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[Spiral computer tomography in the diagnosis of intracranial aneurysms].

In the last few years a significant advancement in radiological diagnostics has been made by the development of spiral computed tomographic technology. This technology, in comparison to conventional one, enables approach to isotropic imaging. In isotropic imaging spatial resolution is equal in all directions so it is the best possible way for getting the tridimensional images. These tridimensional images obtained by spiral computed tomography are of great importance for evaluation of anatomical details. Beside great speed and noninvasiveness, spiral scanner has capabilities for computed tomographic angiography. It means that spiral scanner depicts intracranial aneurysms with exceptional precision. This fact is of great value because the computed tomographic angiography, in some cases, can substitute completely the conventional angiography, which is an invasive method bearing risk. The sensitivity of computed tomographic angiography is around 88-96%--identical to magnetic resonance angiography. It is slightly higher or equal to conventional angiography, when intracranial aneurysms are concerned. Due to this reason the matter of algorithm of examination is imposed.