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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 VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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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 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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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...
205
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

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The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
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Updated: Dec 20, 2025

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
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Updates in Vascular Computed Tomography.

Prabhakar Rajiah1

  • 1Department of Radiology, Mayo Clinic, 200 1st Street SW, Rochester, MN 55904, USA.

Radiologic Clinics of North America
|May 31, 2020
PubMed
Summary
This summary is machine-generated.

Computed tomography angiography (CTA) offers accurate and rapid imaging for vascular diseases. Advances focus on enhancing image quality, speed, and safety through dual-energy CT and deep learning.

Keywords:
CTCT angiographyDual energyMultienergy CTVascular

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Area of Science:

  • Radiology
  • Medical Imaging
  • Vascular Diagnostics

Background:

  • Computed tomography angiography (CTA) is essential for diagnosing vascular diseases due to its accuracy and speed.
  • Modern CTA provides high spatial and temporal resolution for detailed imaging.
  • Ongoing research aims to improve CTA's image quality, acquisition speed, and safety profile.

Purpose of the Study:

  • To review advancements in computed tomography angiography (CTA).
  • To highlight the role of dual-energy CT and deep learning in improving CTA.
  • To discuss strategies for enhancing image quality, reducing artifacts, and minimizing radiation and contrast doses.

Main Methods:

  • Review of current literature on CTA advancements.
  • Discussion of dual-energy computed tomography principles and applications.
  • Exploration of deep learning techniques in medical image analysis for CTA.

Main Results:

  • CTA routinely achieves high-resolution imaging.
  • Dual-energy CT enables material characterization, contrast optimization, and artifact reduction.
  • Deep learning facilitates classification, segmentation, quantification, and image enhancement in CTA.

Conclusions:

  • CTA is a vital tool for vascular imaging, with continuous technological improvements.
  • Dual-energy CT and deep learning represent significant advancements, enhancing diagnostic capabilities and patient safety.
  • Future developments will likely focus on further optimizing CTA protocols for dose reduction and improved diagnostic accuracy.