Imaging apparatus, method, and storage medium

A method for medical diagnosis, the method comprising:

• acquiring images of a vessel that have been generated by a catheter inserted into the vessel and including a scanner rotatable therein;
• for each of the acquired images,
• determining a representative line based on brightness values of pixels of the image, and
• for each of scanning lines of the image,
• determining a calculation range based on an intersection of the representative line and the scanning line, and
• calculating an index value using brightness values of pixels of the scanning line, the pixels being located in the calculation range;
• determining colors corresponding to the index values calculated for the scanning lines of each image;
• and
• generating a two-dimensional image in which pixels corresponding to the scanning lines of each image and having the determined colors are arranged in a first direction that crosses a second direction corresponding to a longitudinal direction of the vessel.

A non-transitory computer readable storage medium storing a program causing a computer to execute a method for medical diagnosis, the method comprising:

• acquiring images of a vessel that are generated by a catheter inserted into the vessel and including a scanner rotatable therein;
• for each of the acquired images,
• determining a representative line based on brightness values of pixels of the image, and
• for each of scanning lines of the image,
• determining a calculation range based on an intersection of the representative line and the scanning line, and
• calculating an index value using brightness values of pixels of the scanning line, the pixels being located in the calculation range;
• determining colors corresponding to the index values calculated for the scanning lines of each image;
• and
• generating a two-dimensional image of the vessel in which pixels corresponding to the scanning lines of each image and having the determined colors are arranged in a first direction that crosses a second direction corresponding to a longitudinal direction of the vessel.