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Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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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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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 Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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Related Experiment Video

Updated: Jul 19, 2025

High-Resolution Three-Dimensional Imaging of the Footpad Vasculature in a Murine Hindlimb Gangrene Model
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Diabetic Foot Ulcer Imaging: An Overview and Future Directions.

Anuradha Godavarty1, Kevin Leiva1, Noble Amadi1

  • 1Optical Imaging Laboratory, Department of Biomedical Engineering, Florida International University, Miami, FL, USA.

Journal of Diabetes Science and Technology
|August 18, 2023
PubMed
Summary
This summary is machine-generated.

Advanced imaging techniques offer objective assessments for diabetic foot ulcers (DFUs), complementing clinical evaluations. New spatio-temporal near-infrared (NIR) imaging maps oxygenation patterns, aiding DFU management.

Keywords:
diabetic foot ulcersimagingmulti-modalopticalphysiological imagingwound healingwound monitoring

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Area of Science:

  • Medical Imaging
  • Diabetology
  • Wound Care

Background:

  • Diabetic foot ulcers (DFUs) are a common complication, affecting one in three people with diabetes.
  • Clinical assessment of DFUs is subjective; objective imaging is crucial for effective treatment.
  • Conventional imaging aids in diagnosing infections, bone involvement, deformities, and vascular issues in DFUs.

Purpose of the Study:

  • To summarize various imaging techniques used for assessing diabetic foot ulcers.
  • To highlight the role of optical imaging in evaluating tissue oxygenation and perfusion.
  • To introduce a novel spatio-temporal near-infrared (NIR) imaging approach for DFU assessment.

Main Methods:

  • Review of conventional imaging modalities (CT, MRI, PET, SPECT, ultrasound).
  • Discussion of optical imaging techniques: hyperspectral, multispectral, diffuse reflectance spectroscopy, NIR spectroscopy, laser Doppler, spatial frequency domain imaging.
  • Introduction of a spatio-temporal NIR-based imaging approach for oxygenation flow mapping.

Main Results:

  • Conventional imaging effectively diagnoses structural and vascular complications.
  • Optical imaging modalities provide insights into tissue oxygenation and perfusion.
  • The novel NIR approach maps spatio-temporal oxygenation asynchrony in DFUs.

Conclusions:

  • Imaging significantly enhances the objective assessment of DFUs.
  • Advanced optical and NIR techniques offer detailed physiological insights.
  • Future DFU imaging should focus on low-cost, portable, multi-modal platforms for comprehensive wound management.