Clinical applications of transcranial Doppler sonography

Reviews on Recent Clinical Trials

Volumn 2, Issue 1, 2007, Pages 49-57

  Schatlo, Bawarjan ^a   Pluta, Ryszard M ^a  

^a NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE   (United States)

Author keywords

Autoregulation; Cerebral blood flow; Cerebrovascular disease; Chemoregulation; Stroke; Transcranial Doppler sonography

Indexed keywords

ECHO CONTRAST MEDIUM; FIBRINOLYTIC AGENT; NIMODIPINE; TISSUE PLASMINOGEN ACTIVATOR;

ARTERIOVENOUS MALFORMATION; BLOOD FLOW VELOCITY; BRAIN ANGIOGRAPHY; BRAIN ATHEROSCLEROSIS; BRAIN BLOOD FLOW; BRAIN CIRCULATION; BRAIN DEATH; BRAIN VASOSPASM; CAROTID ARTERY DISEASE; CAROTID ENDARTERECTOMY; CEREBRAL SINUS THROMBOSIS; CEREBROVASCULAR ACCIDENT; CEREBROVASCULAR DISEASE; CLINICAL TRIAL; CORONARY ARTERY BYPASS SURGERY; DIAGNOSTIC ACCURACY; DIAGNOSTIC VALUE; DOPPLER ECHOGRAPHY; HEART SEPTUM DEFECT; HEMODILUTION; HUMAN; HYPERTENSION; HYPERVOLEMIA; INTRACRANIAL PRESSURE; MAGNETIC RESONANCE ANGIOGRAPHY; MICROEMBOLISM; MIDDLE CEREBRAL ARTERY OCCLUSION; NUCLEAR MAGNETIC RESONANCE IMAGING; OCCLUSIVE CEREBROVASCULAR DISEASE; PEROPERATIVE ECHOGRAPHY; PREECLAMPSIA; PRIORITY JOURNAL; RESTLESS LEGS SYNDROME; REVIEW; SICKLE CELL ANEMIA; SUBARACHNOID HEMORRHAGE; TRANSESOPHAGEAL ECHOCARDIOGRAPHY; TRAUMATIC BRAIN INJURY;

BRAIN; CONTRAST MEDIA; CRANIOCEREBRAL TRAUMA; FEMALE; HUMANS; PRE-ECLAMPSIA; PREGNANCY; ULTRASONOGRAPHY, DOPPLER, TRANSCRANIAL; VASCULAR DISEASES;

EID: 34248141842     PISSN: 15748871     EISSN: None     Source Type: Journal    
DOI: 10.2174/157488707779318125     Document Type: Review

References (133)

1. Aaslid R, Markwalder TM, Nornes H. Noninvasive transcranial Doppler ultrasound recording of flow velocity in basal cerebral arteries. J Neurosurg 1982; 57: 769-74.
2. Sloan MA, Alexandrov AV, Tegeler CH, et al. Assessment: transcranial Doppler ultrasonography: report of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology. Neurology 2004; 62: 1468-81.
3. Krejza J, Baumgartner RW. Clinical applications of transcranial color-coded duplex sonography. J Neuroimaging 2004; 14: 215-25.
4. Jahromi AS, Cina CS, Liu Y, Clase CM. Sensitivity and specificity of color duplex ultrasound measurement in the estimation of internal carotid artery stenosis: a systematic review and meta-analysis. J Vasc Surg 2005; 41: 962-72.
5. Marinoni M, Ginanneschi A, Forleo P, Amaducci L. Technical limits in transcranial Doppler recording: inadequate acoustic windows. Ultrasound Mod Biol 1997; 23: 1275-7.
6. Klotzsch C, Popescu O, Berlit P. A new 1-MHz probe for transcranial Doppler sonography in patients with inadequate temporal bone windows. Ultrasound Med Biol 1998; 24: 101-3.
