Results 61 to 70 of about 7,705 (226)

The potential impact of CT-MRI matching on tumor volume delineation in advanced head and neck cancer [PDF]

, 1997
PURPOSE: To study the potential impact of the combined use of CT and MRI scans on the Gross Tumor Volume (GTV) estimation and interobserver variation.
Touw, A., Frank A. Pameijer, Ru, V. de, Lebesque, J.V., Coen Rasch, Keus, R.B., Rasch, C., Ronald Keus, Koops, W., Harry Bartelink, Muller, S., van Herk, M, Wim Koops, Van Herk, Marcel; id_orcid, Pameijer, F A, de Ru, V, Koops, W, de Ru, V., Muller, S, Bartelink, H., Pameijer, F. A., Lebesque, J. V., Saar Muller, Touw, A, Adriaan Touw, Joos V. Lebesque, Lebesque, J V, Keus, R, Keus, R., Herk, M. van, Bartelink, H, Vera de Ru, van Herk, M., Rasch, C, Pameijer, F.A., Marcel van Herk   +35 more
core   +1 more source

Hardware‐Attentive Programmable Fourier Ptychography Enables Task‐Adaptive Label‐Free Virtual Staining

Advanced Science, EarlyView.
Task‐adaptive programmable optics enables label‐free virtual staining through optical‐attention‐guided acquisition and reconstruction. By optimizing wavelength, illumination angle, exposure time, and imaging depth, the framework learns task‐relevant optical measurements, generating clinically interpretable virtual stains with improved fidelity, non ...
Tianyue He, Wenyi Jing, Le Zhang, Qican Zhang, Tingdong Kou, Xin He, Yan Qiu, Yang Lu, Jian Cui, Yongfu Wen, Zhenrong Zheng, Hongying Zhang, Dayong Jin, Junfei Shen   +13 more
wiley   +1 more source

An Empirical Transmitted EPID Dosimetry Method using a Back-Projection Algorithm [PDF]

Journal of Biomedical Physics and Engineering, 2019
Background: The present study aimed to introduce a rapid transmission dosimetry through an electronic portal-imaging device (EPID) to achieve two-dimensional (2D) dose distribution for homogenous environments. Material and Methods: In this Phantom study,
S M Hashemi, M H Bahreyni, M Mohammadi, S Nasseri, S Bayani, H Gholamhosseinian, R Salek, F Shahedi, M Momennezhad   +8 more
doaj   +1 more source

Targeting p21‐High Senescent Kupffer Cells Nanotherapeutically Potentiates Antitumor Immunity in Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombus

Advanced Science, EarlyView.
Schematic illustration of a biomimetic SKEV@AAV platform targeting p21‐high senescent Kupffer cells (sKCs) in hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT). p21‐high sKCs accumulate in the PVTT microenvironment and establish an immunosuppressive, SASP‐rich environment that facilitates tumor cell proliferation and immune evasion.
Na Ta, Shuyi Wang, Boyan Zhang, Ning Liu, Yingchen Han, Aoran Liu, Ying Xu, Tingsong Chen, Ye Zhang, Qiuhua Luo, Tao Han   +10 more
wiley   +1 more source

A phantom based evaluation of the clinical imaging performance of electronic portal imaging devices

Heliyon, 2023
In this study an evaluation of the imaging performance of an electronic portal imaging device (EPID) is presented. The evaluation performed employing the QC-3V image quality phantom.An EPID system of a 6 MV LINAC, was used to obtain images of a QC-3V EPID phantom. The X-ray source to phantom distance was 100 cm and the field size was 15x15 cm2.
Marios K. Tzomakas, Vasiliki Peppa, Antigoni Alexiou, Georgios Karakatsanis, Anastasios Episkopakis, Christos Michail, Ioannis Valais, George Fountos, Nektarios Kalyvas, Ioannis S. Kandarakis   +9 more
openaire   +4 more sources

A next-generation electronic portal imaging device for simultaneous imaging and dosimetry in radiotherapy [PDF]

, 2020
The aim of this thesis is to develop a next-generation Electronic Portal Imaging Device (EPID) for simultaneous megavoltage imaging and dosimetry in radiotherapy.
Cheng, Zhangkai Jason
core  

Data from: Setup in a clinical workflow and impact on radiotherapy routine of an in vivo dosimetry procedure with an electronic portal imaging device [PDF]

, 2018
High conformal techniques such as intensity-modulated radiation therapy and volumetric-modulated arc therapy are widely used in overloaded radiotherapy departments.
Kang, Shengwei, Xiao, Mingyong, Li, Jie, Piermattei, Angelo, Liao, Xiongfei, Xin, Xin, Wang, Pei, Grusio, Mattia, Tang, Bin, Orlandini, Lucia Clara   +9 more
core   +1 more source

A Computational Approach for Biomimetic Design of Liver‐On‐A‐Chip

Advanced Intelligent Discovery, EarlyView.
A biomimetic liver‐on‐a‐chip with antiparallel perfusion was designed using COMSOL‐guided simulation to replicate hepatic acinus transport. Full‐scale modelling revealed diffusion‐dominated, length‐dependent nutrient gradients and low‐shear conditions.
Zhenxu Yang, Qiankun Yin, Qingxin Liu, Zhejun Xu, Ye Zhang, Christopher Vega‐Sánchez, Xiaochen Liu, Daniele Vigolo, Jiao Jiao Li, Ken‐Tye Yong   +9 more
wiley   +1 more source

Patient-specific intensity modulated radiotherapy quality assurance using an electronic portal imaging device

Nucleus, 2016
modern clinical electron linear accelerator was commissioned at the Department of Radiotherapy in the Oncology and Radiobiology Institute. The use of electronic portal image device (EPID) for patient-specific intensity modulated radiotherapy (IMRT ...
Eduardo F. Larrinaga Cortina, David N. Alonso Fernández   +1 more
doaj  

Transmission dosimetry with a scanning liquid filled electronic portal imaging device for megavoltage photo beams [PDF]

, 1997
An important question with respect to radiation therapy is to what degree of accuracy, dose delivery can be achieved in clinical practice. It is well understood that accurate delivery of a specific radiation dose to a target volume is critical to the ...
Parsaei, Homayoon
core