Transcranial Doppler Findings in Acute Spontaneous Recanalization of Middle Cerebral Artery Embolism

1991 ◽  
Vol 1 (2) ◽  
pp. 63-67 ◽  
Author(s):  
Camllo R. Gomez ◽  
Stephen K. Burger ◽  
Robert R. Smith ◽  
Alexandros Powers ◽  
Michael Graeber
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Transcranial Doppler ◽  
Artery Embolism

scholarly journals Middle cerebral artery embolism and unilateral visual loss after autologous fat injection into the glabellar area.

Stroke ◽  
1993 ◽  
Vol 24 (4) ◽  
pp. 615-616 ◽  
Author(s):  
J A Egido ◽  
R Arroyo ◽  
A Marcos ◽  
I Jiménez-Alfaro
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Visual Loss ◽  
Fat Injection ◽  
Autologous Fat ◽  
Artery Embolism

scholarly journals Transcranial duplex ultrasound monitoring of intracranial arterial stenosis treated with ELUTAX “3” drug-eluting balloon

2020 ◽  
Vol 26 (6) ◽  
pp. 800-804
Author(s):  
Elena Elvira Soler ◽  
Blanca Serrano Serrano ◽  
Nicolás López Hernández ◽  
Natasha Guevara Dalrymple ◽  
Sarai Moliner Castellano ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Transcranial Doppler ◽  
Arterial Stenosis ◽  
Transcranial Ultrasound ◽  
Mean Flow ◽  
Intracranial Arterial Stenosis ◽  
Ultrasound Monitoring ◽  
Drug Eluting ◽  
Drug Eluting Balloon

We report the results of transcranial ultrasound monitoring in three patients with intracranial arterial stenosis of the middle cerebral artery treated with the only drug-eluting balloon certificated for intracranial use in highly symptomatic intracranial arterial stenosis, ELUTAX “3” (AR Baltic Medical). We performed transcranial Doppler ultrasounds 24 h, 72 h, 10 days, 15 days and 30 days after the angioplasty, thereby measuring mean flow velocity (MFV) in the maximum stenosis area in patients with symptomatic steno-occlusive disease of the middle cerebral artery treated with ELUTAX “3”. Two patients were treated during mechanical thrombectomy (MT) due to acute ischemic stroke and one patient was treated on elective basis due to symptomatic pre-occlusive stenosis, with recurrent transient ischemic attacks (TIAs) refractory to medical therapy. In Case 1, the first transcranial Doppler ultrasounds evidenced MFV of 348 cm/s, with progressive MFV reduction until 15 days post-treatment, with MFV of 177 cm/s. In Case 2, 24 h after angioplasty had an MFV of 258 cm/s, decreasing to 103 cm/s at 30 days. Case 3 had an MFV of 436 cm/s before angioplasty that immediately decreased after the procedure to 364 cm/s, with a final MFV of 260 cm/s at 30 days. We have recorded a progressive MFV reduction in intracranial arterial stenosis, with better outcomes in patients treated during MT. In our experience, the use of ELUTAX “3” for the treatment of symptomatic intracranial arterial stenosis achieves a progressive improvement of stenosis, evident in the first weeks, to a higher extent in cases of occlusive thrombosis. More studies are needed to provide more information about this device.

scholarly journals Transcranial Doppler Enhanced Thrombolysis for Embolic Occlusion of Major Cerebral Arteries

2003 ◽  
Vol 9 (1_suppl) ◽  
pp. 129-132
Author(s):  
T. Yamanome ◽  
M. Sasoh ◽  
Y. Kubo ◽  
Y. Nishikawa ◽  
H. Endoh ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Basilar Artery ◽  
Transcranial Doppler ◽  
Cerebral Arteries ◽  
Ultrasound Irradiation ◽  
Haemorrhagic Transformation ◽  
Good Outcome

For the treatment of 11 patients with hyperacute embolic occlusion of major cerebral arteries (ten with occlusion of middle cerebral artery and one with occlusion of basilar artery), TCD-enhanced thrombolysis (TCDET) was performed in combination with ultrasound irradiation, using diagnostic transcranial Doppler (TCD) (TC2-64B: 2MHz, 100mW/cm2, pulsed wave) (TCDET group), and the effectiveness of this procedure was compared with that of local intra-arterial fibrinolysis (LIF) in 45 patients with embolic occlusion of the middle cerebral artery (LIF group). Regarding dose of TPA, the LIF group used 1046.7 ± 607.8 units and the TCDET group 700.0 ± 431.3 units (p < 0.05). Regarding time technically required to attain recanalization, the LIF group required 68.2 minutes, and the TCDET group 28.6 minutes. A good outcome was noted in 60.8% of the LIF group and 64% of the TCDET group. Haemorrhagic transformation was observed in 7.8% of the LIF group and in 0% of the TCDET group. No complications due to TCD irradiation were observed in the TCDET group. These findings suggest that TCDET can be an effective method of achieving recanalization.

Experimental and biological variation of three-dimensional transcranial Doppler measurements

1993 ◽  
Vol 75 (6) ◽  
pp. 2805-2810 ◽  
Author(s):  
L. L. Thomsen ◽  
H. K. Iversen
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Transcranial Doppler ◽  
Coefficient Of Variation ◽  
Cerebral Arteries ◽  
Three Dimensional ◽  
Low Frequency ◽  
Control Groups ◽  
Mean Velocity ◽  
Low Frequency Oscillations

A new transcranial Doppler system (3-D Transscan, Eden Medizinische Elektronik) was evaluated in relation to sex, age, intersubject, interobserver, side-to-side, and day-to-day variation. Fifty-eight healthy volunteers participated (aged 18–80 yr). Mean velocity was higher in females than in males and decreased with age. The coefficient of variation in the middle cerebral artery was 26% between subjects, 20% between sides, 16% between days, 13% between observers, and 7% during 5 min. The coefficient of variation was higher in the anterior and posterior cerebral arteries. Bruits were heard in 35 subjects, 24 females and 11 males (P = 0.002). When middle cerebral artery velocity was monitored, high- and low-frequency oscillations were found, with a mean frequency of 5 and 1.6/min, respectively. These variations underline the necessity of standardized conditions and very carefully matched control groups in studies using transcranial Doppler. This is especially important when expected changes are small and easy to overlook, as in studies of normal physiological responses and migraine.

Sign in / Sign up

Export Citation Format

Share Document