7. DeWitt LD, Wechsler LR. Transcranial Doppler. Stroke 1988; 19: 915-21.
8. Ackerstaff RG, Keunen RW, van Pelt W, Montauban van Swijndregt AD, Stijnen T. Influence of biological factors on changes in mean cerebral blood flow velocity in normal ageing: a transcranial Doppler study. Neurol Res 1990; 12: 187-91.
9. Babikian VL, Wechsler LR. Transcranial Doppler Ultrasonography. 2 ed. Boston, Butterworth-Heinemann. 1999.
10. Bouma GJ, Muizelaar JP. Relationship between cardiac output and cerebral blood flow in patients with intact and with impaired autoregulation. J Neurosurg 1990; 73: 368-74.
11. Giller CA. The frequency-dependent behavior of cerebral autoregulation. Neurosurgery 1990; 27: 362-8.
12. Krejza J, Mariak Z, Lewko J. Standardization of flow velocities with respect to age and sex improves the accuracy of transcranial color Doppler sonography of middle cerebral artery spasm. AJR Am J Roentgenol 2003; 181: 245-52.
13. Markus HS, Harrison MJ. Microembolic signal detection using ultrasound. Stroke 1995; 26: 1517-9.
14. Markus H, Cullinane M, Reid G. Improved automated detection of embolic signals using a novel frequency filtering approach. Stroke 1999; 30: 1610-5.
15. Chung E, Fan L, Degg C, Evans DH. Detection of Doppler embolic signals: psychoacoustic considerations. Ultrasound Med Biol 2005; 31: 1177-84.
16. Chung EM, Fan L, Naylor AR, Evans DH. Characteristics of Doppler embolic signals observed following carotid endarterectomy. Ultrasound Med Biol 2006; 32: 1011-23.
17. Neu P, Heuser I, Bajbouj M. Cerebral blood flow during vagus nerve stimulation - a transcranial Doppler study. Neuropsychobiology 2005; 51: 265-8.
18. Sorteberg W, Lindegaard KF, Rootwelt K, et al. Blood velocity and regional blood flow in defined cerebral artery systems. Acta Neurochir (Wien) 1989; 97: 47-52.
19. Sorteberg W. Cerebral Artery Blood Velocity and Regional Cerebral Clood Flow in Normal Subjects. In: Newell D, Aaslid R, editors. Transcranial Doppler. New York, Raven Press. 1992; 57-66.
20. Kirkham FJ, Padayachee TS, Parsons S, Seargeant LS, House FR, Gosling RG. Transcranial measurement of blood velocities in the basal cerebral arteries using pulsed Doppler ultrasound: velocity as an index of flow. Ultrasound Med Biol 1986; 12: 15-21.
21. Jorgensen LG. Transcranial Doppler ultrasound for cerebral perfusion. Acta Physiol Scand Suppl 1995; 625: 1-44.
22. Larsen FS, Olsen KS, Hansen BA, Paulson OB, Knudsen GM. Transcranial Doppler is valid for determination of the lower limit of cerebral blood flow autoregulation. Stroke 1994; 25: 1985-8.
23. Schreiber SJ, Gottschalk S, Weih M, Villringer A, Valdueza JM. Assessment of blood flow velocity and diameter of the middle cerebral artery during the acetazolamide provocation test by use of transcranial Doppler sonography and MR imaging. AJNR Am J Neuroradiol 2000; 21: 1207-11.
24. Bor-Seng-Shu E, Hirsch R, Teixeira MJ, De Andrade AF, Marino R, Jr. Cerebral hemodynamic changes gauged by transcranial Doppler ultrasonography in patients with posttraumatic brain swelling treated by surgical decompression. J Neurosurg 2006; 104: 93-100.
25. Dahl A, Russell D, Nyberg-Hansen R, Rootwelt K. A comparison of regional cerebral blood flow and middle cerebral artery blood flow velocities: simultaneous measurements in healthy subjects. J Cereb Blood Flow Metab 1992; 12: 1049-54.
