15 August 2020
: Case report 
A 57-Year-Old African American Man with Severe COVID-19 Pneumonia Who Responded to Supportive Photobiomodulation Therapy (PBMT): First Use of PBMT in COVID-19
Unusual or unexpected effect of treatment
Scott A. Sigman1ABCDEF*, Soheila Mokmeli2ABCDEF, Monica Monici3A, Mariana A. Vetrici4BCDEFDOI: 10.12659/AJCR.926779
Am J Case Rep 2020; 21:e926779
Table 1. Laser parameters for COVID-19 pneumonia patients.
| 808 nm (GaAlAs) diode | 905 nm (GaAs) diode | |
|---|---|---|
| Mode of radiation | Pulsed | Pulsed |
| Frequency | 1500 Hz, (Duty Cycle 50%) (1 Hz÷2 kHz) | 1500 Hz (90 kHz Modulated at 1 Hz÷2 kHz) |
| Pulse duration | 333 μs (500 ms÷250 μs) | 100 ns |
| Peak power | 3 W | 75W×3 |
| Average power | 1.5 W | 11.25×3=33.75 mW |
| Spot size | 19.625 cm | |
| Area | On each lung25×10=250 cm | |
| Dose | 7.1–7.2 J/cm | |
| Distance from the skin | 20 cm | |
| Treatment time | 14 minutes each lung | |
| Total energy | 3600 J1794.24 each lung | |
| Total time | 28 minutes | |
| Sessions | Once daily for 4 days | |
| The table explains the technical parameters for the dosage of laser energy and treatment time used in this case report. GaAlAs – Gallium Aluminum Arsenide Diode; GaAs – Gallium Arsenide Diode. The two diodes are part of a single laser system, the Multiwave Locked System (MLS). For patients with dark skin color, there is a pigment adjustment selection button on the laser console. When the pigment selection is activated, laser intensity is reduced by 50% and the software automatically recalculates the required dose. | ||