Abstract: The invention discloses a device (1) for characterizing in real time the actimetry of a subject, having: a radar (2) emitting and receiving radar signals, and having a software interface for configuring the shape of the signal emitted; processing and computing means (3) coupled to the radar (2), having a trained classifier (3a) using a database, said processing and computing means (3) being configured to perform in real time: —a capture of color micro-Doppler images (6) having several color channels (R, V, B), each having micro-Doppler signatures (6a) with color pixels the value of which is a function of a reflectivity and a speed of the subject; —a processing of the micro-Doppler images (6) for: computing a so-called monochromatic image having monochromatic pixels, each having a given monochromatic intensity, on the basis of the color pixels of each color micro-Doppler image; transforming the monochromatic image into a binary image by segmentation, according to a binary luminous intensity threshold, of the m

Abstract: A method for performing real-time detection and displaying of polyps in optical colonoscopy, includes a) acquiring and displaying a plurality of real-time images within colon regions to a video stream frame rate, each real-time image comprising a plurality of color channels; b) selecting one single color channel per real-time image for obtaining single color pixels; c) scanning the single color pixels across each the real-time image with a sliding sub-window; d) for each position of the sliding sub-window, extracting a plurality of single color pixels local features of the real-time image; e) passing the extracted single color pixels local features of the real-time image through a classifier to determine if a polyp is present within the sliding sub-window; f) real-time framing on display of colon regions corresponding to positions of the sliding sub-window wherein polyps are detected. A system for carrying out such a method is also provided.

Abstract: A method for performing real-time detection and displaying of polyps in optical colonoscopy, includes a) acquiring and displaying a plurality of real-time images within colon regions to a video stream frame rate, each real-time image comprising a plurality of color channels; b) selecting one single color channel per real-time image for obtaining single color pixels; c) scanning the single color pixels across each the real-time image with a sliding sub-window; d) for each position of the sliding sub-window, extracting a plurality of single color pixels local features of the real-time image; e) passing the extracted single color pixels local features of the real-time image through a classifier to determine if a polyp is present within the sliding sub-window; f) real-time framing on display of colon regions corresponding to positions of the sliding sub-window wherein polyps are detected. A system for carrying out such a method is also provided.

Abstract: In the receive subsystem, the analogue-to-digital converter (40) works on the output of the low-noise amplifier (33), at a chosen rate (F), which corresponds to a bandwidth sampling. The processing stages comprise a custom circuit (5), with * an input memory (510) arranged to contain N successive digital samples, renewed at the chosen rate in blocks of M samples, * a complex digital low-pass filtering function (511, 512), of chosen cut-off frequency, operating on the input memory to supply N filtered digital samples (515), * an M-periodic summing function (531) on the N filtered digital samples, supplying M filtered and summed digital samples (533), * an M?M discrete Fourier transform stage (55), operating on these M filtered and summed digital samples, the digital signals on the M outputs (559) of the Fourier transform representing M separate channels, of width defined by the cut-off frequency of the abovementioned low-pass filter.

Abstract: The endoprosthesis is designed to be implanted in an aneurysm (12) of a patient, the aneurysm (12) resulting from deformation of a vessel wall, in particular the wall of an artery (14), the endoprosthesis including: a tubular envelope (22, 24) that extends in a direction (Y-Y?), and a plurality of pressure probes (26) fixed on the envelope (22, 24), each probe (26) including: a sensor (28) for measuring pressure, and elements (34, 36) for transmitting the pressure measurement to a monitoring apparatus located outside the patient. The elements (34, 36) for transmitting the pressure measurement from each probe (26) are designed to generate an electromagnetic pressure measurement transmission signal including at least one distinctive characteristic of the probe (26) of which these elements (34, 36) form part.

Abstract: In the receive subsystem, the analogue-to-digital converter (40) works on the output of the low-noise amplifier (33), at a chosen rate (F), which corresponds to a bandwidth sampling. The processing stages comprise a custom circuit (5) with * an input memory (510) arranged to contain N successive digital samples, renewed at the chosen rate in blocks of M samples, * a complex digital low-pass filtering function (511, 512), of chosen cut-off frequency, operating on the input memory to supply N filtered digital samples, * an M-periodic summing function (531) on the N filtered digital samples, supplying M filtered and summed digital samples (533), * an M1M discrete Fourier transform stage (55), operating on these M filtered and summed digital samples, the digital signals on the M outputs (559) of the Fourier transform representing M separate channels, of width defined by the cut-off frequency of the abovementioned low-pass filter.

Abstract: The endoprosthesis is designed to be implanted in an aneurysm (12) of a patient, the aneurysm (12) resulting from deformation of a vessel wall, in particular the wall of an artery (14), the endoprosthesis including: a tubular envelope (22, 24) that extends in a direction (Y-Y'), and a plurality of pressure probes (26) fixed on the envelope (22, 24), each probe (26) including: a sensor (28) for measuring pressure, and elements (34, 36) for transmitting the pressure measurement to a monitoring apparatus located outside the patient. The elements (34, 36) for transmitting the pressure measurement from each probe (26) are designed to generate an electromagnetic pressure measurement transmission signal including at least one distinctive characteristic of the probe (26) of which these elements (34, 36) form part.