Medical information display apparatus for displaying an index value for the lung, medical image processing apparatus for deriving the index value, and medical information display method for displaying the index value

1. A medical information display apparatus for displaying an index value for a lung, the medical information display apparatus comprising:

first processing circuitry configured to display information based on volume data including at least a lung, wherein

the first processing circuitry is further configured to display a first index value and a second index value, so as to be kept in correspondence with each other, the first index value being information defining a position within lung parenchyma included in the lung based on an extent of a bronchus included in the lung, the second index value being based on the volume data related to the lung.

2. The medical information display apparatus according to claim 1 , wherein the second index value is an index value related to a lesion amount of the lung.

3. The medical information display apparatus according to claim 1 , wherein the second index value is a Computed Tomography (CT) value satisfying a predetermined threshold value condition.

4. The medical information display apparatus according to claim 1 , wherein the display, by the first processing circuitry, of the first index value and the second index value kept in correspondence with each other includes displaying a graph in which one of vertical and horizontal axes expresses the first index value, whereas the other of the two axes expresses the second index value.

5. The medical information display apparatus according to claim 1 , wherein the volume data includes two pieces of data acquired at mutually-different points in time.

6. A medical image processing apparatus for deriving the index value for the lung, the medical image processing apparatus comprising:

the medical information display apparatus according to claim 1 ; and

second processing circuitry configured to:

acquire the volume data;

extract the extent of the bronchus included in the lung included in the volume data;

calculate the first index value at an arbitrary evaluation point in the volume data, based on the extracted extent of the bronchus included in the lung; and

derive the second index value based on the volume data.

7. The medical image processing apparatus according to claim 6 , wherein

the second processing circuitry is further configured to calculate the first index value based on a length measured of the bronchus from a reference point in the bronchus on a central side to a point in the bronchus on a peripheral side that is positioned nearest to the evaluation point.

8. The medical image processing apparatus according to claim 6 , wherein

the second processing circuitry is further configured to calculate, as the first index value, a quantity of branches of the bronchus that are present between a reference point in the bronchus on a central side and a point in the bronchus on a peripheral side that is positioned nearest to the evaluation point.

9. The medical image processing apparatus according to claim 8 , wherein, when the evaluation point is included in a coupled region formed in the lung parenchyma included in the lung, by implementing a region growing method while using a plurality of regions in the bronchus having an equal quantity of branches as starting points, the second processing circuitry is further configured to calculate, as the first index value, the quantity of the branches in the regions in the bronchus serving as the starting points in the formation of the coupled region.

10. A medical information display method for displaying an index value for a lung based on volume data including at least the lung, the medical information display method comprising:

displaying a first index value and a second index value, so to be kept in correspondence with each other, the first index value being information defining a position within lung parenchyma included in the lung based on an extent of a bronchus included in the lung, the second index value being based on the volume data related to the lung.

11. The medical information display method according to claim 10 , further comprising:

acquiring the volume data including at least the lung;

extracting the extent of the bronchus included in the lung included in the volume data;

calculating the first index value at an arbitrary evaluation point in the volume data, based on the extracted extent of the bronchus included in the lung; and

deriving the second index value based on the volume data related to the lung.