Medical image processing apparatus, recording medium, and system
A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain medical image data related to a coronary artery of a subject. The processing circuitry is configured to derive a value of a blood flow parameter indicating hemodynamics of the coronary artery, on the basis of the medical image data. The processing circuitry is configured to display information indicating a change in the value of the blood flow parameter along the coronary artery, by using a graph of which the vertical axis expresses values of the blood flow parameter and of which the horizontal axis corresponds to the distance direction along the coronary artery and is configured to further display supplementary information indicating the structure of the coronary artery together with the graph.
1 . A blood flow analysis system based on analysis of a coronary artery image, comprising:
processing circuitry configured to
obtain medical image data related to a coronary artery of a subject from a medical image diagnosis apparatus via a network;
derive a value of a blood flow parameter indicating hemodynamics of the coronary artery based on the medical image data; and
perform a display showing, with a distance direction along the coronary artery as a horizontal axis, a shape of the coronary artery and information indicating a change in the value of the blood flow parameter along the coronary artery together, wherein
the processing circuitry is further configured to
display a first marker, a second marker, and a third marker in corresponding positions on the horizontal axis in the display, wherein the first, second, and third markers are shown within a representation indicating the change in the value of the blood flow parameter along the coronary artery aligned with the horizontal axis; and
display a cross-section image of the coronary artery of a position of the first marker;
calculate a value representing a difference between a first value of the blood flow parameter at one of the markers and a second value of the blood flow parameter at another one of the markers; and
display the calculated value representing the difference of the first and second values of the blood flow parameter, together with (1) a shape of the coronary artery, (2) the information indicating a change in the value of the blood flow parameter, (3) the first, second, and third markers, and (4) the cross-section image of the coronary artery.
2 . The blood flow analysis system according to claim 1 , wherein the blood flow parameter is a quantitative flow ratio.
3 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to derive and display a delta of the blood flow parameter between positions indicated by the first marker, the second marker, and the third marker.
4 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to display a stent image simulatively indicating a shape of a stent in a corresponding position on the horizontal axis in the display, and display a numerical value indicating a length of the stent together with the stent image.
5 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to display, as the display, a color map in which a color corresponding to the value of the blood flow parameter is assigned, and display a curved planar reconstruction image of the coronary artery together with the color map.
6 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to display the first marker, the second marker, and the third marker in corresponding positions on a curved planar reconstruction image of the coronary artery.
7 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to display information indicating a segment of the coronary artery on the horizontal axis.
8 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to derive a value of a morphological parameter indicating a morphology of the coronary artery based on the basis of the medical image data, and
the processing circuitry is further configured to display information indicating a change in the value of the morphological parameter along the coronary artery.
9 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to display a tomographic image of the coronary artery along the distance direction and cause markers corresponding to the first marker, the second marker, and the third marker to be displayed in corresponding positions in the tomographic image.
10 . The blood flow analysis system according to claim 9 , wherein the processing circuitry is further configured to display a value of the blood flow parameter in each of the positions where the first marker, the second marker, and the third marker are displayed.
11 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to set a range in the distance direction along the coronary artery based on a basis of anatomical information and display a value of the blood flow parameter obtained from a statistic value in the range.
12 . The blood flow analysis system according to claim 11 , wherein the processing circuitry is further configured to display a marker indicating the range in a corresponding position on the horizontal axis in the display.
13 . The blood flow analysis system according to claim 11 , wherein the processing circuitry is further configured to set the range in units of segments of the coronary artery.
14 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to obtain volume data indicating functional information about a myocardium of the subject, and
the processing circuitry is further configured to display the functional information about the myocardium, based on the volume data.
15 . The blood flow analysis system according to claim 14 , wherein the processing circuitry is further configured to specify a dominant region of the coronary artery in the myocardium and display a myocardial index value in the dominant region as the functional information about the myocardium.
16 . The blood flow analysis system according to claim 1 , wherein the processing circuitry is further configured to derive, by performing a treatment simulation of the coronary artery while using the medical image data, the value of the blood flow parameter after a treatment of the coronary artery, and
the processing circuitry is further configured to display, by performing a simulation using the blood flow parameter after the treatment, information indicating a change in functional information about a myocardium of the subject when the coronary artery is deformed by the treatment simulation.
17 . The blood flow analysis system according to claim 16 , wherein the processing circuitry is further configured to derive functional information about the myocardium before the treatment by performing a simulation using the blood flow parameter before the treatment, which is derived before the treatment simulation is performed, to derive functional information about the myocardium after the treatment by performing a simulation using the blood flow parameter after the treatment, and display the functional information about the myocardium before the treatment and the functional information about the myocardium after the treatment as the information indicating the change in functional information about the myocardium.
