scholarly journals Intracranial MR Venography Using L ow-Field Magnet: Normal Anatomy and Variations in Nepalese Population

2012 ◽  
Vol 52 (186) ◽  
Author(s):  
U K Sharma ◽  
K Sharma
Keyword(s):  
Imaging Modality ◽  
Anatomic Variation ◽  
Transverse Sinus ◽  
Dural Sinus ◽  
Cerebral Vein ◽  
Mr Venography ◽  
Internal Cerebral Vein ◽  
Sagittal Sinus ◽  
Vein Of Labbé ◽  
Basal Vein Of Rosenthal

Introduction: Magnetic resonance (MR) venography is considered a reliable imaging modality for the evaluation of intracranial venous system. The purpose of this study was to evaluate the normal venous anatomy and its variations in Nepalese population using low fi eld MR technique.  Methods: One hundred patients with normal MR imaging of brain underwent MR venographic study. MR venograms were performed in 0.35 T MR scanner using a contiguous 2D time-of–fl ight MR angiographic technique.  Results: The fl ow gaps in the transverse sinus were seen in 47% of population, of which 91% occurred in the non-dominant side. Right transverse sinus was dominant in 73% population. Flow gap was observed in bilateral transverse sinus in one case, while it was seen in the dominant right transverse sinus in 6.3% population. Inferior sagittal sinus was observed in 11% cases. Internal cerebral vein was seen in 60 cases. Occipital sinus was observed in 4% of the cases. The basal vein of Rosenthal was observed in 34% of the cases, whereas vein of Labbe seen in 8% cases. Unilateralfl ow gap in the sigmoid sinus was seen in 5 cases.  Conclusions: MR angiography done at low fi eld MR unit is a reliable tool in cerebral venous sinus assessment, particularly major dural sinuses. The fl ow gaps in transverse sinus are frequently encountered anatomic variation. Visualization of small veins like inferior sagittal sinus, basal vein of Rosenthal, vein of Labbe, internal cerebral vein was inferior in our study compared to other studies done in high fi eld MR unit.  Keywords: Dural sinus, intracranial veins, MR venography.

Dural sinus thrombosis and pseudotumor cerebri: unexpected complications of suboccipital craniotomy and translabyrinthine craniectomy

1999 ◽  
Vol 91 (2) ◽  
pp. 192-197 ◽  
Author(s):  
Glenn L. Keiper ◽  
Jonathan D. Sherman ◽  
Thomas A. Tomsick ◽  
John M. Tew
Keyword(s):  
Sinus Thrombosis ◽  
Pseudotumor Cerebri ◽  
Transverse Sinus ◽  
Dural Sinus ◽  
Posterior Fossa Surgery ◽  
Dural Sinus Thrombosis ◽  
Mr Venography ◽  
Content Type ◽  
Suboccipital Craniotomy ◽  
Fine Print

Object. The goal of this study was to document the hazards associated with pseudotumor cerebri resulting from transverse sinus thrombosis after tumor resection. Dural sinus thrombosis is a rare and potentially serious complication of suboccipital craniotomy and translabyrinthine craniectomy. Pseudotumor cerebri may occur when venous hypertension develops secondary to outflow obstruction. Previous research indicates that occlusion of a single transverse sinus is well tolerated when the contralateral sinus remains patent.Methods. The authors report the results in five of a total of 107 patients who underwent suboccipital craniotomy or translabyrinthine craniectomy for resection of a tumor. Postoperatively, these patients developed headache, visual obscuration, and florid papilledema as a result of increased intracranial pressure (ICP). In each patient, the transverse sinus on the treated side was thrombosed; patency of the contralateral sinus was confirmed on magnetic resonance (MR) imaging. Four patients required lumboperitoneal or ventriculoperitoneal shunts and one required medical treatment for increased ICP. All five patients regained their baseline neurological function after treatment. Techniques used to avoid thrombosis during surgery are discussed.Conclusions. First, the status of the transverse and sigmoid sinuses should be documented using MR venography before patients undergo posterior fossa surgery. Second, thrombosis of a transverse or sigmoid sinus may not be tolerated even if the sinus is nondominant; vision-threatening pseudotumor cerebri may result. Third, MR venography is a reliable, noninvasive means of evaluating the venous sinuses. Fourth, if the diagnosis is made shortly after thrombosis, then direct endovascular thrombolysis with urokinase may be a therapeutic option. If the presentation is delayed, then ophthalmological complications of pseudotumor cerebri can be avoided by administration of a combination of acetazolamide, dexamethasone, lumbar puncture, and possibly lumboperitoneal shunt placement.

