Transthoracic echocardiography is the firstline imaging modality for diagnosis and follow-up of patients with congenital heart defects due to its low cost, widespread availability, portability, ease of use, and excellent temporal-spatial resolution, reducing the need for diagnostic cardiac catheterization ...
COVID-19, an infectious coronavirus disease, caused a pandemic with countless deaths. From the outset, clinical institutes have explored computed tomography as an effective and complementary screening tool alongside the reverse transcriptase-polymerase c
Micro-CT is a 3D imaging technique utilizing X-rays to see inside an object, slice by slice. Micro-CT, also called microtomography or micro computed tomography, is similar to hospital CT or “CAT” scan imaging but on a small scale with greatly increased resolution. Samples can be imaged ...
1. Introduction Study on the micro-scale geomechanics and fluids transport processes in porous geomaterials (e.g., rock and soil) are crucial to many engineering applications, such as reservoir exploitation and CO2 sequestration. (Ghassemi, 2012; Fairhurst, 2017; Han et al., 2019; Tomac and ...
1. Introduction Electrocardiogram-synchronized, non-enhanced computed tomography (NECT) scans of the heart are the primary non-invasive imaging modality for assessing the presence and extent of coronary artery calcification [1], a direct measure of an individual’s burden of coronary atherosclerosis [...
Introduction,Appendicitis is commonly seen in medical 2、 practice, and its preoperative diagnosis is increasingly reliant on imaging, particularly computed tomography (CT), with clinical manifestations and laboratory test results playing a less important role.,,The imaging-based diagnosis of appendicitis ...
1、CT安全使用,医学工程中心 张帅,Introduction,Safety is the number one concern when you use a CT system. To protect yourself and others, you must be aware of the various potential hazards in a CT scanner and the techniques to control them.,purpose,Identify the various causes and types of ha...
CT Quality Control Standard protocol required same kVp, mAs, scan diameter, slice width, algorithm, focal spot, filter, etc When performed At regular intervals After major service tube change CT # of Water What do we check? Average (ideally 0 by definition) Standard Deviation (ideally 0) Flat...
Multi Slice CT(自学)MultiSliceCT多层面CT机 –Overview概述–NewconceptsinMSCT新内涵–Imagereconstruction图像重建–DoseinMSCT剂量–ArtifactsinMSCT伪影–AdvancedCTapplications新技术 2 3 MultisliceCTinthenearfuture 4 MultisliceCTinthenearfuture 5 Multi-SliceScanning多层面扫描 6 Double-volumescanning双层扫描 B...
盆腔内器官周围因有脂肪同隙的存在,CT检盘查能清晰分辨.但因直肠是肌性管道,自然充盈不良,不能形成良好的对比。因此难以对直肠癌的存在或侵犯范围予以确定.尤其是对直肠壁的轻度局限性增厚更难以与正常肠壁区分.这样就给直肠癌的早期发现和诊断带来困难。为了解决直肠自然充盈不良,灌肠造影剂又不易保留这一难题...