Relation between bilateral differences in internal jugular vein caliber and flow patterns of dural venous sinuses

Sawamoto, Kazunobu; Tsurumoto, Toshiyuki; Okamoto, Keishi; Wakebe, Tetsuaki

doi:10.1007/s12565-013-0176-z

Cited by 24 publications

(20 citation statements)

References 25 publications

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“…Diameters of TS and IJV are larger at the side into which SSS is dominantly drained. [18] Right TS and left TS dominance percentages were reported to be 33-59 and 8-36%, while reported codominance varied from 8 to 49%. [5,10,[19][20][21][22][23] Similar to many studies in the literature, TS diameters determined by 3D SPGR MRV were dominant on the right in 42.72% of the cases, on the left in 19.09% and codominant in 38.18% of the cases in the present study.…”

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of dural venous sinuses and cerebral veins using contrast-enhanced spoiled gradient recalled echo and time-of-flight magnetic resonance venography

Deniz¹,

Gökçe

Acu

et al. 2019

Journal of Contemporary Medicine

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Introduction: In the present study, dural venous sinuses and cerebral veins were examined using contrast-enhanced spoiled gradient recalled echo (3D SPGR MRV) and time-of-flight magnetic resonance venography (2D TOF MRV). These methods were compared in terms of detectability of venous structures and their diameters. Methods: A total of 110 patients (66 female and 44 male) who had contrastenhanced 3D SPGR MRV and 2D TOF MRV examinations using a 1.5 T MRI machine in May 2008-June 2011 period were included in the present study. Diameters of dural venous sinuses and veins were measured at three different planes at a position 1cm distal to the site they drained into, and average values were used. Both MRV methods were compared to reveal whether the diameters calculated were different in age groups and between genders. Results: Superior sagittal sinus (SSS), bilateral transverse sinuses (TS), right sigmoid sinus, Galen vein and bilateral internal cerebral veins (ICV) all could be determined using 3D SPGR MRV. Not all dural venous sinuses and veins (excluded right sigmoid sinus) could be visualized in all patients on 2D TOF MRV. There were significant differences between the two examinations for SSS and inferior sagittal sinus, bilateral TS and sigmoid sinuses, straight sinus, bilateral Labbe and ICV and Galen vein diameters (p<0.05) Diameters of dural venous sinuses and cortical veins were generally measured larger by 3D SPGR MRV compared to 2D TOF MRV. Discussion and Conclusion: In conclusion, differences could be observed between the two MRV examinations for detectability and diameters of intracranial venous structures. Evaluation of intracranial venous structures should not be carried out using only 2D TOF MRV.

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Section: Discussionmentioning

confidence: 99%

Comparative evaluation of dural venous sinuses and cerebral veins using contrast-enhanced spoiled gradient recalled echo and time-of-flight magnetic resonance venography

Deniz¹,

Gökçe

Acu

et al. 2019

Journal of Contemporary Medicine

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“…The IJV dimensions were significantly larger on the right side and further from the baseline values five minutes after RCC removal, suggesting an uneven distribution of flow between the two sides. Previous research has shown the right IJV to have greater CSA and circumference compared to the left (Tartière et al, ) due to a greater proportion of the superior sagittal sinus draining into the right transverse sinus and thence via the right sigmoid sinus to the IJV (Saiki et al, ). An obstruction causing back‐up in the jugular veins may result in increased pooling in the right IJV due to its greater dimensions, requiring more time to return to baseline values.…”

Section: Discussionmentioning

confidence: 98%

Investigating the time‐lapsed effects of rigid cervical collars on the dimensions of the internal jugular vein

et al. 2018

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Protocol advocates the use of rigid cervical collars (RCCs) in head trauma patients as they are at risk of concomitant cervical spine injury. Literature has shown RCCs to be a potential cause of venous outflow obstruction, changing internal jugular vein (IJV) cross-sectional area (CSA), and raising intracranial pressure (ICP). This study aims to investigate the effects of applying a RCC, for a period of four hours, on the dimensions of the IJV, in healthy participants. Seventeen participants (nine male, eight female) took part in this study. Circumference and CSAs of the IJV were measured bilaterally by a single observer using a GE LOGIQ e ultrasound system. Measurements were taken pre-RCC application, immediately after, every hour over four hours, and five minutes postcollar removal. The CSA of the IJV was 8.3 ±6.0 mm pre-RCC application. The CSA of the IJV doubled (18.92 ±10.55 mm ) after four hours and decreased back to 9.36 ±6.8 mm five minutes postcollar removal. The circumference of the IJV was 17.29 ±6.03 mm pre-RCC application, increasing to 20.34 ±5.59 mm by the end of the fourth hour and returning to 16.14 ±5.16 mm five minutes postcollar removal. Related-samples Friedman's ANOVA test showed statistically significant differences for both left and right CSAs and circumferences of the IJV measured across the four hours (P-value<0.05). Ultrasound assessment of CSA of the IJV may correlate with changes in ICP. Further studies may provide insight into the effects of collar design, and guide future trauma protocol to minimize intracranial pressure fluctuations. Clin. Anat., 2018. © 2018 Wiley Periodicals, Inc.

