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. 2021 Feb 6;18(7):1699–1710. doi: 10.7150/ijms.54891

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The anterior type of LDV. A, CTA and MIP show that the LDV (asterisk) drains into the TSV and courses posterolaterally. B, CTA and MIP show that the LDV (asterisk) drains into the confluence of the ASV and TSV. C, CTA and MIP show that the LDV (asterisk) drains into the ICV after the confluence of the ASV and TSV. D, CTA and MIP show that the LDV (asterisk) drains into the anterior half of the ICV (arrow). Abbreviations: ASV, anterior septal vein; CTA, computed tomography angiography; ICV, internal cerebral vein; LDV, lateral direct vein; MIP, maximum intensity projection; S-I, superior to inferior; SS, straight sinus; TSV, thalamostriate vein.