[Application 3D DSA and angiographic CT in interventional neuroradiology]

Abstract

Aim: Modern angiographs used in interventional neuroradiology are equipped with advanced imaging techniques like three-dimensional angiography (3D DSA) and Angiographic CT. The aim of this paper is presentation of application these methods based on our experience.

Method: Both method--Angiographic CT and 3D DSA--use "C" arm rotation technique around the patient. Obtained data are processed to three-dimensional images (in 3D DSA) or (in Angiographic CT) to computer tomography (CT)--like reconstruction: multiplanar (MPR), maximum intensity (MIP) and volume rendering (VR).

Discussion: Angiography 3D DSA is nowadays a basic method in diagnostics of cerebral aneurysms. Three-dimensional images allow for precise evaluation of the aneurysm, qualification for treatment, facilitate embolisation procedures and evaluation of efficiency of the treatment. Angiographic CT (like CT) allows for evaluation of the most important brain structures like: ventricular system, subarachnoid cisterns and less brain tissue. The main application of this technique is evaluation of endo-vascular procedures in respect of hemorrhagic complications. Possibility of quick imaging of the brain and detection of intracranial hematoma, intraventricular hemorrhage with developing hydrocephalus, brain edema, allows for immediately reaction.

Conclusion: 3D DSA and Angiographic CT are methods which in interventional neuroradiology make easier preparing the diagnosis of vascular pathologies and performing intravascular treatment. Angiographic CT allows for quick evaluation of potential complications after endovascular procedures without transfer patient outside angiographic room.