FocusDET, a new toolbox for SISCOM analysis. Evaluation of the registration accuracy using monte carlo simulation

Martí Fuster, B.; Esteban, Oscar; Planes Cid, X.; Aguiar, Pablo; Crespo, Cristina; Falcon, Carles; Wollny, Gert; Rubí Sureda, Sebastià; Setoain Perego, X.; Frangi Caregnato, A.F.; Ledesma Carbayo, María Jesús; Santos Lleo, Andres de; Pavía Segura, J. y Ros Puig, D. (2013). FocusDET, a new toolbox for SISCOM analysis. Evaluation of the registration accuracy using monte carlo simulation. "Neuroinformatics", v. 11 (n. 1); pp. 77-89. ISSN 1539-2791. https://doi.org/10.1007/s12021-012-9158-x.

Descripción

Título: FocusDET, a new toolbox for SISCOM analysis. Evaluation of the registration accuracy using monte carlo simulation
Autor/es:
  • Martí Fuster, B.
  • Esteban, Oscar
  • Planes Cid, X.
  • Aguiar, Pablo
  • Crespo, Cristina
  • Falcon, Carles
  • Wollny, Gert
  • Rubí Sureda, Sebastià
  • Setoain Perego, X.
  • Frangi Caregnato, A.F.
  • Ledesma Carbayo, María Jesús
  • Santos Lleo, Andres de
  • Pavía Segura, J.
  • Ros Puig, D.
Tipo de Documento: Artículo
Título de Revista/Publicación: Neuroinformatics
Fecha: Enero 2013
Volumen: 11
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Ingeniería Electrónica
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Subtraction of Ictal SPECT Co-registered to MRI (SISCOM) is an imaging technique used to localize the epileptogenic focus in patients with intractable partial epilepsy. The aim of this study was to determine the accuracy of registration algorithms involved in SISCOM analysis using FocusDET, a new user-friendly application. To this end, Monte Carlo simulation was employed to generate realistic SPECT studies. Simulated sinograms were reconstructed by using the Filtered BackProjection (FBP) algorithm and an Ordered Subsets Expectation Maximization (OSEM) reconstruction method that included compensation for all degradations. Registration errors in SPECT-SPECT and SPECT-MRI registration were evaluated by comparing the theoretical and actual transforms. Patient studies with well-localized epilepsy were also included in the registration assessment. Global registration errors including SPECT-SPECT and SPECT-MRI registration errors were less than 1.2 mm on average, exceeding the voxel size (3.32 mm) of SPECT studies in no case. Although images reconstructed using OSEM led to lower registration errors than images reconstructed with FBP, differences after using OSEM or FBP in reconstruction were less than 0.2 mm on average. This indicates that correction for degradations does not play a major role in the SISCOM process, thereby facilitating the application of the methodology in centers where OSEM is not implemented with correction of all degradations. These findings together with those obtained by clinicians from patients via MRI, interictal and ictal SPECT and video-EEG, show that FocusDET is a robust application for performing SISCOM analysis in clinical practice.

Más información

ID de Registro: 26814
Identificador DC: http://oa.upm.es/26814/
Identificador OAI: oai:oa.upm.es:26814
Identificador DOI: 10.1007/s12021-012-9158-x
URL Oficial: http://link.springer.com/journal/12021/11/1/page/1
Depositado por: Memoria Investigacion
Depositado el: 31 May 2014 11:03
Ultima Modificación: 25 May 2015 14:45
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