Alexandre Ba
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View article: Search of low-contrast liver lesions in abdominal CT: the importance of scrolling behavior
Search of low-contrast liver lesions in abdominal CT: the importance of scrolling behavior Open
Purpose: Visual search using volumetric images is becoming the standard in medical imaging. However, we do not fully understand how eye movement strategies mediate diagnostic performance. A recent study on computed tomography (CT) images s…
View article: Channelized Hotelling observer correlation with human observers for low-contrast detection in liver CT images
Channelized Hotelling observer correlation with human observers for low-contrast detection in liver CT images Open
Task-based image quality procedures in CT that substitute a human observer with a model observer usually use single-slice images with uniform backgrounds from homogeneous phantoms. However, anatomical structures and inhomogeneities in orga…
View article: Inter‐laboratory comparison of channelized hotelling observer computation
Inter‐laboratory comparison of channelized hotelling observer computation Open
Purpose The task‐based assessment of image quality using model observers is increasingly used for the assessment of different imaging modalities. However, the performance computation of model observers needs standardization as well as a we…
View article: New Method for Injectable Quinine Quality Assurance Control Using a Multi-Spectral Microscope
New Method for Injectable Quinine Quality Assurance Control Using a Multi-Spectral Microscope Open
Africa is the world region that is most affected by malaria. Among the therapies used, injectable quinine is considered to be one of the effective antimalarial drug, however non-quality assured antimalarials clearly have a strong market pe…
View article: Objective comparison of high‐contrast spatial resolution and low‐contrast detectability for various clinical protocols on multiple <scp>CT</scp> scanners
Objective comparison of high‐contrast spatial resolution and low‐contrast detectability for various clinical protocols on multiple <span>CT</span> scanners Open
Purpose We sought to compare objectively computed tomography ( CT ) scanner performance for three clinically relevant protocols using a task‐based image quality assessment method in order to assess the potential for radiation dose reductio…
View article: Comparison of low‐contrast detectability between two CT reconstruction algorithms using voxel‐based 3D printed textured phantoms
Comparison of low‐contrast detectability between two CT reconstruction algorithms using voxel‐based 3D printed textured phantoms Open
Purpose: To use novel voxel‐based 3D printed textured phantoms in order to compare low‐contrast detectability between two reconstruction algorithms, FBP (filtered‐backprojection) and SAFIRE (sinogram affirmed iterative reconstruction) and …
View article: PATIENT EXPOSURE OPTIMISATION THROUGH TASK-BASED ASSESSMENT OF A NEW MODEL-BASED ITERATIVE RECONSTRUCTION TECHNIQUE
PATIENT EXPOSURE OPTIMISATION THROUGH TASK-BASED ASSESSMENT OF A NEW MODEL-BASED ITERATIVE RECONSTRUCTION TECHNIQUE Open
The goal of the present work was to report and investigate the performances of a new iterative reconstruction algorithm, using a model observer. For that, a dedicated low-contrast phantom containing different targets was scanned at four vo…
View article: Objective assessment of low contrast detectability in computed tomography with Channelized Hotelling Observer
Objective assessment of low contrast detectability in computed tomography with Channelized Hotelling Observer Open
Iterative algorithms introduce new challenges in the field of image quality assessment. The purpose of this study is to use a mathematical model to evaluate objectively the low contrast detectability in CT. A QRM 401 phantom containing 5 a…