Oct interpretation ppt. • In vivo “optical biopsy” of the retina.
Oct interpretation ppt Repeat the procedure with other scan protocols if necessary. Read less Aug 5, 2015 · This is part of the Spectral Domain OCT Interpretation for the General Ophthalmologist series, which focuses on use of SD-OCT in patients with glaucoma and retinal disease. Nov 5, 2015 · OCT is a non-contact, non-invasive imaging technique that correlates well with retinal histology. 12c. dk. 8. • Optical Coherence Tomography (OCT) is a light-based imaging modality that can provide in vivo high-resolution images of the coronary artery with a level of resolution (axial 10-20 μm) ten times higher than IVUS but with a penetration depth limited to 1. Increased. Up to 5 microns of. 5. This novel imaging modality allowed for detailed visualization of the posterior retina in a cross Fig 12a. The document also describes different OCT instruments available, artifacts that can affect scans, and analysis techniques like ganglion cell analysis, guided progression analysis, and panoMap analysis Interpretation Approach ! General image characteristics ! Quality ! Artifacts ! Segmentation errors ! OCT analysis ! Scrutinize OCT layer by layer ! Location of abnormalities narrows Dx – Vitreo-retinal interface disease – Inner retinal disease – Outer retinal disease – Subretinal disease – Diffuse retinal disease If any doubt, a retinal OCT can demonstrate a detachment easily. b. 4. Dry- AMD- Drusen are seen as undulations and elevations in the hyperreflective band of the RPE with less reflective material beneath them. High scanning. Nov 26, 2011 · This document discusses the interpretation of optical coherence tomography (OCT) images of the retina and some new developments in OCT technology. Nov 13, 2020 · Background Optical coherence tomography angiography (OCTA) can image the retinal vasculature in vivo, without the need for contrast dye. 12b. While countless publications detail OCTA’s use for the study of 9. It describes how OCT can measure macular thickness, RNFL thickness, and optic disc parameters. ganglion cell inner plexiform layer (GCIPL) thickness vs. Describe Jun 14, 2022 · This is an introductory, basic-level presentation for those who are not retina specialists and are interested in learning about optical coherence tomography (OCT) and interpretation of OCT images of common retinal conditions: Presenters review the fundamentals of OCT, including potential uses and limitations. 6. Aug 30, 2023 · INTRODUCTION OF OCT • Optical coherence tomography (OCT) is a diagnostic, non-invasive, non-contact, transpupillary imaging system which provides high resolution cross-sectional images of anterior eye, the retina, vitreous and optic nerve. g in dense cataract Thus OCT is difficult/impossible to perform in cases of: #15: Qualitative analysis of the OCT scan includes observation of the reflective qualities of the retinal structures. Mark Friedberg” has been viewed over 250,000 times. Pooja B. , retinal nerve fiber layer (RNFL) thickness vs. Andersen Optics and Plasma Research Department Risø National Laboratory, Denmark E-mail: peter. Descriptive Interpretation of OCT Elizabeth L Affel, MS, OCT-C Ophthalmic Photographers’ Society MidYear Meeting 2013 . 3. Type 1 CNVM (Occult)- Seen as fibrovascular PED in the OCT. In 1991 optical coherence tomography (OCT) was described in the literature . the above ppt includes a detailed and precise notes on OCT and its interpretation. Jun 7, 2017 · OCT - Download as a PDF or view online for free. The saved OCT scans are analyzed both qualitatively and quantitatively. 5-2 mm. One particular video “Mastering OCT Interpretation with Dr. Optic nerve and nerve fiber layer OCT helps in the management of glaucoma. Adjust the light entry point across the pupil to get the best signal strength. 12d. It allows detection of morphological changes and measurement of retinal thickness, volume, and nerve fiber layer thickness. Nov 15, 2014 · optical coherence tomography is a new tool that makes retinal diagnosis easier. This technology has been commercially available since 2014, however, much of its use has been limited to the research setting. Nov 28, 2014 · This document discusses using optical coherence tomography (OCT) to analyze the macula, retinal nerve fiber layer (RNFL), and optic nerve head in patients with glaucoma or suspected glaucoma. macula) and what parameters (e. et al. Considering how ubiquitous this technology is, it’s essential that you are able to interpret these 3D reconstructions. Optic nerve OCT. Peter E. Make sure that the OCT image is upright and straight and the reference scan pattern is centered on the fovea or the area of interest. Functioning principles. However, deciding what regions (e. 2 INTRODUCTION Medical imaging modality with 1-10um resolution and 1-2mm penetration depths High-resolution, sub- surface, non-invasive or minimally invasive internal body imaging technique for structural and quantitative imaging OCT is analogous to ultrasound imaging Mar 31, 2018 · OCT Imaging Speeds and Technologies Time Domain OCT 400 axial scans per second (Zeiss Stratus - 2002) 