Microvascularization of the intracranial dura mater

Roland, J. Thomas; Bernard, C.; Bracard, Serge; Czorny, A.; Floquet, J; Race, J M; Forlodou, P.; Picard, L

doi:10.1007/bf02116853

Cited by 56 publications

(43 citation statements)

References 4 publications

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“…Roland et al 1987), which cannot be explained exclusively by the periosteal function of the cranial dura; practically the same density of vessels is found in the spinal dura ( Fig. 1), which does not serve any periosteal function.…”

Section: Selective Brain Cooling In Humans?mentioning

confidence: 88%

“…The dominant role is played by the external carotid arteries. All dural branches arising from these arteries show internal diameters between 400 and 800 ~tm and are interconnected by many intradural anastomoses that are found on the outer (periostal) surface of the dura (Kerber and Newton 1973;Roland et al 1987). These "primary anastomotic arteries" with more or less constant diameters of 100-300 ~tm, give rise to (1) numerous smaller arteries (40-80 ~tm i.d.)…”

Section: Vascular Arrangements In Human Meningesmentioning

confidence: 99%

“…1). The lumina of both the large and the small veins are separated from the dural tissue only by an endothelium (Roland et al 1987). Fenestrated postcapillary venules and capillaries are found in dural layers near the arachnoid membrane (Nabeshima et al 1975;Krisch et al 1983;Andres et al 1987;Zenker et al 1994).…”

Section: Dural Veinsmentioning

confidence: 99%

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Brain cooling in humans ? anatomical considerations

1996

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Vascular arrangements allowing a bulky transfer of venous blood from the skin of the head and from nasal and paranasal mucous membranes to the dura matter provide an excellent anatomical basis for the convection process of cooling, caused by evaporation of sweat or mucus. The dura mater, with its extraordinarily high vascularization controlled by a potent vasomotor apparatus, may transmit temperature changes to the cerebrospinal fluid (CSF) compartment. Temperature gradients of the CSF may in turn influence the temperature of brain parenchyma (1) directly, along the extensive contact area between the cerebrocortical surface and the CSF-compartment, or (2) indirectly, via brain arteries that extend over long distances and arborize within the subarachnoid space before entering the pial vascular network and brain parenchyma. Numerous subarachnoid and pial arterial branches exposed to the CSF have diameters in the range of the vessels of the retia mirabilia of animals in which selective brain cooling has been clearly established experimentally. It is also shown that the arrangements of venous plexuses within the vertebral canal provide anatomical preconditions for a cooling of the spinal cord via the CSF. The possibility of spinal cord and spinal ganglia cooling by temperature convection via venous blood--cooled in the venous networks of the skin of the back--flowing through numerous anastomoses to the external and internal vertebral plexuses and, finally, into the vascular bed of the spinal dura is discussed on the basis of anatomical facts.

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Section: Selective Brain Cooling In Humans?mentioning

confidence: 88%

Section: Vascular Arrangements In Human Meningesmentioning

confidence: 99%

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Brain cooling in humans ? anatomical considerations

1996

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“…There is no doubt that intracranial venous drainage plays a major role in the development of dAVE Many of these vascular malformations seem to develop after previous episodic thrombosis of the adjacent dural sinus [27,35]. It seems, that the process of recanalization of the sinus might be followed by the opening of arteriovenous shunts in the wall of the sinus due to the proximity of the arteries and veins into the dura [43]. In their experimental work Terada et al showed that increased intrasinusoidal pressure may play a role in the development of dAVF [48].…”

Section: Discussionmentioning

confidence: 99%

Dural arteriovenous fistulas including the transverse and sigmoid sinuses: Results of treatment in 30 cases

Olteanu-Nerbe

E²,

Steiger³

et al. 1997

Acta neurochir

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We report about the treatment and outcome of 30 patients with dural arteriovenous fistulas including the transverse and sigmoid sinuses treated between 1986 and 1995. All patients underwent panangiography for definitive diagnosis. The dAVF were supplied by the external carotid artery system alone (14 patients), both external and internal carotid systems (10 patients) or both anterior and posterior circulation (6 patients). Depending on the venous drainage the fistulas were classified following a modification of Djindjian's description with 18 patients revealing Type I (main sinus with antegrade flow), 5 Type II a (main sinus with reflux into the contralateral sinus). 5 Type II b (cortical veins), 1 Type II a+b (both) and 1 of Type III (direct cortical drainage). Bruit, pulsatile tinnitus and headaches were the most common symptoms. 6 patients presented with intracranial haemorrhage, 4 with progressive neurological deficit or seizures and 3 with dementia. Arterial embolization was performed in all cases except one, where a transvenous approach for balloon occlusion of the transverse sinus was performed. 21 patients were treated by single or repeated embolization alone. Only in 9/21 cases did arterial embolization result in complete occlusion of the fistula. In 12/21 patients incomplete occlusion was achieved. Following embolization 8 patients underwent additional surgery including coagulation of the feeding arteries and arterialized veins, sinus resection and reconstruction of the sinus. Overall, 18 patients were cured, 11 improved and 1 patient was unchanged. There was a total number of 5 complications including transient stroke, transient facial nerve palsy, and a small necrotic skin area following embolization. Venous infarction of the occipital lobe was induced by transvenous occlusion and surgical resection of the transverse sinus in one patient each, respectively. From our results we conclude that the endovascular therapy alone is the treatment of choice in case of Type I fistulas. In dAVF of Type II and III repeated endovascular treatment seems not to be sufficient and additional surgery is necessary.

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“…The dural membrane in rats is much thinner and therefore more transparent than in the human [10]- [11]. It might therefore be necessary to perforate the dura to make optical measurements from the human brain.…”

Section: Discussionmentioning

confidence: 99%

An Optical Fiber Photoplethysmographic System for Central Nervous System Tissue

Phillips

Kyriacou²,

George³

et al. 2006

2006 International Conference of the IEEE Engineering in Medicine and Biology Society

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Abstract-A new system for measuring the oxygen saturation of blood within tissue has been developed, for a number of potential patient monitoring applications. This proof of concept project aims to address the unmet need of real-time measurement of oxygen saturation in the central nervous system (CNS) for patients recovering from neurosurgery or trauma, by developing a fiber optic signal acquisition system for internal placement through small apertures. The development and testing of a two-wavelength optical fiber reflectance photoplethysmography (PPG) system is described. It was found that good quality red and near-infrared PPG signals could be consistently obtained from the human fingertip (n=6) and rat spinal cord (n=6) using the fiber optic probe. These findings justify further development and clinical evaluation of this fiber optic system.

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Microvascularization of the intracranial dura mater

Cited by 56 publications

References 4 publications

Brain cooling in humans ? anatomical considerations

Brain cooling in humans ? anatomical considerations

Dural arteriovenous fistulas including the transverse and sigmoid sinuses: Results of treatment in 30 cases

An Optical Fiber Photoplethysmographic System for Central Nervous System Tissue

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