Results 71 to 80 of about 604,820 (405)

The observed Fisher information attached to the EM algorithm, illustrated on Shepp and Vardi estimation procedure for positron emission tomography [PDF]

arXiv, 2023
The Shepp & Vardi (1982) implementation of the EM algorithm for PET scan tumor estimation provides a point estimate of the tumor. The current study presents a closed-form formula of the observed Fisher information for Shepp & Vardi PET scan tumor estimation. Keywords: PET scan, EM algorithm, Fisher information matrix, standard errors.
arxiv  

¹⁸F-fluoride positron emission tomography/computed tomography and bone scintigraphy for diagnosis of bone metastases in newly diagnosed, high-risk prostate cancer patients:study protocol for a multicentre, diagnostic test accuracy study [PDF]

, 2016
BACKGROUND: For decades, planar bone scintigraphy has been the standard practice for detection of bone metastases in prostate cancer and has been endorsed by recent oncology/urology guidelines. It is a sensitive method with modest specificity.
Fuglsang, Randi, Langkilde, Niels C, Petersen, Lars J, Zacho, Helle D   +3 more
core   +2 more sources

Prospective Study of 68Ga-DOTATATE Positron Emission Tomography/Computed Tomography for Detecting Gastro-Entero-Pancreatic Neuroendocrine Tumors and Unknown Primary Sites.

Journal of Clinical Oncology, 2016
PURPOSE Gastro-entero-pancreatic neuroendocrine tumors (GEPNETs) are increasing in incidence, and accurate staging is important for selecting the appropriate treatment.
S. Sadowski, V. Neychev, C. Millo, J. Shih, N. Nilubol, P. Herscovitch, K. Pacak, S. Marx, E. Kebebew   +8 more
semanticscholar   +1 more source

A DNA-damage immune response assay combined with PET biomarkers predicts response to neo-adjuvant chemotherapy and survival in oesophageal adenocarcinoma

Scientific Reports, 2021
18F-fluorodeoxyglucose PET-CT may guide treatment decisions in patients with oesophageal adenocarcinoma (OAC). This study evaluated the added value of maximum standardised uptake value (SUVmax) to a novel DNA-damage immune response (DDIR) assay to ...
Kieran G. Foley, Anita Lavery, Eoin Napier, David Campbell, Martin M. Eatock, Richard D. Kennedy, Kevin M. Bradley, Richard C. Turkington   +7 more
doaj   +1 more source

J-PET Framework: Software platform for PET tomography data reconstruction and analysis [PDF]

SoftwareX 11 (2020) 100487, 2020
J-PET Framework is an open-source software platform for data analysis, written in C++ and based on the ROOT package. It provides a common environment for implementation of reconstruction, calibration and filtering procedures, as well as for user-level analyses of Positron Emission Tomography data.
arxiv   +1 more source

Nuclear medicine procedures and the evaluation of male sexual organs: a short review [PDF]

, 2008
Sexuality consists of three aspects that are interrelated and inseparable, biological, physiological and social. The biological aspect considers the individual's capability to give and to receive pleasure.
Adenilson de Souza da Fonseca, Bernardo-Filho M., Beutel M. E., Bouchelouche K., Chaffanjon P. C., Choe W., Dennerstein L., Fanti S., Ganjoo K. N., Gerber G., Halac M., Hatzimouratidis H., Jana S., Kevin Carter, Kim C. K., Kolodny R. C., Kotzerke J., Kotzerke J., Kumar V., Lange P. H., Mario Bernardo-Filho, Masters W. H., Orhan I., Perkins A., Perkins A., Ravizzini G., Roivainen A., Ryu J., Saha G., Sebastião David Santos-Filho, Shen Y. Y., Sotiris Missailidis, Stelzner F., Sumich A. L., Timmermans L., Tóth G., Valdés Olmos R. A., Warren G. P., Willan B. D., Zuckier L. S.   +39 more
core   +4 more sources

Total-body imaging: Transforming the role of positron emission tomography

Science Translational Medicine, 2017
The first total-body positron emission tomography (TB-PET) scanner represents a radical change for experimental medicine and diagnostic health care.
S. Cherry, R. Badawi, J. Karp, W. Moses, P. Price, T. Jones   +5 more
semanticscholar   +1 more source

Development of an automated method for in-house production of sodium 18F-fluoride for injection: process validation as a step toward routine clinical application

EJNMMI Radiopharmacy and Chemistry
Background Sodium 18F-fluoride for injection can be easily cyclotron-produced and purified, as a simple inorganic salt, by adsorption/desorption onto an anion-exchange cartridge and then dispensed for clinical use.
Marija Atanasova Lazareva, Maja Chochevska, Katerina Kolevska, Maja Velickovska, Filip Jolevski, Paulina Apostolova, Ana Ugrinska, Emilija Janevik-Ivanovska   +7 more
doaj   +1 more source

A novel method based solely on FPGA units enabling measurement of time and charge of analog signals in Positron Emission Tomography [PDF]

Bio-Algorithms and Med.-Systems 10(1), 41-45 (2014), 2013
This article presents a novel technique for precise measurement of time and charge based solely on FPGA (Field Programmable Gate Array) device and few satellite discrete electronic components used in Positron Emission Tomography (PET). Described approach simplifies electronic circuits, reduces the power consumption, lowers costs, merges front-end ...
arxiv   +1 more source

Gated metabolic myocardial imaging, a surrogate for dual perfusion-metabolism imaging by positron emission tomography [PDF]

, 2017
Acknowledgments The authors are grateful for the help from Dr H Ali and Dr A Dawson. Funding: This study was performed using a research grant from the Aberdeen Royal Hospitals Trust's Endowment Fund, with further support from the Department of Medical ...
AlMohammad, Abdallah, Norton, Murdoch Y., Sharp, Peter F., Walton, Stephen, Welch, Andrew E.   +4 more
core   +1 more source