Results 51 to 60 of about 7,137,507 (302)

Contrast-to-noise ratio and pixel error for each material in images (a)-(d) shown in Fig 6.

open access: yes, 2019
Contrast-to-noise ratio and pixel error for each material in images (a)-(d) shown in Fig 6.
Joseph Harms (3600506)   +2 more
core   +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

open access: yesFrontiers 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   +13 more
doaj   +1 more source

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

open access: yesPediatric 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   +10 more
wiley   +1 more source

The Impact of the COVID‐19 Pandemic on Childhood Cancer Survival: A Population‐Based Assessment of Survival Patterns Between 2015 and 2023 in Germany

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Numerous international studies have reported declines in new cancer diagnoses, delayed diagnoses and disruptions in cancer treatment following the implementation of COVID‐19 pandemic public health measures, raising concerns that these effects may ultimately contribute to increased cancer mortality.
Friederike Erdmann   +8 more
wiley   +1 more source

Marathon adaptation to spatial contrast: Saturation in sight [PDF]

open access: yes, 1985
The contrast thresholds for detecting a 6.0 c/deg vertical sinusoidal test grating were tracked during and after 3 hr inspection of a high-contrast adapting grating of the same spatial frequency and orientation.
Magnussen, S., Greenlee, Mark W.
core   +1 more source

Image reconstruction using small-voxel size improves small lesion detection for positron emission tomography

open access: yesRadiology and Oncology, 2022
PET/CT imaging is widely used in oncology and provides both metabolic and anatomic information. Because of the relatively poor spatial resolution of PET, the detection of small lesions is limited.
Rep Sebastijan   +5 more
doaj   +1 more source

Translucency, contrast ratio and fluorescence of esthetic materials

open access: yesDental Materials, 2018
This study evaluated the translucency, contrast ratio and fluorescence of resin nanoceramic and zirconia materials employed for manufacturing of the indirect restorations.
Kauling, A. E. C.   +4 more
openaire   +2 more sources

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Motion processing deficits in migraine are related to contrast sensitivity [PDF]

open access: yes, 2012
Background: There are conflicting reports concerning the ability of people with migraine to detect and discriminate visual motion. Previous studies used different displays and none adequately assessed other parameters that could affect performance, such ...
Hine, Trevor   +8 more
core   +1 more source

Adaptive Image Rendering Using a Nonlinear Mapping-Function-Based Retinex Model

open access: yesSensors, 2019
This paper introduces an adaptive image rendering using a parametric nonlinear mapping-function-based on the retinex model in a low-light source. For this study, only a luminance channel was used to estimate the reflectance component of an observed low ...
JongGeun Oh, Min-Cheol Hong
doaj   +1 more source

Home - About - Disclaimer - Privacy