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Ultrasonography

Ultrasonography

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 a...

Imaging Studies III: Computed Tomography

Imaging Studies III: Computed Tomography

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...

Imaging Studies VII: Vascular Imaging

Imaging Studies VII: Vascular Imaging

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...

Imaging Studies I: CT and MRI

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...

Imaging Studies for Cardiovascular System III: X-Ray

Imaging Studies for Cardiovascular System III: X-Ray

The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...

Imaging Studies IV: Magnetic Resonance Imaging

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

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Related Experiment Video

Updated: May 30, 2026

Automated Joint Space Detection Improves Bone Segmentation Accuracy

Automated Joint Space Detection Improves Bone Segmentation Accuracy

Published on: November 28, 2025

[Imaging: new techniques used in osteoarthritis].

Angélica Vargas¹, Araceli Bernal González, Carlos Pineda Villaseñor

¹Departamento de Reumatología. Instituto Nacional de Cardiología Ignacio Chávez. México DF. México.

Reumatologia Clinica

|July 29, 2011

Summary

Developing sensitive imaging methods is crucial for assessing osteoarthritis. This review compares conventional radiography, magnetic resonance imaging, and ultrasonography for evaluating joint damage.

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Area of Science:

Orthopedics and Sports Medicine
Radiology
Biomedical Imaging

Context:

Osteoarthritis diagnosis and management require sensitive imaging techniques.
Accurate assessment of anatomical damage is critical for patient outcomes.
Current imaging modalities have limitations in evaluating osteoarthritis.

Purpose:

To review and compare the main imaging methods for assessing anatomical damage in osteoarthritis.
To highlight the advantages and disadvantages of conventional radiography, MRI, and ultrasonography.
To inform the selection of appropriate imaging techniques for osteoarthritis assessment.

Summary:

Conventional radiography is accessible but cannot assess non-calcified tissues.
Magnetic resonance imaging (MRI) offers detailed soft tissue visualization but is costly and less accessible.
Ultrasonography is a cost-effective and accurate method for evaluating articular and extra-articular structures, despite limitations in acoustic window and joint space width assessment.

Impact:

Provides a comparative overview of key imaging techniques for osteoarthritis.
Highlights the strengths and weaknesses of each modality for anatomical damage assessment.
Aids clinicians in choosing the most suitable imaging method based on accessibility, cost, and diagnostic needs.