Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/52813

TítuloA dual-modal CT/US kidney phantom model for image-guided percutaneous renal access
Autor(es)Fonseca, João Luís Gomes
Miranda, Alice Augusta Macedo
Morais, Pedro
Queirós, Sandro Filipe Monteiro
Pinho, A. C. Marques
Fonseca, Jaime C.
Correia-Pinto, Jorge
Lima, Estêvão Augusto Rodrigues de
Vilaça, João L.
Palavras-chaveImage-guided interventions
Kidney
Percutaneous renal access
Porcine phantom
Data2018
EditoraSpringer
RevistaLecture Notes in Computational Vision and Biomechanics
Resumo(s)Percutaneous renal access (PRA) is a crucial step in some minimally invasive kidney interventions. During this step, the surgeon inserts a needle through the skin until the kidney target site using fluoroscopy and ultrasound imaging. Recently, new concepts of enhanced image-guided interventions have been introduced in these interventions. However, their validation remains a challenging task. Phantom models have been presented to solve such challenge, using realistic anatomies in a controlled environment. In this work, we evaluate the accuracy of a porcine kidney phantom for validation of novel dual-modal computed tomography (CT)/ultrasound (US) image-guided strategies for PRA. A porcine kidney was combined with a tissue mimicking material (TMM) and implanted fiducial markers (FM). While the TMM mimics the surrounding tissues, the FM are used to accurately assess the registration errors between the US and CT images, providing a valid ground-truth. US and CT image acquisitions of the phantom model were performed and the FM were manually selected on both images. A rigid alignment was performed between the selected FM, presenting a root-mean-square error of 1.1 mm. Moreover, the kidney was manually segmented, presenting volumes of 203 ml and 238 ml for CT and US, respectively. The initial results are promising on achieving a realistic kidney phantom model to develop new strategies for PRA, but further work to improve the manufacturing process and to introduce motion and anatomical artifacts in the phantom is still required.
TipoconferencePaper
URIhttp://hdl.handle.net/1822/52813
ISBN978-3-319-68194-8
e-ISBN978-3-319-68195-5
DOI10.1007/978-3-319-68195-5_42
ISSN2212-9391
Arbitragem científicayes
AcessoopenAccess
Aparece nas coleções:DEI - Artigos em atas de congressos internacionais

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
00270042.pdf5,24 MBAdobe PDFVer/Abrir

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu Currículo DeGóis