulating||\||\ the||\||\ window||\||\ level||\||\ have?||\||\ - ||\||\ correct||\||\ answers✔✔Brightness,||\||\ (the||\||\ midpoint||\||\ of||\||\ the||\||\ gray||\||\ scale||\||\ that||\||\ is||\||\ displayed) What||\||\ component||\||\ of||\||\ a||\||\ fluoro||\||\ system||\||\ does||\||\ a||\||\ charge||\||\ couple||\||\ device||\||\ replace?||\||\ - ||\||\ correct||\||\ answers✔✔TV||\||\ camera||\||\ tube During||\||\ non||\||\ digital||\||\ fluoroscopy||\||\ at||\||\ what||\||\ MA||\||\ range||\||\ does ||\||\ the||\||\ tube||\||\ typically||\||\ operate||\||\ at?||\||\ - ||\||\ correct||\||\ answers✔✔1- 5 ||\||\ MA What||\||\ does||\||\ DICOM||\||\ stand||\||\ for||\||\ and||\||\ what||\||\ does||\||\ it||\||\ do?||\||\ - ||\||\ correct||\||\ answers✔✔Digital||\||\ imaging||\||\ communication||\||\ in ||\||\ Medicine||\||\ (enables||\||\ systems||\||\ from||\||\ different||\||\ manufactures||\||\ to||\||\ communicate)
Which||\||\ fluoroscopy||\||\ technology||\||\ represents||\||\ the||\||\ most||\||\ up||\||\ to||\||\ date||\||\ imaging||\||\ system?||\||\ - ||\||\ correct||\||\ answers✔✔Flat||\||\ panel||\||\ (both||\||\ detector||\||\ and||\||\ monitor) What||\||\ is||\||\ scotopic||\||\ vision?||\||\ - ||\||\ correct||\||\ answers✔✔Night||\||\ vision What||\||\ is||\||\ the||\||\ minification||\||\ gain||\||\ for||\||\ a||\||\ 20cm||\||\ image||\||\ intensifier||\||\ with||\||\ a||\||\ 2.5cm||\||\ output||\||\ phosphor?||\||\ - ||\||\ correct||\||\ answers✔✔ 64 ||\||\ (input||\||\ phosphor||\||\ diameter||\||\ squared||\||\ over||\||\ output||\||\ phosphor||\||\ diameter||\||\ squared) What||\||\ effect||\||\ on||\||\ image||\||\ quality||\||\ does||\||\ manipulating||\||\ the||\||\ window||\||\ width||\||\ on||\||\ image||\||\ display||\||\ device||\||\ have?||\||\ - ||\||\ correct||\||\ answers✔✔Contrast During||\||\ a||\||\ C-arm||\||\ fluoro||\||\ procedure||\||\ which||\||\ the||\||\ unit||\||\ is||\||\ in||\||\ the||\||\ lateral||\||\ position||\||\ largest||\||\ amount||\||\ of||\||\ scatter||\||\ will||\||\ be||\||\ received||\||\ by||\||\ a||\||\ person||\||\ standing||\||\ on||\||\ which||\||\ side||\||\ of||\||\ the||\||\ C- arm?||\||\ - ||\||\ correct||\||\ answers✔✔Tube||\||\ side
The||\||\ ESD||\||\ should||\||\ not||\||\ exceed||\||\ what||\||\ level||\||\ in||\||\ mGy/min||\||\ for||\||\ fluoroscopy||\||\ units||\||\ under||\||\ normal||\||\ operation?||\||\ - ||\||\ correct||\||\ answers✔✔ 100 The||\||\ threshold||\||\ dose||\||\ for||\||\ erythema||\||\ will||\||\ be||\||\ reached||\||\ after ||\||\ how||\||\ much||\||\ fluoro||\||\ time||\||\ in||\||\ non||\||\ boost||\||\ mode?||\||\ - ||\||\ correct||\||\ answers✔✔ 2 ||\||\ hours A||\||\ fluoroscopic||\||\ system||\||\ is||\||\ equipped||\||\ with||\||\ an||\||\ automatic||\||\ brightness||\||\ exposure||\||\ control||\||\ mechanism||\||\ what||\||\ happens||\||\ to||\||\ the||\||\ exposer||\||\ factors||\||\ and||\||\ radiation||\||\ dose||\||\ when||\||\ the||\||\ patient||\||\ is||\||\ turned||\||\ from||\||\ a||\||\ supine||\||\ to||\||\ lateral||\||\ position?