Publications by authors named "Lisbona A"

The EFOMP working group on the Role of Medical Physics Experts (MPEs) in Clinical Trials was established in 2010, with experts from across Europe and different areas of medical physics. Their main aims were: (1) To develop a consensus guidance document for the work MPEs do in clinical trials across Europe. (2) Complement the work by American colleagues in AAPM TG 113 and guidance from National Member Organisations.

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Introduction: Since 2017, in France, medical physicists (MP) are finally defined by law as health professionals and as such, the roles and responsibilities of an MP lean on those medical professional ethics but MPs lack initial or continuing training in this subject. In order to find out how our colleagues feel about this subject, the following survey was conducted.

Methods: French Society of Medical Physics (SFPM) designed a web survey addressed to its members and non-members concerning ethics based on the 2013 AAPM work; experience and training were highlighted as particularly important within the survey structure.

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Oligometastatic cancers designate cancers in which the number of metastases is less than five, corresponding to a particular biological entity whose prognosis is situated between a localized and metastatic disease. The liver is one of the main sites of metastases. When patients are not suitable for surgery, stereotactic body radiotherapy provides high local control rate, although these data come mainly from retrospective studies, with no phase III study results.

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Metastatic gastrointestinal cancer is not an uncommon situation, especially for pancreatic, gastric, and colorectal cancers. In this setting, few data are available on the impact of the treatment of the primary tumour. Oligometastatic disease is associated with longer survival in comparison with more advanced disease.

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Introduction: Glycaemic variability (GV) refers to variations in blood glucose levels, and may affect stroke outcomes. This study aims to assess the effect of GV on acute ischaemic stroke progression.

Methods: We performed an exploratory analysis of the multicentre, prospective, observational GLIAS-II study.

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Quality assurance for radiotherapy of a clinical trial is an important step from the design of the clinical trial. A precise definition of quality assurance must be given in detail in the clinical protocol of the clinical trial. By its implementation, quality assurance allows a homogeneity of the clinical trial, which can lead to a reduction of the biases of results interpretation for the clinical trial.

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Introduction: The roles and responsibilities of medical physicists (MPs) are growing together with the evolving science and technology. The complexity of today's clinical trials requires the skills and knowledge of MPs for their safe and efficient implementation. However, it is unclear to what extent the skillsets offered by MPs are being exploited in clinical trials across Europe.

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Article Synopsis
  • Stereotactic body radiotherapy (SBRT) is emerging as a treatment option for localized prostate cancer, but research supporting its effectiveness is still developing.
  • Many clinical studies have been conducted, but there is a lack of standardization in treatment methods, target areas, and dosage limits across these studies.
  • The French Genito-Urinary Group (GETUG) provides recommendations based on the existing research, acknowledging the need for more consistent evidence in SBRT for prostate cancer.
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Purpose: To update the 2011 ESTRO-EFOMP core curriculum (CC) for education and training of medical physics experts (MPE)s working in radiotherapy (RT), in line with recent EU guidelines, and to provide a framework for European countries to develop their own curriculum.

Material And Methods: Since September 2019, 27 European MPEs representing ESTRO, EFOMP and National Societies, with expertise covering all subfields of RT physics, have revised the CC for recent advances in RT. The ESTRO and EFOMP Education Councils, all European National Societies and international stakeholders have been involved in the revision process.

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The purpose of this article is to describe the external irradiation process and updated recommendations of the French society for radiation oncology for patient follow-up.

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The aim of this review is to present the specificities of clinical research in radiation oncology. Objectives are similar to all research in oncology: to improve the efficacy and to decrease toxic effects. Phase III trials remain the main methodology to demonstrate an improvement in efficiency, but phase I-II and registers are also important tools to validate an improvement in the therapeutic index with new technologies.

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The French sanitary and regulatory context in which radiotherapy centres are comprised is evolving. Risk and quality management systems are currently adapting to these evolutions. The French nuclear safety agency (ASN) decision of July 1st 2008 on quality assurance obligations in radiotherapy has reached 10 years of age, and the French high authority of health (HAS) certification system 20 years now.

