نتایج جستجو برای: Synthetic CT

تعداد نتایج: 275165  

Introduction: Radiation therapy planning (RTP) is one of the clinical applications in which both CT scan and MRI are used. MR and CT images are applied to determine the target volume and calculation of dose distribution, respectively. In addition, using two imaging modalities increases the department workload and cost. In this study, an algorithm was presented to create synthet...

Introduction: Nowadays, magnetic resonance imaging (MRI) in combination with computed-tomography (CT) is increasingly being used in radiation therapy planning. MR and CT images are applied to determine the target volume and calculate dose distribution, respectively. Since the use of these two imaging modalities causes registration uncertainty and increases department w...

2009
Steven G. Adie Brynmor J. Davis Tyler S. Ralston Daniel L. Marks P. Scott Carney Stephen A. Boppart

2013
Feng Li Martin Rajchl James A. White Aashish Goela Terry M. Peters

Off-pump beating heart surgery requires a guidance system that would show both pertinent cardiac anatomy and dynamic motion both periand intra-operatively. Optimally, the guidance system should show high quality images and models in a cost-effective way and can be easily integrated into standard clinical workflow. However, such a goal is difficult to accomplish by a single image modality. In th...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2014
Snehashis Roy Wen-Tung Wang Aaron Carass Jerry L Prince John A Butman Dzung L Pham

UNLABELLED Integrated PET/MR systems are becoming increasingly popular in clinical and research applications. Quantitative PET reconstruction requires correction for γ-photon attenuations using an attenuation coefficient map (μ map) that is a measure of the electron density. One challenge of PET/MR, in contrast to PET/CT, lies in the accurate computation of μ maps. Unlike CT, MR imaging measure...

2017
Agisilaos Chartsias Thomas Joyce Rohan Dharmakumar Sotirios A. Tsaftaris

This paper demonstrates the potential for synthesis of medical images in one modality (e.g. MR) from images in another (e.g. CT) using a CycleGAN [25] architecture. The synthesis can be learned from unpaired images, and applied directly to expand the quantity of available training data for a given task. We demonstrate the application of this approach in synthesising cardiac MR images from CT im...

Gholam Reza Komeili, Zahra Samadi Noshahr,

Neuropathic pain, caused by a lesion or disease affecting the somatosensory nervous system, has a substantial effect on quality of patient life. Given that the synthetic drugs can produce serious side effects they are not suitable for long-term use, therefore it is assumed that herbal medicine can be effective as an alternative to Analgesic agent. The aim of this study was evaluation the analge...

Journal: :Genetics 1997
H Uemura M Koshio Y Inoue M C Lopez H V Baker

To study the interdependence of Gcr1p and Rap1p, we prepared a series of synthetic regulatory sequences that contained various numbers and combinations of CT-boxes (Gcr1p-binding sites) and RPG-boxes (Rap1p-binding sites). The ability of the synthetic oligonucleotides to function as regulatory sequences was tested using an ENO1-lacZ reporter gene. As observed previously, synthetic oligonucleoti...

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