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“…However an investigation of 110 adult cadavers found the opposite -a (small) bias 561 towards the right TS being larger -a finding that has been replicated recently [54,55]. 562 Together this suggests that a strong association between hV4 map coverage and venous 563 anatomy is yet to be consolidated and further work in this area is required.…”

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confidence: 93%

“…Given that the TS and large surface veins 525 in general give rise to the venous eclipse, consideration is due to the physical anatomy 526 of veins in the occipital cortex. Individual variations exist at the torcular Herophili (tH; 527 the confluence of sinuses at the occipital pole) [54,55], where variations are separated 528 into three broad categories, depicted in Fig 10. Of particular note is the Type 1 where 529 there is an absence of a confluence, and the right and left transverse sinuses connect to 530 only one of the Superior Sagittal Sinus (SSS) and Straight Sinus (SS) [54,55] (see 'Type 531 1' in Fig 10). the Superior Sagittal Sinus connects to one Transverse Sinus, and the Straight Sinus to 535 the other, with the two TSs completely separate from one another.…”

mentioning

confidence: 99%

Vascular effects on the BOLD response and the retinotopic mapping of hV4

Taylor

Puckett

Isherwood

et al. 2018

Preprint

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Despite general acceptance that the retinotopic organisation of human V4 (hV4) takes the form of a single, uninterrupted ventral hemifield, measured retinotopic maps of this visual area are often incomplete. Here, we test hypotheses that artefact from draining veins close to hV4 cause inverted BOLD responses that may serve to obscure a portion of the lower visual quarterfield -including the lower vertical meridian -in some hemispheres. We further test whether correcting such responses can restore the 'missing' retinotopic coverage in hV4. Subjects (N=11) viewed bowtie, ring, drifting bar and full field flash stimuli. Functional EPIs were acquired over approximately 1.5h and analysed to reveal retinotopic maps of early visual cortex, including hV4. Normalised mean maps (which show the average EPI signal amplitude) were constructed by voxel-wise averaging of the EPI time course and used to locate venous eclipses, which can be identified by a decrease in the EPI signal caused by deoxygenated blood. Inverted responses are shown to cluster in these regions, and correcting these responses improves maps of hV4 in some hemispheres, including restoring a complete hemifield map in one. A leftwards bias was found in which 11/11 hV4 maps in the left hemisphere were classified as incomplete, while this was the case in only 3/11 right hemisphere maps. Incomplete hV4 maps did not correspond with venous artefact in many instances, with incomplete maps being present in the absence of a venous eclipse and complete maps coexisting with a proximate venous eclipse. We also show that mean maps of upper surfaces (near the boundary between cortical grey matter and CSF) provide highly detailed maps of veins on the cortical surface. Results suggest that venous eclipses and inverted voxels can explain some incomplete hV4 maps, but cannot explain the remainder nor the leftwards bias in hV4 coverage reported here. Introduction 1 Human visual cortex is comprised of multiple orderly visual areas which are functionally 2 and anatomically distinct from each other [1-4]. Many of these areas are organised 3 according to the principle of retinotopy, which is to say they are topographically 4 organised such that the spatial organisation of the retina, and therefore the visual field, 5 is mapped to the neurons of each area [5-7]. These retinotopic maps are highly 6 preserved across individuals and species, and hence the cortical organisation of visual 7 areas is unlikely to be random, but an integral part of visuo-cortical function [8-10]. It 8 PLOS 1/20is therefore important to determine the organisation and position of visual areas, as 9 these factors are central to our understanding of visual information processing. 10Functional magnetic resonance imaging (fMRI) is currently one of the most 11 well-suited and popular tools for studying visual areas in human visual cortex, due to its 12 safe and non-invasive nature; however, it is not without issue. The impact of veins on 13 the measured blood-oxygen-level dependent (BOLD) response in fMRI has been...

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Relation between bilateral differences in internal jugular vein caliber and flow patterns of dural venous sinuses

Cited by 24 publications

References 25 publications

Comparative evaluation of dural venous sinuses and cerebral veins using contrast-enhanced spoiled gradient recalled echo and time-of-flight magnetic resonance venography

Comparative evaluation of dural venous sinuses and cerebral veins using contrast-enhanced spoiled gradient recalled echo and time-of-flight magnetic resonance venography

Investigating the time‐lapsed effects of rigid cervical collars on the dimensions of the internal jugular vein

Vascular effects on the BOLD response and the retinotopic mapping of hV4

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