Apparatus, methods and computer-accessible media for in situ three-dimensional reconstruction of luminal structures

An apparatus, comprising:

• at least one optical waveguide that emits electromagnetic radiation comprising a first electromagnetic radiation and a third electromagnetic radiation,
• a scanning arrangement that at least one of rotates and translates to direct the electromagnetic radiation,
• a strain-sensing sheath that at least partially encloses the at least one optical waveguide and the scanning arrangement,
• the strain-sensing sheath comprising a strain-sensing system optically coupled to the at least one waveguide;
• and
• a controller coupled to the strain-sensing system,
• the controller, using the strain-sensing system, to:
• determine a first strain of the strain-sensing sheath at a first location by:
• transmitting the first electromagnetic radiation towards the strain-sensing sheath,
• obtaining a second electromagnetic radiation from the strain-sensing sheath based on fluorescence excited by the first electromagnetic radiation, and
• determining the first strain based on obtaining the second electromagnetic radiation, and
• determine a second strain of the strain-sensing sheath at a second location by:
• transmitting the third electromagnetic radiation towards the strain-sensing sheath,
• obtaining a fourth electromagnetic radiation from the strain-sensing sheath based on fluorescence excited by the third electromagnetic radiation, and
• determining the second strain based on obtaining the fourth electromagnetic radiation,
• the first location being different from the second location, and
• the controller further to:
• determine a curvature of the sheath between the first location and the second location based on determining the first strain and the second strain of the strain-sensing sheath.