With the dramatic increase of 3D imaging techniques, there is a great demand for new approaches in texture analysis of volumetric data. In this paper, we present a new approach for volumetric texture analysis using a runlength encoding matrix and its texture descriptors. We experiment with our approach on the volumetric data generated from two normal Computed Tomography (CT) studies of the ches...

AIMS AND BACKGROUND We designed the study to identify the clinical and dose-volumetric parameters associated with the risk of Child-Pugh score elevation in hepatocellular carcinoma patients treated with conformal radiation therapy. METHODS AND STUDY DESIGN All 161 hepatocellular carcinoma patients in the study underwent 4D-computed tomography simulation, and a dose-volume histogram was genera...

Dosis radiasi CT Scan menyumbang 70% Total dosis yang diterima dari pencitraan medis, tinggi atau rendahnya dapat meningkatkan risiko kanker. Untuk memastikan sebanding dengan tujuan medisnya, ke pasien perlu dioptimisasi menerapkan Diagnostic Reference Level (DRL) untuk mengoptimalkan perlindungan paparan medis bagi pasien. Evaluasi pemeriksaan MSCT Thorax dan penerapan DRL belum pernah dilaku...

  ABSTRACT   Background: While the benefits of Computed Tomography (CT) are well known in accurate diagnosis, those benefits are not risk free. CT is a device with higher patient dose in comparison with other conventional radiological procedures. Is the reduction of exposures by requiring optimization of CT procedures [a principle concern in radiological protection]? In this study, the radiatio...

PURPOSE To compare intracavitary brachytherapy dose estimation for organs at risk (bladder and rectum) based on semi-orthogonal reconstruction of radiographs on non-isocentric X-ray unit and Computed Tomography (CT) - based volumetric planning in cervical cancer. MATERIAL AND METHODS Bladder and rectal points as per International Commission on Radiation Units and Measurements (ICRU) report 38...