Devices, systems, and methods for in-stent restenosis prediction

A system, comprising:

• an intravascular imaging catheter configured to obtain intravascular imaging data after a stent has been deployed within a vessel to provide treatment to a lesion during a stent placement procedure, wherein the intravascular imaging catheter comprises an optical fiber for optical coherence tomography (OCT) or an ultrasound transducer for intravascular ultrasound (IVUS), wherein the stent comprises a proximal end and a distal end;
• and
• a processor configured for communication with the intravascular imaging catheter, wherein the processor is configured to:
• determine, using the intravascular imaging data, a stent diameter on at least one of a side proximal of the lesion or a side distal of the lesion;
• determine, using the intravascular imaging data, a vessel diameter on at least one of the side proximal of the lesion or the side distal of the lesion;
• calculate, using the stent diameter and the vessel diameter, a percentage for at least one of the side proximal of the lesion or the side distal of the lesion;
• determine, during the stent placement procedure, a probability of restenosis based on the percentage;
• and
• provide, to a display in communication with the processor, an output for a user associated with the user controlling an expansion of the stent during the stent placement procedure, wherein the output comprises at least a portion of the intravascular imaging data and a graphical representation indicating the probability of restenosis.