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Related Concept Videos

Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

134
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...
134
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

130
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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Updated: Nov 23, 2025

Hybrid PET/MRI Imaging of Alzheimer's Disease Based on 18F-AV-1451
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Imaging of Geographic Atrophy: A Practical Approach.

Gregor S Reiter1,2, Enrico Borrelli3,4, Rosa Dolz-Marco5

  • 1Department of Ophthalmology and Optometry, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria. gregor.reiter@meduniwien.ac.at.

Ophthalmology and Therapy
|May 5, 2025
PubMed
Summary
This summary is machine-generated.

Geographic atrophy (GA) detection and progression are being advanced by new imaging techniques. This review highlights key imaging modalities for evaluating GA in clinical and research settings.

Keywords:
Age-related macular degenerationFundus autofluorescenceGeographic atrophyImagingOptical coherence tomography

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Diseases

Background:

  • Geographic atrophy (GA) is a chronic degenerative condition affecting the macula, leading to irreversible vision loss.
  • It involves the retinal pigment epithelium, photoreceptors, and choriocapillaris.
  • Current understanding of GA progression is evolving with advancements in imaging technologies.

Purpose of the Study:

  • To provide a practical overview of key imaging modalities for geographic atrophy (GA).
  • To discuss the advantages and applicability of different imaging techniques in clinical and experimental settings.
  • To address the ongoing debate regarding essential and complementary imaging for GA detection and follow-up.

Main Methods:

  • Review of current literature on imaging modalities for geographic atrophy.
  • Analysis of advancements from 2D to 3D imaging and AI-based interpretation.
  • Discussion of the clinical and experimental utility of various imaging approaches.

Main Results:

  • Imaging markers for GA development and progression have significantly advanced.
  • Progress includes transition from 2D to 3D imaging and AI integration.
  • There is a need for consensus on essential "must-have" imaging versus complementary techniques.

Conclusions:

  • Key imaging modalities offer distinct advantages for assessing geographic atrophy.
  • The choice of imaging depends on clinical and experimental objectives.
  • Further discussion is needed to standardize imaging protocols for GA management and research.