Abstract: A method includes manipulating a catheter, which includes an ultrasound transducer array, inside an organ of a patient so as to acquire ultrasound images of at least part of the organ. One or more reference positions are identified of one or more respective reference anatomical structures in or near the organ. The ultrasound images are annotated with annotations indicating the identified reference anatomical structures.

Abstract: A method includes calculating a medial-axis tree graph of a volume of an organ of a patient in a computerized anatomical map of the volume. A predefined number of major branches in the tree graph are identified. Using the identified major branches, one or more known anatomical opening regions of the volume are identified in the anatomical map.

Abstract: A method includes calculating a medial-axis tree graph of a volume of an organ of a patient in a computerized anatomical map of the volume. A predefined number of major branches in the tree graph are identified. Using the identified major branches, one or more known anatomical opening regions of the volume are identified in the anatomical map.

Abstract: A method, including receiving sets of signals during multiple cardiac cycles, each set indicating, for a probe inserted into a cardiac chamber, a 3D location of a distal end of the probe, electrical potentials measured at the location, and respective times during a given cycle when the potentials were measured. The received measurements and the respective times are compared to a first template for a sinus rhythm cycle and a second template for a non-sinus rhythm cycle so as to identify a sequence of cycles including consecutive first, second, and third cycles wherein the first and second cycles match the first template and the third cycle matches the second template. A physical map is generated based on the locations. Based on the received locations and corresponding potentials, an electroanatomic map including the local activation times for the non-sinus rhythm cycle overlaid on the physical map is rendered to a display.

Abstract: Cardiac catheterization is conducted with a probe having a plurality of sensors. The heart is displayed as a first graphic image. Signals from the sensors are processed according to a predefined algorithm to generate respective outputs, A region on the first graphic image that is less than all of the first graphic image is selected according to locations of the sensors, and values derived from outputs of the sensors are displayed on the selected region as a second graphic image. Thereafter, the second graphic image is removed and replaced by an updated version.

Abstract: A method includes receiving an anatomical map of at least a portion of a heart. Positions and respective electrocardiogram (ECG) signal amplitudes measured at the positions are received for at least a region of the anatomical map. The ECG signal amplitudes are interpolated to derive a surface representation of the ECG signal amplitudes over the region. The surface representation of the ECG signal amplitudes is presented overlaid on the anatomical map.

Abstract: A system and methods for automatically adjusting view angle when performing cardiac mapping and ablation are described herein. A three-dimensional (3D) map of a cardiac structure of a patient and a relative location (e.g., position and orientation) of a catheter within the cardiac structure may be displayed on a visual display device. According to an example procedure, the position and orientation of the tip of the catheter within the cardiac structure, and the current ablation target may be detected. A desired viewing angle of the ablation target may be known, determined, provided and/or learned through training sessions with the operator. The viewing angle of the 3D map of the cardiac structure may be automatically adjusted to correspond to the desired viewing angle using the known locations of the tip of the catheter and ablation target. Other details and procedures may be implemented, as described herein.

Abstract: A method, including receiving sets of signals during multiple cardiac cycles, each set indicating, for a probe inserted into a cardiac chamber, a 3D location of a distal end of the probe, electrical potentials measured at the location, and respective times during a given cycle when the potentials were measured. The received measurements and the respective times are compared to a first template for a sinus rhythm cycle and a second template for a non-sinus rhythm cycle so as to identify a sequence of cycles including consecutive first, second, and third cycles wherein the first and second cycles match the first template and the third cycle matches the second template. A physical map is generated based on the locations. Based on the received locations and corresponding potentials, an electroanatomic map including the local activation times for the non-sinus rhythm cycle overlaid on the physical map is rendered to a display.

Abstract: A method includes calculating a center-of-mass of a volume of an organ of a patient in a computerized anatomical map of the volume. A location is found on the anatomical map, on a surface of the volume, that is farthest from the center-of-mass. The location is identified as a known anatomical opening of the organ.

Abstract: A method includes receiving one or more signals indicative of a position of a distal-end assembly of a medical probe within an organ of a patient. Based on the received signals, an inner volume that is confined within the distal-end assembly is determined. An anatomical map of the organ is updated, to denote the inner volume of the distal-end assembly as belonging to an interior of the organ.

Abstract: In one embodiment, a cardiac mapping system includes a medical examination device to capture data over time at multiple sample locations over a surface of at least one chamber of a heart, a display screen, and processing circuitry to process the captured data to determine a description of a propagation of activation wavefronts associated with activation times over the surface of the at least one chamber of the heart, calculate activation wavefront propagation path traces wherein each path trace describes a point on one activation wavefront being propagated over the surface of the at least one chamber of the heart according to an advancement of the activation wavefront such that the path traces describe the propagation of different points according to corresponding activation wavefronts, prepare a visualization showing the path traces on a representation of the at least one chamber, and render the visualization to the display screen.

