Table 2.
Patient data and results of image quality, diagnostic confidence and radiation dose of spiral and sequential CTA (n = 20).
| PT # | Gender | Protocol: 1 = SPIR, 2 = SEQ | BMI | HR Prior to acquisition | MG Metoprolol | Nitrate (Y/N) | HR During acquisition | Best ECG phase | Overall image quality 1–5 (1 = Poor, 5 = Excellent) | Artefact type | DG Confidence 1–5 (1 = Poor 5 = Excellent) | DLP (mGy*cm) | Calc.Eff.Dose (MsV) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | F | 1 | 20·4 | 63 | 25 | Y | 61 | 80 | 4 | STAIR | 5 | 866 | 14·7 |
| 2 | F | 1 | 22·4 | 80 | 25 | Y | 55 | 80 | 5 | NONE | 5 | 1064 | 18·1 |
| 3 | F | 1 | 25·7 | 65 | 10 | Y | 50 | 75 | 5 | NONE | 5 | 1076 | 18·3 |
| 4 | F | 1 | 28·3 | 64 | 10 | Y | 67 | 80LCA 40RCA | 3 | MOTION | 4 | 1074 | 18·3 |
| 5 | M | 1 | 32·1 | 58 | 5 | Y | 63 | 80 | 3 | NOISE | 4 | 1369 | 23·3 |
| 6 | F | 1 | 43·0 | 75 | 20 | Y | 98 | 40 | 1 | NOISE | 2 | 1538 | 26·1 |
| 7 | F | 1 | 24·5 | 86 | 30 | Y | 77 | 40 | 3 | MOTION | 3 | 1053 | 17·9 |
| 8 | F | 1 | 20·4 | 59 | 5 | Y | 55 | 75 | 5 | NONE | 5 | 1005 | 17·1 |
| 9 | F | 1 | 28·7 | 64 | 15 | Y | 55 | 75 | 3 | NOISE, STAIR | 3 | 1364 | 23·2 |
| 10 | M | 1 | 23·7 | 78 | 25 | Y | 64 | 70LCA40RCA | 4 | NOISE | 4 | 961 | 16·3 |
| Mean ± SD | 26·9 ± 6·8 | 69·2 ± 9·7 | 17 ± 9·2 | 64·5 ± 14·1 | 3·6 ± 1·3 | 4·0 ± 1·1 | 1137 ± 213 | 19·3 ± 3·6 | |||||
| 11 | M | 2 | 27·6 | 68 | 15 | N | 61 | 75 | 4 | NOISE | 4 | 470 | 8·0 |
| 12 | F | 2 | 20·9 | 75 | 25 | Y | 61 | 75 | 4 | STAIR | 5 | 437 | 7·4 |
| 13 | F | 2 | 32·0 | 68 | 20 | Y | 61 | 75 | 3 | NOISE | 4 | 371 | 6·3 |
| 14 | F | 2 | 39·2 | 50 | 0 | N | 62 | 75 | 3 | NOISE | 4 | 495 | 8·4 |
| 15 | M | 2 | 26·9 | 50 | 0 | Y | 51 | 80 | 4 | NONE | 4 | 494 | 8·4 |
| 16 | M | 2 | 30·1 | 52 | 0 | Y | 52 | 75 | 4 | STAIR | 5 | 465 | 7·9 |
| 17 | M | 2 | 24·8 | 48 | 0 | Y | 44 | 80 | 5 | NONE | 5 | 491 | 8·3 |
| 18 | F | 2 | 24·1 | 64 | 15 | Y | 60 | 75 | 5 | NONE | 5 | 436 | 7·4 |
| 19 | M | 2 | 30·3 | 74 | 15 | Y | 56 | 75 | 2 | NOISE, MOTION | 3 | 472 | 8·0 |
| 20 | M | 2 | 31·1 | 73 | 30 | Y | 58 | 75 | 3 | NOISE | 4 | 366 | 6·2 |
| Mean ± SD | 28·7 ± 5·1 | 62·2 ± 11·0 | 12·0 ± 11·4 | 56·6 ± 5·9 | 3·7 ± 0·9 | 4·3 ± 0·7 | 450 ± 48 | 7·6 ± 0·8 |