Dr Rehman Ansari

UCL Postdoctoral Research Associate

Rehman Ansari is a post-doctoral research associate in the Photoacoustic Imaging Group in the Department of Medical Physics and Biomedical Engineering, University College London. He received a Master’s degree in Biomedical Engineering from New York University School of Engineering, New York. He obtained his PhD from the University of Luebeck, Germany, where his research focus was on development of phase sensitive optical coherence microscopy systems, and its applications in medicine and life sciences.

GIFT-Surg focus

Rehman is working on the development of miniaturized photoacoustic endoscopy probes for guiding fetal interventional procedures. Photoacoustic tomography is particularly well suited for visualising the structure and function of the vasculature, as it provides selective absorption contrast. The goal is to develop all-optical, forward and side-viewing miniaturized 3D imaging probes using coherent fibre bundles and Fabry-Pérot (FP) ultrasound sensors. The fibre bundle comprises several thousand elements, which have micron-scale diameters, and illuminates the FP sensor which is deposited at the distal end. In this way, the FP sensor acts as a 2D array of ultrasound detectors at the tip of the bundle. This new approach to photoacoustic endoscopy offers several advantages over previous distal-end scanning probes. These include a high degree of miniaturisation, no moving parts at the distal end and the potential for relatively simple and inexpensive fabrication.

Previous (Investigators)                                                                                                                                                      Next