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Ex-vivo study in nephroureterectomy specimens defining the role of 3-D upper urinary tract visualization using optical coherence tomography and endoluminal ultrasound.

Authors :
Bus MTJ
Cernohorsky P
de Bruin DM
Meijer SL
Streekstra GJ
Faber DJ
Kamphuis GM
Zondervan PJ
van Herk M
Laguna Pes MP
Grundeken MJ
Brandt MJ
de Reijke TM
de la Rosette JJMCH
van Leeuwen TG
Source :
Journal of medical imaging (Bellingham, Wash.) [J Med Imaging (Bellingham)] 2018 Jan; Vol. 5 (1), pp. 017001. Date of Electronic Publication: 2018 Feb 12.
Publication Year :
2018

Abstract

Minimal invasive endoscopic treatment for upper urinary tract urothelial carcinoma (UUT-UC) is advocated in patients with low-risk disease and limited tumor volume. Diagnostic ureterorenoscopy combined with biopsy is the diagnostic standard. This study aims to evaluate two alternative diagnostic techniques for UUT-UC: optical coherence tomography (OCT) and endoluminal ultrasound (ELUS). Following nephroureterectomy, OCT, ELUS, and computed tomography (CT) were performed of the complete nephroureterectomy specimen. Visualization software (AMIRA <superscript>®</superscript> ) was used for reconstruction and coregistration of CT, OCT, and ELUS. Finally, CT was used to obtain exact probe localization. Coregistered OCT and ELUS datasets were compared with histology. Coregistration with three-dimensional CT makes exact data matching possible in this ex-vivo setting to compare histology with OCT and ELUS. In OCT images of normal-appearing renal pelvis and ureter, urothelium, lamina propria, and muscularis were visible. With ELUS, all anatomical layers of the ureter could be distinguished, besides the urothelial layer. ELUS identified suspect lesions, although exact staging and differentiation between noninvasive and invasive lesions were not possible. OCT provides high-resolution imaging of normal ureter and ureter lesions. ELUS, however, is of limited value as it cannot differentiate between noninvasive and invasive tumors.

Details

Language :
English
ISSN :
2329-4302
Volume :
5
Issue :
1
Database :
MEDLINE
Journal :
Journal of medical imaging (Bellingham, Wash.)
Publication Type :
Academic Journal
Accession number :
29487884
Full Text :
https://doi.org/10.1117/1.JMI.5.1.017001