Medical image diagnostic apparatus and medical information display control method

1. A medical image diagnostic apparatus, comprising processing circuitry configured to:

calculate a plurality of different types of index values in a region of interest (ROI) of a subject in a common imaging mode; and

determine, for at least one of the ROI or numerical information on the ROI, different types of display characteristics corresponding to the types of the index values based on the calculated index values,

wherein the different types of display characteristics are display characteristics at an identical position in the ROI or the numerical information in the ROI,

wherein the processing circuitry determines, as the display characteristics, a display color and at least one of a thickness, a line type, and a hatching pattern of a border line of the ROI and a character of numerical information on the ROI.

2. The medical image diagnostic apparatus according to claim 1 , wherein the processing circuitry

receives an instruction to designate the ROI from an operator, and set the ROI to data collected by the imaging mode.

3. The medical image diagnostic apparatus according to claim 1 , wherein the imaging mode is at least one of elastography mode, attenuation analysis mode, and viscosity analysis mode.

4. The medical image diagnostic apparatus according to claim 1 , wherein the processing circuitry determines display characteristics of numerical information calculated for the ROI.

5. The medical image diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to:

set a type of the index value and a threshold of the index value;

calculate an index value of the set type; and

determine the display characteristics based on the calculated index value and the set threshold of the index value.

6. The medical image diagnostic apparatus according to claim 5 , wherein the processing circuitry sets at least one of the type of the index value or the threshold through input from an operator.

7. The medical image diagnostic apparatus according to claim 5 , wherein the processing circuitry sets the type of the index value determined from among a plurality of candidates and the threshold.

8. The medical image diagnostic apparatus according to claim 5 , wherein the processing circuitry sets the type of the index value and the threshold in accordance with the imaging mode.

9. The medical image diagnostic apparatus according to claim 5 , wherein the processing circuitry receives a designation of an examination region, and sets the type of the index value and the threshold in accordance with the received examination region.

10. The medical image diagnostic apparatus according to claim 1 , wherein the processing circuitry further displays at least one of the ROI or numerical information on the ROI based on the determined display characteristics.

11. The medical image diagnostic apparatus according to claim 10 , wherein the processing circuitry further determines a rank order of each calculated index value, and displays the determined rank order.

12. The medical image diagnostic apparatus according to claim 11 , wherein the processing circuitry further displays numerical information on the ROI in order of the rank.

13. The medical image diagnostic apparatus according to claim 1 , wherein the ROI is a measurement ROI for calculating the index value that is based on information on each pixel included in the ROI.

14. The medical image diagnostic apparatus according to claim 1 , wherein the ROI is an imaging ROI for collecting image data included in the ROI.

15. The medical image diagnostic apparatus according to claim 1 , wherein the index value is a statistical value based on information on each pixel included in the ROI.

16. The medical image diagnostic apparatus according to claim 1 , wherein the index value is at least one of an index of image diagnosis based on an image of the ROI or an index of reliability of an image of the ROI.

17. The medical image diagnostic apparatus according to claim 1 , wherein the medical image diagnostic apparatus is an ultrasound diagnostic apparatus configured to collect ultrasound data by scanning on the subject as the tissue property data.

18. The medical image diagnostic apparatus according to claim 1 , wherein the imaging mode is elastography mode using shear wave.

19. The medical image diagnostic apparatus according to claim 1 , wherein the index values include an average value of shear wave velocities and a standard deviation of shear wave velocities.

20. The medical image diagnostic apparatus according to claim 1 , wherein the identical position in the ROI is a position of a border line of the ROI.

21. The medical image diagnostic apparatus according to claim 1 , wherein the processing circuitry is configured to:

connect with a storage for storing a table in which a plurality of ranges of the index values defined by a plurality of thresholds are associated with the display characteristics corresponding to the ranges; and

determine, by referring to the table, the display characteristics corresponding to the ranges including the calculated index values of the ROI as display characteristics of the ROI.

22. A medical information display control method, comprising:

calculating a plurality of different types of index values in a region of interest (ROI) of a subject in a common imaging mode; and

determining, for at least one of the ROI or numerical information on the ROI, different types of display characteristics corresponding to the types of the index values of the ROI based on the calculated index values,

wherein the different types of display characteristics are display characteristics at an identical position in the ROI or the numerical information in the ROI,

wherein the processing circuitry determines, as the display characteristics, a display color and at least one of a thickness, a line type, and a hatching pattern of a border line of the ROI and a character of numerical information on the ROI.