All Correct Answers
Viewing the fluoroscopic image in magnification mode increases _____. - Answer ✔
contrast resolution
spatial resolution
patient dose
Automatic brightness control (ABC) maintains the brightness of the image by varying
_____. - Answer ✔ kVp and mA
During fluoroscopy, the SOD on a fixed unit cannot be less than ____ inches. - Answer
✔ 15
Photoemissive materials absorb ____ and emit ____. - Answer ✔ light photons;
electrons
Electrostatic lenses are actually - Answer ✔ charged electrodes.
The greater the voltage supplied to the electrostatic lenses, the ____ the acceleration
and the ____ the focal point to the input screen. - Answer ✔ greater; closer
During fluoroscopy, the principal source of radiation exposure to personnel in the room
is the - Answer ✔ patient.
Methods to reduce fluoroscopic radiation exposure include:
1.automatic brightness control
2. Bucky tray slot cover
3. switching to magnification imaging
4. fluoroscopic lead apron drape
5. dead-man type fluoroscopy switch
6. LIH
7. increase the SID
8. decrease the SOD
9. decrease the IOD - Answer ✔ 1, 2, 4, 5, 6 and 9
1.automatic brightness control
2. Bucky tray slot cover
4. fluoroscopic lead apron drape
5. dead-man type fluoroscopy switch