Providing a result data set

A method for providing a comparison data set, the method comprising:

• providing a first result data set by, at a first time:
• capturing a first medical image data set that maps an object under examination within a first temporal phase;
• capturing a second medical image data set that maps a flow of contrast agent in the object under examination within a second temporal phase in a time-resolved manner;
• and identifying multiple partial image data sets in the second medical image data set, wherein each partial image data set of the multiple partial image data sets maps one of multiple physiological subphases within the second temporal phase, wherein the first result data set comprises multiple subtraction image data sets, and wherein each subtraction image data set of the multiple subtraction image data sets is determined based on the first medical image data set and a respective partial image data set of the multiple partial image data sets in the second medical image data set;
• providing a second result data set by, at a second time:
• capturing an additional first medical image data set that maps the object under examination within the first temporal phase;
• capturing an additional second medical image data set that maps the flow of the contrast agent in the object under examination within the second temporal phase in the time-resolved manner;
• and identifying additional multiple partial image data sets in the additional second medical image data set, wherein each partial image data set of the additional multiple partial image data sets maps one physiological subphase of multiple physiological subphases within the second temporal phase, wherein the second result data set comprises additional multiple subtraction image data sets, wherein each subtraction image data set of the additional multiple subtraction image data sets is determined based on the additional first medical image data set and a respective partial image data set of the additional multiple partial image data sets in the additional second medical image data set, and wherein a change in the object under examination has taken place between the first time and the second time;
• and
• providing the comparison data set comprising in each case a difference between a subtraction image data set of the first result data set and of the second result data set that map a same physiological subphase.

A computer-implemented method for providing a trained function, the method comprising:

• capturing a medical training image data set that maps a flow of contrast agent in an object under examination in a time-resolved manner;
• identifying multiple comparison partial image data sets in the medical training image data set, wherein each comparison partial image data set maps one of multiple physiological subphases, wherein the multiple comparison partial image data sets are identified based on:
• respective acquisition times of each respective comparison partial image data set, based on differences between the respectively mapped flow of the contrast agent, by annotation in the medical training image data set, or combinations thereof,
• identifying multiple training image data sets by applying the trained function to input data, wherein the input data is based on the training image data set, and wherein training partial image data sets are provided as output data of the trained function;
• adjusting at least one parameter of the trained function based on a comparison of the multiple training partial image data sets with the comparison partial image data sets;
• and
• providing the trained function.

A medical imaging device comprising:

• a provision unit,
• wherein the medical imaging device is configured to:
• capture a first medical image data set that maps an object under examination within a first temporal phase;
• and
• capture a second medical image data set that maps a flow of contrast agent in the object under examination within a second temporal phase in a time-resolved manner, and
• wherein the provision unit of the medical imaging device is configured to:
• identify multiple partial image data sets in the second medical image data set, wherein each partial image data set of the multiple partial image data sets maps one of multiple physiological subphases within the second temporal phase;
• and
• provide a result data set comprising multiple subtraction image data,
• wherein each subtraction image data set of the multiple subtraction image data sets is determined based on the first medical image data set and a respective partial image data set of the multiple partial image data sets in the second medical image data set.