Results 31 to 40 of about 462,780 (278)

Conditional t-SNE: Complementary t-SNE embeddings through factoring out prior information [PDF]

open access: yes, 2019
Dimensionality reduction and manifold learning methods such as t-Distributed Stochastic Neighbor Embedding (t-SNE) are routinely used to map high-dimensional data into a 2-dimensional space to visualize and explore the data.
De Bie, Tijl   +4 more
core   +4 more sources

Synthetic CT generation from CBCT images via deep learning

open access: yesMedical Physics, 2020
PurposeCone‐beam computed tomography (CBCT) scanning is used daily or weekly (i.e., on‐treatment CBCT) for accurate patient setup in image‐guided radiotherapy. However, inaccuracy of CT numbers prevents CBCT from performing advanced tasks such as dose calculation and treatment planning. Motivated by the promising performance of deep learning in medical
Liyuan, Chen   +4 more
openaire   +3 more sources

A Novel Synthetic CT Generation Method Using Multitask Maximum Entropy Clustering

open access: yesIEEE Access, 2019
Due to the risk of radiation from computed tomography (CT) scanning on the human body, the number of CT scans that can be performed on an individual each year is limited. However, CT images play a very important role in medical diagnosis. Therefore, this
Yizhang Jiang   +4 more
doaj   +1 more source

Patient-specific stopping power calibration for proton therapy planning based on single-detector proton radiography. [PDF]

open access: yes, 2015
A simple robust optimizer has been developed that can produce patient-specific calibration curves to convert x-ray computed tomography (CT) numbers to relative stopping powers (HU-RSPs) for proton therapy treatment planning.
Bentefour, EH   +5 more
core   +1 more source

Advances in generating sCT images from brain MR images based on deep learning

open access: yes生物医学转化
Radiotherapy is a crucial modality in the treatment of malignant tumors. Precision radiotherapy planning typically requires the integration of computed tomography (CT) and magnetic resonance imaging (MRI).
Yang Zhihui, Li Hao, Li Fengsen
doaj   +1 more source

CT synthesis from MRI with an improved multi-scale learning network

open access: yesFrontiers in Physics, 2023
Introduction: Using MRI to synthesize CT and substitute its function in radiation therapy has drawn wide research interests. Currently, deep learning models have become the first choice for MRI—CT synthesis because of their ability to study complex non ...
Yan Li, Sisi Xu, Yao Lu, Zhenyu Qi
doaj   +1 more source

Development of a synthetic phantom for the selection of optimal scanning parameters in CAD-CT colonography [PDF]

open access: yes, 2006
The aim of this paper is to present the development of a synthetic phantom that can be used for the selection of optimal scanning parameters in computed tomography (CT) colonography. In this paper we attempt to evaluate the influence of the main scanning
Acar   +64 more
core   +1 more source

Evaluating synthetic computed tomography images for adaptive radiotherapy decision making in head and neck cancer

open access: yesPhysics and Imaging in Radiation Oncology, 2023
Background and purpose: Adaptive radiotherapy (ART) decision-making benefits from dosimetric information to supplement image inspection when assessing the significance of anatomical changes.
Caitlin Allen   +3 more
doaj   +1 more source

Synthetic Gene Circuits: Design with Directed Evolution [PDF]

open access: yes, 2007
Synthetic circuits offer great promise for generating insights into nature's underlying design principles or forward engineering novel biotechnology applications. However, construction of these circuits is not straightforward.
Arnold, Frances H., Haseltine, Eric L.
core   +1 more source

Synthetic CT in Musculoskeletal Disorders

open access: yes, 2023
AbstractRepeated computed tomography (CT) examinations increase patients' ionizing radiation exposure and health costs, making an alternative method desirable. Cortical and trabecular bone, however, have short T2 relaxation times, causing low signal intensity on conventional magnetic resonance (MR) sequences.
Lombardi, Alecio F   +6 more
openaire   +2 more sources

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