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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

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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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Author Spotlight: Enhancing Transplantation Research Through MicroCT Angiography in Murine Models
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Anatomic Suitability for Transcaval Access Based on Computed Tomography.

Robert J Lederman1, Adam B Greenbaum2, Toby Rogers1

  • 1Cardiovascular and Pulmonary Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, Bethesda, Maryland.

JACC. Cardiovascular Interventions
|January 7, 2017
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) planning enhances transcaval access for large device implantation, even with challenging iliofemoral arteries. This method optimizes planning for procedures like transcatheter aortic valve replacement and ventricular assist devices.

Keywords:
aorto-cavalcaval-aorticcomputed tomographystructural heart diseasetranscatheter aortic valve replacementtranscatheter electrosurgerytranscaval

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Area of Science:

  • Vascular Surgery
  • Interventional Radiology
  • Medical Imaging

Background:

  • Transcaval access is a proven technique for large device delivery.
  • Successful applications include transcatheter aortic valve replacement (TAVR), ventricular assist devices (VADs), and thoracic endovascular aortic aneurysm repair (TEVAR).

Purpose of the Study:

  • To provide a CT-based planning guide for transcaval access and closure.
  • To optimize procedural success and patient selection for transcaval interventions.

Main Methods:

  • Detailed CT segmentation of the aorta and inferior vena cava.
  • Identification of calcium-free crossing targets and optimal fluoroscopic angles.
  • Assessment for anatomical obstacles and planning of bailout strategies.

Main Results:

  • Revised classification of transcaval feasibility based on recent procedural outcomes.
  • Identification of critical measurements (aortic diameter, target distance) for operator guidance.
  • Demonstration of transcaval access utility in patients with small or diseased iliofemoral arteries.

Conclusions:

  • CT-based planning simplifies transcaval access and closure procedures.
  • This approach expands candidacy for large percutaneous aortic interventions.
  • Enhanced planning improves safety and efficacy for operators and imaging specialists.