A digital topographic model of the luminal surface is generated by projecting an optical pattern on the luminal surface from the first location within the lumen. At least a portion of the projected pattern is detected from a second location within the lumen which is based apart from the first location. The dimensions of the luminal wall can be measured by triangulation in order to produce the digital topographic model of the body lumen.

A fluid mechanics-based analysis tool is implemented to compute pressure field data, fluid velocity data, and/or muscular work data in a lumen or other tubular organ or structure from planimetry and pressure data (e.g., measured using a balloon dilation or other planimetry catheter). In this way, flow data can be estimated, which are otherwise insensible from current planimetry catheter technologies due to economic and/or manufacturing limitations.

A method of operating a surgical visualization system includes illuminating an anatomical field of a patient using a waveform transmitted by an emitter. The method also includes capturing an image of the anatomical field based on the waveform using a receiver. The emitter and the receiver are configured for multispectral imaging or hyperspectral imaging. The method also includes determining an adjustment to at one operating parameter of the surgical visualization system based on at least one environmental scene parameter. The method also includes automatically implementing the adjustment to the at least one operating parameter to aid in identification of at least one anatomical structure in the anatomical field.

An intubation assistance device includes an electronic controller configured to: generate a patient respiratory tract geometry model of at least a portion of a human respiratory tract by inputting one or more patient variables into a statistical shape model (SSM) of at least a portion of the human respiratory tract; select a recommended endotracheal tube (ETT) size by modeling at least one ETT model inserted into the patient respiratory tract geometry model to form a virtual fit model and estimating at least one fit parameter based on the virtual fit model; and display the recommended ETT size on a display device.

Introduced here are approaches to authenticating the identity of speakers based on the “liveness” of the input. To prevent spoofing, an authentication platform may establish the likelihood that a voice sample represents a recording of word(s) uttered by a speaker whose identity is to be authenticated and then, based on the likelihood, determine whether to authenticate the speaker.

A medical instrument includes a first device (108) including shape-sensed flexible instrument, a second device (102) disposed over the first device and a third device (109) disposed over the first device and a portion of the second device. The second and third devices include a geometric relationship such that a position of the second device and the third device is determined from shape sensing information of the first device and the geometric relationship.

The described technology generally includes systems and processes for a PD optimization process may operate to estimate, predict, or otherwise determine the value of PD dose variables values based on patient characteristics and/or PD prescription information. In one embodiment, a PD optimization process may be or may include a UFV determination process, operative to determine a predicted UFV for a patient. In some embodiments, the UFV determination process may include training a computational model to generate a predicted UFV output based on input of patient characteristics, PD prescription information, PD outcomes (for instance, UFV), and/or historical information associated with patient characteristics, PD prescription information, and/or PD outcomes. In some embodiments, a feedback control process with continuous Intraperitoneal Pressure (IPP) and hydration status measurements may be used to keep the hydration status of the patient within a target level ran. Other embodiments are described.

An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.

A joint replacement balancing system which provides real-time feedback to a surgeon during a joint replacement surgery to assist the surgeon to balance a joint replacement. The joint replacement balancing system includes a non-transitory processor-readable medium storing code representing instructions to cause a processor to receive a signal from a joint balancing apparatus, determine if the joint replacement is out of balance, determine a corrective course of action to bring the joint into balance and generate and display to the surgeon during the joint replacement surgery a recommended corrective course of action to complete the joint replacement surgery.

A device for measuring reflected ultrasound and optical signals may include: an optical source; an optical assembly comprising at least one lens, configured to focus reflected optical illumination from a target onto a detector; and an ultrasound transducer aligned to transmit and receive ultrasound radiation co-axially with the reflected optical illumination and wherein the ultrasound transducer at least partially obstructs a path of the reflected optical illumination. An obstruction may be distant from a focal spot of the optical assembly. The device for measuring reflected ultrasound and optical signals may be particularly useful for characterizing fluid behind an ear drum to diagnose otitis media.