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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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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...
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Imaging Studies III: Computed Tomography01:27

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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 for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Positron Emission Tomography01:29

Positron Emission Tomography

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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.
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Imaging Studies I: CT and MRI01:14

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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.
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Computed Tomography (CT) scan:
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Electron Microscope Tomography and Single-particle Reconstruction01:07

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
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Related Experiment Video

Updated: Mar 22, 2026

Dual-phase Cone-beam Computed Tomography to See, Reach, and Treat Hepatocellular Carcinoma during Drug-eluting Beads Transarterial Chemo-embolization
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[Cone beam computed tomography: is more also better?].

P F van der Stelt

    Nederlands Tijdschrift Voor Tandheelkunde
    |April 14, 2016
    PubMed
    Summary

    Cone beam computed tomography (CBCT) offers 3D imaging for maxillofacial defects but involves higher radiation doses and potential incidental findings. Dentists need specialized knowledge to interpret CBCT scans effectively.

    Area of Science:

    • Dentistry and Oral Health
    • Radiology and Imaging Technologies
    • Maxillofacial Surgery

    Background:

    • Cone beam computed tomography (CBCT) has been utilized in dentistry for approximately two decades.
    • CBCT provides crucial three-dimensional visualization for assessing maxillofacial defects.

    Purpose of the Study:

    • To highlight the importance of specialized knowledge for CBCT device users in dentistry.
    • To address the implications of CBCT's higher radiation dose compared to conventional radiography.
    • To discuss the potential for incidental findings outside a dentist's typical scope of practice.

    Main Methods:

    • Review of CBCT applications and characteristics in dental imaging.
    • Analysis of radiation dose considerations for CBCT examinations.

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  • Evaluation of the scope of imaging and potential for unexpected discoveries.

    • Main Results:

    • CBCT offers significant advantages in visualizing complex 3D maxillofacial structures.
    • CBCT examinations involve a higher radiation dose than conventional dental radiography.
    • The expanded field of view in CBCT may reveal abnormalities beyond the dentist's primary expertise.

    Conclusions:

    • The benefits of CBCT in maxillofacial imaging necessitate careful consideration of its drawbacks.
    • Dentists utilizing CBCT require enhanced knowledge to manage higher radiation doses and interpret incidental findings.
    • Proper training is essential for the safe and effective application of CBCT technology in dental practice.