Transcranial approach for venous embolization of dural arteriovenous fistulas

2002 ◽  
Vol 97 (2) ◽  
pp. 280-286 ◽  
Author(s):  
Emmanuel Houdart ◽  
Jean-Pierre Saint-maurice ◽  
René Chapot ◽  
Adam Ditchfield ◽  
Alexandre Blanquet ◽  
...  
Keyword(s):  
Operating Room ◽  
Sinus Thrombosis ◽  
Transverse Sinus ◽  
Dural Sinus ◽  
Content Type ◽  
Arteriovenous Fistulas ◽  
Sagittal Sinus ◽  
First Case ◽  
Transcranial Approach ◽  
Fine Print

Object. Transvenous embolization is effective in the treatment of an intracranial dural arteriovenous fistula (DAVF). Access to the fistula via the internal jugular vein (IJV) may be limited by associated dural sinus thrombosis; a transcranial approach has been developed for venous embolization in such a situation. The authors report their experiences with the use of a transcranial approach for venous embolization of DAVFs. Methods. Ten patients with DAVFs underwent craniectomy and embolization procedures in which direct sinus puncture was performed. The DAVFs were located inside the dura mater that constituted the walls of the transverse sinus in five cases, the superior sagittal sinus in four cases, and the superior petrosal sinus in one case. All DAVFs drained directly into a sinus with secondary reflux into leptomeningeal veins. In all cases, the fistula could not be accessed from the IJVs. Craniectomy was performed in an operating room and, in seven cases, subsequent enlargement of the craniectomy was required. Sinus catheterization was performed after the patient had been transferred to the angiography room. The DAVFs were embolized using coils only in five patients, glue only in two patients, and both coils and glue in three patients. Angiographic confirmation that embolization of the fistula was successful was obtained in all cases. A transient complication occurred during the first case after sinus catheterization was attempted in the operating room. Conclusions. The transcranial approach allows straightforward access to DAVFs located on superficial dural sinuses that are inaccessible from the IJVs. The effectiveness of this approach is similar to that of the standard retrograde venous approach. The correct location and adequate extent of the craniectomy are essential for success to be achieved using this technique.

Management and outcome of spontaneous cerebral venous sinus thrombosis in a 5-year consecutive single-institution cohort

2016 ◽  
Vol 9 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Darrin J Lee ◽  
Arjang Ahmadpour ◽  
Tamar Binyamin ◽  
Brian C Dahlin ◽  
Kiarash Shahlaie ◽  
...  
Keyword(s):  
Superior Sagittal Sinus ◽  
Sinus Thrombosis ◽  
Anticoagulation Therapy ◽  
Transverse Sinus ◽  
Cerebral Venous Sinus Thrombosis ◽  
Venous Sinus ◽  
Dural Sinus ◽  
Venous Sinus Thrombosis ◽  
Sagittal Sinus ◽  
The Impact

BackgroundCerebral venous sinus thrombosis (CVST) is an uncommon form of stroke with a variable presentation, ranging from headaches, to coma and death. Although the American Stroke Association has developed guidelines for the treatment of CVST, data are sparse on the outcome after treatment with anticoagulation, thrombolysis, and thrombectomy.MethodsIn this retrospective review, we describe the 5-year UC Davis experience with spontaneous CVST.ResultsForty-one patients (mean age 37.5±23.1, range 0–96 years; 29 female) were identified with CVST. The majority of cases involved the transverse sinus (75.6%), sigmoid sinus (58.5%), and superior sagittal sinus (29.3%). The most common form of treatment was anticoagulation or antiplatelet therapy (n=35), while six patients were managed by observation alone. The overall 1-year modified Rankin score (mRS) was 1.4±1.5. Male patients and patients with a poor admission mRS had a worse outcome. Outcome was unaffected by hypercoagulable state, number of dural sinuses involved, the presence of intracranial hemorrhage, or seizures. Two patients who underwent anticoagulation therapy also required endovascular thrombectomy; both patients had a 1-year mRS of ≤2. Two patients underwent direct open surgical canalization of the superior sagittal sinus with varying outcomes (mRS 2 vs mRS 6).ConclusionsIn our series, the majority (92.9%) of patients with spontaneous dural sinus thrombosis had a favorable clinical outcome as defined by a mRS ≤2. Further prospective studies are needed to study the impact of anticoagulation on the clinical course of the disease.

