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Related Concept Videos

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Computed Tomography01:10

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Imaging Studies II: Ultrasonography01:24

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IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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Related Experiment Video

Updated: May 1, 2026

Thinned-skull Cortical Window Technique for In Vivo Optical Coherence Tomography Imaging
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[Full depth imaging: a new imaging technique using optical coherence tomography (OCT)].

N Celik1, S Pollithy1, S Dithmar1

  • 1Universitäts-Augenklinik, Heidelberg.

Klinische Monatsblatter Fur Augenheilkunde
|April 10, 2014
PubMed
Summary
This summary is machine-generated.

Full Depth Imaging (FDI) mode in spectral domain optical coherence tomography (SD-OCT) provides high-contrast images of the vitreoretinal and choroidal structures. This new technique aids in visualizing both vitreous and choroidal pathologies simultaneously.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Imaging

Context:

  • Spectral domain optical coherence tomography (SD-OCT) is a key imaging modality in ophthalmology.
  • Conventional SD-OCT and enhanced depth imaging (EDI) have limitations in simultaneously visualizing superficial and deep ocular structures.
  • Evaluating new acquisition modes for SD-OCT is crucial for comprehensive retinal and choroidal diagnostics.

Purpose:

  • To evaluate the Full Depth Imaging (FDI) mode of SD-OCT for high-contrast visualization of vitreoretinal and choroidal structures.
  • To compare the efficacy of FDI mode against conventional SD-OCT and EDI modes.
  • To assess the potential of FDI mode in diagnosing vitreous and choroidal pathologies.

Summary:

  • The FDI mode combines averaged conventional SD-OCT scans of the vitreoretinal interface with EDI OCT scans.
  • This technique produces a single, high-contrast image displaying the posterior vitreous, retina, and choroid.
  • FDI mode successfully illustrated vitreoretinal and deep choroidal structures with high contrast in patients with various retinal diseases.

Impact:

  • FDI mode offers simultaneous contrast imaging of the posterior vitreous, retina, and choroid.
  • It expands the diagnostic capabilities of SD-OCT beyond the retina-retinal pigment epithelium complex to include vitreous and choroidal pathologies.
  • While currently a manual technique with limitations (single linear scan, not automated), FDI holds promise for enhanced routine diagnostics.