AI Article Synopsis
- * Methods to reduce these artifacts include neural networks, spatial compounding, attenuation compensation, and deblurring techniques, helping to extract better optical information from images.
- * Image improvement algorithms significantly enhance the visibility of important clinical features, benefiting dermatologists in noninvasive optical biopsies for better diagnosis.
Article Abstract
Background: Optical coherence tomography (OCT) of skin delivers three-dimensional images of tissue microstructures. Although OCT imaging offers a promising high-resolution modality, OCT images suffer from some artifacts that lead to misinterpretation of tissue structures. Therefore, an overview of methods to mitigate artifacts in OCT imaging of the skin is of paramount importance. Speckle, intensity decay, and blurring are three major artifacts in OCT images. Speckle is due to the low coherent light source used in the configuration of OCT. Intensity decay is a deterioration of light with respect to depth, and blurring is the consequence of deficiencies of optical components.
Method: Two speckle reduction methods (one based on artificial neural network and one based on spatial compounding), an attenuation compensation algorithm (based on Beer-Lambert law) and a deblurring procedure (using deconvolution), are described. Moreover, optical properties extraction algorithm based on extended Huygens-Fresnel (EHF) principle to obtain some additional information from OCT images are discussed.
Results: In this short overview, we summarize some of the image enhancement algorithms for OCT images which address the abovementioned artifacts. The results showed a significant improvement in the visibility of the clinically relevant features in the images. The quality improvement was evaluated using several numerical assessment measures.
Conclusion: Clinical dermatologists benefit from using these image enhancement algorithms to improve OCT diagnosis and essentially function as a noninvasive optical biopsy.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/srt.12423 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthetic polarization-sensitive optical coherence tomography using contrastive unpaired translation.
Sci Rep
December 2024
Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju, 61186, Republic of Korea.
Polarization-sensitive optical coherence tomography (PS-OCT) measures the polarization state of backscattered light from tissues and provides valuable insights into the birefringence properties of biological tissues. Contrastive unpaired translation (CUT) was used in this study to generate a synthetic PS-OCT image from a single OCT image. The challenges related to extensive data requirements relying on labeled datasets using only pixel-wise correlations that make it difficult to efficiently regenerate the periodic patterns observed in PS-OCT images were addressed.
View Article and Find Full Text PDFLoss values of style transfer from UBM to AS-OCT images for plateau iris classification.
Sci Rep
December 2024
Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, Thailand.
Ultrasound biomicroscopy (UBM) is the standard for diagnosing plateau iris, but its limited accessibility in routine clinical settings presents challenges. While anterior segment optical coherence tomography (AS-OCT) is more convenient, its effectiveness in detecting plateau iris is limited. Previous research has demonstrated that combining UBM and AS-OCT image pairs through neural style transfer has improved classification accuracy.
View Article and Find Full Text PDFAdaptation of virtual surgical planning to midface reconstruction with intraoperative navigation: "navigation mediated midface reconstruction".
Oral Surg Oral Med Oral Pathol Oral Radiol
October 2024
Department of Biomedical Engineering, Ankara University, Ankara, Turkey.
Objective: The production of 3-dimensional models and materials according to preoperative virtual surgical planning is a time-consuming process and causes high costs. We aimed to demonstrate the navigation mediated reconstruction of the patients who underwent the removal of a tumoral mass in midfacial region according to their preoperatively prepared surgical plannings.
Study Design: Patients who underwent the removal of tumoral mass and reconstruction in their midfacial region were included in the study.
Assessment of Photoreceptor Recovery and Visual Function Utilizing Adaptive Optics and Microperimetry in Patients with Surgically Closed Macular Holes.
Photodiagnosis Photodyn Ther
December 2024
Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China, Ministry of Education International Joint Laboratory of Ocular Diseases, Tianjin, China, Tianjin Key Laboratory of Ocular Trauma, Tianjin, China, Tianjin Institute of Eye Health and Eye Diseases, Tianjin, China, China-UK "Belt and Road" Ophthalmology. Electronic address:
Background: This study investigated the association between photoreceptor structural restoration and visual function outcomes in patients undergoing surgery for closed macular holes (MHs). Using adaptive optics scanning laser ophthalmoscopy (AOSLO) and microperimetry, we aimed to provide a more detailed understanding of photoreceptor recovery and visual improvement in closed MHs.
Methods: We conducted a retrospective observational study of 31 eyes of 28 patients who underwent vitrectomy with internal limiting membrane (ILM) peeling to treat idiopathic MHs.
This article presents a clinical case of ocular thrombotic microangiopathy of mixed origin (antiphospholipid syndrome, malignant arterial hypertension, multigenic thrombophilia). Multimodal imaging of the fundus provides a detailed assessment of its structures. Pathological changes in the choroid, the "retinal pigment epithelium - Bruch's membrane" complex, and the neurosensory retina, identified using fundus photography, short-wavelength autofluorescence, optical coherence tomography (OCT), and OCT angiography, are described as nonspecific in nature.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!