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Analysis of the intercavernous sinuses using multidetector computed tomography digital subtraction venography
Katsuhiro Mizutani1, Masahiro Toda1, Kazunari Yoshida1
1Department of Neurosurgery, School of Medicine, Keio University, Shinjuku City, Tokyo, Japan.
Clinical Neurology and Neurosurgery
|February 14, 2015
Summary
Computed tomography digital subtraction venography (CT-DSV) effectively visualizes intercavernous sinuses (ICSs) anatomy. This method aids in understanding normal blood flow and is valuable for surgical planning, especially in cases with normal sellar anatomy.
Area of Science:
- Radiology
- Neuroanatomy
- Vascular Imaging
Background:
- Intercavernous sinuses (ICSs) connect the cavernous sinuses, crucial for endoscopic endonasal transsphenoidal surgery.
- Previous anatomical studies relied on cadavers, limiting direct assessment of human blood flow.
- A standardized radiological method for ICS evaluation was lacking.
Purpose of the Study:
- To evaluate the utility of computed tomography digital subtraction venography (CT-DSV) for assessing intercavernous sinus anatomy.
- To investigate the prevalence and characteristics of ICSs in patients with normal sellar anatomy.
Main Methods:
- Retrospective analysis of 97 cases with unruptured cerebral aneurysms and normal sellar anatomy.
- Utilized multi-planar reconstruction images from CT-DSV for detailed anatomical evaluation.
Main Results:
- Anterior ICS (AICS), inferior ICS (IICS), and posterior ICS (PICS) were visualized in 52.6%, 28.9%, and 78.4% of cases, respectively.
- AICS detection was significantly lower in individuals over 51 years old compared to those younger than 50.
Conclusions:
- CT-DSV provides direct visualization of blood flow within the ICSs, surpassing cadaveric studies.
- CT-DSV is a valuable tool for evaluating ICS anatomy and understanding normal venous drainage patterns.
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