Systems and methods for vascular image processing

A system, comprising:

• a storage device storing a set of instructions;
• and
• at least one processor in communication with the storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
• obtaining a third vascular image relating to a first blood vessel of a first region of a subject, the first vascular image being acquired by scanning the first region using a third scanning sequence;
• obtaining a fourth vascular image relating to a second blood vessel of a second region of the subject, the fourth vascular image being acquired by scanning the second region using a fourth scanning sequence different from the third scanning sequence, wherein there is an overlapping portion between the first blood vessel and the second blood vessel;
• generating a first target image by extracting the overlapping portion from the third vascular image;
• generating a second target image by extracting the overlapping portion from the fourth vascular image;
• generating a target enhanced image by inputting the first target image and the second target image into a fourth trained machine learning model, the target enhanced image indicating path information of a vascular centerline of the overlapping portion;
• determining a connecting centerline based on the target enhanced image;
• and
• determining a global vascular centerline based on the connecting centerline, a first centerline of the first blood vessel determined based on the third vascular image, and a second centerline of the second blood vessel determined based on the fourth vascular image, the global vascular centerline being configured to combine the first blood vessel in the third vascular image and the second blood vessel in the fourth vascular image.

A system, comprising:

• a storage device storing a set of instructions;
• at least one processor in communication with the storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
• obtaining an initial image relating to a blood vessel, the initial image being a three-dimensional image acquired using a first imaging sequence;
• determining an enhanced image based on the initial image using a first trained machine learning model, the enhanced image indicating path information of a centerline of the blood vessel;
• and
• determining the centerline of the blood vessel based on the enhanced image.