Das intraoperative CT

Ein automatisches Registrierungsverfahren für intraoperative CT-Bilddaten

Comparison of Preoperative Temporal Bone CT with Intraoperative Findings in Patients with Cholesteatoma

Introduction: Cholesteatoma is traditionally diagnosed by otoscopic examination and treated by surgery. The necessity for imaging in an uncomplicated case is controversial. This study was planned to investigate the usefulness of a preoperative high-resolution computed tomography (HRCT) scan in depicting the status of middle ear structures in the presence of cholesteatoma and also to compare the...

Intraoperative Computed Tomography (CT) for Treating Giant Carotid Intracavernous Aneurysms

BACKGROUND Giant carotid intracavernous aneurysm refers to those lesions larger than 2.5 cm and derived from a cavernous segment, accounting for about 30% of all intracranial tumors. Dynamic CT perfusion imaging (PCT) is a common method recently employed to evaluate cerebral perfusion. This study investigated the efficacy and clinical application of intraoperative CT in the surgery for giant sy...

Characterization of intracranial neoplasms by CT and intraoperative sonography.

Twenty-one adult male patients with 24 intracranial neoplasms were studied with intraoperative sonography and preoperative computed tomography (CT). Both methods defined the lesions, but the characteristic appearances were different. Sonography was more effective than CT in determining whether a lesion was cystic, with or without septations, or solid. Most importantly, sonography was an intraop...

Intraoperative cone-beam CT for guidance of temporal bone surgery.

OBJECTIVES To describe our preclinical experience with Cone Beam CT (CBCT) in image-guided surgery of the temporal bone. STUDY DESIGN AND SETTINGS A mobile isocentric C-arm (PowerMobil, Siemens Medical Systems, Erlangen, Germany) modified to include a flat-panel detector (Varian Imaging Products, Palo Alto, CA) and a motorized orbit was developed to acquire multiple projections in rotation ab...