A simplified method to integrate metabolic images in stereotactic procedures using a PET-CT scanner
| Autor: | Picozzi P. 1, Rizzo G. 3, Landoni C. 2, 4, Attuati L. 1, Franzin A. 1, Messa C. 2, 3, Ferrari da Passano C. 1, Bettinardi V. 2, Fazio F. 2 |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Stereotactic and functional neurosurgery 83 (2005): 208–212. info:cnr-pdr/source/autori:Picozzi P. 1, Rizzo G. 3, Landoni C. 2,4, Attuati L. 1, Franzin A. 1, Messa C. 2,3,4, Ferrari da Passano C. 1, Bettinardi V. 2, Fazio F. 2,3,4,/titolo:A simplified method to integrate metabolic images in stereotactic procedures using a PET-CT scanner/doi:/rivista:Stereotactic and functional neurosurgery/anno:2005/pagina_da:208/pagina_a:212/intervallo_pagine:208–212/volume:83 |
| Popis: | We have developed a method that needs only the computed tomography (CT) indicator box to coregister positron emission tomography (PET) images and integrates this information with magnetic resonance imaging. The study was performed using a PET/CT scanner. A standard CT bed adapter was attached to the scanner couch. Then, the patient, with the Leksell G frame fixed, was positioned into the scanner with the CT indicator box. PET images were acquired using either [18F]fluorodeoxyglucose or [11C]choline as radioisotopes. After acquisition, CT and PET images were exported in DICOM 3 standard and transferred to a dedicated workstation via data link. Homemade software was implemented for multimodal image fusion. PET images were overwritten to their corresponding CT point values using a threshold algorithm, maintaining the stereotactic CT markers. The use of a CT indicator simplifies the procedure, because there is no need for a radioactive solution filling the indicator box. This method was tested first using a phantom and then in patients. The localization accuracy of the PET images is limited only by the slice thickness. |
| Databáze: | OpenAIRE |
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