Publications by authors named "Mast M"

Article Synopsis
  • The study evaluated cosmetic outcomes in early stage breast cancer patients using either intraoperative electron radiotherapy (IOERT) or photon external beam radiotherapy (EB-APBI) after breast-conserving surgery over a 5-year follow-up period.
  • A total of 405 patients (241 treated with IOERT and 164 with EB-APBI) showed that both treatments resulted in high satisfaction rates among patients and physicians, with no significant differences in cosmetic outcomes over time.
  • The conclusion indicates that both IOERT and EB-APBI provide comparable and satisfactory cosmetic results for early stage breast cancer patients, with similar ratings from both subjective and objective assessments.
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  • The study compares dosimetry of three radiation therapy techniques for targeting internal mammary and supraclavicular nodes in breast cancer treatment, as part of the EORTC 22922/10925 trial.
  • A retrospective analysis of ten randomly selected left-sided breast cases was conducted, assessing plans according to trial protocols, where doses to planning target volumes and organs at risk were measured.
  • Results showed that while all techniques adequately dosed the breast and supraclavicular regions, the individualized plan had lower internal mammary coverage, but reduced heart exposure compared to standard techniques, suggesting benefits in treatment planning for breast cancer outcomes.
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  • The study focuses on validating the updated Lung-molGPA prognostic model to predict survival in patients with brain metastases from non-small cell lung cancer after treatment with stereotactic radiotherapy.
  • A total of 241 patients were analyzed using various prognostic factors to assess their survival rates through statistical methods like Kaplan-Meier analysis and Cox proportional hazard model.
  • Results showed that while the Lung-molGPA accurately predicted survival in most patient groups, it slightly overestimated survival for patients in the most favorable prognostic category.
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  • The compound (BCHT-NCN)H was synthesized through nucleophilic substitution and deprotonation, leading to the formation of its lithium derivative that can crystallize as a dimer.
  • Coordination compounds were formed with metal chlorides, including tin, yttrium, and hafnium, resulting in various complex structures.
  • Additional reactions, including substitution and thermolysis, produced specific hafnium complexes and a cationic species through hydride abstraction.
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Accurate and standardized methods for assessing the vital status of patients are crucial for patient care and scientific research. This study introduces the Patient Vital Status (PVS), which quantifies and contextualizes a patient's physical status based on continuous variables such as vital signs and deviations from age-dependent normative values. The vital signs, heart rate, oxygen saturation, respiratory rate, mean arterial blood pressure, and temperature were selected as input to the PVS pipeline.

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Background And Purpose: Previous research among Dutch radiotherapy centres (RTCs) showed that 69% of innovations was simultaneously implemented in 7/19 centres, with a success rate of 51%. However, no structure to share lessons learned about the implementation process existed. Therefore, a national Taskforce Implementation (TTI) was raised to stimulate efficient implementation of innovations.

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Despite their increased secondary value for developing applications and knowledge gain, routine, harmonized and standardized datasets are often not available in Pediatrics. We propose a data integration pipeline towards an interoperable routine dataset in pediatric intensive care medicine. Our three-level approach involves identifying relevant data from primary source systems, developing local data integration processes, and converting data into a standardized, interoperable format using openEHR.

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The use of breath-hold techniques in radiotherapy, such as deep-inspiration breath hold, is increasing although guidelines for clinical implementation are lacking. In these recommendations, we aim to provide an overview of available technical solutions and guidance for best practice in the implementation phase. We will discuss specific challenges in different tumour sites including factors such as staff training and patient coaching, accuracy, and reproducibility.

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Background: Stereotactic radiosurgery (SRS) is a frequently chosen treatment for patients with brain metastases and the number of long-term survivors is increasing. Brain necrosis (e.g.

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Introduction: Systemic inflammatory response syndrome (SIRS), sepsis and associated organ dysfunctions are life-threating conditions occurring at paediatric intensive care units (PICUs). Early recognition and treatment within the first hours of onset are critical. However, time pressure, lack of personnel resources, and the need for complex age-dependent diagnoses impede an accurate and timely diagnosis by PICU physicians.

