Lee Anthony M D, MacAulay Calum, Lane Pierre
Imaging Unit, Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada.
Biomed Opt Express. 2018 Oct 23;9(11):5678-5690. doi: 10.1364/BOE.9.005678. eCollection 2018 Nov 1.
We present a new micromotor catheter implementation of dual-beam manually-actuated distortion-corrected imaging (DMDI). The new catheter called a depth-multiplexed dual-beam micromotor catheter, or mDBMC, maintains the primary advantage of unlimited field-of-view distortion-corrected imaging along the catheter axis. The mDBMC uses a polarization beam splitter and cube mirror to create two beams that scan circularly with approximately constant separation at the catheter surface. This arrangement also multiplexes both imaging channels into a single optical coherence tomography channel by offsetting them in depth, requiring half the data bandwidth compared to previous DMDI demonstrations that used two parallel image acquisition systems. Furthermore, the relatively simple scanning pattern of the two beams enables a straightforward automated distortion correction algorithm. We demonstrate the imaging capabilities of this catheter with a printed paper phantom and in a section of dragon fruit.
我们展示了一种用于双光束手动驱动畸变校正成像（DMDI）的新型微电机导管。这种名为深度复用双光束微电机导管（mDBMC）的新型导管，保持了沿导管轴进行无限视野畸变校正成像的主要优势。mDBMC使用偏振分束器和立方镜来产生两束光，这两束光在导管表面以近似恒定的间距进行圆周扫描。这种布置还通过在深度上偏移将两个成像通道复用为单个光学相干断层扫描通道，与之前使用两个并行图像采集系统的DMDI演示相比，所需的数据带宽减半。此外，两束光相对简单的扫描模式使得能够采用直接的自动畸变校正算法。我们用打印纸模型和火龙果切片展示了这种导管的成像能力。
