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Proceedings Paper

Multispectral imaging fluorescence microscopy for lymphoid tissue analysis
Author(s): Monica Monici; Giovanni Agati; Franco Fusi; Piero Mazzinghi; Salvatore Romano; Riccardo Pratesi; Renato Alterini; Pietro Antonio Bernabei; Luigi Rigacci
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Paper Abstract

Multispectral imaging autofluorescence microscopy (MIAM) is used here for the analysis of lymphatic tissues. Lymph node biopsies, from patients with lympthoadenopathy of different origin have been examined. Natural fluorescence (NF) images of 3 micrometers sections were obtained using three filters peaked at 450, 550 and 680 nm with 50 nm bandpass. Monochrome images were combined together in a single RGB image. NF images of lymph node tissue sections show intense blue-green fluorescence of the connective stroma. Normal tissue shows follicles with faintly fluorescent lymphocytes, as expected fro the morphologic and functional characteristics of these cells. Other more fluorescent cells (e.g., plasma cells and macrophages) are evidenced. Intense green fluorescence if localized in the inner wall of the vessels. Tissues coming from patients affected by Hodgkin's lymphoma show spread fluorescence due to connective infiltration and no evidence of follicle organization. Brightly fluorescent large cells, presumably Hodgkin cells, are also observed. These results indicate that MIAM can discriminate between normal and pathological tissues on the basis of their natural fluorescence pattern, and, therefore, represent a potentially useful technique for diagnostic applications. Analysis of the fluorescence spectra of both normal and malignant lymphoid tissues resulted much less discriminatory than MIAM.

Paper Details

Date Published: 15 January 1999
PDF: 6 pages
Proc. SPIE 3570, Biomedical Sensors, Fibers, and Optical Delivery Systems, (15 January 1999); doi: 10.1117/12.336938
Show Author Affiliations
Monica Monici, Istituto di Elettronica Quantistica and Consorzio di Eccellenza Optronica (Italy)
Giovanni Agati, Istituto di Elettronica Quantistica (Italy)
Franco Fusi, Univ. degli Studi di Firenze (Italy)
Piero Mazzinghi, Istituto Nazionale di Ottica (Italy)
Salvatore Romano, Univ. degli Studi di Firenze (Italy)
Riccardo Pratesi, Univ. degli Studi di Firenze and Area della Ricerca di Firenze (Italy)
Renato Alterini, Policlinico di Careggi/Univ. degli Studi di Firenze (Italy)
Pietro Antonio Bernabei, Policlinico di Careggi/Univ. degli Studi di Firenze (Italy)
Luigi Rigacci, Policlinico di Careggi/Univ. degli Studi di Firenze (Italy)

Published in SPIE Proceedings Vol. 3570:
Biomedical Sensors, Fibers, and Optical Delivery Systems
Francesco Baldini; Nathan I. Croitoru; Martin Frenz; Ingemar Lundstroem; Mitsunobu Miyagi; Riccardo Pratesi; Otto S. Wolfbeis, Editor(s)

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