Medical image processing device to generate a blood vessel diagram showing a blood vessel distribution
According to an embodiment, a medical image processing device includes processing circuitry. The processing circuitry acquires an angiographic image of a subject. The processing circuitry detects branch points of blood vessels of the subject on the basis of the angiographic image. The processing circuitry generates a blood vessel diagram, which is a diagram showing a blood vessel distribution, on the basis of the branch points.
1 . A medical image processing device, comprising:
processing circuitry configured to
acquire an angiographic image of a subject;
detect branch points of blood vessels of the subject based on the acquired angiographic image;
generate a blood vessel diagram, which is a diagram showing a blood vessel distribution, based on the detected branch points;
calculate a contrast delay period of time, which is a period of time required for a contrast medium to reach the blood vessel between the detected branch points, based on the angiographic image; and
generate the blood vessel diagram in which the blood vessel is highlighted according to the calculated contrast delay period of time.
2 . The medical image processing device according to claim 1 , further comprising a memory storing a standard blood vessel diagram, which is a diagram showing a standard blood vessel distribution,
wherein the processing circuitry is further configured to generate the blood vessel diagram based on the standard blood vessel diagram and the detected branch points.
3 . The medical image processing device according to claim 1 , wherein the processing circuitry is further configured to cause a display to display the blood vessel diagram.
4 . The medical image processing device according to claim 3 , further comprising an input interface configured to be operated by a user,
wherein the processing circuitry is further configured to cause the display to further display the angiographic image in accordance with an operation of the user input to the input interface when the blood vessel diagram is displayed on the display.
5 . The medical image processing device according to claim 4 ,
wherein the angiographic image is a three-dimensional angiographic image obtained by connecting a plurality of cross-sectional images in which a cross section of the subject is imaged, and
wherein the processing circuitry is further configured to cause the display to display the cross-sectional image including one or more branch points selected by the user among the cross-sectional images of the three-dimensional angiographic image when the user has selected the one or more branch points from a plurality of branch points on the blood vessel diagram displayed on the display via the input interface.
6 . The medical image processing device according to claim 1 , wherein the processing circuitry is further configured to generate the blood vessel diagram based on a thickness of the blood vessel included in the angiographic image.
7 . The medical image processing device according to claim 1 , wherein the processing circuitry is further configured to generate the blood vessel diagram based on a shape of the blood vessel included in the angiographic image.
8 . The medical image processing device according to claim 7 , wherein the processing circuitry is further configured to:
detect a lesion or a device placed within the subject in the angiographic image based on the shape of the blood vessel, and
generate the blood vessel diagram including the lesion or the device when the lesion or the device has been detected.
9 . The medical image processing device according to claim 1 , wherein the processing circuitry is further configured to generate the blood vessel diagram in which the blood vessel having a shorter contrast delay period of time is more highlighted.
10 . The medical image processing device according to claim 1 , wherein the processing circuitry is further configured to:
calculate a density of a contrast medium of the blood vessel between the branch points based on the angiographic image, and
generate the blood vessel diagram in which the blood vessel is highlighted based on the density.
11 . The medical image processing device according to claim 10 , wherein the processing circuitry is further configured to generate the blood vessel diagram in which the blood vessel having a lower density is more highlighted.
12 . The medical image processing device according to claim 10 , wherein the processing circuitry is further configured to:
calculate a change over time in the density, and
generate the blood vessel diagram whose display mode differs in accordance with the change over time in the density.
13 . A medical image processing method to be executed using a computer, the medical image processing method comprising:
acquiring an angiographic image of a subject;
detecting branch points of blood vessels of the subject based on the acquired angiographic image;
generating a blood vessel diagram, which is a diagram showing a blood vessel distribution, based on the detected branch points;
calculating a contrast delay period of time, which is a period of time required for a contrast medium to reach the blood vessel between the detected branch points, based on the angiographic image; and
generating the blood vessel diagram in which the blood vessel is highlighted according to the calculated contrast delay period of time.
14 . A computer-readable non-transitory storage medium storing a program for causing a computer to:
acquire an angiographic image of a subject;
detect branch points of blood vessels of the subject based on the acquired angiographic image;
generate a blood vessel diagram, which is a diagram showing a blood vessel distribution, based on the branch points;
calculate a contrast delay period of time, which is a period of time required for a contrast medium to reach the blood vessel between the detected branch points, based on the angiographic image; and
generate the blood vessel diagram in which the blood vessel is highlighted according to the calculated contrast delay period of time.