Noninvasive Evaluation of Patients Undergoing Ec/Ic Anastomoses Using Dynamic Ct and Doppler Sonography

Mehdorn, H. Maximilian; Nahser, H. C.; Spira, G.; John, V.; Jamjoom, Zain Alabedeen B.

doi:10.1097/00004728-198302000-00163

Cited by 2 publications

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“…There is therefore a need for a non-invasive imaging strategy that allows assessment of graft patency and intracranial graft function. Ultrasound has been applied to imaging EC-IC grafts in the past, [6][7][8] but its more widespread acceptance has been restricted until recently by specific technical limitations. However, rapid developments in ultrasound technology have dramatically improved the efficacy of the technique, resulting in a decreased reliance on catheter angiography for the investigation of intracranial and extracranial vascular diseases.…”

Section: Discussionmentioning

confidence: 99%

Harvey Williams Cushing (1869-1939)

Haas¹

2002

Journal of Neurology, Neurosurgery &Amp; Psychiatry

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Section: Discussionmentioning

confidence: 99%

Harvey Williams Cushing (1869-1939)

Haas¹

2002

Journal of Neurology, Neurosurgery &Amp; Psychiatry

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“…In dynamic CT study, by the value of %TH over the normal range, even the presence of extravasation can be shown. In the assessment of bypass operations, patency of the anastomosis can be easily demonstrated by this technique [2,8,11,15]. Norman reported that postoperative study showed marked improvement in the arterial transit time in two cases with superficial temporal-middle cerebral artery anastomosis [11].…”

Section: Cerebrovascular Occlusive Disordersmentioning

confidence: 99%

Dynamic computed tomography of the brain

1985

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Dynamic computed tomography (CT) scanning was performed on five normal subjects, 38 patients with cerebrovascular disorder, and 20 patients with brain tumours. It consisted of performing six rapid sequential scans after intravenous bolus injection of iodinated contrast medium. By gamma variate fit technique, five features (corrected first moment, area, peak, time to peak, and per cent terminal height) were obtained from a time-density curve in a region of interest. We compared these features in one side of the brain with those in the corresponding contralateral side and tried to get information about cerebral perfusion. These results showed that by this technique we are able to detect arterial occlusions or Moya moya diseases non-invasively and know earlier and more clearly the re-establishment of circulation in the occluded arteries and of extravasation of contrast medium in ischaemic regions than by conventional CT scanning. In arteriovenous malformations, serial images of dynamic CT scanning demonstrated the anatomical details of the nidus, and the afferent and efferent vessels. We can also identify an exact extent of tumoral invasion of the brain in patients with malignant brain tumor.

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Noninvasive Evaluation of Patients Undergoing Ec/Ic Anastomoses Using Dynamic Ct and Doppler Sonography

Cited by 2 publications

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Harvey Williams Cushing (1869-1939)

Harvey Williams Cushing (1869-1939)

Dynamic computed tomography of the brain

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