Background. We studied the role of pulmonary veins in cancer progression using computed tomography (CT) scans. Methods. We obtained data from 260 patients with pulmonary vein obstruction syndrome (PVOS). We used CT scans to investigate pulmonary lesions in relation to pulmonary veins. We divided the lesions into central and peripheral lesions by their anatomical location: in the lung parenchyma...

Venous drainage patterns at the craniocervical junction and skull base have been thoroughly described in the radiographic literature. The facial veins and their important anastomoses with the intracranial venous system are less well appreciated. This study of 54 consecutive normal cerebral angiograms demonstrates that visualization of the pterygoid plexus as well as the anterior facial, lingual...

BACKGROUND Massive bilateral infarcts due to deep venous system thrombosis are extremely rare and poorly documented. We present a case with computed tomographic evidence of both thrombosis and infarction of the whole deep venous system. CASE DESCRIPTION A previously healthy 30-year-old woman who had taken oral contraceptives for 3 years complained of recurrent headaches and transient visual o...

Isolated cortical vein thrombosis (ICVT) is extremely rare. Only single case or small series of ICVT have been reported; clinical details are still uncertain. We report a case of isolated superficial sylvian vein thrombosis with exceedingly long cord sign. A 14-year-old female with severe sudden onset headache visited our hospital. Fluid attenuated inversion recovery and echo-planar T2(*) susce...

PURPOSE To demonstrate acquisition and processing methods for quantitative oxygenation venograms that map in vivo oxygen saturation (SvO2 ) along cerebral venous vasculature. METHODS Regularized quantitative susceptibility mapping (QSM) is used to reconstruct susceptibility values and estimate SvO2 in veins. QSM with ℓ1 and ℓ2 regularization are compared in numerical simulations of vessel str...

Introduction: The cerebral vascular architecture and in particular the geometrical relationship between pathologies and blood vessels are of tremendous diagnostic and therapeutic interest [1]. In particular, veins on the brain's surface can be used as landmarks since the spatial relationship between sulci and blood vessels is not altered by brain edema-shrinkage, or brain shift during surgery [...

Cerebral A rteriovenous Shunts Re-examined • Cerebral arteriovenous (A-V) shunts have been described in some histological studies, but their existence has been denied in others. Previous attempts to detect the presence and amount of A-V shunting using radioactive microspheres have suggested that large amounts of blood could bypass cerebral capillaries in this fashion. A reappraisal seemed indic...

Background Cerebral arteriovenous malformations (AVMs) are congenital vascular lesions with dilated feeding arteries and draining veins without an intervening capillary bed. Treatment is recommended for most patients because of the risk of hemorrhage, which largely dependent on the imaging information available before treatment. Objective The aim was to assess the value of three-dimensional con...

so that specific treatment can be started. The cord sign (hyperdense thrombosed veins on unenhanced CT) and the empty-delta sign (a filling defect in the superior sagittal sinus on enhanced CT) are considered pathognomonic for SVT. REFERENCES 1. Haage P, Krings T, Schmitz-Rode T. Non traumatic vascular emergencies: imaging and intervention in acute venous occlusion. A two-year-old girl presente...

BACKGROUND AND PURPOSE MR venography is often used to examine the intracranial venous system, particularly in the evaluation of dural sinus thrombosis. The purpose of this study was to evaluate the use of MR venography in the depiction of the normal intracranial venous anatomy and its variants, to assess its potential pitfalls in the diagnosis of dural venous sinus thrombosis, and to compare th...