Results 131 to 140 of about 44,074,800 (396)

Quantification and dosimetric impact of intra‐fractional bladder changes during CBCT‐guided online adaptive radiotherapy for pelvic cancer treatments

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study quantitatively evaluates bladder changes and their dosimetric impact during the on‐couch adaptive process on a commercial CBCT‐based online adaptive radiotherapy (CT‐gART) platform. Methods Data from 183 fractions of ten patients receiving online ART for pelvic cancers were analyzed retrospectively.
Ingrid Valencia Lozano   +7 more
wiley   +1 more source

Prospective and retrospective studies of recovery in aphasia. Changes in cerebral blood flow and language functions.

open access: yesBrain : a journal of neurology, 1998
Prospective and retrospective language evaluations and single photon emission computed tomography (SPECT) scans were performed in order to study the relationship between post-stroke recovery from aphasia and changes in cerebral blood flow (CBF) in groups
M. Mimura   +6 more
semanticscholar   +1 more source

A new recurrent neural network based predictive model for Faecal Calprotectin analysis: A retrospective study [PDF]

open access: yesarXiv, 2016
Faecal Calprotectin (FC) is a surrogate marker for intestinal inflammation, termed Inflammatory Bowel Disease (IBD), but not for cancer. In this retrospective study of 804 patients, an enhanced benchmark predictive model for analyzing FC is developed, based on a novel state-of-the-art Echo State Network (ESN), an advanced dynamic recurrent neural ...
arxiv  

Variations of supersymmetric quantum mechanics and superconformal indices [PDF]

open access: yesPoS (ICPPCRubakov2023) 038
Old studies on supersymmetric quantum mechanics and its deformations, that were initiated by the 1988 joint paper with V. Rubakov, are retrospectively discussed. In the modern circumstances, corresponding results can be related to computations of superconformal indices and associated special functions.
arxiv   +1 more source

Diagnostic image‐based treatment planning for online adaptive ultra‐hypofractionated prostate cancer radiotherapy with MR‐Linac

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose A new workflow was investigated for Elekta Unity MR‐Linac by removing the computed tomography (CT)‐simulation step and using diagnostic CT (DCT) for reference plan generation. Materials and methods Ten patients with ultra‐hypofractionated prostate cancer treated with magnetic resonance imaging (MRI)‐guided adaptive radiotherapy were ...
Yuan Xu   +5 more
wiley   +1 more source

A Treatment Effect Method for Merger Analysis with an Application to Parking Prices in Paris [PDF]

open access: yes
Most retrospective merger studies resort to the treatment effect approach, comparing the price dynamics in a treatment group and in a control group.
Laurent Linnemer, Philippe Choné
core  

Long-term follow-up of 22 psoriatic patients treated with ixekizumab after failure of secukinumab [PDF]

open access: yes, 2020
Switching of biologic agents in treatment of plaque psoriasis is a common strategy. Only a few studies are available on switching between IL17A-blockers.
Amschler, K   +6 more
core   +1 more source

Semi‐automated hippocampal avoidance whole‐brain radiotherapy planning

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Hippocampal avoidance whole‐brain radiotherapy (HA‐WBRT) is designed to spare cognitive function by reducing radiation dose to the hippocampus during the treatment of brain metastases. Current manual planning methods can be time‐consuming and may vary in quality, necessitating the development of automated approaches to streamline ...
Dong Joo Rhee   +9 more
wiley   +1 more source

Synthetic retrospective studies and related topics.

open access: yesBiometrics, 1973
SUMMARY Prospective and retrospective approaches for estimating the influence of several variables on the occurrence of disease are discussed. The assumptions under which these approaches would tend to yield the same estimates as would be given by an ...
N. Mantel
semanticscholar   +1 more source

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