噪声网 (NoiseNet) 是一个全自动的噪声评估工具,可以识别非诊断性CCTA检查
Emma Palmquist1,2, Jennifer Alvén3, Michael Kercsik4
1Department of Radiology, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden.
The international journal of cardiovascular imaging
|May 15, 2024
概括
一个名为NoiseNet的新算法准确地测量了冠状动脉CT血管造影 (CCTA) 中的图像噪声和信号对噪声比 (SNR). 该工具可以自动识别图像质量差的CCTA扫描,提高诊断准确度.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 人工智能的人工智能
背景情况:
- 图像噪声和血管衰减显著影响冠状动脉计算机断层扫描血管造影 (CCTA) 的质量和诊断准确性.
- 对这些因素的客观评估对于可靠的CCTA扫描解释至关重要.
研究的目的:
- 开发和评估一个自动化算法"NoiseNet",用于测量CCTA中的噪声和减弱.
- 评估NoiseNet基于图像质量指标识别非诊断性CCTA检查的能力.
主要方法:
- 在244个CCTA研究中训练了一个3DU-Net模型NoiseNet,以分割大动脉根并测量衰减 (HU) 和噪声 (HUsd).
- 该算法计算信号噪声比 (SNR),并对529项CCTA研究进行了测试,这些研究按诊断质量分类.
- 通过将NoiseNet测量与手动评估进行比较来验证性能.
主要成果:
- 噪声网络与手动测量噪声 (r=0.948) 和SNR (r=0.948) 之间有很好的相关性.
- 在诊断子组中观察到噪声和SNR水平的显著差异 (p < 0.001).
- 接收器操作特征 (ROC) 分析显示,非诊断性研究的预测值很高 (噪声AUC=0.73,SNRAUC=0.80).
结论:
- 噪声网准确地量化了CCTA中的噪声和SNR,与手动测量相对应.
- 使用NoiseNet的自动图像质量评估可以有效地识别具有低于最佳图像质量的CCTA研究.
- 这项技术有可能提高CCTA解释的可靠性和效率.
相关概念视频
Computed Tomography
7.6K
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...
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...
7.6K
Imaging Studies for Cardiovascular System IV: CMRI
529
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
529
Imaging Studies for Cardiovascular System V: CT
644
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...
644
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
954
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...
954
Acute Coronary Syndrome III: Diagnostic Studies
493
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
493
Imaging Studies III: Computed Tomography
879
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...
879


