Abstract: A method of analyzing a hollow anatomical structure of interest for percutaneous implantation. The method comprises acquiring image data of an anatomical region of interest that includes the anatomical structure of interest, and generating a segmented model of the anatomical region of interest using the acquired image data. The method further comprises obtaining image(s) of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model thereof, identifying one or more pertinent landmarks of the anatomical structure of interest in the acquired image(s), and measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the acquired image(s) to determine an anatomical structure size. The method still further comprises reconciling the anatomical structure size and an implant size.

Abstract: A method for selecting a medical device for use in the performance of a medical procedure. The method comprises acquiring image data relating to an anatomical region of interest of a patient's body and generating a multi-dimensional depiction of the anatomical region of interest using the acquired image data. The method further comprises defining a plurality of points relative to the multi-dimensional depiction, determining one or more measurements based on the defined plurality of points, and then selecting a medical device to be used based on the determined measurements.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for evaluating placement of a prosthetic device. The method comprises designating a position in a depiction of an anatomical region that includes a first structure in which the device is to be placed, the depiction showing the first structure and/or a blood pool volume of a second structure, and wherein the designated position corresponds to a position in the first structure at which the device may be placed. The method further comprises defining a plane and offsetting a representation thereof to a point in the depiction(s) at which the device would intersect the blood pool volume if placed at the designated position. The method comprises manipulating the orientation and/or position of the offset representation and determining a cross-sectional area of the blood pool volume along the manipulated representation for evaluating obstruction through the second structure if the device was placed at a corresponding position in the first structure.

Abstract: A method of analyzing a hollow anatomical structure of interest for percutaneous implantation. The method comprises acquiring image data of an anatomical region of interest that includes the anatomical structure of interest, and generating a segmented model of the anatomical region of interest using the acquired image data. The method further comprises obtaining image(s) of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model thereof, identifying one or more pertinent landmarks of the anatomical structure of interest in the acquired image(s), and measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the acquired image(s) to determine an anatomical structure size. The method still further comprises reconciling the anatomical structure size and an implant size.

Abstract: A method for selecting a medical device for use in the performance of a medical procedure. The method comprises acquiring image data relating to an anatomical region of interest of a patient's body and generating a multi-dimensional depiction of the anatomical region of interest using the acquired image data. The method further comprises defining a plurality of points relative to the multi-dimensional depiction, determining one or more measurements based on the defined plurality of points, and then selecting a medical device to be used based on the determined measurements.

Abstract: A method of analyzing a hollow anatomical structure of interest for percutaneous implantation. The method comprises acquiring image data of an anatomical region of interest that includes the anatomical structure of interest, and generating a segmented model of the anatomical region of interest using the acquired image data. The method further comprises obtaining image(s) of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model thereof, identifying one or more pertinent landmarks of the anatomical structure of interest in the acquired image(s), and measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the acquired image(s) to determine an anatomical structure size. The method still further comprises reconciling the anatomical structure size and an implant size.

Abstract: A method for selecting a medical device for use in the performance of a medical procedure. The method comprises acquiring image data relating to an anatomical region of interest of a patient's body and generating a multi-dimensional depiction of the anatomical region of interest using the acquired image data. The method further comprises defining a plurality of points relative to the multi-dimensional depiction, determining one or more measurements based on the defined plurality of points, and then selecting a medical device to be used based on the determined measurements.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for selecting a medical device for use in the performance of a medical procedure. The method comprises acquiring image data relating to an anatomical region of interest of a patient's body and generating a multi-dimensional depiction of the anatomical region of interest using the acquired image data. The method further comprises defining a plurality of points relative to the multi-dimensional depiction, determining one or more measurements based on the defined plurality of points, and then selecting a medical device to be used based on the determined measurements.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method for evaluating the placement of a prosthetic heart valve in a structure of interest. The method comprises acquiring one or more depictions of an anatomical region of interest that includes the structure of interest, wherein each depiction shows the structure of interest and/or the blood pool volume of the left ventricular outflow tract (LVOT) of the patient's heart. The method further comprises designating one or more positions in at least one of the one or more depictions wherein each position corresponds to a respective position in the structure of interest at which the prosthetic valve may be placed. The method still further comprises predicting, for each of the one or more designated positions, an amount of blood flow obstruction through the LVOT of the patient's heart that would occur if the prosthetic valve was to be placed at a corresponding position in the structure of interest.

Abstract: A method of analyzing a hollow anatomical structure of interest for percutaneous implantation. The method comprises acquiring image data of an anatomical region of interest that includes the anatomical structure of interest, and generating a segmented model of the anatomical region of interest using the acquired image data. The method further comprises obtaining image(s) of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model thereof, identifying one or more pertinent landmarks of the anatomical structure of interest in the acquired image(s), and measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the acquired image(s) to determine an anatomical structure size. The method still further comprises reconciling the anatomical structure size and an implant size.

Abstract: A high power factor AC to DC power supply having a high frequency pulse producing circuit comprising an inductor supplied with rectified raw AC power through a semiconductor switch which provides dynamic power factor correction by maintaining the width of the on-times of the switch substantially constant throughout each cycle of the input AC power. The peak energy stored in the inductor during the on-times are a function of the amplitude of the instantaneous voltage of said rectified AC power, so that each time the switch is turned off, the output pulse of current supplied to the load by the inductor has a time duration which is a direct function of the instantaneous voltage value of the rectified AC power. The output load has a filter whose time constant is greater than a cycle of said rectified AC power, and the average on-time of said switch is varied over a number of cycles of said AC power to regulate the output voltage of said supply.

Abstract: A preregulator power supply having drive and control circuits which are isolated or floating alternately from the input and output leads to permit direct coupling to the power switching regulator device without requiring isolation devices such as transformers or optical isolators. This is achieved by an added series winding on the output choke, the common junction of which is connected to the output of the switching regulator and also forms the return lead for the floating drive and control circuits, while the added winding provides a sample output voltage for comparison by the floating drive and control circuits to control the width of pulses fed to the switching regulator device. A free-wheeling diode is also connected from the output of the switching regulator to an output terminal to maintain current in the choke during the OFF cycle of the switching regulator and provide several isolated regulated voltages in windings magnetically coupled to the choke.