The Experts below are selected from a list of 6 Experts worldwide ranked by ideXlab platform
Chloé Dumot - One of the best experts on this subject based on the ideXlab platform.
-
Planning of Endocranial Supratentorial Basal Cistern and Skull Base Approaches Depending on Venous Patterns Using a Topogram.
World Neurosurgery, 2020Co-Authors: M. Sindou, Chloé DumotAbstract:Background Because damage or sacrifice of venous drainage during supratentorial basal cistern and skull base approaches may have severe and harmful consequences, methods to identify preoperatively Veins at risk are of paramount importance. Among methods, a codified assessment with a venous topogram is helpful, with practical implications. Methods This technical note describes how to construct an easy-to-use topogram. Three regions of interest are defined as triangles. The anterior triangle corresponds to the anterior frontal Veins draining to the superior sagittal sinus at risk during anterior Cerebral fossa surgery, the middle triangle corresponds to the anterior sylvian Veins draining to the cavernous sinus at risk during pterional approaches, and the Inferior triangle corresponds to the Inferior Cerebral Veins draining to the transverse sinus at risk in subtemporal approaches and temporal lobe surgery. Results Depending on predominance of the drainage, 4 situations were defined: an anterior, an Inferior, and a middle predominance or equilibrium between the 3 triangles. These anatomic features have important practical implications in skull base and basal cistern approaches. Conclusions This is, to our knowledge, the only topogram described in the scientific literature. Any well-defined approach should be adapted to the individual patient according not only to location and type of lesion but also to the venous drainage to be encountered along the way.
M. Sindou - One of the best experts on this subject based on the ideXlab platform.
-
Planning of Endocranial Supratentorial Basal Cistern and Skull Base Approaches Depending on Venous Patterns Using a Topogram.
World Neurosurgery, 2020Co-Authors: M. Sindou, Chloé DumotAbstract:Background Because damage or sacrifice of venous drainage during supratentorial basal cistern and skull base approaches may have severe and harmful consequences, methods to identify preoperatively Veins at risk are of paramount importance. Among methods, a codified assessment with a venous topogram is helpful, with practical implications. Methods This technical note describes how to construct an easy-to-use topogram. Three regions of interest are defined as triangles. The anterior triangle corresponds to the anterior frontal Veins draining to the superior sagittal sinus at risk during anterior Cerebral fossa surgery, the middle triangle corresponds to the anterior sylvian Veins draining to the cavernous sinus at risk during pterional approaches, and the Inferior triangle corresponds to the Inferior Cerebral Veins draining to the transverse sinus at risk in subtemporal approaches and temporal lobe surgery. Results Depending on predominance of the drainage, 4 situations were defined: an anterior, an Inferior, and a middle predominance or equilibrium between the 3 triangles. These anatomic features have important practical implications in skull base and basal cistern approaches. Conclusions This is, to our knowledge, the only topogram described in the scientific literature. Any well-defined approach should be adapted to the individual patient according not only to location and type of lesion but also to the venous drainage to be encountered along the way.
Sung Sang Yoon - One of the best experts on this subject based on the ideXlab platform.
-
The Usefulness of the Source Images of Magnetic Resonance Angiogram in the Carotid Cavernous Fistula
TheScientificWorldJournal, 2011Co-Authors: Bon D. Ku, Hak Yiung Rhee, Sung Sang YoonAbstract:The cortical venous drainage from carotid-cavernous fistula (CCF) is associated with increased risk of intraparenchymal hemorrhage and may be the clue for the urgent indication of an endovascular treatment [1]. However it is difficult to infer direction of venous drainage from the clinical signs or symptoms of a patient with CCF. The source images of magnetic resonance angiogram (MRA) may useful to detect the direction and magnitude of the collateral circulations in the patient with carotid-cavernous fistula (CCF) [2]. A 68-year-old woman presented with progressive bilateral pulsatile tinnitus, headache and diplopia accompanied by swelling of both eyes, the right eye being more severely affected. She underwent surgical reconstruction of fractured facial bone 6 weeks ago due to car accident. From the 30th days after reconstruction, she suffered persistent progressive pulsatile tinnitus and periorbital pain. The MRA revealed marked leakage signals of arterial blood around cavernous sinus (Figure 1). The source image of MRA revealed increased transsellar collaterals, enlarged both sphenoparietal sinus and right side predominant elongated bilateral tortuous superior ophthalmic Veins (Figure 2). Figure 1 The magnetic resonance angiogram (MRA) of the patient showed increased flow related signals around both cavernous sinuses. Figure 2 The source image of magnetic resonance angiogram (MRA) revealed increased transsellar collaterals (a, b), enlarged both Inferior Cerebral Veins (C; arrow) and right side predominant elongated bilateral tortuous superior ophthalmic Veins (c, d; arrow head). ...
