Skin Dose Monitor (SDM)

The X-ray Exposure Monitor

Will an Image of the Sensor Fibre be Seen on the Fluoro Monitor or Films?
The active tip of the sensor will be seen, but it is only 1mm in diameter and 0.2mm thick.  The fibre will not show on fluoro images, but may just be visible on a chest film.

How do I Select the Sensor Location?
This is dependent on the examination.  In some cases it is known where the centre of the radiation beam will be located on the patients skin.  In other cases the sensor placement can be differed until the optimum radiation beam direction is established.  Fixing the sensor then only takes a few seconds.

Does the Instrument Require a Special Installation?
No.  Make sure the batteries are charged, plug in the sensing fibre and the system is fully operational.

Is the Dose Display Accurate?
The sensor measures absorbed dose directly, not air kerma.  Calibration can be checked locally against a reference instrument.  The accuracy is well within the limits suggested by the FDA as necessary for patient risk assessment.

Is the Instrument Safe?
The optical fibre of the sensor provides an effective means of electrically isolating the sensor pad.

Link: www.mcmahonmedical.com