Koninklijke Philips Corporation N.v.

Stéphane Allaire

Juergen Weese

Heinrich Schulz

Alexandra Groth

Steffen Renisch

Sven Kabus

Alfonso Agatino Isola

Rolf Jürgen Weese

Christoph Neukirchen

Hrishikesh Narayanrao Deshpande

Maria Luiza Bondar

Jens Wiegert

Cecile Dufour

Celine Firtion

Jacek Lukasz Kustra

Ganesan Ramachandran

Sindhu Priyadarshini Nellur Prakash

The invention relates to a system and method for tracking at least one anatomic structure by means of an image-registration based tracking procedure using at least one parameter, where the anatomic structure includes a plurality of implanted markers. A parameter setting () unit is configured to determine measured positions of the implanted markers in each image of a series of images acquired using an imaging unit (), and to perform an optimization procedure to determine an optimized value of the at least one parameter on the basis of deviations between the measured and calculated positions. Then, the position of the anatomic structure is tracked in further images by means of the tracking procedure using the optimized value of the at least one parameter.

Calibration of image-registration based tracking procedures

The invention relates to a system for assisting in evaluating a contour of an anatomic structure () with respect to a dose distribution corresponding to a treatment plan for a radiation therapy treatment of a patient. The system comprises an evaluation unit particularly configured to evaluate the dose distribution in varying distances from the contour of the anatomic structure () to determine at least one point where the evaluated dose distribution fulfills a predetermined condition, and to determine the distance between the at least one point and the contour and/or to visualize the at least one point to a user of the system.

Evaluation of an anatomic structure with respect to a dose distribution in radiation therapy planning

Disclosed is a computer-implemented method for determining an ovarian follicle count and size (diameter) from a pair of 2-D transvaginal ultrasound scans. The method comprises receiving the pair of 2-D (two-dimensional) transvaginal ultrasound scans, each scan comprising a plurality of 2-D ultrasound images captured along a translation direction of an ultrasound probe used to capture said scan, the respective translation directions being at least approximately orthogonal, and for each of said scans, the method further comprising detecting candidate follicles in the plurality of 2-D ultrasound images of the at least one 2-D transvaginal ultrasound scan; and segmenting the detected candidate follicles to determine an average diameter for each candidate follicle; selecting the 2-D transvaginal ultrasound scan including the candidate follicle having the largest average diameter; and presenting the determined average diameters and the segmentations of the detected candidate follicles of the selected 2-D transvaginal ultrasound scan. A computer program product, ultrasound image processing device and ultrasound imaging system adapted to implement this method are also disclosed.

Ovarian follicle count and size determination using transvaginal ultrasound scans

The present invention relates to a device for displaying image information, the device comprising: a detection unit (), which is configured to identify a plurality of admissible display orientations of multiple data sets; a restriction unit (), which is configured to restrict the plurality of admissible display orientations of at least one of the multiple data sets to a set of admissible display orientations in common for all the multiple data sets; and/or to restrict a plurality of admissible scrolling directions of at least one of the multiple data sets to a set of admissible scrolling directions that are normal to the restricted admissible display orientations; and a display unit (), which is configured to display the multiple data sets using the set of the restricted display orientations and/or the set of restricted scrolling directions.

Device and method for displaying image information

The invention relates to a system and a method for evaluating a treatment plan for an external radiation therapy treatment, the treatment plan comprising parameters for controlling an external radiation therapy apparatus during the treatment. The system comprises a database storing historic treatment plans and storing for each historic treatment plan a quality parameter indicative of whether a deviation between a planned dose distribution and a measured dose distribution resulting from an execution of the treatment plan is within an acceptable limit. An evaluation unit determines a threshold value for each of a plurality of treatment plan metrics based on the historic treatment plans and the associated quality parameters. Further, the evaluation unit calculates a value of each of the metrics for the treatment plan and compares the value of each of the metrics with the threshold value determined for the respective metric.

Evaluation of dose accuracy of radiation therapy treatment plans

A system () is provided for determining a transformation between different coordinate systems associated with different medical data. In determining the transformation, the system () makes use of a third set of anatomical landmarks () defined in a reference coordinate system to match a first set of anatomical landmarks () defined in a first coordinate system to a second set of anatomical landmarks () defined in a second coordinate system. Effectively, the third set of anatomical landmarks is used as an intermediary in obtaining the transformation between both input sets of coordinate systems. As the third set of anatomical landmarks includes the anatomical landmarks of both input sets, it is not needed for both input sets to be identical or even to overlap. Rather, even in case both input sets are entirely disjunct, i.e., not-overlapping, it is still possible to determine the transformation between the different coordinate systems.

Determining transformation between different coordinate systems

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Nanterre, France

Stéphane Allaire