scholarly journals Abnormal Blood Flow on Transcranial Duplex Sonography Predicts Poor Outcome After Stroke Thrombectomy

Stroke ◽  
2018 ◽  
Vol 49 (11) ◽  
pp. 2780-2782 ◽  
Author(s):  
Markus Kneihsl ◽  
Kurt Niederkorn ◽  
Hannes Deutschmann ◽  
Christian Enzinger ◽  
Birgit Poltrum ◽  
...  
Keyword(s):  
Blood Flow ◽  
Duplex Sonography ◽  
Poor Outcome ◽  
Transcranial Duplex Sonography

Duplex Sonography of Normal Renal Allografts

1989 ◽  
Vol 30 (1) ◽  
pp. 53-56 ◽  
Author(s):  
B. Schwaighofer ◽  
F. Kainberger ◽  
F. Fruehwald ◽  
P. Huebsch ◽  
N. Gritzmann ◽  
...  
Keyword(s):  
Blood Flow ◽  
Resistive Index ◽  
Duplex Sonography ◽  
Invasive Technique ◽  
Flow Measurements ◽  
Renal Allografts ◽  
Significant Difference ◽  
Main Renal Artery ◽  
Long Term Follow Up ◽  
Blood Flow Measurements

Thirty-five patients with normal renal allografts as well as 10 healthy volunteers with normal native kidneys were examined by duplex sonography. Blood flow measurements were performed in the main renal artery as well as in segmental, interlobar and arcuate arteries. In both groups the normal range of variation in blood flow was defined by using the resistive index (RI). Doppler wave forms and RI of main renal arteries were both similar to those of their branches. In renal allografts as well as in native kidneys the blood flow pattern showed a rapid up-slope in systole followed by a gradual down-slope in early diastole, with a persistent flow throughout diastole. In addition, there was no significant difference in the RI between allografted and native kidneys. The interobserver variability was less than 10 per cent. The mean RI was 0.68 using all data points. Vascular rejection in 11 patients could be discriminated significantly (p<0.001). Duplex sonography is useful in evaluating renal blood flow. This simple and non-invasive technique seems to be useful in long-term follow-up of renal allograft recipients.

Cerebral Blood Flow Volume in Posterior Circulation Ischemic Disorders

2021 ◽  
pp. 154431672110539
Author(s):  
Anastasiya Yu. Vishnyakova ◽  
Nataliya M. Medvedeva ◽  
Alexander B. Berdalin ◽  
Svetlana E. Lelyuk ◽  
Vladimir G. Lelyuk
Keyword(s):  
Blood Flow ◽  
Healthy Volunteers ◽  
Internal Carotid ◽  
Duplex Sonography ◽  
Posterior Circulation ◽  
Control Group ◽  
Vertebrobasilar Insufficiency ◽  
Flow Volume ◽  
Blood Flow Volume ◽  
Vertebral Arteries

Objective: The aim of this study was to determine blood flow volume (BFV) in the normal state and its features in patients with acute posterior circulation ischemic strokes (PCIS) and vertebrobasilar insufficiency (VBI) using color duplex sonography (DS).Methods: The study included DS data from 96 patients with verified PCIS (66 men and 30 women, aged 64±13 years) and 29 adults with VBI (17 men and 12 women, aged 66±11 years). The control group consisted of 65 healthy male volunteers of different ages.Results: In asymptomatic healthy volunteers, there was a significant decrease in BFV in the internal carotid artery (ICA) with age (502 ml/min in young people, 465 ml/min in the older subgroup) with rS = −0.24 ( p = 0.05), and the aggregated BFV in the vertebral arteries (VAs) turned out to be almost constant (141–143 ml/min). In patients with VBI, the aggregated BFV in the VAs (144 ml/min) did not differ from that in healthy volunteers, but the BFV values in the ICAs were significantly lower (325 ml/min). In patients with PCIS, the aggregated BFV in the ICAs was also significantly lower (399 ml/min) than in the control group but did not significantly differ from that in patients with VBI. In patients with PCIS, there was a significant decrease in the aggregated BFV in the VAs (105 ml/min), which distinguished this group from other examined patients.Conclusions: A significant decrease the BFV in the VA was observed only in patients with PCIS and was associated with the presence of steno-occlusive diseases (SOD) more often in the left VA. Patients with VBI had the most pronounced decrease in BFV in the ICA.

