Results 51 to 60 of about 12,311,283 (257)

Brightness and contrast adjustments influence proximal caries detection on handheld X-ray radiographs [PDF]

Brazilian Oral Research
This study evaluated the influence of brightness and contrast adjustments on the diagnosis of proximal caries lesions in radiographs acquired with a handheld X-ray device.
Débora Costa RUIZ, Marcyele Natane da Silva MORAIS, Hugo GAÊTA-ARAUJO, Matheus Lima OLIVEIRA, Deborah Queiroz FREITAS, Francisco HAITER-NETO   +5 more
doaj   +2 more sources

An Adaptive Dynamic Range Compression with Local Contrast Enhancement Algorithm for Real-Time Color Image Enhancement

, 2013
Dynamic range compression has become an important function used in modern digital video cameras to improve visual quality of color images suffered from low dynamic range and poor contrast defects.
Tsai, Chi-Yi; Huang, Chih-Hung, 蔡奇謚   +1 more
core   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Bioinspired Adaptive Artificial Cilia With Tunable Sensitivity and Dynamic Range for Airflow Monitoring in the Central Airway

Advanced Materials Technologies, EarlyView.
A magnetically reconfigurable airflow sensor integrated with an airway stent enables tunable sensitivity and dynamic sensing range. Airflow‐induced cantilever deformation generates resistance changes, while an external magnetic field modulates sensor stiffness, enhancing sensitivity at low airflow velocities and extending the sensing range at higher ...
Darren Wang, Ruijian Ge, Shuda Dong, Zhongming Lyu, Yusheng Wang, Nicholas Strymish, Hanwen Fan, Fabien Maldonado, Caitlin T. Demarest, Yuxiao Zhou, Xiaoguang Dong   +10 more
wiley   +1 more source

Closed-Circuit Dual-Port Injector System for Fully Automated Contrast Delivery in Diagnostic Cerebral Angiography [PDF]

Neurointervention
Purpose During diagnostic cerebral angiography, catheter navigation requires manual contrast “puff” injections, while subsequent 2D/3D runs often use automated power injectors. Using power injectors for navigation puffs has not been described. We present
Mohammad Rashad, Om Gandhi, Sami Almasri, Suraj Dumasia, Nathan Yu, Warda Ahmed, Jaeha Kim, Giuseppe Lanzino, Linda Bagley, Omar Choudhri   +9 more
doaj   +1 more source

Application of wavelet-based image fusion in image enhancement

, 2010
To resolve problems of poor contrast and sharpness in degraded images, a novel efficient enhancement algorithm based on image fusion is presented in this paper.
Lili Pei, Haibo Luo, Yaohong Zhao, Zhao YH(赵耀宏), Luo HB(罗海波), Pei LL(裴立力)   +5 more
core   +1 more source

Magnetically Actuated Microrobot for Drug Delivery: Current Progress and Challenges

Advanced Robotics Research, EarlyView.
Magnetically actuated microrobots are reshaping targeted drug delivery through wireless propulsion, programmable materials, and localized therapeutic release. This review examines how fabrication, body material selection, structural architecture, loading mechanisms, and imaging‐guided control converge to enable microrobotic therapies while identifying ...
Yang Yang, David J. Cappelleri
wiley   +1 more source

Image enhancement of chest radiographs using local statistical information

, 1982
The use of statistically based image enhancement techniques applied to chest radiographs has been investigated. These techniques include Unsharp Masking, Statistical Differencing and Median Filtering.
Cocklin, M, Lams, P, Kerr, I, Prewitt, J, Kaye, Roland, M Cocklin, P Lams, G Kaye, I Kerr   +8 more
core   +1 more source

Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics

Advanced Science, EarlyView.
This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li, Zhongguo Ren, Yiliang Lin, Xianfeng Xia, Tianlong Li, Kai Fung Chan, Philip Wai Yan Chiu, Wei Peng Yong, Mengmeng Sun   +8 more
wiley   +1 more source

Comparison of the accuracy of apex locator, digital radiography, and cone-beam computed tomography in root canal working length determination in teeth with external root resorption: An in vitro study

Dental Research Journal
Background: The aim of this study was to compare the accuracy of apex locator, digital periapical radiography, and cone-beam computed tomography (CBCT) for determining the root canal working length (WL) in teeth with external root resorption (ERR ...
Seyed Mohsen Hasheminia, Sanaz Jahadi, Farida Ghazanfari Moghaddam, Shervin Bagherieh   +3 more
doaj   +3 more sources