It’s possible to early diagnose cerebral venous thrombosis (CVT) by use of CT, MRI and cerebral angiography. Due to its sensitivity MRI scan has become the method of choice in the assessment of suspect CVT. We report three cases of CVT in female 19, 24 and 45 years old. The first had partial thrombosis of posterior portions of sagittal sinus and ischemic lesion in capsule interne. The second was diagnosed with partial thrombosis in both transversal sinuses, in the confluence of the sinuses, beginning of sinus rectus and terminal sagittal sinus. The third patient had partial thrombosis in right transversal sinus and consecutive venous infarction in medial temporal gyrus and temporo-basilar cortex. Reduced anti-thrombin III levels in one patient seemed like a possible etiological factor. The other two only reported use of oral contraceptives. All patients received anti-coagulant treatment. The course was mild and outcome encouraging.