Transcranial Doppler sonography. Part 2. Evaluation of intracranial and extracranial abnormalities and procedural monitoring.

Lupetin, A R; Davis, D A; Beckman, Irwin; Dash, Nilima

doi:10.1148/radiographics.15.1.7899597

Cited by 26 publications

(8 citation statements)

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“…The effectiveness of TCD in clinical use has been documented in a wide range of diseases like subarachnoid hemorrhage and vasospasm, arterial stenosis and occlusion, head injury, brain death, and arteriovenous malformations (Lupetin et al 1995b). However, as several factors like age, gender, hematocrit, partial pressure of carbon dioxide, partial pressure of oxygen, cardiac output, blood viscosity, turbulence, cerebral metabolism, and degree of brain activation may affect the normal reference values of cerebral hemodynamic parameters (Tong and Albers 1999), standard reference values are needed for precise interpretation of the results.…”

Section: Discussionmentioning

confidence: 99%

Normal Blood Flow Velocities of Basal Cerebral Arteries Decrease with Advancing Age: A Transcranial Doppler Sonography Study

Demirkaya

Uluç

Bek

et al. 2008

Tohoku J. Exp. Med.

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Transcranial Doppler sonography (TCD) is a non-invasive diagnostic tool enabling evaluation of blood fl ow characteristics of basal intracerebral vessels via thin calvarian regions. Several factors may affect the normal values of cerebral hemodynamic parameters, and standard reference values for each laboratory are needed for precise interpretation of the results. The aims of this study were to determine normal values of fl ow velocities of basal cerebral arteries of our TCD laboratory, and to study the infl uence of age and gender on normal values. We studied 63 healthy volunteers (30 male and 33 females; age range, 5 -69 years old) with TCD with a 2-MHz transcranial probe. The subjects were divided into 7 age groups: 5-10 years, 11-20 years, 21-30 years, 31-40 years, 41-50 years, 51-60 years and > 60 years. Mean velocity (V mean), peak systolic velocity (PSV), and end-diastolic velocities (EDV) were determined in middle, anterior and posterior cerebral arteries. No signifi cant gender difference was found. However, there was a decrease in blood fl ow velocities in all vessels with advancing age, which was signifi cant when subjects older than 40 years and 40 years old were compared. V mean, PSV and EDV values were highest in the age group of 5 -10 years old and lowest in volunteers older than the age of 60 ( p < 0.05). As a conclusion, fl ow velocities in basal cerebral arteries range widely and are signifi cantly age-related. Age matching of TCD data is a requirement for clinically relevant conclusions.transcranial Doppler sonography; basal; cerebral arteries; normal values; healthy subjects. Tohoku

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Section: Discussionmentioning

confidence: 99%

Normal Blood Flow Velocities of Basal Cerebral Arteries Decrease with Advancing Age: A Transcranial Doppler Sonography Study

Demirkaya

Uluç

Bek

et al. 2008

Tohoku J. Exp. Med.

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“…Intracranial and extracranial vascular malformations and other vascular anomalies of the head and neck are assessed with ultrasonography and color Doppler imaging. [13][14][15][16] Palatal tumors and tongue and floor of the mouth carcinoma are investigated with intraoral ultrasonography before and during surgery, with evaluation of the tumor extension. [17][18][19][20] Currently, practitioners use clinical and histopathologic examination to diagnose a caliber-persistent labial artery (CPLA).…”

mentioning

confidence: 99%

Ultrasonography: A Noninvasive Tool to Diagnose a Caliber-Persistent Labial Artery, an Enlarged Artery of the Lip

Vazquez

Lombardi

Guinand-Mkinsi³

et al. 2005

Journal of Ultrasound in Medicine

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Ultrasonography and color Doppler imaging may be useful noninvasive tools for the diagnosis and preoperative evaluation, as well as the follow-up, of labial lesions related to a CPLA, thus eliminating the need for diagnostic surgery in typical pulsatile nodules. Ultrasonography may help distinguish a CPLA from other vascular lesions of the lip such as an aneurysm. Atypical cases or chronic ulcerations mimicking a cancer should undergo biopsy so that a malignant process is not missed.

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“…Wechsler et al [34], Harders et al [11], Sekhar et al [28], Lindegaard et al [18,19], Grosset et al [8], Miller et al [21], Mizuno et aI. [22], Lupetin et al [20] reported that TCD provides reliable information about the status of the intracranial arteries following SAH. On the contrary, Symon et al [33] reported on a notable lack of correlation between flow velocity and clinical grade, and Laumer et al [16] found a discrepancy among these 2 parameters.…”

Section: Discussionmentioning

confidence: 99%

A new, more dependable methodology for the use of transcranial Doppler ultrasonography in the management of subarachnoid haemorrhage

et al. 1996

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The role of transcranial Doppler ultrasound (TCD) in clinical decision making about vasospasm due to subarachnoid haemorrhage (SAH), shows a great variation according to neurosurgical clinics. In this prospective study, a total of 143 patients, admitted to Marmara University Department of Neurosurgery between January 1991 to March 1995 and treated surgically with the diagnosis of aneurysmal SAH, were examined by TCD. Eighty of these patients fulfilled the requirements for inclusion. In order to increase clinical dependability of TCD, a new grading system is proposed and tested in comparison with the one previously used, which takes absolute flow velocities as the main parameter in grading. The new, individually based TCD grading system is proposed to minimize the pitfalls caused by proximal stenosis, wide range of normal Vm values and proximally evolving vasospasm. We concluded that: 1) The new, individually based TCD grading system has a high degree of clinical dependability. 2) Daily TCD examinations supply reliable predictive information about developing delayed ischaemic deficit (DID). If a TCD Gr II patient shows an increase of 35 cm/sec (in 24 hours) in Vm value, his probability of developing DID was found to be 60% (p < 0.05); if a TCD Gr B III patient shows the same rate of increase in Vm, his probability of developing DID was 80% (< 0.05). 3) TCD has an important clinical role in decision making about the management of SAH patients. 4) Surgical manipulation causes a reversible increase of one or two TCD-grades in the early postoperative days.

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Transcranial Doppler sonography. Part 2. Evaluation of intracranial and extracranial abnormalities and procedural monitoring.

Cited by 26 publications

References 0 publications

Normal Blood Flow Velocities of Basal Cerebral Arteries Decrease with Advancing Age: A Transcranial Doppler Sonography Study

Normal Blood Flow Velocities of Basal Cerebral Arteries Decrease with Advancing Age: A Transcranial Doppler Sonography Study

Ultrasonography: A Noninvasive Tool to Diagnose a Caliber-Persistent Labial Artery, an Enlarged Artery of the Lip

A new, more dependable methodology for the use of transcranial Doppler ultrasonography in the management of subarachnoid haemorrhage

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