IMAGERIE ACOUSTIQUE ET OPTIQUE DES MILIEUX BIOLOGIQUES OPTICAL AND ACOUSTICAL IMAGING OF BIOLOGICAL MEDIA Optical coherence tomography

نویسنده

  • James G. FUJIMOTO
چکیده

Optical Coherence Tomography (OCT) is a new technology for performing high-resolution cross sectional imaging. OCT is analogous to ultrasound imaging, except that it uses light instead of sound. OCT can provide cross sectional images of tissue structure on the micron scale in situ and in real time. OCT functions as a type of optical biopsy and is a powerful imaging technology for medical diagnostics because unlike conventional histopathology which requires removal of a tissue specimen and processing for microscopic examination, OCT can provide images of tissue in situ and in real time. OCT can be used where standard excisional biopsy is hazardous or impossible, to reduce sampling errors associated with excisional biopsy, and to guide interventional procedures.  2001 Académie des sciences/Éditions scientifiques et médicales Elsevier SAS OCT / tomography / optical biopsy / biological tissues Tomographie de coherence optique Résumé. La tomographie de cohérence optique (OCT) est une nouvelle technique pour obtenir des coupes à haute résolution. L’OCT est l’analogue de l’imagerie ultrasonore si ce n’est qu’elle utilise de la lumière à la place des sons. L’OCT est capable de fournir des images en coupes de la structure des tissus, in situ, en temps réel. L’OCT joue le rôle d’une biopsie optique et constitue une méthode puissante d’imagerie pour le diagnostic médical. En effet, à la différence de l’histopathologie conventionnelle qui impose l’ablation d’un échantillon de tissus et sa préparation pour l’examen microscopique, l’OCT peut fournir des images des tissus, in situ et en temps réel. L’OCT peut être utilisée dans des cas où la biopsie par excision est dangereuse ou impossible, pour réduire les erreurs d’échantillonnage de cette biopsie et pour guider les interventions.  2001 Académie des sciences/Éditions scientifiques et médicales Elsevier SAS OCT / tomographie / biopsie optique / tissus biologiques

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

IMAGERIE ACOUSTIQUE ET OPTIQUE DES MILIEUX BIOLOGIQUES OPTICAL AND ACOUSTICAL IMAGING OF BIOLOGICAL MEDIA 3D acousto-optic modulated-speckle imaging in biological tissues

A parallel, 64K-channel implementation of the acousto-optic method of imaging optical contrasts buried in organs is presented. This implementation also associates this method with echography in a single apparatus. This allows us to prove that sensitivity to purely optical contrast is achieved. Moreover, this enables any potential user to distinguish easily optical contrast, acoustic contrast, a...

متن کامل

IMAGERIE ACOUSTIQUE ET OPTIQUE DES MILIEUX BIOLOGIQUES OPTICAL AND ACOUSTICAL IMAGING OF BIOLOGICAL MEDIA Elastography

We present a concise summary of some of the fundamentals and of our work in the field of elastography over the past 12 years. This summary is not exhaustive, since several recent reviews of this area are available. We begin by presenting some relevant background material from the field of biomechanics, which forms the foundation of this work. We then proceed to discuss the basic principles and ...

متن کامل

IMAGERIE ACOUSTIQUE ET OPTIQUE DES MILIEUX BIOLOGIQUES OPTICAL AND ACOUSTICAL IMAGING OF BIOLOGICAL MEDIA Tissue harmonic ultrasonic imaging

Harmonic imaging was originally developed for microbubble contrast agents in the early 90s under the assumption that tissue is linear and all harmonic echoes are generated by the bubbles. In fact, tissue, like bubbles, is a nonlinear medium. Whereas the harmonic echoes from bubbles have their origins in nonlinear scattering, those from tissue are a result of nonlinear propagation. The clinical ...

متن کامل

Photoacoustic imaging platforms for multimodal imaging

Photoacoustic (PA) imaging is a hybrid biomedical imaging method that exploits both acoustical Epub ahead of print and optical properties and can provide both functional and structural information. Therefore, PA imaging can complement other imaging methods, such as ultrasound imaging, fluorescence imaging, optical coherence tomography, and multi-photon microscopy. This article reviews technique...

متن کامل

Ultrasound induced improvement in optical coherence tomography (OCT) resolution.

Optical coherence tomography (OCT) is a rapidly emerging technology for high-resolution biomedical imaging. The axial resolution of this technology is determined by the bandwidth of the source. Commercial sources generally provide resolutions of 10-20 microm whereas laboratory-based solid state lasers have resolutions of approximately 4 microm. The resolution in tissue depends almost exclusivel...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2001