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Imaging Studies II: Ultrasonography

Imaging Studies II: Ultrasonography

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...

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...

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Related Experiment Video

Updated: Jun 27, 2026

Synchronous Triplanar Reconstruction Integrated with Color Doppler Mapping for Precise and Rapid Localization of Thyroid Lesions

Synchronous Triplanar Reconstruction Integrated with Color Doppler Mapping for Precise and Rapid Localization of Thyroid Lesions

Published on: February 9, 2024

Thyroid volumetric quantification: comparative evaluation between conventional and volumetric ultrasonography.

Roberto Malago¹, Mirko D'Onofrio, Marco Ferdeghini

¹Department of Radiology, Policlinico G. B. Rossi, University of Verona, Verona, Italy. rmalag@sirm.org

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine

|November 22, 2008

Summary

Volumetric ultrasonography (VUS) offers more accurate thyroid volume quantification than traditional B-mode ultrasonography. This improved accuracy is crucial for precise radiotherapy dosing in thyroid disease patients.

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Area of Science:

Medical Imaging
Radiology
Endocrinology

Background:

Thyroid volume is critical for radiotherapy dosing in conditions like thyroiditis and carcinoma.
Current clinical practice relies on B-mode ultrasonography using an ellipsoid formula based on three axes.
Accurate thyroid volume measurement is essential for effective treatment planning.

Purpose of the Study:

To compare the accuracy of thyroid volume calculation between standard B-mode ultrasonography and volumetric ultrasonography (VUS).
To evaluate the performance of VUS against pathologic anatomy (PA) as a gold standard.

Main Methods:

Prospective evaluation of 27 patients undergoing thyroidectomy.
Thyroid volume measured by B-mode ultrasonography (3-axis ellipsoid formula) and VUS using virtual organ computer-aided analysis.
Comparison of ultrasound measurements with post-operative pathologic anatomy (PA).

Main Results:

VUS analysis required more time (16.5 min) than B-mode (6 min).
B-mode ultrasonography showed significant variability compared to PA (-29.1% error).
VUS demonstrated significantly better accuracy, with a lower error rate compared to PA (-6.3% error).

Conclusions:

Volumetric ultrasonography (VUS) is a validated and more accurate method for thyroid volume quantification.
VUS provides superior accuracy compared to traditional B-mode ultrasonography for radiotherapy planning.
The study supports the clinical adoption of VUS for improved thyroid disease management.