Neonatal giant dural sinus ectasia: a multimodality imaging approach

2021 ◽  
Vol 14 (9) ◽  
pp. e242439
Author(s):  
Ralph Rommualdo Abareta Zuniega ◽  
Julian Alejandro Santos ◽  
Romelito Jose Galvan Galsim ◽  
Jonathan Saputil Elevazo
Keyword(s):  
Multimodality Imaging ◽  
Case Reports ◽  
Case Series ◽  
Transverse Sinus ◽  
Venous Sinus ◽  
Cardiac Insufficiency ◽  
Dural Sinus ◽  
Dural Sinuses ◽  
Sagittal Sinus ◽  
Dural Venous Sinus

Dural venous sinus ectasia is a rare anomaly characterised by the formation of a large vascular lake within the leaves of the dural sinuses, usually associated with thrombosis. These lesions can cause brain compression, cardiac insufficiency and disseminated intravascular coagulation, which may lead to poor prognosis. We present the case of a neonate who presented with an intracranial mass on prenatal ultrasound. Postnatal transcranial ultrasonography, cranial CT and cranial MRI demonstrated a large lesion predominantly occupying the dural sinus confluence, extending into the sagittal sinus, straight sinus and right transverse sinus. The left marginal sinus remains unfused and patent. Concomitant arteriovenous malformations were evident in the median interhemispheric fissure and the left Sylvian fissure. There are several published case reports and case series describing malformations of the dural sinuses in perinatal and neonatal patients in recent years, but this case is unique in that: (1) there is the presence of a vascular malformation concomitant to the dural sinus ectasia and (2) it highlights the importance of imaging in clinching the diagnosis of giant dural venous sinus ectasia, as it is often misdiagnosed as more common conditions such as extra-axial intracranial haemorrhage.

Aminergic innervation of cerebral veins

1984 ◽  
Vol 60 (1) ◽  
pp. 140-144 ◽  
Author(s):  
Toru Itakura ◽  
Kazuo Nakakita ◽  
Ichiro Kamei ◽  
Yutaka Naka ◽  
Kunio Nakai ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Femoral Vein ◽  
Nerve Fibers ◽  
Dural Sinus ◽  
Cerebral Vein ◽  
Cerebral Veins ◽  
Content Type ◽  
Internal Cerebral Vein ◽  
Aminergic Innervation ◽  
Longitudinal Pattern

✓ The density and distribution pattern of aminergic nerve fibers in intracranial and extracranial veins were compared by means of catecholamine histofluorescence studies. Extracranial veins (internal jugular, inferior caval, portal, renal, internal iliac, and femoral veins) showed quite a uniform distribution pattern. Large veins (jugular, caval, renal, and iliac veins) revealed a spiral pattern, and small veins presented as a meshwork (femoral vein) or in a longitudinal pattern (a branch of the femoral vein). In contrast, intracranial veins displayed more complex patterns: the dural sinus showed a longitudinal pattern and the internal cerebral vein and the superficial vein of Labbé revealed a meshwork of nerve fibers. The aminergic fibers were denser in cerebral veins (dural sinus and internal cerebral vein) than in extracranial veins. The complex distribution and the density of aminergic fibers in cerebral veins suggest that the aminergic innervation of the circulatory system may be more important in the brain than in the extracranial organs.

scholarly journals Selective Transvenous Embolization for Dural Arteriovenous Fistulas with the Aid of Superselective Venograms of Fistulous Drainages and Involved Sinuses

