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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Imaging Studies III: Computed Tomography01:27

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...
Goiter01:27

Goiter

Goiter refers to an abnormal enlargement of the thyroid gland that may appear as a diffuse goiter (uniform enlargement) or nodular (single or multiple nodules). Functionally, it is classified as nontoxic (normal/low hormone levels) or toxic (excess hormone production).PathophysiologyDiffuse thyroid enlargement typically results from prolonged stimulation by thyroid-stimulating hormone (TSH) or TSH-like agents, commonly seen in hypothyroidism or iodine deficiency. In contrast, in hyperthyroid...

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Related Experiment Video

Updated: Jul 7, 2026

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images
04:23

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images

Published on: April 21, 2023

Scanning techniques to assess thyroid nodules.

J L Quinn, R E Henkin

    Annual Review of Medicine
    |January 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Thyroid scans are crucial for solitary thyroid nodules. Combining technetium-99m pertechnetate and iodine-123 imaging provides more diagnostic information than using either radionuclide alone.

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    Area of Science:

    • Nuclear medicine
    • Endocrinology
    • Diagnostic imaging

    Background:

    • Solitary thyroid nodules require accurate diagnosis.
    • Thyroid scans are a common, though nonspecific, diagnostic tool.
    • Evaluating diagnostic methods for thyroid nodules is essential.

    Purpose of the Study:

    • To assess the utility of dual radionuclide thyroid imaging.
    • To compare the diagnostic value of combined 99m-Tc pertechnetate and 123-I imaging.
    • To explore the potential of complementary modalities like ultrasonography and thermography.

    Main Methods:

    • Dual radionuclide imaging was performed using 99m-Tc pertechnetate and 123-I.
    • Comparison of information obtained from single vs. dual radionuclide imaging.
    • Review of complementary diagnostic modalities (ultrasonography, thermography).

    Main Results:

    • Dual radionuclide imaging provides more comprehensive information than single radionuclide imaging.
    • The combined use of 99m-Tc pertechnetate and 123-I enhances diagnostic insights.
    • The diagnostic role of ultrasonography and thermography requires further clarification.

    Conclusions:

    • Dual radionuclide thyroid imaging is a valuable tool for solitary thyroid nodules.
    • Combining 99m-Tc pertechnetate and 123-I improves diagnostic accuracy.
    • Further research is needed to define the role of ultrasonography and thermography in nodule evaluation.