نتایج جستجو برای: computed tomography iterativeimage reconstruction

تعداد نتایج: 377600  

Background: Medical X-rays are the largest man-made source of public exposure to ionizing radiation. 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 radiation procedures. Objective: This study is aimed at evaluating radiation dose to patients from ...

Journal: :Journal of radiology and clinical imaging 2022

Background: The high anatomical complexity of maxillofacial defects caused by tumor can pose a formidable challenge for clinicians when designing an appropriate plan surgical reconstruction. intention this work was to restore the complex anatomy with maximum possible facial functionality and aesthetics patient. Based on medical images generated Computed Tomography (CT) scan optimal therapeutic ...

محمدزاده, زهرا, ابراهیمی, معصومه , بابازاده, فرامرز ,

Introduction: Central giant cell granuloma (CGCG) is a relatively rare and non neoplastic tumor with unclear exact etiology that is reported in children. Cone beam computed tomography (CBCT) technique for precise diagnosis and treatment of the jaw lesions is recommended in the recent years. The object of this case-report study is to use CBCT in the diagnosis and treatment of CGCG. Case Repor...

Journal: :Numerische Mathematik 2004
Andreas Rieder Thomas Schuster

The approximate inverse is a powerful tool for solving first kind operator equations in a stable way. Its abstract convergence and stability theory developed in our articles [SIAM J. Numer. Anal., 37, 1909-1929,2000] and [Math. Comp., 72, 1399-1415, 2003] is applied to the reconstruction problem of 3D-vector field tomography resulting in a reconstruction algorithm of filtered backprojection typ...

2014
Yan Xiong Yun Lang Chongqi Tu Hong Duan

The patient, a 16-year-old girl, was admitted to our hospital with complaints of right hip pain and claudication. Her past medical history indicated that 2 years earlier she had undergone enucleation of her left eye for a primary choroidal melanoma. Imaging studies revealed a osteolytic destruction with soft tissue mass involving the right hemipelvis (zone I-II). Single-photon emission computed...

Journal: :Journal of hand surgery 2004
M A Bogdan M B Klein G D Rubin T R McAdams J Chang

Computed tomography angiography is a new technique that provides high-resolution, three-dimensional vascular imaging as well as excellent bone and soft tissue spatial relationships. The purpose of this study was to examine the use of computed tomography angiography in planning upper extremity reconstruction. Seventeen computed tomography angiograms were obtained in 14 patients over a 20-month p...

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