Optical coherence tomography system and method

An optical coherence tomography, OCT, system comprising:

• a first system unit configured for obtaining OCT-scan data comprising a plurality of B-scan data sets from a target, each B-scan data set comprising a respective set of A-scan data sets, respective A-scan data sets in a respective set of A-scan data sets comprising respective depth-profiles for respective lateral positions of the target traversed while performing each B-scan;
• and
• a second system unit configured to generate an OCT-image from the OCT-scan data,
• the first system unit comprising:
• an optical radiation source configured to generate a beam of optical radiation;
• beam manipulation means configured to split the beam into a reference beam to be directed according to a reference path and a target beam to be directed according to a target path comprising the target and to merge the reference beam and the target beam into a merged beam;
• a scanning device arranged in the target path to direct the target beam towards the target while scanning the beam in a lateral direction respective to a surface of the target;
• a detector to receive the merged beam;
• wherein the first system unit is configured to obtain the OCT scan data by repeatedly obtaining an A-scan from the target with a first frequency while performing the B-scan with a second frequency, wherein said repeatedly obtaining with a first frequency and said scanning with a second frequency is performed with a mutually varying phase relationship, said first frequency being greater than said second frequency,
• and wherein the second system unit is configured to use information about said mutually varying phase relationship when generating the OCT-image from the OCT-scan data.