Set the x-ray head in a horizontal / parallel position (12″ from wall, 50″ high)
and measure (using the same numbers previously mentioned)
from the focal spot or end of the PID to the cassette location.
![](https://margrafdental.com/wp-content/uploads/2021/02/015_15reverse.jpg)
Check for adequate space for patient accessibility and seating.
Another room – Start with positioning the x-ray head
Standard Left to Right direction
![](https://margrafdental.com/wp-content/uploads/2021/02/017_17.jpg)
If the distance is too close, then an option would be to attach the Patient Head Positioner / Cassette Holder to the adjacent wall.