Computed tomography (CT) and intraarterial cerebral angiography are essential methods in early diagnosis of @entity2457 . In recent years however non-invasive or minimally invasive methods like MR angiography and CT angiography (CTA), which could potentially replace angiography, have been developed. The aim of presented study is to demonstrate our own experience in application of CTA in early diagnosis of @entity2457 . The material consists of 86 CTA examinations performed shortly after non-traumatic intracranial @entity548 . Angiographic correlation has been available in 23 @entity1 and surgical one--in 31 cases. CTA studies began with serio-CT to select the optimal time between contrast injection and CT scanning. After that 100-120 ml of non-ionic contrast medium was injected intravenously (5 ml per sec.) and spiral CT acqusition was performed with the delay calculated on the basis of the serio-CT. The obtained images were postprocessed on the workstation using always MIP and in many cases also SSD and VRT reconstructions. @entity1462 have been diagnosed in 44 of 86 CTA studies including 38 @entity1 with @entity439 (total number 51) and 6 @entity1 with AVMs. In 17 cases the diameter of the @entity439 did not exceed 5 mm. In all surgical cases the CTA diagnosis of the @entity439 has been confirmed. There was however one false-negative case. On the other hand in 7 @entity1 CTA revealed the small @entity439 , despite unclear angiographic appearance. In 2 of 6 @entity1 with CTA suspicion of @entity7026 this diagnosis has been excluded either by angiography or surgery. Comparison of CTA and angiography in 22 @entity439 showed in 17 cases superiority of CTA in evaluation of @entity439 and the relationship between @entity439 and adjacent vessels (especially with VRT and SSD reconstructions). In @entity1 with AVMs however the evaluation of supplying and draining vessels was better with angiography. On the base of our material we can conclude that CTA is very efficient in detecting and evaluating the @entity439 . We believe that CTA can replace angiography if it reveals @entity439 in a site corresponding with location of @entity548 on CT. In @entity1 with suspicion of @entity7026 value of CTA is doubtful and angiography remains the method of choice.

Our own experience with CT angiography in early diagnosis of XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity7026 :: ('MESH:D002538', 'Disease') :: ['AVM'] @entity548 :: ('MESH:D006470', 'Disease') :: ['haemorrhage'] @entity2457 :: ('MESH:D020785', 'Disease') :: ['cerebral vascular malformations'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'aneurysmal neck', 'aneurysm'] @entity1462 :: ('MESH:D054079', 'Disease') :: ['Vascular malformations']
@entity2457 :: (MESH:D020785,Disease) :: ['cerebral vascular malformations']