26. White H, Venkatesh B. Applications of transcranial Doppler in the ICU: a review. Intensive Care Med 2006; 32: 981-94.
27. Aaslid R. Transcranial Doppler Software (http://www.transcranial.com), last access: 09/20/2006.
28. Gosling RG, King DH. Arterial assessment by Doppler-shift ultrasound. Proc R Soc Med 1974; 67: 447-9.
29. Bellner J, Romner B, Reinstrup P, Kristiansson KA, Ryding E, Brandt L. Transcranial Doppler sonography pulsatility index (PI) reflects intracranial pressure (ICP). Surg Neurol 2004; 62: 45-51 discussion 51.
30. Hoffman WH, Pluta RM, Fisher AQ, Wagner MB, Yanovski JA. Transcranial Doppler ultrasound assessment of intracranial hemodynamics in children with diabetic ketoacidosis. J Clin Ultrasound 1995; 23: 517-23.
31. Lee KY, Sohn YH, Baik JS, Kim GW, Kim JS. Arterial pulsatility as an index of cerebral microangiopathy in diabetes. Stroke 2000; 31: 1111-5.
32. Markus HS, Harrison MJ. Estimation of cerebrovascular reactivity using transcranial Doppler, including the use of breath-holding as the vasodilatory stimulus. Stroke 1992; 23: 668-73.
33. Muller M, Voges M, Piepgras U, Schimrigk K. Assessment of cerebral vasomotor reactivity by transcranial Doppler ultrasound and breath-holding. A comparison with acetazolamide as vasodilatory stimulus. Stroke 1995; 26: 96-100.
34. Soehle M, Czosnyka M, Pickard JD, Kirkpatrick PJ. Continuous assessment of cerebral autoregulation in subarachnoid hemorrhage. Anesth Analg 2004; 98: 1133-9, table of contents.
35. Giller CA, Iacopino DG. Use of middle cerebral velocity and blood pressure for the analysis of cerebral autoregulation at various frequencies: the coherence index. Neurol Res 1997; 19: 634-40.
36. Widder B, Paulat K, Hackspacher J, Mayr E. Transcranial Doppler CO2 test for the detection of hemodynamically critical carotid artery stenoses and occlusions. Eur Arch Psychiatry Neurol Sci 1986; 236: 162-8.
37. Aaslid R. Cerebral Autoregulation and Vasomotor Reactivity. In: Baumgartner RW, editor. Handbook on Neurovascular Ultrasound Front Neurol Neurosci Basel 2006; 216-28.
38. Giller CA, Hatab MR, Gillet AM. Estimation of vessel flow and diameter during cerebral vasospasm using transcranial Doppler indices. Neurosurgery 1998; 42: 1076-81 discussion 81-2.
39. Schreiber SJ, Kauert A, Doepp F, Valdueza JM. Measurement of global cerebral circulation time using power duplex echo-contrast bolus tracking. Cerebrovasc Dis 2003; 15: 129-32.
40. Schreiber SJ, Franke U, Doepp F, Staccioli E, Uludag K, Valdueza JM. Dopplersonographic measurement of global cerebral circulation time using echo contrast-enbanced ultrasound in normal individuals and patients with arteriovenous malformations. Ultrasound Med Biol 2002; 28: 453-8.
41. Schreiber SJ, Diehl RR, Weber W, et al. Doppler sonographic evaluation of shunts in patients with dural arteriovenous fistulas. AJNR Am J Neuroradiol 2004; 25: 775-80.
42. Schreiber SJ, Doepp F, Spruth E, Kopp UA, Valdueza JM. Ultrasonographic measurement of cerebral blood flow, cerebral circulation time and cerebral blood volume in vascular and Alzheimer's dementia. J Neurol 2005; 252: 1171-7.
43. Jakobsen M, Enevoldsen E, Dalager T. Spasm index in subarachnoid haemorrhage: consequences of vasospasm upon cerebral blood flow and oxygen extraction. Acta Neurol Scand 1990; 82: 311-20.
