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High resolution optical coherence tomography based imaging for intraluminal and interstitial use implemented with a reduced form factor
High resolution optical coherence tomography based imaging for intraluminal and interstitial use implemented with a reduced form factor
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机译:基于高分辨率光学相干断层扫描的成像技术,用于腔内和间隙的成像,尺寸减小
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摘要
Mechanically robust minimal form factor OCT probes suitable for medical applications such as needle biopsy, intraluminal and intravascular imaging are achieved in part by employing compound lenses with some or all of the optical elements, including an optical fiber, to be thermally fused in tandem. To achieve a desired working distance without increasing a diameter of the optics assembly, a spacer can be disposed between the optical fiber and focusing optics. The compound lens configuration can achieve higher transverse resolution compared to a single lens at a desired working distance without increasing the probe diameter. In exemplary needle biopsy embodiments, the optical assembly is encapsulated in a glass housing or metal-like housing with a glass window, which is then selectively passed through a hollow needle. Esophageal imaging embodiments are combined with a balloon catheter. Circumferential and three-dimensional spiral scanning can be achieved in each embodiment.
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