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Normal vascular imaging
  1. Shelley A Renowden
  1. Correspondence to Dr Shelley A Renowden, Department of Neuroradiology, Frenchay Hospital, Clinical Support Services Directorate, Bristol BS16 1LE, UK; shelley.renowden{at}north-bristol.swest.nhs.uk

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Angiographic detail of the intracranial and spinal circulation may be obtained by CT and MR techniques. However, digital subtraction angiography (DSA) remains the gold standard because of its superior spatial and temporal resolution (time resolved MR and CT techniques are available). The clinical indications for the various angiographic techniques are given in the figures 1–7.

Figure 1

CT venography: sagittal (a) and sagittal oblique (b) projections: indicated in the investigation of venous sinus thrombosis/occlusive disease and idiopathic intracranial hypertension (assess ‘stenoses’ at transverse sinus/sigmoid junctions and their response to lumbar puncture). CT venography …

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