Comparison between computerised lung SPECT-CT and noncontrast thoracic HRCT for quantitative analysis of post-acute COVID-19 pulmonary vascular pruningdoi:10.1183/23120541.00076-2023Fetita, CatalinRicheux, JeanDidier, AntoineMaury, MathildeFlint, Jasper...
Effect of contrast enhanced CT scans on heterogeneity corrected dose computations in the lung. The aim of this study was to investigate and, if possible, compensate for the effect of intravenous contrast-enhanced CT scans on the treatment planning do......
Lung disorders and nodules may be effectively evaluated with PET. It has an outstanding capacity for detecting metastases [81]. Figure 7 displays a chest CT scan of a lung nodule compared to a PET image, which provides a more improved view. The image was obtained from the Openi website, ...
The CT dose indices were 0.68, 1.7, 3.4, 5.2, 6.8, and 11.9 mGy. Each cadaveric lung was scanned in one slice at three different position levels. So we acquired three images per cadaveric lung. Scan mode was helical scan and acquired CT images were axial image. All CT images with ...
Small cell lung cancerSurvivalTexture analysisThe purpose of this study was to investigate the relationship between x-ray computed tomography (CT) texture features of small cell lung cancer (SCLC) and the survival of the patients. Eighty-eight......
This paper presents a novel semi-automatic method for lung segmentation in thoracic CT datasets. The fully three-dimensional algorithm is based on a level set representation of an active surface and integrates texture features to improve its robustness. The method’s performance is enhanced by the ...
【Methods】 One hundred and ninety five cases of pulmonary disease diagnosed by pathology in our hospital from October 2004 to October 2006 were retrospectively analyzed.Among them,8 cases with the "broom sign" were contrasted by the chest and CT comparative analysis,and their compositions were ...
CT can confirm whether there are associated abnormalities such as lymphadenopathy, pleural effusion and/or empyema, and whether any cavities are forming. Furthermore, a CT scan can direct a bronchoalveolar lavage or guide a percutaneous or transbronchial lung biopsy. It also allows any underlying ...
The good side of the frequency domain technique is that the image contrast can be enhanced without amplification of noise. In this paper we utilized discrete cosine transform to produce low and high frequency component of an input image. We can compute the DCT of a input scan image dx,y of...
This dataset consists of ten thoracic 4D CT images acquired as part of the radiotherapy planning process for the treatment of thoracic malignancies. In our study we are only using the inspiration and expiration phase of the 4D image, i.e., two of the ten images per 4D scan. The in-plane...