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Related Concept Videos

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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

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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 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 VI: Calcium -Scoring CT01:25

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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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A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
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Related Experiment Video

Updated: Feb 13, 2026

A Practical Guide for the Production and PET/CT Imaging of 68Ga-DOTATATE for Neuroendocrine Tumors in Daily Clinical Practice
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Vascular CT and MRI: a practical guide to imaging protocols.

D J Murphy1, A Aghayev2, M L Steigner2

  • 1Cardiovascular Imaging Program, Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA. murphy.84@gmail.com.

Insights Into Imaging
|March 16, 2018
PubMed
Summary

Designing effective vascular imaging protocols using computed tomography (CT) and magnetic resonance imaging (MRI) is essential for diagnosing diverse vascular diseases. This guide offers practical strategies for optimizing CT and MRI protocols for various vascular conditions.

Keywords:
AngiographyAtherosclerosisComputed tomography angiographyMagnetic resonance angiographyMagnetic resonance imaging

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Area of Science:

  • Radiology
  • Cardiovascular Imaging
  • Medical Imaging Techniques

Background:

  • Non-invasive cross-sectional imaging is vital for assessing vascular disease.
  • Vascular imaging presents challenges due to variable blood flow and patient cardiac output.
  • Diverse vascular pathologies necessitate tailored imaging protocols.

Purpose of the Study:

  • To provide a rationale for designing vascular imaging protocols.
  • To offer a practical guide for implementing computed tomography (CT) and magnetic resonance imaging (MRI) protocols.
  • To address challenges in vascular imaging protocol design.

Main Methods:

  • Review of current non-invasive cross-sectional imaging techniques.
  • Discussion of factors influencing vascular imaging protocol design, including blood flow dynamics and cardiac output.
  • Guidance on optimizing contrast media administration and reconstruction algorithms for CT angiography (CTA).
  • Highlighting the utility of magnetic resonance angiography (MRA) for specific vascular studies.

Main Results:

  • Bespoke imaging protocols are required for a wide spectrum of vascular pathologies.
  • Non-uniform blood velocity and variations in cardiac output complicate imaging acquisition.
  • Contrast media parameters critically influence arterial enhancement in CTA.
  • Iterative CT reconstruction enhances image quality and reduces radiation exposure.
  • MRA is particularly beneficial for small artery and venous imaging.

Conclusions:

  • Standardized yet adaptable protocols are crucial for accurate vascular imaging.
  • Optimizing CT and MRI protocols improves diagnostic yield for vascular diseases.
  • Understanding the impact of physiological variations and technical parameters is key to successful vascular imaging.