**7. Characteristics of RPLGD for clinical applications**

The clinical applications of RPLGD characteristics are summarized in the followings:

1. Repeatable readout

The luminescence signal does not disappear after readout; therefore, repeated readout for a single exposure is possible for RPLGD.

2. Small difference in individual sensitivity

The readout variation between different PRLGDs with the same exposure is small. RPLGD is manufactured with melted glass; therefore, its individual sensitivity is small as compared to that of either TLD or OSLD.

3. No correction factor needed

The luminescence single can be converted to the exposure dose directly without the need of correction factors. The exposure dose can be determined with the help of readout from reference PRLGD built-in to the readout system.

4. Small energy dependence

The energy dependence existed in FD-7 glass, if there is no energy compensator filter with it. However, energy dependence can be reduced with energy compensator filter.

5. Small fading effect

The stability of color centers in RPLGD is high. Hence the effects of environment conditions such as humidity and temperature have very little impact to color centers, hence low fading effects for RPLGD.

6. Better reproducibility

By using pulse ultra-violet laser as excited source, the accuracy of repeated readout can be maintained. Therefore, RPLGD has a very good reproducibility.

7. Wide measurable dose range

The dose linearity range for RPLGD is 0 – 500 Gy. This range covers the dose range used in the medical field. RPLGD can therefore be applied for dose verification in radiotherapy as well as in diagnostic radiology. RPLGD is also desirable for high dose gradient area, such as IMRT (Intensity Modulated Radiotherapy) procedures or HDR (High Dose Rate Remote Afterloader) procedures because of its small effective readout area.

8. Feasibility of personal dose monitor tools

The characteristics, physical and chemical, of RPLGD are equal to or better than that of TLD and OSLD because of its luminescence material and readout technique. Hence, RPLGD can be used as dose monitor for radiation field worker.
