How to find the right balance

Purpose/Objective: Most dose-escalation trials in glioblastoma patients integrate the escalated dose throughout the standard course by targeting a specific subvolume. We hypothesize that anatomical changes during irradiation may affect the dose coverage of this subvolume for both proton- and photon-based …

Radiotherapie bij patiënten met een hoofd-hals carcinoom kan in delen van de hersenen dosis afgeven, wat vermoeidheid en neurocognitieve disfunctie kan veroorzaken. Het doel van deze studie is om de kans te voorspellen op het ontwikkelen van deze bijwerkingen bij patiënten met primaire fotonentherapie …

A main challenge in single emitter microscopy is that it is difficult to efficiently collect all the emitted light from single photon sources. Due to the dipole nature of the single photon sources, is it hard to measure the brightness of these molecules in a calibrated manner, since the light is not …

Multiple scientific and industrial applications such as telecommunication and quantum cryptography causing a rise in the development of the superconducting nanowire single photons detectors (SNSPD). In the last decade, the characteristics of the detectors improved but run against the problem that the …

Bij een myocardperfusiescintigrafie (MPS) wordt na het uitvoeren van zowel de rust- als de stress single photon emission computed tomography (SPECT) een attenuatiecorrectie (AC) CT-scan uitgevoerd. Door het gebruik van een CT-scan voor de AC van de SPECT-data is de totale stralingsdosis voor de patiënt …

Objective: In myocardial perfusion single-photon emission computed tomography (SPECT), abdominal activity often interferes with the evaluation of perfusion in the inferior wall, especially after pharmacological stress. In this randomized study, we examined the effect of carbonated water intake versus …

In this thesis the workings of a time-resolved setup are treated as well as the underlying physics. The setup is based on optical gating, which gives control over very short moments in time to let light pass through a gate. As this process is stable, light can be studied in very short and low intensities. …

Een nadeel van bestraling van de parasternale klieren is het niet zichtbaar worden op de Computed Tomography, waardoor de parasternale klieren worden ingetekend met behulp van de European SocieTy for Radiotherapy & Oncology (ESTRO). Door de Single Photon Emission Tomography - Computed Tomography (SPECT-CT) …

The purpose of this report is to assess the relevance of the measurement of the spectrally resolved distribution of radiation in tokamak boundary plasmas. This assessment is important and urgent in view of the recent ambition to design and construct a multi-camera configuration for hyper imaging spectroscopy1 …