Measurement of Blood Flow in an Intracranial Artery Bypass From the Internal Maxillary Artery by Intraoperative Duplex Sonography

2016 ◽  
Vol 36 (2) ◽  
pp. 439-447 ◽  
Author(s):  
Zaitao Yu ◽  
Xiang'en Shi ◽  
Shams Raza Brohi ◽  
Hai Qian ◽  
Fangjun Liu ◽  
...  
Keyword(s):  
Blood Flow ◽  
Artery Bypass ◽  
Duplex Sonography ◽  
Maxillary Artery ◽  
Intracranial Artery ◽  
Internal Maxillary Artery

The case of posterior ischemic optic neuropathy in patient with multiple sclerosis

2021 ◽  
pp. 107-110
Author(s):  
T.N. Kiseleva ◽  
◽  
E.K. Eliseeva ◽  
M.N. Zakharova ◽  
◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Blood Flow ◽  
Optic Neuropathy ◽  
Internal Carotid ◽  
Duplex Sonography ◽  
Ischemic Optic Neuropathy ◽  
Color Duplex Sonography ◽  
Retrobulbar Neuritis ◽  
Posterior Ischemic Optic Neuropathy ◽  
Brachiocephalic Arteries

A case of posterior ischemic optic neuropathy (PION) in a 41-year-woman with 19 years remission of multiple sclerosisis presented.She had complaints of acute unilateral loss of vision and underwent complex clinical and instrumental examination including B-scan of orbit, color duplex sonography (CDS) of orbital vessels and brachiocephalic arteries, magnetic resonance imaging (MRI). The significant stenosis of internal carotid artery due to its dissection was detected on the affected eye side. The results of ultrasound examinations and MRI excluded demyelinative retrobulbar neuritis (RBN) and determined the signs of blood flow impairment in vessels of orbital part of the optic nerve. Differential diagnostics of PION and RBN required the investigations of blood flow in orbital vessels and brachiocephalic arteries. Key words: posterior ischemic optic neuropathy, multiple sclerosis, retrobulbar neuritis, color duplex sonography, internal carotid artery.

Estimation of antithyroid drug dose in Graves’ disease: value of quantification of thyroid blood flow with color duplex sonography

2001 ◽  
Vol 27 (8) ◽  
pp. 1137-1141 ◽  
Author(s):  
Andreas Saleh ◽  
Günter Fürst ◽  
Joachim Feldkamp ◽  
Erhard Godehardt ◽  
Andreas Grust ◽  
...  
Keyword(s):  
Blood Flow ◽  
Antithyroid Drug ◽  
Duplex Sonography ◽  
Drug Dose ◽  
Graves Disease ◽  
Color Duplex Sonography

Contrast-Enhanced Transcranial Duplex Sonography

BMUS Bulletin ◽  
1995 ◽  
Vol 3 (1) ◽  
pp. 26-29 ◽  
Author(s):  
Albrecht Bauer ◽  
Georg Becker ◽  
Piotr Jachimczak ◽  
Andreas Krone ◽  
Ulrich Bogdahn
Keyword(s):  
Duplex Sonography ◽  
Contrast Enhanced ◽  
Transcranial Duplex Sonography

Effects of sildenafil on major arterial blood flow using duplex sonography

2005 ◽  
Vol 33 (4) ◽  
pp. 173-175 ◽  
Author(s):  
Ercan Kocakoc ◽  
Arslan Ardicoglu ◽  
Zulkif Bozgeyik ◽  
Adem Kiris ◽  
Veysel Yuzgec ◽  
...  
Keyword(s):  
Blood Flow ◽  
Duplex Sonography ◽  
Arterial Blood Flow ◽  
Arterial Blood
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