Results 21 to 30 of about 589,081 (241)

Diagnostic Accuracy of Subtraction Coronary CT Angiography in Severely Calcified Segments: Comparison Between Readers With Different Levels of Experience

open access: yesFrontiers in Cardiovascular Medicine, 2022
PurposeSubtraction coronary CT angiography (CCTA) may reduce blooming and beam-hardening artifacts. This study aimed to assess its value in improving the diagnostic accuracy of readers with different experience levels.MethodWe prospectively enrolled ...
Fang Li   +9 more
doaj   +1 more source

A rare case of fusiform basilar trunk aneurysm

open access: yesRadiology Case Reports, 2022
Aneurysms in the posterior circulation and distal sites are more common among the pediatric population than among adults, with a male predominance. Symptoms of an aneurysm in the posterior circulation can include a stiff neck or severe headache due to a ...
Nguyen-Thi To Tran, MD   +8 more
doaj  

Improved Epstein-Glaser Renormalization II. Lorentz invariant framework [PDF]

open access: yes, 2002
The Epstein--Glaser type T-subtraction introduced by one of the authors in a previous paper is extended to the Lorentz invariant framework. The advantage of using our subtraction instead of Epstein and Glaser's standard W-subtraction method is especially
Gracia-Bondia, J. M., Lazzarini, S.
core   +3 more sources

Introduction to Neutrosophic Subtraction Algebra and Neutrosophic Subtraction Semigroup [PDF]

open access: yesInternational Journal of Neutrosophic Science, 2020
The objective of this paper is to introduce and study the notion of neutrosophic subtraction algebras and neutrosophic subtraction semigroups. It also introduces the notion of neutrosophic ideals of neutrosophic subtraction semigroup and presents some of their basic properties.
Ibrahim, Muritala,   +3 more
openaire   +3 more sources

Transcervical approach for carotid artery stenting without flow reversal: A case report

open access: yesRadiology Case Reports, 2022
: Current treatment options for high-risk patients with severe carotid artery stenosis include transcarotid artery revascularization, transfemoral carotid artery stenting, and carotid endarterectomy.
Nguyen-Luu Giang, MD   +9 more
doaj  

Subtraction by addition [PDF]

open access: yesMemory & Cognition, 2008
University students' self-reports indicate that they often solve basic subtraction problems (13 - 6 = ?) by reference to the corresponding addition problem (6 + 7 = 13; therefore, 13 - 6 = 7). In this case, solution latency should be faster with subtraction problems presented in addition format (6 + _ = 13) than in standard subtraction format (13 - 6 =
openaire   +3 more sources

Cerebral venous sinus thrombosis related to SARS-CoV-2 infection in a pediatric patient: A case report

open access: yesRadiology Case Reports, 2023
Coronavirus disease 2019 is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2); it has recently been associated with several hematologic disorders. A 4-year-old boy who had SARS-CoV-2 10 months prior was admitted
Nguyen Duong Quoc Anh, MD   +9 more
doaj  

Autismo e ensino de habilidades acadêmicas: adição e subtração Autism and teaching academic skills: addition and subtraction

open access: yesRevista Brasileira de Educação Especial, 2007
O ensino de habilidades acadêmicas para pessoas com autismo tem recebido pouca atenção de estudos, provavelmente porque os comprometimentos clássicos do transtorno relacionados à comunicação, interação social e comportamentos são vistos como prioritários
Camila Graciella Santos Gomes
doaj   +1 more source

Paradoxical relationships between Less and More in architectural Form

open access: yesSulaimani Journal for Engineering Sciences, 2020
Nowadays, almost all forms that surround us, in our building's environment and even on papers became similar to each other. The problems with the form are related to the inability of creating it from scratch because the process of creating form today
Ahmed Mohammed Ahmed1   +1 more
doaj   +1 more source

Recurrent head and neck arteriovenous malformations: A case report

open access: yesRadiology Case Reports, 2023
Head and neck arteriovenous malformations are rare, congenital, and high-flow vascular malformations characterized by abnormal communication between feeding arteries and draining veins without intervening capillaries.
Tran Chi Cuong, MD, PhD   +9 more
doaj  

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