44. Zanette EM, Fieschi C, Bozzao L, et al. Comparison of cerebral angiography and transcranial Doppler sonography in acute stroke. Stroke 1989; 20: 899-903.
45. Akopov S, Whitman GT. Hemodynamic studies in early ischemic stroke: serial transcranial Doppler and magnetic resonance angiography evaluation. Stroke 2002; 33: 1274-9.
46. Crutchfield KE, Razumovsky AY, Tegeler CH, Mozayeni BR. Differentiating vascular pathophysiological states by objective analysis of flow dynamics. J Neuroimaging 2004; 14: 97-107.
47. Kassell NF, Torner JC, Haley EC, Jr., Jane JA, Adams HP, Kongable GL. The International Cooperative Study on the Timing of Aneurysm Surgery. Part 1: Overall management results. J Neurosurg 1990; 73: 18-36.
48. Vora YY, Suarez-Almazor M, Steinke DE, Martin ML, Findlay JM. Role of transcranial Doppler monitoring in the diagnosis of cerebral vasospasm after subarachnoid hemorrhage. Neurosurgery 1999; 44: 1237-47 discussion 47-8.
49. Lysakowski C, Walder B, Constanza MC, Tramer MR. Transcranial Doppler Versus Angiography in Patients With Vasospasm due to a Ruptured Cerebral Aneurysm: A Systematic Review. Stroke 2001; 32: 2292-8.
50. Aaslid R. Transcranial Doppler assessment of cerebral vasospasm. Eur J Ultrasound 2002; 16: 3 -10.
51. Lindegaard KF, Nornes H, Bakke SJ, Sorteberg W, Nakstad P. Cerebral vasospasm after subarachnoid haemorrhage investigated by means of transcranial Doppler ultrasound. Acta Neurochir Suppl (Wien) 1988; 42: 81-4.
52. Wozniak MA, Sloan MA, Rothman MI, et al. Detection of vasospasm by transcranial Doppler sonography. The challenges of the anterior and posterior cerebral arteries. J Neuroimaging 1996; 6: 87-93.
53. Chieregato A, Sabia G, Tanfani A, Compagnone C, Tagliaferri F, Targa L. Xenon-CT and transcranial. Doppler in poor-grade or complicated aneurysmatic subarachnoid hemorrhage patients undergoing aggressive management of intracranial hypertension. Intensive Care Med 2006; 32: 1143-50.
54. Soustiel JF, Shik V, Shreiber R, Tavor Y, Goldsher D. Basilar vasospasm diagnosis: investigation of a modified "Lindegaard Index" based on imaging studies and blood velocity measurements of the basilar artery. Stroke 2002; 33: 72-7.
55. Sviri GE, Britz GW, Douville CM, Lam A, Newell DW. Transcranial Doppler grading criteria for basilar artery vasospasm. 9th international conference on cerebral vasospasm; 2006; Istanbul; 2006.
56. Sviri GE, Lewis DH, Correa R, Britz GW, Douville CM, Newell DW. Basilar artery vasospasm and delayed posterior circulation ischemia after aneurysmal subarachnoid hemorrhage. Stroke 2004; 35: 1867-72.
57. Voldby B, Enevoldsen EM, Jensen FT. Cerebrovascular reactivity in patients with ruptured intracranial aneurysms. J Neurosurg 1985; 62: 59-67.
58. Frontera JA, Rundek T, Schmidt JM, et al. Cerebrovascular reactivity and vasospasm after subarachnoid hemorrhage: a pilot study. Neurology 2006; 66: 727-9.
59. Jarus-Dziedzic K, Juniewicz H, Wronski J, et al. The relation between cerebral blood flow velocities as measured by TCD and the incidence of delayed ischemic deficits. A prospective study after subarachnoid hemorrhage. Neurol Res 2002; 24: 582-92.
