Abstract
Background
The inferior petrosal sinus (IPS) is the transvenous access route for neurointerventional surgery that is occasionally undetectable on digital subtraction angiography (DSA) because of blockage by a clot or collapse. This study was aimed at analyzing the distance from the jugular bulb (JB) to the IPS–internal jugular vein (IJV) junction and proposing a new anatomical classification system for the IPS–IJV junction to identify the non-visualized IPS orifice.
Methods
DSA of 708 IPSs of 375 consecutive patients were retrospectively investigated to calculate the distance from the top of the JB to the IPS–IJV junction, and a simple classification system based on this distance was proposed.
Results
The median distance from the top of the JB to the IPS–IJV junction was 20.8 ± 14.7 mm. Based on the lower (10.9 mm) and upper (31.1 mm) quartiles, IPS–IJV junction variants were: type I, 0–10 mm (22.3%); type II, 11–30 mm (45.8%); type III, > 31 mm (23.9%); and type IV, no connection to the IJV (8.0%). Bilateral distances showed a positive interrelationship, with a correlation coefficient of 0.86. The bilateral symmetry type (visualized IPSs bilaterally) according to our classification occurred in 267 of 300 (89.0%) patients.
Conclusions
In this study, the IPS–IJV junction was located far from the JB (types II and III), with a higher probability (69.6%). This distance and the four-type classification demonstrated high degrees of homology with the contralateral side. These results would be useful for identifying the non-visualized IPS orifice.
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Data availability
The authors confirm that the data supporting the findings of this study are available within the article.
Abbreviations
- ACCDAVF:
-
Anterior condylar confluence dural arteriovenous fistula
- CSDAVF:
-
Cavernous sinus dural arteriovenous fistula
- CTV:
-
Computed tomography venography
- DSA:
-
Digital subtraction angiography
- IJV:
-
Internal jugular vein
- IPS:
-
Inferior petrosal sinus
- IQR:
-
Interquartile range
- JB:
-
Jugular bulb
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Daisuke Yamamoto, Ichiyo Shibahara, Hiroyuki Koizumi, and Toshihiro Kumabe contributed to the study conception and design. Material preparation and data collection were performed by Jun Niki, Daisuke Ishima, Ryo Usui, Ayato Kimura, and Takuichiro Hide. Jun Oikawa helped in statistical analysis. The first draft of the manuscript was written by Daisuke Yamamoto, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Ethics Committee of the Kitasato University Hospital (B20-334, May 18, 2021).
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Yamamoto, D., Shibahara, I., Koizumi, H. et al. Angiographic evaluation of the distance from the top of the jugular bulb to the inferior petrosal sinus–internal jugular vein junction: simple classification and identification method for the orifice of the non-visualized inferior petrosal sinus during neuroendovascular surgery. Acta Neurochir 165, 4095–4103 (2023). https://doi.org/10.1007/s00701-023-05887-x
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DOI: https://doi.org/10.1007/s00701-023-05887-x