2004 ◽  
Vol 10 (1_suppl) ◽  
pp. 43-50 ◽  
Author(s):  
M. Nakamura ◽  
Y. Nakamura ◽  
A. Fujita ◽  
E. Kohmura
Keyword(s):  
Developmental Process ◽  
Sinus Thrombosis ◽  
Transverse Sinus ◽  
Dural Sinus ◽  
Transvenous Embolization ◽  
Arteriovenous Fistulas ◽  
Sagittal Sinus ◽  
Arteriovenous Shunts ◽  
Dural Arteriovenous Fistulas ◽  
Sinus Drainage

For the treatment of transvenous embolization (TVE) of dural arteriovenous fistulas (DAVFs) the sites of arteriovenous shunts, fistulous drainage, and the pathological changes inside the affected sinuses were explored in detail by means of preoperative arteriograms, superselective arteriograms, and superselective venograms. Out of 42 adult patients with DAVFs involving a total of 63 sinuses, three distinctive findings were identified as essential for indication of selective TVE for DAVFs. The first is extra-sinus fistulous drainage, which is embolizable fistulous drainage, remote from the major dural sinus, that flows into the sinus lumen. The second is intramural fistulous drainage, which is embolizable fistulous drainage located within the dural leafs of the involved sinus and separate from the major sinus lumen. The third consists of several lumens inside the affected sinuses, which suggests a variety of histological changes in the developmental process of sinus thrombosis and DAVFs. The extra-sinus drainage was occluded in three torcular heroplili fistulas and three transverse sinus fistulas. The intramural fistulous drainage was eliminated in three superior sagittal sinus fistulas. Several lumens inside the affected sinuses were encountered in 17 posterior fossa fistulas (68%) and 10 cavernous sinus fistulas (34%). These distinctive findings were recognized in 52% of the DAVFs. Out of various modalities for treatment of DAVFs, TVE has been the method of choice for the treatment of diffuse DAVFs. The TVE of DAVFs do not correspond to simple sinus occlusion, but imply selective occlusion of fistulous drainages and sinus lumens. The recognition of these three distinctive types of fistulous drainages have clinical impact in that it helps to completely occlude all the fistulous components of fistulas as well as preserve or restore the normal venous outflow through the involved sinus.

scholarly journals MRV BRAIN NORMALANATOMICAL VARIANTS IN INDIA POPULATION

2020 ◽  
pp. 59-62
Author(s):  
Vemireddy Sreechand Reddy ◽  
Apoorva. C ◽  
Ankamma Rao. D
Keyword(s):  
Sinus Thrombosis ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Transverse Sinus ◽  
Cerebral Venous Sinus Thrombosis ◽  
Venous Sinus ◽  
Mr Venography ◽  
Medical College ◽  
Sagittal Sinus ◽  
Dural Venous Sinus

Introduction Knowledge of variations in the cerebral dural venous sinus anatomy seen on magnetic resonance (MR) venography is essential to avoid over-diagnosis of cerebral venous sinus thrombosis (CVST). Very limited data is available on gender difference of the cerebral dural venous sinus anatomy variations Materials and Methods A retrospective study was conducted in NRI medical college in the Department of Radiodiagnosis for a duration of 3 years to study the normal anatomy of the intracranial venous system and its normal variation, as depicted by 3D MR venography, in normal adults and any gender-related differences. Results A total of (46 men, 54 women, age range 12 to 81 years), were included in the study. Most common indication for MR venography was headache (80%). Hypoplastic left transverse sinus was the most common anatomical variation in (25%) patients. Left transverse sinus was hypoplastic in more commonly in male in comparison to females (13 versus 12). Most common variation of superior sagittal sinus (SSS) was hypoplastic anterior one third SSS ,. Conclusion Hypoplastic left transverse sinus is the most common anatomical variation and more common in male compared to female in the present study. Other anatomical variations of dural venous sinuses are not significantly differ among both genders.

scholarly journals Innervation of the Cerebral Veins as Compared with the Cerebral Arteries: A Histochemical and Electron Microscopic Study