60. Lee JH, Martin NA, Alsina G, et al. Hemodynamically significant cerebral vasospasm and outcome after head injury: a prospective study. J Neurosurg 1997; 87: 221-33.
61. Dreier JP, Sakowitz OW, Harder A, et al. Focal laminar cortical MR signal abnormalities after subarachnoid hemorrhage. Ann Neurol 2002; 52: 825-9.
62. Rabinstein AA, Friedman JA, Weigand SD, et al. Predictors of cerebral infarction in aneurysmal subarachnoid hemorrhage. Stroke 2004; 35: 1862-6.
63. Unterberg AW, Sakowitz OW, Sarrafzadeh AS, Benndorf G, Lanksch WR. Role of bedside microdialysis in the diagnosis of cerebral vasospasm following aneurysmal subarachnoid hemorrhage. J Neurosurg 2001; 94: 740-9.
64. Minhas PS, Menon DK, Smielewski P, et al. Positron emission tomographic cerebral perfusion disturbances and transcranial Doppler findings among patients with neurological deterioration after subarachnoid hemorrhage. Neurosurgery 2003; 52: 1017-22; discussion 22-4.
65. Ohene-Frempong K, Weiner SJ, Sleeper LA, et al. Cerebrovascular accidents in sickle cell disease: rates and risk factors. Blood 1998; 91: 288-94.
66. Adams R, McKie V, Nichols F, et al. The use of transcranial ultrasonography to predict stroke in sickle cell disease. N Engl J Med 1992; 326: 605-10.
67. Adams RJ. TCD in sickle cell disease: an important and useful test. Pediatr Radiol 2005; 35: 229-34.
68. Fullerton HJ, Adams RJ, Zhao S, Johnston SC. Declining stroke rates in Californian children with sickle cell disease. Blood 2004; 104: 336-9.
69. Sampaio Silva G, Vicari P, Figueiredo MS, Filho AC, Valadi N, Massaro AR. Transcranial Doppler in adult patients with sickle cell disease. Cerebrovasc Dis 2006; 21: 38-41.
70. Sacco RL, Kargman DE, Zamanillo MC. Race-ethnic differences in stroke risk factors among hospitalized patients with cerebral infarction: the Northern Manhattan Stroke Study. Neurology 1995; 45: 659-63.
71. Kasner SE, Chimowitz MI, Lynn MJ, et al. Predictors of ischemic stroke in the territory of a symptomatic intracranial arterial stenosis. Circulation 2006; 113: 555-63.
72. Chimowitz MI, Lynn MJ, Howlett-Smith H, et al. Comparison of warfarin and aspirin for symptomatic intracranial arterial stenosis. N Engl J Med 2005; 352: 1305-16.
73. Baumgartner RW, Mattle HP, Schroth G. Assessment of >/1=50% and <50% intracranial stenoses by transcranial color-coded duplex sonography. Stroke 1999; 30: 87-92.
74. Wong KS, Li H, Lam WW, Chan YL, Kay R. Progression of middle cerebral artery occlusive disease and its relationship with further vascular events after stroke. Stroke 2002; 33: 532-6.
75. Warfarin Aspirin Symptomatic Intracranial Disease Trial W. Stroke outcome and neuroimaging of intracranial atherosclerosis (SONIA): design of a prospective, multicenter trial of diagnostic tests. Neuroepidemiology 2004; 23: 23-32.
76. Kidwell CS, Chalela JA, Saver JL, et al. Comparison of MRI and CT for detection of acute intracerebral hemorrhage. JAMA 2004; 292: 1823-30.
77. Razumovsky AY, Gillard JH, Bryan RN, Hanley DF, Oppenheimer SM. TCD, MRA and MRI in acute cerebral ischemia. Acta Neurol Scand 1999; 99: 65-76.
78. Camerlingo M, Casto L, Censori B, Servalli MC, Ferraro B, Mamoli A. Prognostic use of ultrasonography in acute non-hemorrhagic carotid stroke. Ital J Neurol Sci 1996; 17: 215-8.