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The purpose of the first two editions of the guidelines for external radiotherapy procedures, published in 2007 and 2016 respectively, was to issue recommendations aimed at optimising, harmonising and standardising practices. The purpose of this third edition, which includes brachytherapy, is identical while also taking into account recent technological improvements (intensity modulation radiation therapy, stereotactic radiotherapy, and three-dimension brachytherapy) along with findings from literature. Part one describes the daily use of general principles (quality, security, image-guided radiation therapy); part two describes each treatment step for the main types of cancer.

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: The central point of this study is , and we analyzed how the theoretical model of antecedents and consequents of personal initiative contribute to explaining the relationship between team initiative and its antecedents and consequents. Authentic leadership is proposed as the antecedent, and the consequent leads to two types of outcomes, one of which is related to employee well-being, and the other is related to performance. However, little is known about what occurs in this relationship once the focus shifts to the team level.

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Purpose: ESTRO-EFOMP intend to update the core curriculum (CC) for education and training of medical physicists in radiotherapy in line with the European Commission (EC) guidelines on Medical Physics Experts (MPE), the CanMEDS methodology and recent developments in radiotherapy. As input, a survey of the current structure of radiotherapy MPE national training schemes (NTS) in Europe was carried out.

Methods: A 35-question survey was sent to all European medical physics national societies (NS) with a focus on existence of an NTS, its format and duration, required entry-level education, and financial support for trainees.

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Background: Stereotactic Body Radiation Therapy (SBRT) is an innovative modality based on high precision planning and delivery. Cancer with bone metastases and oligometastases are associated with an intermediate or good prognosis. We assume that prolonged survival rates would be achieved if both the primary tumor and metastases are controlled by local treatment.

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Introduction: Glycemic variability (GV) represents the amplitude of oscillations in glucose levels over time and is associated with higher mortality in critically ill patients. Our aim is to evaluate the impact of GV on acute ischemic stroke (IS) outcomes in humans and explore the impact of two different insulin administration routes on GV in an animal model.

Methods: This translational study consists of two studies conducted in parallel: The first study is an observational, multicenter, prospective clinical study in which 340 patients with acute IS will be subcutaneously implanted a sensor to continuously monitor blood glucose levels for 96 h.

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Introduction: Glycaemic variability (GV) refers to variations in blood glucose levels, and may affect stroke outcomes. This study aims to assess the effect of GV on acute ischaemic stroke progression.

Methods: We performed an exploratory analysis of the multicentre, prospective, observational GLIAS-II study.

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Organizational research has shown that personal initiative is related to both climate for initiative and work engagement. Yet little is known about what happens to this relationship once the focus shifts to the team level. When organizational and team goals are involved this renders the relationship more complex, and team identification and organizational identification are likely to be key to understanding it.

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Background: In working women, there are barriers when combining the mother and work role, especially during the breastfeeding period. Recent literature shows that improving organizational support increases trust performance via different domains (i.e.

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Intensity modulated radiotherapy combined with image guided radiotherapy has led to increase the precision of external beam radiotherapy. However, intra or inter-fraction anatomical variations are frequent during the treatment course and can cause under-dosing of the target volume and/or over-dosing of the organs at risk. Several adaptive radiotherapy (ART) strategies can be defined to compensate these anatomical variations.

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Pediatric ependymoma carries a dismal prognosis, mainly owing to local relapse within RT fields. The current prospective European approach is to increase the radiation dose with a sequential hypofractionated stereotactic boost. In this study, we assessed the possibility of using a simultaneous integrated boost (SIB), comparing VMAT vs.

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Background And Purpose: The aim was to identify whether post-stroke hyperglycaemia (PSH) influences the levels of circulating biomarkers of brain damage and repair, and to explore whether these biomarkers mediate the effect of PSH on the ischaemic stroke (IS) outcome.

Methods: This was a secondary analysis of the Glycaemia in Acute Stroke II study. Biomarkers of inflammation, prothrombotic activity, endothelial dysfunction, blood-brain barrier rupture, cell death and brain repair processes were analysed at 24-48 h (baseline) and 72-96 h (follow-up) after IS.

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Since decades, stereotactic radiotherapy has spread out worldwide. Published results are very numerous. To clarify obviousness among all the publications, this recommendation review was written.

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