Methods and systems for detecting focal lesions in multi-phase or multi-sequence medical imaging studies

A method for detecting lesions in multi-phase or multi-sequence medical imaging studies of medical images, the method comprising:

• detecting native candidate lesions for first phase CT scans;
• detecting candidate lesions for second phase CT scans;
• projecting the candidate lesions detected for the first phase CT scans and/or the second phase CT scans on a same common domain;
• once the native candidate lesions and the candidate lesions are registered together, performing a matching algorithm with an electronic processor for each of the native candidate lesions of the first phase CT scans with the registered candidate lesions from the second phase CT scans to determine presence and contours of valid lesions for the medical images, and to discard the candidate lesions that are not acceptable;
• and
• providing or storing the presence and the contours of the valid lesions.

A non-transitory computer medium including instructions that, when executed as a set of instructions by an electronic processor perform a set of operations comprising:

• detecting native candidate lesions for first phase CT scans;
• detecting candidate lesions for second phase CT scans;
• projecting the candidate lesions detected for the second phase CT scans to register with the first phase CT scans;
• once the native candidate lesions and the candidate lesions are registered together, performing a matching algorithm for each of the native candidate lesions of the first phase CT scans with the registered candidate lesions from the second phase CT scans to determine presence and contours of valid lesions for the medical images, and to discard candidate lesions that are not acceptable;
• and
• providing or storing the presence and the contours of the valid lesions.