Patent ID: 8360963

Claim:
An imaging system comprising: a catheter having an optical lens system, the optical lens system being situated at an end portion of the catheter and optically connected to optical guide unit configured to guide light through the catheter, the optical lens system having a numerical aperture which is changeable between a first numerical aperture and a second numerical aperture, said second numerical aperture being higher than said first numerical aperture, and an imaging unit being arranged for optical imaging in co-operation with the catheter, the imaging unit comprising a first imaging modality and a second imaging modality, wherein the first and second imaging modalities are optically connectable with the optical lens system of the catheter, wherein the imaging system is configured to change between imaging with: the first numerical aperture of the optical lens system and the first imaging modality of the imaging unit, and the second numerical aperture of the optical lens system and the second imaging modality of the imaging unit, and wherein the catheter comprises a first control unit configured to change the numerical aperture of the optical lens system between the first numerical aperture and the second numerical aperture, and the imaging unit comprises a second control unit configured to change between imaging with the first and the second imaging modalities of the imaging unit, said first and second control units further being configured for mutual interaction with respect to change of the imaging.