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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 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 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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Transformers01:26

Transformers

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A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Three-Winding Transformers01:19

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Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
In the per-unit equivalent circuit of a grounded Y-Y three-phase...
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Video Experimental Relacionado

Updated: Feb 20, 2026

Author Spotlight: Optimized Lung MRI Protocol with Computationally Efficient Reconstruction Methods
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Published on: September 6, 2024

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TranIU-Net: Tomografía Eléctrica Indicativa Basada en Transformadores de Desenrollado Implícito

Binchun Lu, Lidan Fu, Juntao Ren

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
    |February 18, 2026
    PubMed
    Resumen

    Este estudio presenta TranIU-Net, un novedoso Transformer de desenrollado profundo para mejorar la reconstrucción de imágenes. Supera las limitaciones de los métodos existentes integrando dependencias locales y no locales para una mayor precisión y diseño del sistema.

    Palabras clave:
    Tomografía EléctricaReconstrucción de ImágenesAprendizaje ProfundoRedes TransformerDesenrollado ProfundoVisión por Computadora

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    Área de la Ciencia:

    • Imagenología Médica
    • Visión por Computadora
    • Inteligencia Artificial

    Sus antecedentes:

    • Las redes de desenrollado profundo combinan enfoques impulsados por datos y dirigidos por modelos para la reconstrucción de imágenes.
    • Los métodos existentes enfrentan desafíos como iteraciones inadecuadas, campos receptivos limitados y aislamiento de los sistemas físicos.

    Objetivo del estudio:

    • Proponer TranIU-Net, una novedosa arquitectura Transformer de desenrollado implícito para mejorar la reconstrucción de imágenes.
    • Abordar las limitaciones de las redes de desenrollado actuales integrando dependencias locales y no locales y guiando el diseño del sistema.

    Principales métodos:

    • TranIU-Net desenrolla el algoritmo de gradiente proximal en una red entrenable con interpretabilidad estructural.
    • Un módulo Transformer incrustado captura información multiescala con campos receptivos híbridos y un estimador de significancia.
    • Un mapeo implícito garantiza la convergencia a una profundidad ilimitada con un costo de memoria constante.

    Principales resultados:

    • TranIU-Net demuestra un rendimiento superior en comparación con los métodos de última generación en la reconstrucción por tomografía eléctrica.
    • La arquitectura logra resultados de reconstrucción cuantitativos y cualitativos mejorados en varios escenarios.
    • El método cierra eficazmente la brecha entre los algoritmos de reconstrucción y los sistemas de imagen.

    Conclusiones:

    • TranIU-Net ofrece una solución robusta y eficiente para tareas de reconstrucción de imágenes.
    • La arquitectura propuesta avanza el campo al integrar técnicas avanzadas de aprendizaje profundo con principios dirigidos por modelos.
    • Este trabajo facilita una mejor calidad de reconstrucción al considerar las correlaciones intrínsecas de la imagen y el diseño del sistema.