TY - GEN
T1 - Correction of astigmatism in endoscopic OCT for esophageal and coronary imaging
AU - Wang, Tianshi
AU - Van Der Steen, Antonius F.W.
AU - Van Soest, Gijs
N1 - © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
PY - 2012/3/1
Y1 - 2012/3/1
N2 - Optical Coherence Tomography catheters comprise a transparent tube which can act as a negative cylindrical lens and introduce astigmatism which will lead to a decrease in transverse resolution and image contrast. In this report, we numerically analyzed the astigmatism for standard catheter designs applicable to esophageal and coronary imaging. In order to maintain image quality, generally the beam can be refocused by a curved interface. To handle a situation involving high-index flush media, another method based on matching refractive indices is described and shown to successfully restore a round beam.
AB - Optical Coherence Tomography catheters comprise a transparent tube which can act as a negative cylindrical lens and introduce astigmatism which will lead to a decrease in transverse resolution and image contrast. In this report, we numerically analyzed the astigmatism for standard catheter designs applicable to esophageal and coronary imaging. In order to maintain image quality, generally the beam can be refocused by a curved interface. To handle a situation involving high-index flush media, another method based on matching refractive indices is described and shown to successfully restore a round beam.
UR - http://www.scopus.com/inward/record.url?scp=84863349176&partnerID=8YFLogxK
U2 - 10.1117/12.906326
DO - 10.1117/12.906326
M3 - Conference proceeding
AN - SCOPUS:84863349176
SN - 9780819488602
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Endoscopic Microscopy VII
T2 - Endoscopic Microscopy VII
Y2 - 22 January 2012 through 23 January 2012
ER -