A. Green area represents a large Field of View area. B. Green area represents a small Field of View area.
About[]
A Field of View (FOV) is an area, field region, or angle of view. Changing from a large field of view to an increased magnification increases the exposure required by the image intensifier tube. Therefore, the absorbed dose to tissues within the beam is also increased. Decreasing the field of view by a factor of two increases the dose rate by a factor of four. Attention has to be paid to magnification.[1] Typically, FOVs range from 6" (small FOV), 9" (standard FOV), and 12" (large FOV) but can vary depending on OEM.
Reference[]
- ↑ International Atomic Energy Agency. "Fluoroscopy" Acccessdate 4 Jan 2014. https://rpop.iaea.org/rpop/rpop/content/informationfor/healthprofessionals/1_radiology/fluoroscopy.htm