79. Fieschi C, Argentino C, Lenzi GL, Sacchetti ML, Toni D, Bozzao L. Clinical and instrumental evaluation of patients with ischemic stroke within the first six hours. J Neurol Sci 1989; 91: 311-21.
80. Saqqur M, Shuaib A, Alexandrov AV, et al. Derivation of transcranial Doppler criteria for rescue intra-arterial thrombolysis: Multicenter experience from the Interventional Management of Stroke study. Stroke 2005; 36: 865-8.
81. Demchuk AM, Christou I, Wein TH, et al. Accuracy and criteria for localizing arterial occlusion with transcranial Doppler. J Neuroimaging 2000; 10: 1-12.
82. Kushner MJ, Zanette EM, Bastianello S, et al. Transcranial Doppler in acute hemispheric brain infarction. Neurology 1991; 41: 109-13.
83. Baracchini C, Manara R, Ermani M, Meneghetti G. The quest for early predictors of stroke evolution: can TCD be a guiding light? Stroke 2000; 31: 2942-7.
84. Alexandrov AV. Ultrasound identification and lysis of clots. Stroke 2004; 35: 2722-5.
85. Demchuk AM, Burgin WS, Christou I, et al. Thrombolysis in brain ischemia (TIBI) transcranial Doppler flow grades predict clinical severity, early recovery, and mortality in patients treated with intravenous tissue plasminogen activator. Stroke 2001; 32: 89-93.
86. Kaps M, Damian MS, Teschendorf U, Dorndorf W. Transcranial Doppler ultrasound findings in middle cerebral artery occlusion. Stroke 1990; 21: 532-7.
87. Ley-Pozo J, Ringelstein EB. Noninvasive detection of occlusive disease of the carotid siphon and middle cerebral artery. Ann Neurol 1990; 28: 640-7.
88. Alexandrov AV, Demchuk AM, Felberg RA, Grotta JC, Krieger DW. Intracranial clot dissolution is associated with embolic signals on transcranial Doppler. J Neuroimaging 2000; 10: 27-32.
89. Demchuk AM, Christou I, Wein TH, et al. Specific transcranial Doppler flow findings related to the presence and site of arterial occlusion. Stroke 2000; 31: 140-6.
90. Alexandrov AV, Molina CA, Grotta JC, et al. Ultrasound-enhanced systemic thrombolysis for acute ischemic stroke. N Engl J Med 2004; 351: 2170-8.
91. Labiche LA, Al-Senani F, Wojner AW, Grotta JC, Malkoff M, Alexandrov AV. Is the benefit of early recanalization sustained at 3 months? A prospective cohort study. Stroke 2003; 34: 695-8.
92. Alberts MJ, Latchaw RE, Selman WR, et al. Recommendations for comprehensive stroke centers: a consensus statement from the Brain Attack Coalition. Stroke 2005; 36: 1597-616.
93. Valdueza JM, Hoffmann O, Weih M, Mehraein S, Einhaupl KM. Monitoring of venous hemodynamics in patients with cerebral venous thrombosis by transcranial Doppler ultrasound. Arch Neurol 1999; 56: 229-34.
94. Babikian VL, Feldmann E, Wechsler LR, et al. Transcranial Doppler ultrasonography: year 2000 update. J Neuroimaging 2000; 10: 101-15.
95. Martin NA, Patwardhan RV, Alexander MJ, et al. Characterization of cerebral hemodynamic phases following severe head trauma: hypoperfusion, hyperemia, and vasospasm. J Neurosurg 1997; 87: 9-19.
96. Oertel M, Boscardin WJ, Obrist WD, et al. Posttraumatic vasospasm: the epidemiology, severity, and time course of an underestimated phenomenon: a prospective study performed in 299 patients. J Neurosurg 2005; 103: 812-24.
97. Shemie SD, Doig C, Dickens B, et al. Severe brain injury to neurological determination of death: Canadian forum recommendations. CMAJ 2006; 174: S1-13.
