Results 41 to 50 of about 5,554,949 (261)

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

Noise, signal-to-noise ratio and contrast-to-noise ratio.

, 2016
Noise, signal-to-noise ratio and contrast-to-noise ratio.
Jan Kabath (2547553), Fabian Flottmann (2547550), Jan-Hendrik Buhk (815544), Tanja Schneider (121858), Jens Fiehler (702840), Till Illies (2547556), André Kemmling (442910)   +6 more
core   +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

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

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

Peeling Plaids Apart: Context Counteracts Cross-Orientation Contrast Masking [PDF]

, 2009
Background: Contrast discrimination for an image is usually harder if another image is superimposed on top. We asked whether such contrast masking may be enhanced or relieved depending on cues promoting integration of both images as a single pattern ...
Verghese, P., Preeti Verghese, Freeman, E, Verghese, P, Freeman, E. D., Elliot Freeman, Verghese Preeti, Freeman Elliot   +7 more
core   +2 more sources

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk, Sebastian Michaelis, Michaela Döring, Thomas Eichholz, Ursula Holzer, Martin Ebinger, Tim Flaadt, Rupert Handgretinger, Peter Lang, Jan Frederic Weller, Markus Mezger   +10 more
wiley   +1 more source

Quantitative Analysis for the Delineation of the Subthalamic Nuclei on Three-Dimensional Stereotactic MRI Before Deep Brain Stimulation Surgery for Medication-Refractory Parkinson’s Disease

Frontiers in Human Neuroscience, 2022
Delineation of the subthalamic nuclei (STN) on MRI is critical for deep brain stimulation (DBS) surgery in patients with Parkinson’s disease (PD). We propose this retrospective cohort study for quantitative analysis of MR signal-to-noise ratio (SNR ...
Chun-Yu Su, Chun-Yu Su, Alex Mun-Ching Wong, Alex Mun-Ching Wong, Alex Mun-Ching Wong, Chih-Chen Chang, Chih-Chen Chang, Po-Hsun Tu, Po-Hsun Tu, Chiung Chu Chen, Chiung Chu Chen, Chiung Chu Chen, Chih-Hua Yeh, Chih-Hua Yeh   +13 more
doaj   +1 more source

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