[Flat-detector computed tomography in diagnostic and interventional neuroradiology].
Originally aimed at improving standard radiography by providing higher absorption efficiency and a wider dynamic range than available with film-screen and phosphor luminescence, radiography flat detector technology is now widely accepted for neuroangiographic imaging. Especially flat-detector computed tomography (FD-CT), which uses rotational C-arm mounted flat-panel detector technology, is capable of volumetric imaging with a high spatial resolution. As "angiographic CT" FD-CT may be helpful in many diagnostic and neurointerventional procedures, e.g. intracranial stenting for cerebrovascular stenoses, stent-assisted coil embolization of wide-necked cerebral aneurysms and embolization of arteriovenous malformations. By providing morphologic, CT-like images of the brain within the angiography suite FD-CT allows rapid visualization of periprocedural hemorrhaging and may thus improve rapid complication management without the need of patient transfer. In addition, myelography and postmyelographic FD-CT imaging can be carried out using a single modality. Spinal interventions, such as kyphoplasty or vertebroplasty might also benefit from FD-CT. Imaging of the temporal bone may also develop into an important field of FD-CT. This paper briefly reviews the technical principles of FD technology and the potential applications in diagnostic and interventional neuroradiology.
Struffert
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Abteilung für Neuroradiologie, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schwabachanlage 6, Erlangen. tobias.struffert@uk-erlangen.de
Doerfler
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D004867:Equipment Design; D019544:Equipment Failure Analysis; D021621:Imaging, Three-Dimensional / Q000379:methods*; D009485:Neuroradiography / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*; D015641:Radiography, Interventional / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*; D013673:Technology Assessment, Biomedical; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014159:Transducers