98. Kerridge IH, Saul P, Lowe M, McPhee J, Williams D. Death, dying and donation: organ transplantation and the diagnosis of death. J Med Ethics 2002; 28: 89-94.
99. Poularas J, Karakitsos D, Kouraklis G, et al. Comparison between transcranial color Doppler ultrasonography and angiography in the confirmation of brain death. Transplant Proc 2006; 38: 1213-7.
100. Wardlaw JM, Chappell FM, Best JJ, Wartolowska K, Berry E. Non-invasive imaging compared with intra-arterial angiography in the diagnosis of symptomatic carotid stenosis: a meta-analysis. Lancet 2006; 367: 1503-12.
101. Wilterdink JL, Feldmann E, Furie KL, Bragoni M, Benavides JG. Transcranial Doppler ultrasound battery reliably identifies severe internal carotid artery stenosis. Stroke 1997; 28: 133-6.
102. Russell D, Dybevold S, Kjartansson O, Nyberg-Hansen R, Rootwelt K, Wiberg J. Cerebral vasoreactivity and blood flow before and 3 months after carotid endarterectomy. Stroke 1990; 21: 1029-32.
103. Doblar DD. Intraoperative transcranial ultrasonic monitoring for cardiac and vascular surgery. Semin Cardiothorac Vasc Anesth 2004; 8: 127-45.
104. Bowles BJ, Lee JD, Dang CR, et al. Coronary artery bypass performed without the use of cardiopulmonary bypass is associated with reduced cerebral microemboli and improved clinical results. Chest 2001; 119: 25-30.
105. Harrison MJ, Pugsley W, Newman S, et al. Detection of middle cerebral emboli during coronary artery bypass surgery using transcranial Doppler sonography. Stroke 1990; 21: 1512.
106. Louridas G, Junaid A. Management of carotid artery stenosis. Update for family physicians. Can Fam Physician 2005; 51: 984-9.
107. Ackerstaff RG, Moons KG, van de Vlasakker CJ, et al. Association of intraoperative transcranial doppler monitoring variables with stroke from carotid endarterectomy. Stroke 2000; 31: 1817-23.
108. Ackerstaff RG, Vos JA. TCD-detected cerebral embolism in carotid endarterectomy versus angioplasty and stenting of the carotid bifurcation. Acta Chir Belg 2004; 104: 55-9.
109. Spencer MP. Transcranial Doppler monitoring and causes of stroke from carotid endarterectomy. Stroke 1997; 28: 685-91.
110. Arnold M, Sturzenegger M, Schaffler L, Seiler RW. Continuous intraoperative monitoring of middle cerebral artery blood flow velocities and electroencephalography during carotid endarterectomy. A comparison of the two methods to detect cerebral ischemia. Stroke 1997; 28: 13245-50.
111. 2 reactivity in arteriovenous malformations of the brain: a transcranial Doppler ultrasound study. J Neurosurg 1994; 80: 624-30.
112. Lindegaard KF, Grolimund P, Aaslid R, Nornes H. Evaluation of cerebral AVM's using transcranial Doppler ultrasound. J Neurosurg 1986; 65: 335-44.
113. Grolimund P, Seiler RW, Aaslid R, Huber P, Zurbruegg H. Evaluation of cerebrovascular disease by combined extracranial and transcranial Doppler sonography. Experience in 1,039 patients. Stroke 1987; 18: 1018-24.
114. Massaro AR, Young WL, Kader A, et al. Characterization of arteriovenous malformation feeding vessels by carbon dioxide reactivity. AJNR Am J Neuroradiol 1994; 15: 55-61.
115. Mast H, Mohr JP, Osipov A, et al. 'Steal' is an unestablished mechanism for the clinical presentation of cerebral arteriovenous malformations. Stroke 1995; 26: 1215-20.
