Digital signal processing in optical coherence tomography
Digital signal processing in optical coherence tomography
复制标题
光学相干断层扫描中的数字信号处理
DOI：
10.1117/12.274307
复制
发表时间：
1997
影响因子：
3.8
通讯作者：
J. Izatt
中科院分区：
文献类型：
--
作者：
M. Kulkarni;J. Izatt
Optical coherence tomography (OCT) is a novel medical imaging modality which utilizes coherence ranging to perform high resolution (approximately 10 micrometer) non-invasive sub- surface imaging of biostructures. We have developed an OCT system consisting of a low-coherence interferometer and a calibration interferometer allowing sub-micron interferogram acquisition accuracy. We propose some digital signal processing strategies for image enhancement in optical coherence tomography. A linear shift invariant system model is presented for describing coherent light-tissue interactions in optical coherence tomography. In this model, the electric field backscattered from a target specimen is treated as a convolution of the incident field and a postulated tissue impulse response which describes the profile of scattering sites within the specimen. Based on this model, a novel technique for enhancing the sharpness of optical coherence tomographic images of biological structures using digital deconvolution is demonstrated. Using this approach, resolution improvement by a factor of greater than 2.2 is achieved in the longitudinal direction.
影响因子：
1.7
作者：
Ripandelli, G;Coppe, A M;Stirpe, M
通讯作者：
Stirpe, M