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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 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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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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 VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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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...
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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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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.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
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Computed tomography at every step: Long coronavirus disease.

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Over half of patients (52.5%) experienced persistent symptoms after Coronavirus disease (COVID-19). Chest CT severity scores predicted prognosis and correlated with prolonged infection and lingering symptoms.

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Area of Science:

  • Medical imaging
  • Infectious diseases
  • Pulmonology

Background:

  • Persistent symptoms after Coronavirus disease (COVID-19) are common.
  • Chest computed tomography (CT) is crucial for diagnosing COVID-19, assessing lung involvement, and predicting severity.
  • Understanding the frequency and predictors of persistent symptoms is important for patient management.

Purpose of the Study:

  • To determine the frequency of persistent symptoms in patients after COVID-19 hospitalization.
  • To correlate persistent symptoms with laboratory findings.
  • To evaluate the association between chest CT findings and symptom persistence.

Main Methods:

  • 116 patients hospitalized for COVID-19 were studied.
  • Patients were assessed for persistent symptoms at least 4 weeks post-diagnosis.
  • Demographic data, laboratory results, and chest CT severity scores were recorded.

Main Results:

  • 52.5% of patients reported at least one persistent symptom.
  • Common symptoms included fatigue, shortness of breath, and cough.
  • Lower CT severity scores were observed in patients without persistent symptoms.

Conclusions:

  • Persistent symptoms after COVID-19 are frequent and impact patient recovery.
  • Chest CT severity is a predictor of disease prognosis and correlates with symptom duration.
  • Laboratory markers (C-reactive protein, fibrinogen, anemia) and female sex are associated with certain persistent symptoms.