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AP 2 - Book

Fluoroscopy - Lecture 2

QuestionAnswer
What imaging is useful for guiding a variety of diagnostic and interventional procedures, ability to display motion provided by a continuous series of images produced at a rate of ______ complete images per second, and allows imaging of: 1. 2. 3. Real time or Dynamic Imaging; 25-30; 1. Organs in motion as they fill with contrast media 2. Visualization of mucosal lining of the structures 3. Functioning of organ being examined
Conventional Fluoroscopy Components: 1. 2. 3. 4. 5. 1. X-ray Table 2. Fluoroscopic Tube 3. Image Intensifier Tube 4. Overhead X-ray Tube 5. Flat Panel TV Monitors
Fluoroscopic Tube is located ______ the table Under
The Fluoroscopic Tube continually emits radiation during the procedure when activated by a foot pedal or handle switch on the fluoro tower, otherwise known as a ________ type switch. "deadman"
Radiation is emitted upward through the patient to an Image Intensifier located ______ the patient Above
Uses a detector array to record spot images that are displayed on the TV monitor without the use of Image Receptors Digital Fluoroscopy
The image during Digital Fluoroscopy is converted to digital format with an ______-______-______ Analog-digital-converter (ADC)
What capability allows images to be recorded in rapid succession (four per second) and displayed as moving images, used when performing an Esophogram/Barium Swallow? Cine Loop capability
Images taken by the Radiologist during the Fluoroscopic procedure Spot Images
Images taken by the Technologist at the conclusion of the procedure Overhead Images
The difference between Spot images and Overhead images is that the X-ray Tube for Spot imaging is ______ the table, changing the projection performed. Under
When a patient is supine on the x-ray table, the will be in an ___ Projection using the Overhead Tube. AP
When a patient is supine on the x-ray table and a Spot Image is taken, it will be a ___ Projection. PA
3 basic priniciples of ALARA: 1. 2. 3. 1. Time 2. Distance 3. Shielding
______ ______ involves periodic activation of the fluoroscopic tube, rather than continuous activation. Intermittent Fluoroscopy
The most effective method of reducing dose during a fluoroscopic procedure is to increase the ______ from the x-ray tube Distance
doubling the distance between the x-ray tube and the worker reducing dose by a factor of 4 is known as what? Inverse Square Law
Where should the technologist stand during a fluoroscopic procedure? Behind the Radiologist
What is the long term effect of radiation to the eyes if protective eyewear is not worn? Cataracts
Worn during the examination if the patient condition or examination requires placing hands in the radiation field or immobilizing the patient Lead Gloves
Worn on the outside of the apron at collar level Radiation Dosimeter
Primary source of scatter radiation during the fluoroscopic examination is the ______ Patient
Positioned between the Radiologist (or technologist depending on the procedure) and the patient to intercept scattered radiation Protective lead drape or sliding panel shielding
covers the bucky slot opening in the side of the x-ray table during fluoroscopic examinations; this shielding device protects the Radiologists and technologist at the gonadal level Bucky slot cover/shield
produces an audible signal when 5 minutes of fluoro time has been used Cumulative timing device
To reduce radiation to both the patient and personnel in fluoroscopy Intermittent or Pulsed Fluoroscopy
When preparing for a Fluoroscopic procedure, you should? Position Bucky tray at end of table and lock in place
AP 2 - Book Fluoroscopy - Lecture 2
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