نتایج جستجو برای: high resolution pet

تعداد نتایج: 2229984  

2015
Douglas H. Phanstiel Alan P. Boyle Nastaran Heidari Michael P. Snyder Inanc Birol

Motivation: Chromatin Interaction Analysis by Paired-End Tag sequencing (ChIA-PET) is an established method for detecting genome-wide looping interactions at high resolution. Current ChIA-PET analysis software packages either fail to correct for non-specific interactions due to genomic proximity or only address a fraction of the steps required for data processing. We present Mango, a complete C...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1393

چکیده: مقدمه و هدف: آگاهی از آناتومی کانال خصوصاً در آناتومی های پیچیده مثل کانال های c-shape برای انجام یک درمان موفق ضروری می باشد. از آنجا که در کانال های c-shape نحوه ارتباط از کرونال تا آپیکال در نحوه درمان انجام شده مهم است تشخیص وضعیت آناتومیک این کانال ها می تواند اهمیت زیادی داشته باشد. در این مطالعه، مقایسه ای بین پنج روش مختلف برای تشخیص آناتومی c-shape انجام گرفته تا روشی دقیق برای...

2014
Craig S Levin Floris Jansen Tim Deller Sri Harsha Maramraju Alex Grant Andrei Iagaru

Stanford University, USA A time-of-flight (TOF)-PET/MR research system installed at Stanford will be used to test the hypotheses that (a) it is possible to acquire simultaneous TOF-PET and 3T MR data while achieving uncompromised performance in both modalities and (b) simultaneous TOF-PET/MR is a tool for multi-parameter characterization of disease. In this paper we will describe the design as ...

Journal: :Physics in medicine and biology 2004
S Surti J S Karp G Muehllehner

The main thrust for this work is the investigation and design of a whole-body PET scanner based on new lanthanum bromide scintillators. We use Monte Carlo simulations to generate data for a 3D PET scanner based on LaBr3 detectors, and to assess the count-rate capability and the reconstructed image quality of phantoms with hot and cold spheres using contrast and noise parameters. Previously we h...

Journal: :iranian journal of allergy, asthma and immunology 0
mostafa ghanei henry d. tazelaar ali amini hari mohammadreza peyman hassan mohammad hoseini akbari jafar aslani

intractable asthma is a challenging clinical problem. this study was conducted to determine whether a subset of patients with intractable asthma may be misdiagnosed and have a form of bronchiolitis instead and also to determine the effectiveness of macrolide therapy in these patients. seventy six patients with intractable asthma were re-treated with recommended maximal doses of oral prednisolon...

Journal: :Bioinformatics 2015
Douglas H. Phanstiel Alan P. Boyle Nastaran Heidari Michael P. Snyder

MOTIVATION Chromatin Interaction Analysis by Paired-End Tag sequencing (ChIA-PET) is an established method for detecting genome-wide looping interactions at high resolution. Current ChIA-PET analysis software packages either fail to correct for non-specific interactions due to genomic proximity or only address a fraction of the steps required for data processing. We present Mango, a complete Ch...

Journal: :Physics in medicine and biology 2010
M E Daube-Witherspoon S Surti A Perkins C C M Kyba R Wiener M E Werner R Kulp J S Karp

A prototype time-of-flight (TOF) PET scanner based on cerium-doped lanthanum bromide [LaBr(3) (5% Ce)] has been developed. LaBr(3) has a high light output, excellent energy resolution and fast timing properties that have been predicted to lead to good image quality. Intrinsic performance measurements of spatial resolution, sensitivity and scatter fraction demonstrate good conventional PET perfo...

2012

Positron emission tomography (PET) is a molecular imaging method that images the human body non-invasively from a functional, biochemical perspective. PET is extraordinarily sensitive and can detect minute (femtomolar) quantities of radioactive tracers. However, because of photon scattering, the images do not have as high spatial resolution as CT or MRI nor do they provide much anatomical infor...

Journal: :Nuclear medicine communications 2014
Naoki Kubo Kenji Hirata Kazuki Matsuzaki Yuichi Morimoto Wataru Takeuchi Naoya Hattori Tohru Shiga Yuji Kuge Nagara Tamaki

OBJECTIVE PET using semiconductor detectors provides high-quality images of the human brain because of its high spatial resolution. To quantitatively evaluate the delineation of image details in clinical PET images, we used normalized mutual information (NMI) to quantify the similarity with images obtained through MRI. NMI is used to evaluate image quality by determining similarity with a refer...

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