3D thickness measurement using pulse-driven optical coherence tomography based on wavelet transform

2019 ◽  
Author(s):  
Takamasa Suzuki ◽  
Bin Liu ◽  
Samuel Choi
Keyword(s):  
Optical Coherence Tomography ◽  
Wavelet Transform ◽  
Thickness Measurement ◽  
Optical Coherence

scholarly journals Automated macular choroidal thickness measurement by swept-source optical coherence tomography in pseudoxanthoma elasticum

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Rosa Dolz-Marco ◽  
María Andreu-Fenoll ◽  
Pablo Hernández-Martínez ◽  
M. Dolores Pinazo-Durán ◽  
Roberto Gallego-Pinazo
Keyword(s):  
Optical Coherence Tomography ◽  
Choroidal Thickness ◽  
Pseudoxanthoma Elasticum ◽  
Thickness Measurement ◽  
Optical Coherence ◽  
Swept Source

Anterior segment optical coherence tomography and ultrasound biomicroscopy for measuring thickness of corneal and bulbar conjunctival tumours

2021 ◽  
pp. bjophthalmol-2018-312337
Author(s):  
Noémie Lauwers ◽  
Katleen Janssens ◽  
Michelle Mertens ◽  
Danny Mathysen ◽  
Martin Lammens ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Gold Standard ◽  
Imaging Techniques ◽  
Anterior Segment ◽  
Ultrasound Biomicroscopy ◽  
Thickness Measurement ◽  
Histopathological Analysis ◽  
Optical Coherence ◽  
Tumour Thickness ◽  
Thickness Measurements

Background/ObjectiveAnterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM) are two non-invasive imaging techniques used for the measurement of tumour thickness in corneal and bulbar conjunctival tumours. Histopathology (HP), however, remains the gold standard for the measurement of tumour thickness. The aim of this study was to determine whether AS-OCT and UBM are as accurate as HP for measuring tumour thickness.MethodsForty-two corneal and bulbar conjunctival tumours were imaged using AS-OCT and UBM. Images were assessed and tumour thickness was measured. Eleven patients subsequently underwent surgical excision. All specimens were measured during histopathological analysis. The correlation of the thickness measurement on HP to AS-OCT and UBM was then statistically analysed. In cases where the tumour was not excised, thickness measurement comparisons between AS-OCT and UBM were analysed.ResultsAS-OCT and UBM measurements of tumour thickness were found to be significantly positively correlated (p=<0.001), as were UBM and HP thickness measurements (p=0.031). HP and AS-OCT measurements, however, only showed a mild but non-significant positive correlation.ConclusionBoth AS-OCT and UBM are useful techniques to image and measure the thickness of corneal and conjunctival bulbar tumours. While AS-OCT provides better details than UBM, it was more limited in visualising the posterior boundary of the tumour, particularly in malignant tumours. While thickness measurements of both methodologies were correlated, neither should yet be considered as replacements to the gold standard of HP.

The Impact of Nd:YAG Capsulotomy on Foveal Thickness Measurement by Optical Coherence Tomography

2010 ◽  
Vol 41 (1) ◽  
pp. 67-71 ◽  
Author(s):  
Ugur E Altiparmak ◽  
Ibrahim Ersoz ◽  
Dicle Hazirolan ◽  
Burcin Koklu ◽  
Remzi Koklu ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Thickness Measurement ◽  
Optical Coherence ◽  
Foveal Thickness ◽  
The Impact

Choroid Thickness Measurement with RTVue Optical Coherence Tomography in Emmetropic Eyes, Mildly Myopic Eyes, and Highly Myopic Eyes

2012 ◽  
Vol 22 (6) ◽  
pp. 992-1000 ◽  
Author(s):  
Gabriel Coscas ◽  
Qienyuan Zhou ◽  
Florence Coscas ◽  
Ilaria Zucchiatti ◽  
Marco Rispoli ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Thickness Measurement ◽  
Optical Coherence
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