1983 ◽  
Vol 3 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Kazuo Nakakita ◽  
Harumichi Imai ◽  
Ichiro Kamei ◽  
Yutaka Naka ◽  
Kunio Nakai ◽  
...  
Keyword(s):  
Cerebral Arteries ◽  
Nerve Fibers ◽  
Venous System ◽  
Arterial System ◽  
Dural Sinus ◽  
Cerebral Vein ◽  
Cerebral Veins ◽  
Electron Microscopic ◽  
Internal Cerebral Vein ◽  
Green Fluorescent

The distribution of nerve fibers in the cerebral veins was studied by catecholamine fluorescence simultaneously with acetylcholinesterase (AChE) histochemistry. A comparison of nerve fibers in the cerebral arteries was made, The ultrastructure of terminal boutons in the veins fixed with potassium permanganate was also studied, In the adventitia of the cerebral artery, green fluorescent aminergic fibers and brownish AChE-reactive (probably cholinergic) fibers were observed. In contrast, the cerebral venous system showed no AChE-positive fibers. Catecholamine fluorescent varicose fibers were detected in the dural sinus, the internal cerebral vein, and the superficial vein of Labbé. The highest density of aminergic fibers was found in the dural sinus and the second highest in the internal cerebral vein. Most of the terminal boutons in the adventitia of the cerebral veins were found adjacent to a muscle-like cell and showed only cored vesicles under electron microscopy. Results of our study suggest that the cerebral venous system has a neurogenic innervation, mainly from aminergic fibers, which is different from the neurogenic supply to the cerebral arterial system.

scholarly journals Case Report: Traumatic vein of Labbé hemorrhagic infarction - a distinct neurosurgical entity

F1000Research ◽  
2015 ◽  
Vol 4 ◽  
pp. 586
Author(s):  
Sunil Munakomi ◽  
Bijoy Kumar
Keyword(s):  
Traffic Accident ◽  
Road Traffic ◽  
Sinus Thrombosis ◽  
Petrous Bone ◽  
Transverse Sinus ◽  
Uneventful Recovery ◽  
Mr Venography ◽  
Haemorrhagic Infarction ◽  
Ct Head ◽  
Vein Of Labbé

Traumatic vein of Labbé haemorrhagic infarction is a distinct neurosurgical entity which requires special attention due to the important nature of the area it drains and its higher propensity for early uncal herniation. Herein we discuss the case of a 55 year-old male presenting with altered sensorium following a road traffic accident. His computerized tomogram (CT) head was suggestive of traumatic vein of Labbé haemorrhagic infarction which was subsequently confirmed by magnetic resonance (MR) venography. Due to impending herniation, he underwent urgent craniotomy and evacuation of hematoma.The patient made an uneventful recovery and was subsequently discharged home.This diagnosis should always be kept in mind for a patient with petrous bone fracture, transverse sinus thrombosis and hematoma in the mid and posterior temporal lobe.

The vein of Labbe masquerading as an epidural abscess

2007 ◽  
Vol 121 (8) ◽  
Author(s):  
M Kraus ◽  
I Shelef ◽  
A Niv ◽  
D M Kaplan
Keyword(s):  
Ct Scan ◽  
Computerized Tomography ◽  
Epidural Abscess ◽  
Transverse Sinus ◽  
Ct Scans ◽  
Cerebral Vein ◽  
Subperiosteal Abscess ◽  
Superficial Middle Cerebral Vein ◽  
Vein Of Labbé ◽  
Vascular Variant

AbstractThe occipitotemporal vein (OTV) courses over the temporal lobe, connecting the superficial middle cerebral vein and the transverse sinus. This vein is rarely identifiable on computerized tomography (CT) scans and a large amount of contrast is needed to identify such a relatively small vessel. We present a 12-month-old male with acute coalescent mastoiditis and a subperiosteal abscess. An epidural abscess was suspected on pre-operative CT scan. No abscess was found on surgery. Based on the surgical finding, we determined that this misdiagnosis was due to a vascular variant, the occipitotemporal vein (vein of Labbe) that masqueraded as an abcess on the CT scan. Recognition of the vein of Labbe on CT scan is therefore essential for the appropriate management of otological and neurotological disease.

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