Medical device, method, and storage medium

A method for determining a boundary in a blood vessel tomographic image, the method comprising:

• acquiring data indicating a blood vessel tomographic image;
• executing a call to a machine learning model with the data indicating the blood vessel tomographic image to detect a first region indicating a detection target and one or more second regions different from the first region, the machine learning model having been trained with:
• a plurality of training blood vessel tomographic images, and
• labels indicating positions of first regions and second regions different from the first regions for the training blood vessel tomographic images;
• determining a boundary of the first region using the detected one or more second regions;
• and
• displaying a screen showing the blood vessel tomographic image with a boundary line corresponding to the determined boundary.

A non-transitory computer-readable storage medium storing a program that causes a processor to perform a process comprising:

• acquiring data indicating a blood vessel tomographic image;
• executing a call to a machine learning model with the data indicating the blood vessel tomographic image to detect a first region indicating a detection target and one or more second regions different from the first region, the machine learning model having been trained with:
• a plurality of training blood vessel tomographic images, and
• labels indicating positions of first regions and second regions different from the first regions for the training blood vessel tomographic images;
• determining a boundary of the first region using the detected one or more second regions;
• and
• displaying a screen showing the blood vessel tomographic image with a boundary line corresponding to the determined boundary.