Table 2.
Contrast values for the right CCA, left CCA, and transverse sinus, and BG values
| Patient no. | CM concentration (%) | Right CCA | Left CCA | Transverse sinus | BG value |
|---|---|---|---|---|---|
| 1 | 28 | 3083 | 3134 | 2921 | 3201 |
| 2 | 28 | 3072 | 3091 | 2973 | 3203 |
| 3 | 24 | 3145 | 3190 | 2861 | 3212 |
| 4 | 24 | 3191 | 3214 | 3187 | 3283 |
| 5 | 20 | 3079 | 3113 | 3011 | 3217 |
| 6 | 20 | 2968 | 3027 | 3000 | 3167 |
| 7 | 16 | 3153 | 3141 | 3047 | 3213 |
| 8 | 16 | 3039 | 3056 | 3121 | 3200 |
| 9 | 12 | 3077 | 3087 | – | 3184 |
| 10 | 12 | 3128 | 3162 | 3151 | 3214 |
Abbreviations: CCA, common carotid artery; CM, contrast medium; BG, background; 2D-DSA, two-dimensional digital subtraction angiography.
The values shown in this table were relatively high compared with those of two-dimensional digital subtraction angiography images.
It was difficult to obtain values for the transverse sinus lesion in patient 9.