Bon D. Ku - One of the best experts on this subject based on the ideXlab platform.
-
The Usefulness of the Source Images of Magnetic Resonance Angiogram in the Carotid Cavernous Fistula
TheScientificWorldJournal, 2011Co-Authors: Bon D. Ku, Hak Yiung Rhee, Sung Sang YoonAbstract:The cortical venous drainage from carotid-cavernous fistula (CCF) is associated with increased risk of intraparenchymal hemorrhage and may be the clue for the urgent indication of an endovascular treatment [1]. However it is difficult to infer direction of venous drainage from the clinical signs or symptoms of a patient with CCF. The source images of magnetic resonance angiogram (MRA) may useful to detect the direction and magnitude of the collateral circulations in the patient with carotid-cavernous fistula (CCF) [2]. A 68-year-old woman presented with progressive bilateral pulsatile tinnitus, headache and diplopia accompanied by swelling of both eyes, the right eye being more severely affected. She underwent surgical reconstruction of fractured facial bone 6 weeks ago due to car accident. From the 30th days after reconstruction, she suffered persistent progressive pulsatile tinnitus and periorbital pain. The MRA revealed marked leakage signals of arterial blood around cavernous sinus (Figure 1). The source image of MRA revealed increased transsellar collaterals, enlarged both sphenoparietal sinus and right side predominant elongated bilateral tortuous superior ophthalmic Veins (Figure 2). Figure 1 The magnetic resonance angiogram (MRA) of the patient showed increased flow related signals around both cavernous sinuses. Figure 2 The source image of magnetic resonance angiogram (MRA) revealed increased transsellar collaterals (a, b), enlarged both Inferior Cerebral Veins (C; arrow) and right side predominant elongated bilateral tortuous superior ophthalmic Veins (c, d; arrow head). ...
Hak Yiung Rhee - One of the best experts on this subject based on the ideXlab platform.
-
The Usefulness of the Source Images of Magnetic Resonance Angiogram in the Carotid Cavernous Fistula
TheScientificWorldJournal, 2011Co-Authors: Bon D. Ku, Hak Yiung Rhee, Sung Sang YoonAbstract:The cortical venous drainage from carotid-cavernous fistula (CCF) is associated with increased risk of intraparenchymal hemorrhage and may be the clue for the urgent indication of an endovascular treatment [1]. However it is difficult to infer direction of venous drainage from the clinical signs or symptoms of a patient with CCF. The source images of magnetic resonance angiogram (MRA) may useful to detect the direction and magnitude of the collateral circulations in the patient with carotid-cavernous fistula (CCF) [2]. A 68-year-old woman presented with progressive bilateral pulsatile tinnitus, headache and diplopia accompanied by swelling of both eyes, the right eye being more severely affected. She underwent surgical reconstruction of fractured facial bone 6 weeks ago due to car accident. From the 30th days after reconstruction, she suffered persistent progressive pulsatile tinnitus and periorbital pain. The MRA revealed marked leakage signals of arterial blood around cavernous sinus (Figure 1). The source image of MRA revealed increased transsellar collaterals, enlarged both sphenoparietal sinus and right side predominant elongated bilateral tortuous superior ophthalmic Veins (Figure 2). Figure 1 The magnetic resonance angiogram (MRA) of the patient showed increased flow related signals around both cavernous sinuses. Figure 2 The source image of magnetic resonance angiogram (MRA) revealed increased transsellar collaterals (a, b), enlarged both Inferior Cerebral Veins (C; arrow) and right side predominant elongated bilateral tortuous superior ophthalmic Veins (c, d; arrow head). ...