Flat panel detector -CT with endovenous injection. Description of a novel technique for obtaining cerebral arteries imaging: Technical note

Introduction The diagnosis and management of cerebral vascular disease has improved due to the constant development of imaging techniques. Digital subtraction angiography (DSA) is the gold standard, but still involves high cost and risk (1). The certainty of the images obtained by noninvasive methods currently has facilitated the identification of therapeutic surgical or endovascular decisions in many centers of the world regardless of the ASD. At other times, the CT angiography is useful as a tool for control and monitoring in patients already treated (2–6), however it is still ineffective for proper evaluation of intra-stent stenosis (7–9). The flat-panel detector CT (FPDCT) is a relatively new technology that provides extremely useful images in cerebral vascular disease, especially for its ability to show relationships between soft tissue and bone, detect complications during the procedure, display of intra and extracranial coils and stents, however it require the intraarterial injection of contrast material (10–12). There are few articles that show the intravenous injection technique for FPDCT. n this paper we show a novel technique developed at the National Institute of Neurology and Neurosurgery for imaging with intravenous injection. Equipment: We used a biplane system C-arm with flat detector angiography, AXIOM Artis dBA (Siemens, Erlangen, Germany) with a system of dynamic imaging plane detector with high spatial resolution and contrast resolution of 14 bits, detector input plane 30 x 40 (48 cm diagonal) with a pixel size of 154 um and input level detector 20 x 20 (25 cm diagonal) with a pixel size of 184 um, with acquisition of DSA images in real time with up to 7.5 imag./s, 10, 15, January 30 imag. / s in biplane in 1024 x 1024 matrix