Method of determining a motion of a heart wall
AssigneeMedis Associated B.V.
InventorsGianni Pedrizzetti, David Jonathan Hautemann, Pieter Hendrik Kitslaar, Johan Hendrikus Christiaan Reiber
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Abstract
A sequence of images acquired consecutively in time at fixed time intervals is received, the images comprising image data of at least part of a heart having a heart wall, identifying, in each image, at least part of the heart wall and defining, in each image, at least one vector point on the identified heart wall. The method further comprises determining motion of the vector point over time, based on the sequence and receiving a first reference related to the heart. Based on the tracking of the vector point and the first reference, a motion vector is determined indicating motion of the vector point relative to the reference.
Claims19
In an electronic computing device, a method of determining a motion of a heart wall, the method comprising:
- receiving a sequence of images acquired consecutively in time at fixed time intervals, the images comprising image data of at least part of a heart having a heart wall,
- identifying, in each image, at least part of the heart wall;
- defining, in each image, at least one vector point on the identified heart wall;
- tracking the vector point over time, based on the sequence;
- receiving a first reference related to the heart;
- based on the tracking of the vector point and the first reference, determining a motion vector indicating motion of the vector point relative to the reference,
- wherein the motion vector is determined as a difference vector between (i) a first vector from the vector point to the first reference at the end of the diastolic phase in a cardiac cycle, and (ii) a second vector from the vector point to the first reference at the end of the systolic phase in the cardiac cycle.
An electronic computing device comprising:
- a data acquisition module arranged to receive a sequence of images acquired consecutively in time at fixed time intervals, the images comprising image data of at least part of a heart having a heart wall,
- an image processing module arranged to:
- identify, in each image, at least part of the heart wall;
- define, in each image, at least one vector point on the heart wall;
- and
- track the vector point over time, based on the sequence;
- a motion calculation module arranged to:
- receive a first reference related to the heart;
- and
- determine, based on the tracking of the vector point and the reference, a motion vector indicating motion of the vector point relative to the reference,
- wherein the motion vector is determined as a difference vector between (i) a first vector from the vector point to the first reference at the end of the diastolic phase in a cardiac cycle, and (ii) a second vector from the vector point to the first reference at the end of the systolic phase in the cardiac cycle.
Dependencies are inferred from the claim text.