2.4.6 – Quiz: Vertebral Artery Pathology

The diagnosis of a vertebral artery stenosis:

Subclavian steal syndrome (SSS):

Vertebral stenosis is measured as:

Subclavian steal syndrome (SSS):

The severity of the SSS varies with:

A 50-74% stenosis in the vertebral artery is defined by a ratio criteria:

Subclavian steal syndrome is:

At colour Doppler normally the vertebral artery has:

Pre-steal subclavian syndrome:

The incomplete steal syndrome:

To determine if the cause of  ‘to and fro’ flow in the vertebral artery is due to partial subclavian steal syndrome patient should undergo:

A 50% stenosis in the vertebral artery is defined by a ratio criteria: