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==Planning==

In suspected '''cerebral venous sinus thrombosis (CVST)''', [[head CT]] venography (CTV), [[head MRI]] venography (MRV), and digital subtraction angiography (DSA) have similar accuracies in the diagnosis.<ref name=Medscape>{{cite web|url=https://emedicine.medscape.com/article/338750-overview|title=Brain Imaging in Venous Sinus Thrombosis|author=Mahesh R Patel}} Updated: Feb 25, 2018</ref> Main advantages of MRI include rapid image taking and not being contraindicated in patients with for example a pacemaker. MRV, on the other hand, has a greater sensitivity in detecting parenchymal lesions.<ref name=Medscape/> A study from India has suggested CTV as an initial investigation of suspected CVST, with MRV being the next step in patients with equivocal findings on the CTV.<ref name="pmid29322704">{{cite journal| author=Issar P, Chinna S, Issar SK| title=Evaluation of Cerebral Venous Thrombosis by CT, MRI and MR Venography. | journal=J Assoc Physicians India | year= 2017 | volume= 65 | issue= 11 | pages= 16-21 | pmid=29322704 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=29322704 }} </ref>