Table 2. Patient characteristics.
| Patient ID | A | B | C | D |
|---|---|---|---|---|
|
| ||||
| Gender (M/F) | M | F | M | M |
|
| ||||
| Age (years) | 57 | 53 | 72 | 65 |
|
| ||||
| Stenosis grade | Class 6* | Class 4 | Class 4 | Class 4 |
|
| ||||
| Doppler-indicated systolic velocity (cm/s) | 402 | 295 | 458 | 455 |
|
| ||||
| Doppler-indicated diastolic velocity (cm/s) | 54 | 115 | 138 | 143 |
|
| ||||
| Arterial location of Doppler measurement | LCCA-Mid | RICA-Prox. | RICA-Prox. | LICA-Prox. |
|
| ||||
| Symptomatic | Y | Y | N | N |
| Amaurosis fugax | N | Y | - | - |
| TIA | Y | Y | - | - |
| Completed stroke | N | N | - | - |
|
| ||||
| ARFI focal depth (cm) | 3.0 | 2.6 | 2.3 | 2.0 |
|
| ||||
| Peripheral vascular disease | N | Y | N | N |
|
| ||||
| Diabetes mellitus | Y | Y | N | N |
|
| ||||
| Hyperlipidemia | Y | Y | Y | Y |
|
| ||||
| Hypertension | Y | Y | Y | Y |
|
| ||||
| Smoking history | Y | Y | Y | Y |
*
Due to stenosis in CCA, sonographer noted that velocities in ICA may underestimate grade of ICA stenosis.
TIA = transient ischemic attack
ARFI = acoustic radiation force impulse
RICA = right internal carotid artery
LICA = left internal carotid artery
LCCA = left common carotid artery