18 . The blood flow analysis system according to claim 17 , wherein the processing circuitry is further configured to specify a dominant region of the coronary artery in the myocardium, derive a myocardial index value before the treatment in the dominant region as the functional information about the myocardium before the treatment, and derive a myocardial index value after the treatment in the dominant region as the functional information about the myocardium after the treatment.
19 . The blood flow analysis system according to claim 1 , wherein
the processing circuitry is further configured to derive, by performing a treatment simulation of the coronary artery while using the medical image data, the value of the blood flow parameter after a treatment of the coronary artery, and
the processing circuitry is further configured to display information indicating a change in the value of the blood flow parameter after the treatment.
20 . The blood flow analysis system according to claim 19 , wherein the processing circuitry is further configured to derive, by performing the treatment simulation, a value of a morphological parameter after a treatment of the coronary artery, and
the processing circuitry is further configured to display information indicating a change in the value of the morphological parameter after the treatment.
21 . A non-transitory computer-readable medium having plural computer-executable instructions recorded therein, the instructions causing a computer to execute:
obtaining medical image data related to a coronary artery of a subject;
deriving a value of a blood flow parameter indicating hemodynamics of the coronary artery based on the medical image data; and
performing a display showing, with a distance direction along the coronary artery as a horizontal axis, a shape of the coronary artery and information indicating a change in the value of the blood flow parameter along the coronary artery together, wherein
the performing of the shape and the information further includes
displaying a first marker, a second marker, and a third marker in corresponding positions on the horizontal axis in the display, wherein the first, second, and third markers are shown within a representation indicating the change in the value of the blood flow parameter along the coronary artery aligned with the horizontal axis; and
displaying a cross-section image of the coronary artery of a position of the first marker,
calculating a value representing a difference between a first value of the blood flow parameter at one of the markers and a second value of the blood flow parameter at another one of the markers; and
displaying the calculated value representing the difference of the first and second values of the blood flow parameter, together with (1) a shape of the coronary artery (2) the information indicating a change in the value of the blood flow parameter, (3) the first, second, and third markers, and (4) the cross-section image of the coronary artery.
22 . A blood flow analysis method based on analysis of a coronary artery image, comprising:
obtaining, by a medical image processing apparatus, medical image data related to a coronary artery of a subject;
deriving, by the medical image processing apparatus, a value of a blood flow parameter indicating hemodynamics of the coronary artery based on a basis of the medical image data; and
performing, by the medical image processing apparatus, a display showing, with a distance direction along the coronary artery as a horizontal axis, a shape of the coronary artery and information indicating a change in the value of the blood flow parameter along the coronary artery together, wherein
the performing of the shape and the information further includes
displaying a first marker, a second marker and a third marker in corresponding positions on the horizontal axis in the display, wherein the first, second, and third markers are shown within a representation indicating the change in the value of the blood flow parameter along the coronary artery aligned with the horizontal axis; and
displaying a cross-section image of the coronary artery of a position of the first marker;
calculating a value representing a difference between a first value of the blood flow parameter at one of the markers and a second value of the blood flow parameter at another one of the markers; and
displaying the calculated value representing the difference of the first and second values of the blood flow parameter, together with (1) a shape of the coronary artery, (2) the information indicating a change in the value of the blood flow parameter, (3) the first, second, and third markers, and (4) the cross-section image of the coronary artery.
23 . A medical image processing apparatus, comprising:
processing circuitry configured to
obtain medical image data related to a coronary artery of a subject;
derive a value of a blood flow parameter indicating hemodynamics of the coronary artery based on the medical image data;
display information indicating a change in the value of the blood flow parameter along the coronary artery, by using a representation of which a horizontal axis corresponds to a distance direction along the coronary artery and which represents values of the blood flow parameter;
display supplementary information indicating a structure of the coronary artery aligned with the horizontal axis;
display, in the representation of the change in the value of the blood flow parameter, a first marker, a second marker, and a third marker, wherein the second marker is displayed in a position away from the position of the first marker toward an upstream side of the coronary artery, and the third marker is displayed in a position away from the position of the first marker toward a downstream side of the coronary artery; and
display a value of a cross-sectional area of the coronary artery in the position in which the first marker is displayed and display a cross-section image at a position of the first marker;
calculate a value representing a difference between a first value of the blood flow parameter at one of the markers and a second value of the blood flow parameter at another one of the markers; and
display the calculated value representing the difference of the first and second values of the blood flow parameter, together with (1) a shape of the coronary artery, (2) the information indicating a change in the value of the blood flow parameter, (3) the markers, and (4) the cross-section image of the coronary artery.