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相关概念视频

Deconvolution01:20

Deconvolution

186
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
186
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

275
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...
275
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

26
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...
26
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

41
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...
41
Computed Tomography01:10

Computed Tomography

4.6K
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...
4.6K

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相关实验视频

Updated: Jul 16, 2025

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography
04:48

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Published on: November 30, 2022

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监督学习用于CT无高分辨率参考图像的Denoising和Deconvolution.

Andrew D Missert, Scott S Hsieh, Andrea Ferrero

    medRxiv : the preprint server for health sciences
    |September 11, 2023
    PubMed
    概括
    此摘要是机器生成的。

    这项研究引入了一种用于CT成像的新型卷积神经网络 (CNN),可以提高空间分辨率并减少噪声,而不需要高分辨率的参考数据. 这种新方法提高了图像质量和细节,特别是对于像结石这样的复杂结构.

    科学领域:

    • 医疗成像医学成像
    • 人工智能的人工智能

    背景情况:

    • 卷积神经网络 (CNN) 对于CT超分辨率通常需要高分辨率的参考数据.

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    Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images
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    Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images

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  • 传统的CT图像增强解卷方法往往会放大噪声,降低图像质量.
  • 结论:

    • 开发的CNN方法提高了空间分辨率,并减少了CT图像中的噪声.
    • 这种技术消除了对CT超分辨率的高分辨率参考图像的需求.
    • 该方法在改善各种临床应用中的诊断准确性方面具有前景.