Sinus pericranii diagnosis
Ultrasound
Color Doppler may show communication with superficial veins and dural venous sinuses 1)
CT
Non contrast
slightly increased attenuation compared with brain parenchyma
may show an associated cranial vault defect
Post contrast
unless thrombosed, the abnormal communication between dural sinuses and the cranial vault will tend to enhance to the same degree as cerebral venous structures
MRI
Signal may vary due to slow flow. An abnormal communication between dural sinuses and the cranial vault is usually seen.
DSA
DSA can be helpful for definitive diagnosis and deciding treatment option, through analyzing venous flow dynamics and discovering the vascular nature.
Some authors recommend direct percutaneous venography as a confirmatory tool, however, it is associated with a high risk of bleeding and infarction 2).