116. Tyagi SK, Mahapatra AK, Mishra NK. Transcranial Doppler evaluation of blood flow velocity changes in basal cerebral arteries in cerebral AVMs following embolisation and surgery. Neurol India 2000; 48: 112-5.
117. Spetzler RF, Wilson CB, Weinstein P, Mehdorn M, Townsend J, Telles D. Normal perfusion pressure breakthrough theory. Clin Neurosurg 1978; 25: 651-72.
118. Mas JL, Arquizan C, Lamy C, et al. Recurrent cerebrovascular events associated with patent foramen ovale, atrial septal aneurysm, or both. N Engl J Med 2001; 345: 1740-6.
119. Droste DW, Lakemeier S, Wichter T, et al. Optimizing the technique of contrast transcranial Doppler ultrasound in the detection of right-to-left shunts. Stroke 2002; 33: 2211-6.
120. Telman G, Kouperberg E, Sprecher E, Yarnitsky D. The positions of the patients in the diagnosis of patent foramen ovale by transcranial Doppler. J Neuroimaging 2003; 13: 356-8.
121. Droste DW, Lakemeier H, Ritter M, et al. The identification of right-to-left shunts using contrast transcranial Doppler ultrasound: Performance and interpretation modalities, and absence of a significant side difference of cardiac micro-emboli. Neurol Res 2004; 26: 325-30.
122. Albert A, Muller HR, Hetzel A. Optimized transcranial Doppler technique for the diagnosis of cardiac right-to-left shunts. J Neuroimaging 1997; 7: 159-63.
123. Schwarze JJ, Sander D, Kukla C, Wittich I, Babikian VL, Klingelhofer J. Methodological parameters influence the detection of right-to-left shunts by contrast transcranial Doppler ultrasonography. Stroke 1999; 30: 1234-9.
124. Steiner MM, Di Tullio MR, Rundek T, et al. Patent foramen ovale size and embolic brain imaging findings among patients with ischemic stroke. Stroke 1998; 29: 944-8.
125. Anzola GP, Zavarize P, Morandi E, Rozzini L, Parrinello G. Transcranial Doppler and risk of recurrence in patients with stroke and patent foramen ovale. Eur J Neurol 2003; 10: 129-35.
126. Wagner LK. Diagnosis and management of preeclampsia. Am Fam Physician 2004; 70: 2317-24.
127. Will AD, Lewis KL, Hinshaw DB, Jr., et al. Cerebral vasoconstriction in toxemia. Neurology 1987; 37: 1555-7.
128. Lewis LK, Hinshaw DB, Jr., Will AD, Hasso AN, Thompson JR. CT and angiographic correlation of severe neurological disease in toxemia of pregnancy. Neuroradiology 1988; 30: 59-64.
129. Zatik J, Aranyosi J, Settakis G, et al. Breath holding test in preeclampsia: Lack of evidence for altered cerebral vascular reactivity. Int J Obstet Anesth 2002; 11: 160-3.
130. Franco-Macias E, Quesada CM, Cayuela-Dominguez A, Miranda-Guisado ML, Stieffel Garcia-Junco P, Gil-Peralta A. Anomalies in brain haemodynamics in pre-eclamptic expectant mothers. Rev Neurol 2003; 37: 615-8.
131. Belfort MA, Vamer MW, Dizon-Townson DS, Grunewald C, Nisell H. Cerebral perfusion pressure, and not cerebral blood flow, may be the critical determinant of intracranial injury in preeclampsia: A new hypothesis. Am J Obstet Gynecol 2002; 187: 626-34.
132. Zunker P, Happe S, Georgiadis AL, et al. Maternal cerebral hemodynamics in pregnancy-related hypertension. A prospective transcranial Doppler study. Ultrasound Obstet Gynecol 2000; 16: 179-87.
133. Williams KP, Moutquin JM. Do maternal cerebral vascular changes assessed by transcranial Doppler antedate pre-eclampsia? Ultrasound Obstet Gynecol 2004; 23: 254-6.