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Background: Data quality issues can cause false decisions of clinical decision support systems (CDSSs). Analyzing local data quality has the potential to prevent data quality-related failure of CDSS adoption.

Objectives: To define a shareable set of applicable measurement methods (MMs) for a targeted data quality assessment determining the suitability of local data for our CDSS.

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Topical preparations of hydrocortisone can be used for the anti-inflammatory treatment of the female genital area. Although the drug is a low-strength corticosteroid, systemic absorption and distribution of the drug are the most common safety risks associated with this therapy. In the current investigation, we elucidate the physicochemical properties of lipid-based drug carrier systems that govern the local bioavailability of hydrocortisone for intravaginal administration.

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The combination of near edge X-ray absorption spectroscopy with nanoscale X-ray imaging is a powerful analytical tool for many applications in energy technologies, catalysis, which are critical to combat climate change, as well as microelectronics and life science. Materials from these scientific areas often contain key elements, such as Si, P, S, Y, Zr, Nb, and Mo as well as lanthanides, whose X-ray absorption edges lie in the so-called tender photon energy range 1.5-5.

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Introduction: Concurrent chemoradiation followed by immunotherapy is the standard of care for patients with stage III non-small cell lung cancer (NSCLC). Prior to the introduction of adjuvant immunotherapy, we treated patients with stage III NSCLC with concurrent platinum doublet chemotherapy and 66 Gy in 24 fractions. We determined the toxicity of this treatment.

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The present study aimed to determine correlates of adherence to COVID-19 health precautions among college students. Drawing from the literature, the following constructs were considered: self-efficacy, conscientiousness, social support, collectivism, empathy, and fear of COVID. Undergraduate students ( = 92) recruited from psychology classes and social media, living on and off-campus, served as participants during fall 2020.

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Background: To embrace the need for freely accessible training data sets originating from the real world, in the ELISE project, we integrate source data from a pediatric intensive care unit and provide it to researchers.

Objective: We present our vision, initial results and steps on a trail towards an evolutionary open pediatric intensive care data set.

Methods: Our evolution plan for the data set comprises three steps.

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Background And Purpose: During radiotherapy treatment planning, avoidance of organs at risk (OARs) is important. An international consensus-based delineation guideline was recently published with 34 OARs in the brain. We developed an MR-based OAR autosegmentation atlas and evaluated its performance compared to manual delineation.

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Aims: The 15-year results of the EORTC 229922-10925 phase III trial showed a significant reduction in breast cancer mortality and breast cancer recurrences after internal mammary chain (IMC) and medio-supraclavicular irradiation. Unexpectedly, cardiac death was not increased, and the incidence of cardiac events did not differ between left- and right-sided cases, although target volume coverages and organ at risk doses were unknown. Therefore, a planning study was carried out comparing the past and the present, to eventually enable, thereafter, an increased therapeutic ratio of IMC irradiation.

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Resonant inelastic X-ray scattering in the XUV-regime has been implemented at BESSY II, pushing for a few-meV bandwidth in inelastic X-ray scattering at transition metal M-edges, rare earth N-edges and the K-edges of light elements up to carbon with full polarization control. The new dedicated low-energy beamline UE112-PGM1 has been designed to provide 1 µm vertical and 20 µm horizontal beam dimensions that serve together with sub-micrometre solid-state sample positioning as the source point for a high-resolution plane grating spectrometer and a high-transmission Rowland spectrometer for rapid overview spectra. The design and commissioning results of the beamline and high-resolution spectrometer are presented.

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Purpose: To evaluate the ipsilateral breast tumor recurrence (IBTR) after 2 accelerated partial breast irradiation (APBI) techniques (intraoperative electron radiation therapy [IOERT] and external beam APBI [EB-APBI]) in patients with early-stage breast cancer.

Methods And Materials: Between 2011 and 2016, women ≥60 years of age with breast carcinoma or Ductal Carcinoma In Situ (DCIS) of ≤30 mm and cN0 undergoing breast-conserving therapy were included in a 2-armed prospective multicenter cohort study. IOERT (1 × 23.

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