Table 1.
Summary of Treatment Parameters and Pain Scores at Each Treatment Visit
| Parameter | Tx1 | Tx2 | Tx3 | Tx4 |
|---|---|---|---|---|
| Treatment | ||||
| Mean fluence (J/cm2) (range) | 1.4 (1.2–1.6) | 2.6 (1.1–3.0) | 3.0 (2.0–3.1) | 2.0 (2.0–2.0) |
| Spot size range (mm) | 3 | 2–4 | 2–3 | 3 |
| Tattoos treated | 22 | 22 | 20 | 20 |
| Median No. of pulses (range) | 261 (34–952) | 221 (43–1,149) | 296 (60–1,547) | 364 (68–1,538) |
| Anesthesia/Pain | ||||
| Lidocaine injection, n | 14 | 14 | 13 | 13 |
| Median pain (range) | 0.3 (0–5) | 0.5 (0–3) | 1.0 (0–5) | 0.0 (0–4) |
| LMX, n | 3 | 3 | 3 | 3 |
| Median pain (range) | 1.0 (1–1) | 3.0 (3–3) | 4.0 (4–4) | 3.0 (3–3) |
| None, n | 5 | 5 | 4 | 4 |
| Median pain (range) | 6.0 (5–7) | 6.5 (6–7) | 7.0 (6–7) | 6.0 (5–7) |