Results 51 to 60 of about 95,958 (315)

SPECT Angle Interpolation Based on Deep Learning Methodologies [PDF]

arXiv, 2021
A novel method for SPECT angle interpolation based on deep learning methodologies is presented. Projection data from software phantoms were used to train the proposed model. For evaluation of the efficacy of the method, phantoms based on Shepp Logan, with various noise levels added were used, and the resulting interpolated sinograms are reconstructed ...
arxiv  

V/Q Scanning Using SPECT and SPECT/CT [PDF]

Journal of Nuclear Medicine, 2013
Planar ventilation-perfusion (V/Q) scanning is often used to investigate pulmonary embolism; however, it has well-recognized limitations. SPECT overcomes many of these through its ability to generate 3-dimensional imaging data. V/Q SPECT has higher sensitivity, specificity, and accuracy than planar imaging and a lower indeterminate rate.
Paul Roach, Dale L. Bailey, Geoffrey Schembri   +2 more
openaire   +3 more sources

Artificial Intelligent‐Enhanced Metabolite Profiling for Intraoperative IDH1 Genotyping in Glioma Using an Orthogonally Responsive SERS Probe

Advanced Science, EarlyView.
This study presents a novel approach for intraoperative identification of the IDH1 genotype in glioma patients using a surface‐enhanced Raman scattering (SERS) probe to measure glutathione and hydrogen peroxide. By integrating AI‐driven deep learning algorithms, the method achieves rapid and accurate genotype differentiation, offering the potential to ...
Hang Yin, Xin Zhang, Zheng Zhao, Chong Cao, Minhua Xu, Suhongrui Zhou, Tian Xuan, Ziyi Jin, Limei Han, Yang Fan, Cong Wang, Xiao Zhu, Ying Mao, Jinhua Yu, Cong Li   +14 more
wiley   +1 more source

Quantification of Partial Volume Effects in Salivary Glands SPECT Images after Radiation Therapy of Head and Neck Tumors [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: Radical radiation therapy of head and neck cancers may injure the salivary glands and reduce their function. Single-photon emission computed tomography (SPECT) images maybe used to evaluate function post-therapy.
Mpumelelo Nyathi
doaj   +1 more source

Deep Convolutional Neural Network for Low Projection SPECT Imaging Reconstruction [PDF]

arXiv, 2021
In this paper, we present a novel method for tomographic image reconstruction in SPECT imaging with a low number of projections. Deep convolutional neural networks (CNN) are employed in the new reconstruction method. Projection data from software phantoms were used to train the CNN network.
arxiv  

Association of impaired myocardial flow reserve with risk factors for cardiovascular diseases in patients with nonobstructive coronary artery disease

Российский кардиологический журнал, 2023
Aim. To reveal the association between disorders of myocardial blood flow and reserve, according to dynamic single photon emission computed tomography (SPECT), with risk factors for cardiovascular diseases (CVD) in patients with nonobstructive coronary ...
A. N. Maltseva, K. V. Kop’eva, A. V. Mochula, M. O. Gulya, O. N. Dymbrylova, E. V. Grakova, A. A. Boshchenko, K. V. Zavadovsky   +7 more
doaj   +1 more source

AI-based data corrections for attenuation and scatter in PET and SPECT [PDF]

arXiv, 2021
Recent developments in artificial intelligence technology have enabled new developments that can improve attenuation and scatter correction in PET and SPECT. These technologies will enable the use of accurate and quantitative imaging without the need to acquire a CT image, greatly expanding the capability of PET/MRI, PET-only, and SPECT-only scanners ...
arxiv  

Alzheimer's Association clinical practice guideline for the Diagnostic Evaluation, Testing, Counseling, and Disclosure of Suspected Alzheimer's Disease and Related Disorders (DETeCD‐ADRD): Executive summary of recommendations for primary care

Alzheimer's &Dementia, EarlyView.
Abstract US clinical practice guidelines for the diagnostic evaluation of cognitive impairment due to Alzheimer's disease (AD) or AD and related dementias (ADRD) are decades old and aimed at specialists. This evidence‐based guideline was developed to empower all—including primary care—clinicians to implement a structured approach for evaluating a ...
Alireza Atri, Bradford C. Dickerson, Carolyn Clevenger, Jason Karlawish, David Knopman, Pei‐Jung Lin, Mary Norman, Chiadi Onyike, Mary Sano, Susan Scanland, Maria Carrillo   +10 more
wiley   +1 more source

Preparation and Biological Evaluation of [111In]-THPP [5, 10, 15, 20-tetrakis (4-Hydroxyphenyl) Porphyrin] Complex in Healthy Rats Via SPECT Imaging [PDF]

مجله علوم و فنون هسته‌ای, 2016
The aim of this research was the synthesis of 111In-THPP, and its evaluation as a new imaging agent. The 111In-THPP radiotracer was synthesized by 111InCl3 and 5, 10, 15, 20-tetrakis (4-hydroxyphenyl) porphyrin) (THPP) in solution for 60 min at 80˚C.
A.R Jalilian, Sh Sadeghi, M Mirzaii, S Moradkhani   +3 more
doaj  

Resolution recovery on list mode MLEM reconstruction for Dynamic Cardiac SPECT system [PDF]

arXiv, 2022
The Dynamic Cardiac SPECT (DC-SPECT) system is being developed at the Massachusetts General Hospital, featuring a static cardio focus asymmetrical geometry enabling simultaneous high resolution and high sensitivity imaging. Among 14 design iterations of the DC-SPECT with varying number of detector heads, system sensitivity and system resolution, the ...
arxiv