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Related Concept Videos

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...
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...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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...
Imaging Studies I: CT and MRI01:14

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 VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
Imaging Studies for Cardiovascular System III: X-Ray01:20

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...

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Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry
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Aging changes of the midfacial fat compartments: a computed tomographic study.

Matthias Gierloff1, Christine Stöhring, Thomas Buder

  • 1Kiel and Erlangen, Germany From the Department of Oral and Maxillofacial Surgery, the Department of Diagnostic Radiology, Christian-Albrechts-University, and the Institute of Anatomy, University of Erlangen-Nuremberg.

Plastic and Reconstructive Surgery
|September 15, 2011
PubMed
Summary

Facial fat compartments migrate downward and shift volume during aging, impacting facial rejuvenation. This study quantified these age-related anatomical changes using computed tomography in cadavers.

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Area of Science:

  • Anatomy
  • Radiology
  • Gerontology

Background:

  • Facial rejuvenation aims to restore natural volume distribution.
  • Aging significantly alters midfacial fat compartment anatomy.
  • Understanding these changes is crucial for effective anti-aging treatments.

Purpose of the Study:

  • To develop a radiographic method for measuring midfacial fat compartments.
  • To compare midfacial fat compartment anatomy between younger and older cadavers.
  • To identify age-related anatomical differences in facial fat distribution.

Main Methods:

  • Computed tomography (CT) scans of 12 nonfixed human cadaver heads were analyzed.
  • Cadavers were divided into two age groups (54-75 years and 75-104 years).
  • Sagittal diameters and distances to the infraorbital rim were measured to assess volume and sagging.

Main Results:

  • CT scans accurately depicted facial fat compartments and aging changes.
  • Older cadavers showed increased distance between fat compartments and the infraorbital rim.
  • Volume shifts were observed, with higher lower third and smaller upper third sagittal diameters in older individuals.

Conclusions:

  • Aging causes inferior migration and volume redistribution of midfacial fat compartments.
  • Specific changes include volume loss in deep medial cheek fat and altered buccal fat pad.
  • These findings provide insights into the anatomical basis of facial aging.