PROBLEM TO BE SOLVED: To acquire a favorable OCT image relating to a specific site without necessarily complicating an apparatus configuration.SOLUTION: An optical coherence tomography apparatus includes: an OCT optical system that splits a light flux exited from a light source into measurement light and reference light, guides the measurement light to an analyte and the reference light to a reference optical system, and then detects an interference state between the measurement light reflected from the analyte and the reference light by a detector and polarization adjustment means for adjusting a polarization state of at least any of the measurement light and the reference light. The optical coherence tomography apparatus acquiring an OCT image on the basis of an output signal from the detector, further includes image acquisition means that controls the polarization adjustment means to adjust the polarization state of a specific site of the analyte included on the OCT image and acquires the OCT image relating to the specific site.SELECTED DRAWING: Figure 9【課題】 必ずしも装置構成を複雑にすることなく、特定部位に関する良好なOCT画像を取得できる。【解決手段】 光源から出射された光束を測定光と参照光に分割し、測定光を被検体に導き、参照光を参照光学系に導いた後、前記被検体から反射された測定光と参照光との干渉状態を検出器により検出するOCT光学系と、測定光と参照光の少なくともいずれかの偏光状態を調整する偏光調整手段と、前記検出器からの出力信号に基づいてOCT画像を取得する光干渉断層撮像装置において、前記偏光調整手段を制御して前記OCT画像上に含まれる被検体の特定部位に対して前記偏光状態を調整し、前記特定部位に関する前記OCT画像を取得する画像取得手段を備える。【選択図】 図9
