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Brain & Heart Cerebral venous sinus assessment using MRI and CT

underscored the potential impact of non-invasive imaging Ethics approval and consent to participate
modalities on anatomical analysis. Further investigation
is warranted to justify the prevalence of such variations The Research Ethics Committee of Beijing Friendship
to facilitate the more convenient diagnosis of venous Hospital, Capital Medical University, approved this
abnormalities related to PT. Second, digital subtraction study (Ethics approval code: 2023-P2-095-01). Data were
angiography (DSA) was not incorporated in this study. collected retrospectively, and no further procedure was
performed; hence, informed consent was waived.
Despite its utility in detecting vascular abnormalities in
PT patients, the invasiveness of DSA has restricted its use Consent for publication
exclusively to guide interventional radiology procedures.
33
However, DSA has demonstrated superior performance All images used in this study were anonymized; hence,
in assessing collateral venous drainage. Hence, further consent for publication was waived.
evaluation is required to evaluate the impact of additional Availability of data
drainage on comprehensively understanding PT diagnosis.
32
Thirdly, CTV data and visual-based vein segmentation served The data used in this study will be made available on
as the reference in the present study. To mitigate human error, request after publication.
geometric reconstruction was conducted with input from
experts. In addition, repeated measurements were conducted References
to assess the consistency of visual-based evaluations, 1. Essibayi MA, Oushy SH, Lanzino G, Brinjikji W. Venous
revealing a high correlation between measurements. causes of pulsatile tinnitus: Clinical presentation,
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MRI has demonstrated high efficacy in assessing venous sinus
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MRI offers enhanced visualization of collateral vessels, 2. Nicholson P, Brinjikji W, Radovanovic I, et al. Venous
thereby potentially facilitating a more accurate diagnosis of sinus stenting for idiopathic intracranial hypertension:
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on anatomical analysis. While CTV-based evaluations may 2019;11(4):380-385.
be affected by the bone structures surrounding the venous doi: 10.1136/neurintsurg-2018-014172
sinus, MRI-based evaluations primarily focus on blood flow 3. Zhao P, Ding H, Lv H, et al. CT venography correlate of
within the segments, thus enabling the detection of both transverse sinus stenosis and venous transstenotic pressure
anatomical and functional abnormalities. gradient in unilateral pulsatile tinnitus patients with sigmoid

Acknowledgments sinus wall anomalies. Eur Radiol. 2021;31(5):2896-2902.
doi: 10.1007/s00330-020-07415-2
None.
4. Zhao P, Lv H, Dong C, Niu Y, Xian J, Wang Z. CT evaluation
Funding of sigmoid plate dehiscence causing pulsatile tinnitus. Eur
Radiol. 2016;26:9-14.
This study is supported by the National Natural Science
Foundation of China (grant nos.: 82202098, 61931013, doi: 10.1007/s00330-015-3827-8
and 82001910) and the Natural Science Foundation of 5. Li Y, Chen H, He L, et al. Hemodynamic assessments of
Guangdong Province, China (2019A1515011463). venous pulsatile tinnitus using 4D-flow MRI. Neurology.
2018;91(6):e586-e593.
Conflict of interest doi: 10.1212/WNL.0000000000005948

The authors declare that they have no competing interests. 6. Heyu D, Pengfei Z, Han L, et al. A new method for assessing
transverse sinus stenosis with CT venography based on the
Author contributions venous trans-stenotic pressure gradient. J Neurointerv Surg.

Conceptualization: Xin Liu, Heyu Ding, Zhenchang Wang 2023;15(10):1034-1038.
Formal analysis: Pengfei Zhao, Shusheng Gong doi: 10.1136/jnis-2022-019270
Investigation: Xin Liu, Zhenxin Hong, Heyu Ding 7. Patel D, Machnowska M, Symons S, et al. Diagnostic
Methodology: Xin Liu, Zhenxin Hong, Heyu Ding performance of routine brain MRI sequences for dural
Writing – original draft: Xin Liu, Zhenxin Hong venous sinus thrombosis. AJNR Am J Neuroradiol.
Writing – review & editing: Xin Liu, Dhanjoo Ghista 2016;37(11):2026-2032.

Volume 2 Issue 2 (2024) 10 doi: 10.36922/bh.2756