UK engineers develop tiny camera for imaging inside veins and arteries

The advanced imaging technology, called ‘Leap’, builds on the latest generation of sub-millimetre cameras developed by US firm Omnivision.

The camera is based on a so-called “chip-on-tip” architecture, in which the imaging sensor is located at the distal end of the endoscope, in contrast to traditional fibre bundles which transmit light to large, external processing towers.  The device features a 400 x 400 pixel image (0.16 megapixels) as a standard capability, which represents an order of magnitude improvement over standard fibre-optic angioscopes. Cambridge Consultants claims that the image processing technology could increase this resolution further to 1600 x 1600 pixels (2.6 megapixels). Meanwhile, deep learning techniques are used to enhance low resolution images without the blurring associated with traditional upscaling.

Current surgical endoscopes are not widely used in angioscopy due to poor flexibility, a limited field of view and low resolution.

At 1.35mm in diameter, the Leap early prototype is small and flexible enough for use in a procedure such as intracoronary angioscopy. The firm claims that the technology increases the information available to surgeons by enabling them to carry out tissue classification or direct imaging of non-standard vascular occlusions and that it could be paired with other technologies such as IVUS (Intravascular Ultrasound) and OCT (Optical Coherence Tomography) to enable enhanced diagnostic techniques during surgery.