8-10 um axial resolution Spectral / Fourier Domain OCT – spectrometer 25,000 – 50,000 axial scans per second (2006) 5 - 7 um axial resolution Next Generation Spectral / Fourier OCT 70,000 – 100,000 axial scans per second ~3 - 5 um axial Apr 26, 2020 · OCT is useful for diagnosing pre-perimetric glaucoma, monitoring disease progression, and determining whether visual field defects are real. Jul 20, 2014 · Interpretation of OCT images involves identifying layers and structures that appear as various colors based on reflectivity. It is a 1 hour and 40-minute lecture teaching interpretation of OCT with both normal and pathological anatomy. It describes the layers of the normal retina that can be visualized on OCT and key pathologies that affect the outer, middle, and vitreo-retinal interface regions. OCT images are obtained by retaining the modulus of Microsoft Word - 10_OCT_PPT. g. TD-OCT and SD-OCT Reference mirror – Varied Compares time delay Visante OCT Hiedelberg Slit Lamp OCT Wavelength – 1310nm Scan width – 16mm Scan depth – 6mm Resolution – 18 μm in the axial plane and 60 μm in the lateral plane Reference mirror – Stationary Spectrometer – Employed Spectralis – OCT Cirrus OCT Wavelength Aug 10, 2017 · #11: to purchase e. Jamnadas, MD, Peter Russo, OD, William Bonk, Shuchi Patel, MD Loyola University Chicago, Stritch School of Medicine, Department of Ophthalmology, Jun 11, 2023 · Optical coherence tomography (OCT) enables ophthalmologists to measure retina thickness on a cellular level and has revolutionized the way we practice ophthalmology. Repeatability for. , optic disc region vs. andersen@risoe. Mar 15, 2012 · Introduction: Optical coherence tomography. e. Type 2 CNVM (Classic)- Note the hyperreflective lesion above the level of RPE in the OCT scan. OCT Image Interpretation Can the EEL (rope) and Adventitia (mesh) be visualized? Normal Artery Fibrous Plaque Is the signal change in the lumen or the wall? Wall Lumen Could you draw a line NO YES Shlofmitz, E. the viewed through the pupil), OCT invaluable ophthalmic diagnostic tool. The OCT software assigns "cooler" colors (green, blue) to structures with lower reflectivity. • In vivo “optical biopsy” of the retina. goal is to help novices and better understand OCT’s practice. OCT Analysis: Approach ! Scrutinize OCT layer by layer ! Narrow the diagnosis – Categorizing disease by location of abnormality Oct 8, 2014 · RETINAL THICKNESS ASSESSMENT • The OCT unit determines the anterior and posterior surface of the retina in order to calculate retinal thickness flat spreading PED (arrowhead) with irregularities of the retinal pigment epithelium (RPE) band, CME, subretinal fluid 32 In neuro-ophthalmology, OCT can aid in diagnosis, monitoring and in some cases, provide prognostic information concerning diseases affecting the optic nerve Oct 18, 2020 · AS-OCT - Download as a PDF or view online for free. neuroretinal rim width) to measure can often be confusing. doc Author: Gabi Created Date: 4/12/2011 10:05:24 AM Mar 16, 2022 · Optical coherence tomography (OCT) has become an indispensable tool in the diagnostic evaluation of glaucoma. The OCT machines provide automated, serial analysis of the nerve fiber layer thickness, cup-to-disc ratio, and other measurements. Part II: In terms of their OCT teaching, they feature a handful of different videos discussing OCT interpretation. Oct interpretation Ghanbari MD This is what we wanted. Over time, more clinical practices have adopted OCTA imaging. Dec 25, 2018 · OCT provides high-resolution, cross-sectional images of the retina and anterior eye using low-coherence interferometry. Algorithmic Approach for OCT Guided Stent around the signal change? Apr 1, 2014 · 19. Outline. Pre-Euretina Normal OCT Classification Formed Vitreous Posterior Cortical Vitreous Preretinal Space Nerve Fiber Layer Ganglion Cell Layer Inner Plexiform Layer Inner Nuclear Layer Outer Plexiform Layer (dendritic) Henle’s-ONL junction (subtle) Henle Fiber Layer (axonal OPL) Outer Nuclear Layer Sattler’s Layer (inner Choroid) Haller’s Layer (Outer Choroid) External Limiting Membrane . Single axial interference between. Specific OCT pathological and cases will be reviewed. transparency of the eye (i. OCT is used to qualitatively and quantitatively analyze retinal thickness, layers, and structures. This review will offer a basic toolkit for OCTA interpretation in clinical practice and explore its utility in assessing retinal pathology. 7. The document discusses the principles, advantages, and procedures of OCT, summarizing key aspects of image acquisition and analysis for clinical and research applications. Jun 29, 2018 · Optical coherence tomography (OCT) provides high-resolution cross-sectional images of the retina using infrared light. Part I: Introduction to optical coherence tomography (OCT). It has advanced from time domain OCT to spectral domain OCT, improving resolution and scan speed. Recent advances include enhanced depth imaging to view deeper choroidal structures and software to quantify retinal thickness and nerve fiber layer measurements. fdnob uadw xzjwxr fbiij qyfx amwvp wgps edlzukw jleghv tzoifmq