||\||\ - ||\||\ correct||\||\ answers✔✔Increase||\||\ exposure||\||\ factors||\||\ and||\||\ increase||\||\ patient||\||\ dose What||\||\ is||\||\ lag?||\||\ - ||\||\ correct||\||\ answers✔✔Blur||\||\ caused||\||\ by||\||\ a||\||\ function||\||\ of||\||\ the||\||\ TV||\||\ camera||\||\ tube.||\||\ when||\||\ switching||\||\ from||\||\ high||\||\ dose||\||\ to||\||\ low||\||\ dose||\||\ techniques. Name||\||\ two||\||\ advantages||\||\ of||\||\ image||\||\ intensifier||\||\ fluoroscopy||\||\ over||\||\ non||\||\ image||\||\ intensified||\||\ fluoroscopy?||\||\
- ||\||\ correct||\||\ answers✔✔Image||\||\ brightness||\||\ and||\||\ decreased||\||\ patient||\||\ dose
and||\||\ the||\||\ beam||\||\ on||\||\ time||\||\ is||\||\ doubled||\||\ to||\||\ 2 ||\||\ minutes?||\||\ - ||\||\ correct||\||\ answers✔✔2.5||\||\ mrem One||\||\ field||\||\ of||\||\ a||\||\ TV||\||\ image||\||\ consists||\||\ of||\||\ how||\||\ many||\||\ lines?||\||\ - ||\||\ correct||\||\ answers✔✔262. The||\||\ movement||\||\ of||\||\ the||\||\ electron||\||\ beam||\||\ in||\||\ the||\||\ TV||\||\ picture||\||\ tube||\||\ is||\||\ referred||\||\ to||\||\ as||\||\ a?||\||\ - ||\||\ correct||\||\ answers✔✔Raster||\||\ pattern Which||\||\ imaging||\||\ recording||\||\ system||\||\ usually||\||\ results||\||\ in||\||\ the||\||\ highest||\||\ overall||\||\ patient||\||\ and||\||\ occupational||\||\ dose?||\||\ - ||\||\ correct||\||\ answers✔✔Cinefluoroscopy For||\||\ stationary||\||\ fluoro||\||\ units||\||\ source||\||\ to||\||\ skin||\||\ distance||\||\ by||\||\ CA||\||\ law||\||\ shall||\||\ not||\||\ be||\||\ less||\||\ than?||\||\ - ||\||\ correct||\||\ answers✔✔38cm What||\||\ part||\||\ of||\||\ the||\||\ eye||\||\ dilates||\||\ and||\||\ constricts||\||\ controlling ||\||\ the||\||\ amount||\||\ of||\||\ light||\||\ falling||\||\ on||\||\ the||\||\ retina?||\||\ - ||\||\ correct||\||\ answers✔✔Iris
What||\||\ component||\||\ of||\||\ a||\||\ fluoroscopy||\||\ system||\||\ do||\||\ flat||\||\ panel||\||\ image||\||\ receptors||\||\ replace?||\||\ - ||\||\ correct||\||\ answers✔✔Image||\||\ intensifier||\||\ or||\||\ TV||\||\ camera||\||\ tube Dead||\||\ pixels||\||\ in||\||\ an||\||\ image||\||\ detector||\||\ will||\||\ produce||\||\ what||\||\ type||\||\ of||\||\ artifact?||\||\ - ||\||\ correct||\||\ answers✔✔White||\||\ images||\||\ on||\||\ the||\||\ screen||\||\ that||\||\ have||\||\ nothing||\||\ to||\||\ do||\||\ with||\||\ the||\||\ anatomy The||\||\ unit||\||\ of||\||\ Illuminance||\||\ is||\||\ called?||\||\ - ||\||\ correct||\||\ answers✔✔Lux What||\||\ does||\||\ DAC||\||\ stand||\||\ for?||\||\ - ||\||\ correct||\||\ answers✔✔Digital||\||\ to||\||\ analog||\||\ converter During||\||\ closed||\||\ circuit||\||\ TV||\||\ monitoring||\||\ 2 ||\||\ electron||\||\ guns||\||\ scan||\||\ synchronously||\||\ where||\||\ are||\||\ they||\||\ located?||\||\ - ||\||\ correct||\||\ answers✔✔Camera||\||\ (CRT)||\||\ and||\||\ monitor How||\||\ many||\||\ frames||\||\ per||\||\ second||\||\ to||\||\ avoid||\||\ flicker||\||\ on||\||\ a||\||\ closed||\||\ circuit||\||\ TV||\||\ image?||\||\ - ||\||\ correct||\||\ answers✔✔ 20 ||\||\ frames||\||\ per||\||\ second
