نتایج جستجو برای: normal tissue lesions
تعداد نتایج: 1480561 فیلتر نتایج به سال:
Background—Transthoracic epicardial catheter ablation is an emerging catheter ablation strategy being used clinically at increasing frequency. However, the efficacy of standard RF ablation on the epicardial surface of the heart is hindered by (1) the lack of convective cooling of the ablation electrode and (2) the varying presence of epicardial adipose tissue interposed between the ablation ele...
BACKGROUND Transthoracic epicardial catheter ablation is an emerging catheter ablation strategy being used clinically at increasing frequency. However, the efficacy of standard RF ablation on the epicardial surface of the heart is hindered by (1) the lack of convective cooling of the ablation electrode and (2) the varying presence of epicardial adipose tissue interposed between the ablation ele...
"Stereotactic" is an exact radiotherapy treatment modality which implements invasive and non-invasive facilities for improving precise dose delivery. Stereotactic refers to three-dimensional localization of a specific point in space by a unique set of coordinates that relate to a fixed external reference frame. An accurate delivery of radiation is attainable using these techniques with high pre...
Introduction: Planning target volume (PTV) is generated from internal treatment volume (ITV) using four-dimensional computed tomography (4D-CT) for enhanced therapeutic gain in the stereotactic body radiotherapy for lung lesions (SBRT-Lung). This study aimed to propose a strategy to generate ITV on multiple-phase 3D-CT and enhance therapeutic gain in SBRT-Lung. <stron...
Approximately 23,000 new gastric cancer cases and 12,000 associated deaths occur annually in the United States. Intestinal metaplasia and gastric epithelial dysplasia are precursor lesions to gastric adenocarcinoma, but are not readily detectable clinically, radiographically, or endoscopically. A noninvasive method of precursor detection would require the ability to distinguish precursor lesion...
breast cancer is common and is considered second cause of cancer related mortality in females. regarding importance of breast cancer, more investigation in this field is recommended. for many years investigators believed that neoplasms were not innervated but new findings have proved otherwise. this descriptive study was carried out to compare number of nerve fibers in benign, malignant and nor...
Quantitative estimation of the acute ischemic infarct is crucial to improve neurological outcomes patients with stroke symptoms. Since density lesions subtle and can be confounded by normal physiologic changes, anatomical asymmetry provides useful information differentiate healthy brain tissue. In this paper, we propose a symmetry enhanced attention network (SEAN) for segmentation. Our proposed...
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