
Bassem Ben CheikhSorbonne Universities - Pierre-and-Marie Curie University - Paris 6 · Department of Engineering
Bassem Ben Cheikh
Doctor of Philosophy
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14
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Publications (14)
One of the most challenging problems in histological image analysis is the evaluation of the spatial organizations of histological structures in the tissue. In fact, histological sections may contain a very large number of cells of different types and irregularly distributed, which makes their spatial content indescribable in a simple manner. Graph...
This paper deals with the reconstruction of gray level images from unoriented tomographic projections as
it occurs in cryo-electron microscopy. Classical methods proceed in three steps: first, angular
assignation, then image reconstruction from angular information and input projections and finally angular assignation refinement from the reconstru...
The morphology of intestinal glands is an important and significant indicator of the level of the severity of an inflammatory bowel disease, and has also been used routinely by pathologists to evaluate the malignancy and the prognosis of colorectal cancers such as adenocarcinomas. The extraction of meaningful information describing the morphology o...
Colorectal adenocarcinoma originating in intestinal glandular structures is the most common form of colon cancer. In clinical practice, the morphology of intestinal glands, including architectural appearance and glandular formation, is used by pathologists to inform prognosis and plan the treatment of individual patients. However, achieving good in...
Introduction/ Background
Cancer is a disease that affects millions worldwide and accurate determination of whether lymph nodes (LNs) near the primary tumor contain metastatic foci is of critical importance for proper patient management. Histopathological evaluation is the only accepted method to make that determination. However, the current standar...
Introduction/ Background
The interaction between tumor and surrounding microenvironment (TME) is recognized as playing
an important role in the progression of the disease. Understanding of the interaction between tumor and
immune system is the focus of several studies dedicated to the improvement of cancer immunotherapy
effectiveness [1]. On the ot...
This paper deals with the problem of three-dimensional volume reconstruction from two-dimensional projections with unknown orientations. This situation occurs in cryo-electron microscopy. A method determining the orientations and reconstructing the volume jointly from scratch (ab initio) is presented in this work. It is based on a heuristic cost mi...
Crypt architecture is one of the most significant histological features used for the examination of colorectal biopsy specimens enabling clinical decisions in the investigation of Inflammatory Bowel Diseases. However , the architecture modelling remains a challenging problem leading to variability in reporting and subjectiv-ity in pathological exam...
Congrès sous l’égide de la Société Française de Génie Biologique et Médical (SFGBM).
Crypt architecture is one of the most significant histological features used for the examination of colorectal biopsy specimens enabling clinical decisions in the investigation of Inflammatory Bowel Diseases. However , the architecture modelling remains a challenging problem leading to variability in reporting and subjectiv-ity in pathological exam...
This paper deals with the reconstruction of gray level images from unoriented tomographic projections as it occurs in cryo electron microscopy. For this problem, classical methods proceed in three steps, firstly angular assignation, then image reconstruction from angular information and input projections and thirdly angular assignation refinement f...