<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31455661</termId><termName>optical coherence tomography</termName><termType>PT</termType><termNote><![CDATA[ Tomographic technique using lasers for imaging of subsurface tissue structure with sub-micrometer axial and lateral resolution.  ]]></termNote><termCreatedDate>2026-03-30 21:02:39</termCreatedDate><relation><relationType>UF</relationType><termId>31455662</termId><termName>OCT</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31455663</termId><termName>tomography, optical coherence</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31436433</termId><termName>tomography</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31469750</termId><termName>spectral domain optical coherence tomography</termName><termType>PT</termType></relation></term>  </Zthes>