Fluke Biomedical 07-706 - Manual (Page 6)

Nuclear Associates 07-706
Operators Manual
1-2
Measuring the Patient Entrance Exposure Rate in Image-Intensified Fluoroscopic
Equipment
Equipment
07-706 Patient Phantom/Penetrometer
06-526 “Rad-Check Plus” X-Ray Exposure Meter
07-707 Stop Watch (or equivalent)
Figure 1-1
Procedure for Maximum Exposure Rate
A. Source Under Table
1. Position the “Rad-Check Plus” (detector side down) on the x-ray table so its sensitive volume is in
the center of the x-ray field. This is best done by viewing the fluoroscopic image of the “Rad-
Check Plus” and moving it or the x-ray tube as necessary. The detector presents a circular
shape in the fluoroscopic image. When properly centered, lock the tube carriage and mark the
position of the “Rad-Check Plus” on the table.
2. Place the Patient Phantom/Penetrometer (2 blue blocks plus lead block) on the “Rad-Check Plus”
(see Figure 1-2). Collimate the beam so it does not extend beyond the edges of the phantom.
Lower the image tube intensifier to its lowest height (but not less than 30 cm from the tabletop).