Les systèmes d’eye-tracking permettent d’étudier les comportements visuels. Pour que les données de ces systèmes soient précises, la calibration est primordiale. Une bonne calibration se traduit par des valeurs de précision et de justesse faibles. Dans cette étude exploratoire, pour évaluer l’effet de la distance, de la luminosité et de l’angle de ...
Nous présentons un protocole de calibration d’une caméra statique. Ce type de caméra est singulier en photogrammétrie car l’utilisateur ne peut pas modifier son point de vue. Lorsque ce dernier n’est pas orienté vers des références connues, il devient alors impossible de calculer les paramètres de la caméra. Le BEA est amené à travailler sur des do...
Tato diplomová práce se zabývá problematikou použití neuro-fuzzy (NF) modelů a lokálních lineárních modelových stromů (LLMT) pro účel kalibrace a porovnáním těchto metod s tradičními kalibračními přístupy užívanými při kalibraci robotických ramen. Práce se primárně zaměřuje na modely dopředné kinematické úlohy a na dávkový indukční algoritmus využí...
Published in Journal of Bone Metabolism
Background The aim of this study was to investigate the correlation between bone mineral density (BMD) and body composition measured by the Osteosys Primus® and the GE Lunar Prodigy® and to calculate the conversion rate between the 2 devices. Methods The 40 subjects were men and women in aged 20 to 29 years old. All participants were scanned twice ...
Published in Photoacoustics
Endovenous laser ablation (EVLA) is a minimally invasive surgical procedure, often guided by ultrasound (US) imaging, for treating venous insufficiencies. US imaging limitations in accurately visualizing the catheter and the lack of a temperature monitoring system can lead to sub-optimal outcomes. An integrated photoacoustic (PA)-guided EVLA system...
Published in Clinical Proteomics
Background A hepatocellular carcinoma (HCC) prediction model (ASAP), including age, sex, and the biomarkers alpha-fetoprotein and prothrombin induced by vitamin K absence-II, showed potential clinical value in the early detection of HCC. We validated and updated the model in a real-world cohort and promoted its transferability to daily clinical pra...
Published in Asian nursing research
This study aimed to identify the risk factors of carbapenem-resistant Enterobacteriaceae (CRE) acquisition to build a nomogram for CRE acquisition risk prediction and evaluate its performance. This unmatched case-control study included 352 adult patients (55 patients and 297 controls) admitted to the intensive care unit (ICU) of a 453-bed secondary...
Published in Physics and Imaging in Radiation Oncology
Background and purpose Brachytherapy treatment outcomes depend on the accuracy of the delivered dose distribution, which is proportional to the reference air-kerma rate ( RAKR ). Current societal recommendations require the medical physicist to compare the measured RAKR values to the manufacturer source calibration certificate. The purpose of this ...
Published in Biostatistics (Oxford, England)
Pooling biomarker data across multiple studies allows for examination of a wider exposure range than generally possible in individual studies, evaluation of population subgroups and disease subtypes with more statistical power, and more precise estimation of biomarker-disease associations. However, circulating biomarker measurements often require c...
Published in Korean Journal of Radiology
The recent introduction of various high-dimensional modeling methods, such as radiomics and deep learning, has created a much greater diversity in modeling approaches for survival prediction (or, more generally, time-to-event prediction). The newness of the recent modeling approaches and unfamiliarity with the model outputs may confuse some researc...
