Results 31 to 40 of about 62,132 (278)

Comparisons of Hounsfield Unit Linearity between Images Reconstructed using an Adaptive Iterative Dose Reduction (AIDR) and a Filter Back-Projection (FBP) Techniques [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: The HU linearity is an essential parameter in a quantitative imaging and the treatment planning systems of radiotherapy. Objective: This study aims to evaluate the linearity of Hounsfield unit (HU) in applying the adaptive iterative dose ...
I Suyudi   +4 more
doaj   +1 more source

iPads in Breast Imaging – A Phantom Study [PDF]

open access: yesGeburtshilfe und Frauenheilkunde, 2014
Introduction: Modern tablet PCs as the iPad are becoming more and more integrated into medicine. The aim of this study was to evaluate the display quality of iPads regarding digital mammography. Materials and Methods: Three experienced readers compared the display quality of the iPad 2 and 3 with a dedicated 10 megapixel (MP) mammography liquid crystal
Ruediger Schulz-Wendtland   +4 more
openaire   +3 more sources

Establishment of Diagnostic Reference Levels for Computed Tomography Scanning in Hamadan [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: New advancements have increased the capabilities of computed tomography as a sectional medical imaging modality. An important note is assessing absorbed dose to patients and minimizing it when performing computed tomography examinations.
S Jafari   +5 more
doaj   +1 more source

Feasibility of MV CBCT-based treatment planning for urgent radiation therapy: dosimetric accuracy of MV CBCT-based dose calculations. [PDF]

open access: yes, 2015
Unlike scheduled radiotherapy treatments, treatment planning time and resources are limited for emergency treatments. Consequently, plans are often simple 2D image-based treatments that lag behind technical capabilities available for nonurgent ...
Fogh, Shannon E   +4 more
core   +1 more source

Passive element enriched photoacoustic computed tomography (PER PACT) for simultaneous imaging of acoustic propagation properties and light absorption\ud [PDF]

open access: yes, 2011
We present a ‘hybrid’ imaging approach which can image both light absorption properties and acoustic transmission properties of an object in a two-dimensional slice using a computed tomography (CT) photoacoustic imager.
Hespen, J.C.G. van   +8 more
core   +5 more sources

Phantom reference image

open access: yes, 2020
A proton density weighted phantom ...
, Bruno, , Burak, , Pierre, Juergen
openaire   +1 more source

A Stable Phantom Material for Optical and Acoustic Imaging

open access: yesJournal of Visualized Experiments, 2023
Establishing tissue-mimicking biophotonic phantom materials that provide long-term stability are imperative to enable the comparison of biomedical imaging devices across vendors and institutions, support the development of internationally recognized standards, and assist the clinical translation of novel technologies.
Hacker, Lina   +6 more
openaire   +4 more sources

A feasible and automatic free tool for T1 and ECV mapping [PDF]

open access: yes, 2017
Purpose: Cardiac magnetic resonance (CMR) is a useful non-invasive tool for characterizing tissues and detecting myocardial fibrosis and edema. Estimation of extracellular volume fraction (ECV) using T1 sequences is emerging as an accurate biomarker in ...
Altabella, Luisa   +8 more
core   +1 more source

Calibration of Spectral Imaging Devices With Oxygenation-Controlled Phantoms: Introducing a Simple Gel-Based Hemoglobin Model

open access: yesFrontiers in Physics, 2019
An optical phantom model with stable oxygen saturation (StO2) and optical properties (OPs) is the key for quick and accurate calibration of spectral imaging devices.
V. N. Du Le   +6 more
doaj   +1 more source

3D printing 18F radioactive phantoms for PET imaging

open access: yesEJNMMI Physics, 2021
Purpose Phantoms are routinely used in molecular imaging to assess scanner performance. However, traditional phantoms with fillable shapes do not replicate human anatomy.
Daniel Gillett   +8 more
doaj   +1 more source

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