Philips Azurion - Page 23

• Select the largest suitable eld siz
e for the current procedure (per X-ray plane).
• Use the radiaon disable switch at all mes to prevent accidental exposure to radiaon (except
when the radiaon procedure is in progress).
• Shield sensive organs when they are exposed to the beam or are in proximity to it.
• Use cauon if the paent has acute skin burns or acute hair loss.
• Minimize the duraon of radiaon in uoroscopy and exposure acquision. Modifying sengs like
collimaon, can also be performed while the last image hold image is displayed.
• Collimate as much as possible and posion the detector as close as possible to the object.
• Keep the paent as far as possible from the X-ray source, using the table height seng.
• Keep the focal spot to skin distance as large as possible.
• Use dierent X-ray beam projecons, to spread radiaon over the skin.
• Avoid oblique projecons, in order to reduce the depth of ssue irradiated.
• Consider using uoroscopy instead of exposure acquision.
• Clear the primary beam of unnecessary objects. They may cause adverse aects such as
unnecessary paent dose and misinterpretaon of images.
• Use only the prescribed air kerma (rate) necessary to perform a procedure.
• Release all hand switches and foot switches if the display of live images stops.
• Release and depress the hand switch or foot switch again when the requested X-ray does not start
or stop automacally.
• Posion the paent and the system as accurately as possible without using radiaon.
• Avoid including the table rails in the X-ray image. This can cause unnecessary radiaon load for the
paent.
Sta Safety
• Make full use of the system’s radiaon protecon features, devices, accessories, and procedures
that are available to you as the operator. For more informaon, see Using Radiaon
Shields (page 65).
• Always wear a lead apron and use badges to monitor the radiaon received.
• Stay as far away from the radiated object as possible.
• Use cauon if any member of sta has a chronic radiaon injury.
• Remove all unnecessary obscuring objects from the primary beam (including the operator’s hands).
• Keep the X-ray source under the table.
• Do not aempt to remove, modify, override, or frustrate any safety device on the equipment.
NOTE When door contacts should give a warning for radiaon using the room warning light, the
conguraon of the door contacts should be implemented by the user.
More Informaon
The following table summarizes the eects of the most signicant measures on skin dose rate, air
kerma rate, dose area product, and sta dose.
Measure
Eect on skin
dose r
ate
Eect on
Ref.AK-rate
Eect on DAP-
rate
Eect on sta
dose
Selecng the appropriate X-ray protocol
dose level
+ + + +
Reducing framespeed (by X-ray protocol/
mulphase)
+ + + +
Selecng the largest eld size + + - -
Liming the duraon of uoroscopy/expo-
sure
+ + + +
Applying proper collimaon and wedges 0 0 + +
Increasing the distance from the paent to
the X-ray source (at a constant SID)
+ 0 0 0
Safety Radiaon Sa
fety
Azurion Release 1.2 Ins
trucons for Use 23 Philips Healthcare 4522 203 52421