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Computed Tomography

Computed Tomography

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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Updated: May 11, 2026

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

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

Published on: April 13, 2013

一种GPU加速的模糊方法,用于实时CT体积过.

Celia Tendero Delicado¹, Mónica Chillarón Pérez¹, Josep Arnal García²

¹Department of Computer Systems and Computation, Universitat Politècnica de València, Valencia, Valencia, Spain.

|January 2, 2025

概括

此摘要是机器生成的。

这项研究引入了医疗图像的实时模糊逻辑过器,减少CT扫描中的噪音,而不会影响诊断质量. GPU加速过器显著提高图像处理速度和质量,即使在低辐射剂量下也是如此.

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Hybrid µCT-FMT imaging and image analysis

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Last Updated: May 11, 2026

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

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

Published on: April 13, 2013

Hybrid µCT-FMT imaging and image analysis

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Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

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Published on: February 21, 2025

科学领域:

医疗成像医学成像
图像处理图像处理
计算科学计算科学

背景情况:

医学图像,特别是CT扫描,在采集和重建过程中可能会受到噪音的影响,从而影响诊断质量.
减少噪音往往需要更高的辐射剂量,对患者构成风险.
现有的过技术旨在减少噪音,而不会牺牲诊断信息.

研究的目的:

开发和实施医疗图像的实时过器,特别是CT扫描.
为了有效地减少混合高斯冲动噪声.
通过GPU并行实现显著的加快速度,用于实际的临床应用.

主要方法:

基于模糊逻辑的过方法的开发.
对图形处理单元 (GPU) 进行优化过器的实施.
处理CT扫描衰减系数以保存诊断信息.
从梅奥诊所数据库中对CT卷进行测试 (完全和低剂量模拟).

主要成果:

通过GPU并行实现了超过2700倍的加速度.
在不到0.1秒的时间内完成了300多片的过.
与最先进的算法和人工智能过器相比,过器表现出了竞争力的表现.
该方法实现了良好的图像质量和实时处理能力.

结论:

拟议的模糊逻辑波器有效地减少CT扫描中的噪声,同时保持诊断质量.
GPU实现使实时处理成为可能,使其适合临床使用.
该方法提供了一种可行的解决方案,可以在不影响图像完整性的情况下降低辐射剂量.