Recording Medium and Image Playback Method

A non-transitory recording medium recoding a program that causes a computer to execute processing comprising:

• recording operation field images obtained by chronologically shooting an operation field under endoscopic surgery;
• determining presence or absence of a predetermined or larger amount of bleeding based on the operation field images;
• and
• playing back partial images according to a set playback mode in a time range from a time before a start of bleeding to the time after the bleeding among the recorded operation field images, when it is determined that the predetermined or larger amount of bleeding is present.

An image playback method using a computer comprising:

• recording operation field images obtained by chronologically shooting an operation field under endoscopic surgery;
• determining presence or absence of a predetermined or larger amount of bleeding based on the operation field images;
• and
• playing back partial images according to a set playback mode in a time range from a time before a start of bleeding to the time after the bleeding among the recorded operation field images, when it is determined that the predetermined or larger amount of bleeding is present.