Results 41 to 50 of about 2,242,967 (259)

An in vivo probabilistic atlas of the human locus coeruleus at ultra-high field

NeuroImage, 2021
Early and profound pathological changes are evident in the locus coeruleus (LC) in dementia and Parkinson's disease, with effects on arousal, attention, cognitive and motor control.
Rong Ye, Catarina Rua, Claire O'Callaghan, P. Simon Jones, Frank H. Hezemans, Sanne S. Kaalund, Kamen A. Tsvetanov, Christopher T. Rodgers, Guy Williams, Luca Passamonti, James B. Rowe   +10 more
doaj   +1 more source

Quantifying image quality in chest computed tomography angiography: Evaluation of different contrast-to-noise ratio measurement methods

, 2022
Background Contrast-to-noise ratio is used to objectively evaluate image quality in chest computed tomography angiography (CTA). Different authors define and measure contrast-to-noise ratio using different methods.
Kubik-Huch, Rahel A, Chatzaraki, Vasiliki, Thali, Michael, Niemann, Tilo   +3 more
core   +1 more source

Application of Computed Tomography Virtual Noncontrast Spectral Imaging in Evaluation of Hepatic Metastases: A Preliminary Study

Chinese Medical Journal, 2015
Objective: The objective was to qualitatively and quantitatively evaluate hepatic metastases using computed tomography (CT) virtual noncontrast (VNC) spectral imaging in a retrospective analysis.
Shi-Feng Tian, Ai-Lian Liu, Jing-Hong Liu, Mei-Yu Sun, He-Qing Wang, Yi-Jun Liu   +5 more
doaj   +1 more source

Comparison of signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and Subjective image quality score for bronchial artery among images of three energy levels.

, 2016
Comparison of signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and Subjective image quality score for bronchial artery among images of three energy levels.
Guangming Ma (3180786), Yong Yu (170886), Chuangbo Yang (3180783), Taiping He (474274), Haifeng Duan (1702096)   +4 more
core   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

Optimisation of the bone single photon emission computed tomography in oncology patients

Journal of Health Sciences
Introduction: The introduction of hybrid imaging systems such as Single Photon Emission Computed Tomography/Computed Tomography (SPECT/CT) has completely changed the scanning procedure of conventional diagnostic nuclear medicine protocols.
Nusret Salkica, Amela Begić, Adnan Beganović, Fuad Julardžija, Adnan Šehić, Halil Ćorović, Safet Hadžimusić, Amra Skopljak-Beganović   +7 more
doaj   +1 more source

Super-resolution deep learning reconstruction at coronary computed tomography angiography to evaluate the coronary arteries and in-stent lumen: an initial experience

BMC Medical Imaging, 2023
A super-resolution deep learning reconstruction (SR-DLR) algorithm trained using data acquired on the ultrahigh spatial resolution computed tomography (UHRCT) has the potential to provide better image quality of coronary arteries on the whole-heart ...
Makoto Orii, Misato Sone, Takeshi Osaki, Yuta Ueyama, Takuya Chiba, Tadashi Sasaki, Kunihiro Yoshioka   +6 more
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Preliminary study on the feasibility of united compressed sensing with radial acquisition as a routine method for liver dynamic contrast-enhanced examination in elderly patients with malignancy

Insights into Imaging
Objective To explore the value of the united imaging compressed sensing with radial acquisition (uCSR) in liver dynamic contrast-enhanced examinations for elderly patients with malignancy.
Heping Deng, Xiaolei Dong, Yu Zhang, Peng Zhou, Yakun He, Liu Yang   +5 more
doaj   +1 more source

Material imaging study of 3D printing materials for diagnostic radiology phantom development

Brazilian Journal of Radiation Sciences
The 3D printing techniques have found applications across diverse fields, significantly enhancing design and manufacturing processes. The impact of this growth is particularly notable in radiology, where 3D printing has been applied to developing quality
Marcus Oliveira, Matheus Savi, Adriano Vitor, Daniel Villani, Marco Andrade, Carlos Ubeda, Mauricio Mitsuo Monção   +6 more
doaj   +1 more source