Results 41 to 50 of about 7,137,507 (302)

Evaluation of Scatter Correction Methods in SPECT Images: A Phantom-Based Study of TEW and ESSE Methods

Radiation
We compared scatter correction (SC) in single-photon emission computed tomography (SPECT) images using effective scatter source estimation (ESSE) and the triple-energy window (TEW) method.
Ryutaro Mori, Koichi Okuda, Tomoya Okamoto, Yoshihisa Niioka, Kazuya Tsushima, Masakatsu Tsurugaya, Shota Hosokawa, Yasuyuki Takahashi   +7 more
doaj   +1 more source

Effect of Contrast and Adaptation on the Perception of the Direction and Speed of Drifting Gratings [PDF]

, 1994
Three experiments were conducted to analyse the effect of contrast and adaptation state on the ability of human observers to discriminate the motion of drifting gratings.
Müller, Rolf, Müller, R., Greenlee, Mark W.   +2 more
core   +1 more source

All-Optical XOR, AND, OR, NOT, NOR, NAND, and XNOR Logic Operations Based on M-Shaped Silicon Waveguides at 1.55 μm

Micromachines
Silicon waveguides are essential to integrated photonics, which is where optical and electronic components are coupled together on a single silicon chip.
Amer Kotb, Kyriakos E. Zoiros, Wei Chen
doaj   +1 more source

Contrast‐to‐noise ratio (CNR) as a quality parameter in fMRI [PDF]

Journal of Magnetic Resonance Imaging, 2007
AbstractPurposeTo evaluate the impact of data quality on the localization of brain activation in functional magnetic resonance imaging (fMRI) and to explore whether the temporal contrast‐to‐noise‐ratio (CNR) provides a quantitative parameter to estimate fMRI quality.Materials and MethodsWe investigated two methods for defining the CNR by comparing them
Geissler, Alexander, Gartus, Andreas, Foki, Thomas, Tahamtan, Amir Reza, Beisteiner, Roland, Barth, Markus   +5 more
openaire   +5 more sources

Ratio Shared Task 2019

, 2019
<p>Ratio Shared Task 2019:</p> <p>Task 1 (same side classification)</p> <p> </p> <p>Task 2 (stance classification)</p ...
RATIO
core   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo, Shehu Umar Abdullahi, Hassan Adam Murtala, Halima Kabir, Khadija A. Shamsu, Sari A. Acra, Virginia A. Stallings, Mark Rodeghier, Michael R. DeBaun, Lauren J. Klein   +9 more
wiley   +1 more source

Novel scoring system using contrast-enhanced mammography to differentiate benign and malignant architectural distortion

The Egyptian Journal of Radiology and Nuclear Medicine, 2023
Background Incidence of malignancy in architectural distortion (AD) is variable, and as a standard of care, all the architectural distortions are biopsied.
Rupa Renganathan, Prema Subramaniam, Adrija Mandal, P. Suganya, Jeevithan Shanmugam, Mathew Cherian   +5 more
doaj   +1 more source

The Evaluation of Contrast-to-Noise Ratio in CT Images Using Different Parameters of Gold Nanoparticles versus Omnipaque

Frontiers in Biomedical Technologies, 2022
Purpose: Gold Nanoparticles (GNPs) with high density and an atomic number have lately been proposed as an alternative contrast agent for Computed Tomography (CT).
Sara Khademi, Hosein Azimian, Hossein Ghadiri   +2 more
doaj   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine, Hallie Coltin, Sylvia Cheng, Lucie Lafay‐Cousin, Vanan Issai Magimairajan, Craig Erker, Stéphanie Vairy, Lynette Bowes, Adam Fleming, Donna Johnston, Sarah McKillop, Roona Sinha, Julie Bennett, Christina Coleman, Laura Wheaton, Shayna Zelcer, Samuele Renzi, Thai Hoa Tran   +17 more
wiley   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani, Rachel K. Peterson, Avani D. Rao, Laurie J. McKenzie, Ahmed Magdy Elmotayam, Leslie Chang, Michael Roth, Susan L. McGovern   +7 more
wiley   +1 more source