1. Medical Physics Update Photophysics Sub Group
Nadia Latif
Clinical Scientist, NHS Grampian
Photonet National Managed Clinical Network

2. Photonet Standard 5b Photophysics sub group review
– annual audit results
– dosimetry and calibration protocols
– variations in Photonet and local centres data
– Patient and staff safety arrangements
– Staff training

3. Variations in Irradiance Measurements
UV Cabinets
5b.7- Variations in irradiance measurements between the Photonet and the local centre should be <20%
- Variations for some centres >20%
- Standardise UV meter calibration
- Calibration at Ninewells
- Variations for all centres <20%

4. Lightweight Phototherapy Phantom
The Control of Artificial Optical Radiation (AOR) at Work Regulations 2010
Phantom proposal
NSS released funding
Medical Devices Department, NHS GGC
Eliminate risk of UV exposure

5. Irradiance Measurements
Hand and Foot Unit
Photonet dosimetry visits
Increased workload of Photonet technician
Draft dosimetry protocol
Variations review after first round of measurements

6. Evidence of Staff Training and Continual Competence (5b.6)
Difference in local training documents
What standard staff should be trained to?
Generic Document for Scotland
Draft document developed and discussed

7. MED Testers Calibration of MED testers
Photonet responsible for governance not the service
Local Medical Physics Departments lack resources
Ninewells agreed to provide calibration services

8. MPD Tester Temperature issue Decision
- Temperature of the unit reaching very high (75°C within 15 minutes)
- British Standards temperature of device in contact with the
patient should not exceed 48°C
Decision
- Decided not to pursue the use of the handheld MPD device at the
present time and to continue to use the Davlin patches and bank of
lights.

9. Phototherapy Equipment Feedback
New units
- Davlin UVB Cabinet – easier for wheel chair user
- Waldman 5002 UVB cabinet
Problems
-Davlin unit - tripped due to electrical faults
- Waldman longer exposure due to sensor blockage by patient’s
hands.

10. Investigation of Different Types of Eyewear and Faceshields
Operator and patient protection
No correlation between price and protection level
Protection between 300nm – 400nm
New faceshield or eyewear?
Britton J, Eadie E, Turner D. An investigation of different types of eyewear and face shields in protecting patients and operators from the harmful effects of ultraviolet radiation. Photodermatol Photoimmunol Photomed. 2019;00:1–9.

11. Use of Wide Angled camera
For checking worn out lamps
Limit UV exposure of Staff
Simple to Use – mobile/laptop
Cost effective way of eliminating risk of UV exposure

12. PUVA Patients Glasses Lack of uniform guidance Transmission checks
Prescription glasses fails transmission criteria?
Decision made to develop a uniform guidance for Scotland

13. Thank You Nadia Latif Photophysics Sub Group Clinical Scientist, NHSG
Photonet National Managed Clinical Network
Thank You
Photophysics
Sub Group
Nadia Latif
Clinical Scientist, NHSG