Abstract: A method includes receiving an anatomical map of at least a portion of a heart. Positions and respective electrocardiogram (ECG) signal amplitudes measured at the positions are received for at least a region of the anatomical map. The ECG signal amplitudes are interpolated to derive a surface representation of the ECG signal amplitudes over the region. The surface representation of the ECG signal amplitudes is presented overlaid on the anatomical map.

Abstract: One embodiment includes a medical system including electrodes configured for application to a body of a subject and configured to output signals in response to electrical activity of a heart of the subject, a display, and a processor configured to store a set of templates corresponding to different types of arrhythmia of the heart, apply the templates to the signals so as to associate one or more different temporal sections of the signals with respective ones of the types of arrhythmia, and render to the display a user interface screen including at least a part of the signals and graphical identifiers identifying the different temporal sections of at least the part of the signals with the respective ones of the types of arrhythmia with which they are associated.

Abstract: A system including a medical device to form a 3D image of an anatomical structure in a body of a living subject, a user interface including a display and an input device, and a processor to prepare a user interface screen presentation including a graphical representation of the anatomical structure based on the 3D image, generate a feature list of a plurality of features associated with the anatomical structure, each feature having a respective location, render the user interface screen presentation to the display showing a first view of the graphical representation, receive an input from the user interface selecting a feature from the list, and render the user interface screen presentation to the display showing the graphical representation of the anatomical structure being automatically rotated from the first view to a second view showing the selected feature at the respective location on the graphical representation.

Abstract: A system including a medical device to form a 3D image of an anatomical structure in a body of a living subject, a user interface including a display and an input device, and a processor to prepare a user interface screen presentation including a graphical representation of the anatomical structure based on the 3D image, generate a feature list of a plurality of features associated with the anatomical structure, each feature having a respective location, render the user interface screen presentation to the display showing a first view of the graphical representation, receive an input from the user interface selecting a feature from the list, and render the user interface screen presentation to the display showing the graphical representation of the anatomical structure being automatically rotated from the first view to a second view showing the selected feature at the respective location on the graphical representation.

Abstract: A method for improving visualization of at least a catheter in an organ of a patient, the method includes displaying a map of the organ, and at least a first visual marker overlaid on the map. A position, falling within the map, of a distal end of the catheter is received. Displayed on the map are (i) the distal end of the catheter in accordance with the received position, and (ii) instead of the first visual marker, at least a second visual marker, which increases visibility of at least one of the map and the distal end, relative to the first visual marker.

Abstract: In one embodiment, a cardiac mapping system includes a medical examination device to capture data over time at multiple sample locations over a surface of at least one chamber of a heart, a display screen, and processing circuitry to process the captured data to determine a description of a propagation of activation wavefronts associated with activation times over the surface of the at least one chamber of the heart, calculate activation wavefront propagation path traces wherein each path trace describes a point on one activation wavefront being propagated over the surface of the at least one chamber of the heart according to an advancement of the activation wavefront such that the path traces describe the propagation of different points according to corresponding activation wavefronts, prepare a visualization showing the path traces on a representation of the at least one chamber, and render the visualization to the display screen.

Abstract: Described embodiments include an apparatus that includes a display and processor. The processor is configured to receive, from a user, an input that indicates one or more points of interest on an electroanatomical map, of an anatomical surface, that is displayed on the display, and to superimpose on the map, in response to the input, a plurality of contours, each one of the contours being at a different respective geodesic distance, with respect to the surface, from the points of interest. Other embodiments are also described.

Abstract: A method includes calculating a center-of-mass of a volume of an organ of a patient in a computerized anatomical map of the volume. A location is found on the anatomical map, on a surface of the volume, that is farthest from the center-of-mass. The location is identified as a known anatomical opening of the organ.

Abstract: A system and methods for automatically adjusting view angle when performing cardiac mapping and ablation are described herein. A three-dimensional (3D) map of a cardiac structure of a patient and a relative location (e.g., position and orientation) of a catheter within the cardiac structure may be displayed on a visual display device. According to an example procedure, the position and orientation of the tip of the catheter within the cardiac structure, and the current ablation target may be detected. A desired viewing angle of the ablation target may be known, determined, provided and/or learned through training sessions with the operator. The viewing angle of the 3D map of the cardiac structure may be automatically adjusted to correspond to the desired viewing angle using the known locations of the tip of the catheter and ablation target. Other details and procedures may be implemented, as described herein.