In the hemodynamic intracranial stenosis the main echocolor Doppler findings are: local flow acceleration, disturbed flow with spectral broadening in the region of the stenosis and reduced maximum and mean flow velocities distal to the stenosis.
Transcranial color Doppler (TCCD) is useful for ruling out intracranial stenosis but less reliable for ruling in this pathology, therefore, TCCD should ideally be used as the initial screening tool.
Intracranial atherosclerotic stenosis is a dynamic lesion: such dynamicity is the result of various processes, including superimposed thrombus formation, intraplaque hemorrhage and increase in atherosclerotic growth. These dynamic processes imply a need for surveillance with a non-invasive technique: the possibility of studying and monitoring the intracranial vessels using TCCD in real time is important for diagnosis, prognosis and therapy.
In this lesson the echocolor-Doppler findings of the intracranial stenosis will be presented.
Franco Accorsi, MD
Member of the Order of Physician of Bologna n° 6728
I am a specialist in Medical Angiology and I am based in Bologna, Italy. Until 2008 (voluntary resignation) I worked at Maggiore Hospital in Bologna as "Dirigente Medico" in the Department of Internal Medicine and as Angiologist in the Angiology Unit with a position of "Alta Professionalità" in "Vascular Ecography and Angiology".
I am currently working in Bologna as an independent professional in the areas of angiology and vascular diagnostics.
I have been a speaker at national and international courses/congress and I have taught duplex ultrasound method in GIUV and SIUMB courses at the Maggiore Hospital, Bologna and courses of echocolor Doppler of extracranial and intracranial arteries at the Stroke Unit of S. Maria Nuova Hospital, Reggio Emilia.