Searched for: mods_originInfo_publisher_s%3A%22SPIE%22
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Lai, Marco (author), Skyrman, Simon (author), Kor, Flip (author), Homan, Robert (author), Babic, Drazenko (author), Edström, Erik (author), Persson, Oscar (author), Burström, Gustav (author), Elmi-Terander, Adrian (author), Hendriks, B.H.W. (author), De With, Peter H.N. (author)
Neurosurgical training is performed on human cadavers and simulation models, such as VR platforms, which have several drawbacks. Head phantoms could solve most of the issues related to these trainings. The aim of this study was to design a realistic and CT-compatible head phantom, with a specific focus on endo-nasal skull-base surgery and...
conference paper 2021
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Lai, Marco (author), Dicorato, Claudio Spiridione (author), de Wild, Marco (author), Verbakel, Frank (author), Shulepov, Sergei (author), Groen, Joanneke (author), Notten, Marc (author), Lucassen, Gerald (author), Van Sambeek, Marc R.H.M. (author), Hendriks, B.H.W. (author), de With, Peter H.N. (author)
Peripheral Artery Diseases (PAD) are caused by the occlusions of arteries in the peripheral locations of the circulatory system. The severity of PAD is usually assessed using the Ankle Brachial Index (ABI) and the Ultrasound Doppler. Non-contact Photoplethysmography (PPG) imaging is a recent emerging technology capable of monitoring skin...
conference paper 2021
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Azizian Amiri, S. (author), van Berckel, Pieter (author), Dankelman, J. (author), Hendriks, B.H.W. (author)
Distinguishing the diseased breast tissue from the healthy tissue is a sorely challenging task for the surgeons during breast conserving surgery (BCS) as both tissues own relatively similar visual and haptic characteristics. It has been shown that diffused reflectance spectroscopy (DRS) has the potential to be used as a real-time tumor margin...
conference paper 2021
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Hung, S. (author), Cnossen, J.P. (author), Fan, D. (author), Smith, C.S. (author)
Optical sectioning technologies achieve high precision localization by reducing the background photon count. We use tilted light-sheet microscopy to achieve optical sectioning in localization microscopy, enabling thick sample observation and low background photon count images. A deformable mirror was incorporated to generate a tetrapod point...
conference paper 2021
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Meister, S. (author), Wermes, Mahdieu A.M. (author), Stuve, Jan (author), Groves, R.M. (author)
Automated fibre layup techniques are commonly used composite manufacturing processes in the aviation sector and require a manual visual inspection. Neural Network classification of defects has the potential to automate this visual inspection, however, the machine decision-making processes are hard to verify. Thus, we present an approach for...
conference paper 2021
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Bulavintsev, V. (author), Zhdanov, Dmitry D. (author)
We propose a generalized method for adapting and optimizing algorithms for efficient execution on modern graphics processing units (GPU). The method consists of several steps. First, build a control flow graph (CFG) of the algorithm. Next, transform the CFG into a tree of loops and merge non-parallelizable loops into parallelizable ones....
conference paper 2021
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Tao, N. (author), Anisimov, A. (author), Groves, R.M. (author)
With the increasing application of thick composites in marine, wind energy and aerospace industries, the inspection of thick composites becomes more and more challenging when considering the variety of thick structures (e.g., laminate, sandwich, honeycomb structures). Shearography is a full-field and non-contact optical non-destructive...
conference paper 2021
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Gatto, Valentina (author), Anisimov, A. (author), Lettinga, W. (author), Tao, N. (author), Lantman, Merel (author), Crijns, Bernice (author), Groves, R.M. (author)
Structural delamination in mural paintings is a complex phenomenon and is considered among the most frequent types of damage. In conservation practice, the most common technique to identify structural detachments is the percussion method. Full-field optical techniques based on interferometry, such as shearography, can provide a more...
conference paper 2021
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Maria, M. (author), d'Hont, Lieve (author), Anisimov, A. (author), Stols-Witlox, Maartje (author), Groves, R.M. (author)
In this study, we describe a method for measuring the spectral reflectance of a paint layer at both the surface and in the volume of the paint layers. We first present a fringes model which illustrates the possibilities for spectral reconstruction using a Short-Time-Fourier-Transform algorithm. We investigate the remaing percentage errors and...
conference paper 2021
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Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)
This study forms a part of the research in using nanoparticles (NPs) to increase the intensity of light scattering signal in the optical fibres. Increasing the intensity of the backscattered light signal in the optical fibres shows the potential to increase the signal-to-noise ratio in order to improve the sensitivity of the backscatter...
conference paper 2021
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Geldof, Freija (author), Jong, Lynn-Jade (author), Dashtbozorg, Behdad (author), Hendriks, B.H.W. (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)
Establishing adequate resection margins during colorectal cancer surgery is challenging. Currently, in up to 30% of the cases the tumor is not completely removed, which emphasizes the lack of a real-time tissue discrimination tool that can assess resection margins up to multiple millimeters in depth. Therefore, we propose to combine spectral...
conference paper 2021
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Heemels, Alex (author), Agbana, T.E. (author), Pereira, S.F. (author), Diehl, J.C. (author), Verhaegen, M.H.G. (author), Vdovin, Gleb (author)
Fourier Ptychography is a computational imaging technique able to decouple high resolution from wide field of view, bypassing the diffraction limit of the microscope. Since it does not rely on high precision mechanics or fluorescent imaging, it is of practical interest for implementation in low scale devices. Despite its gains, realizing a...
conference paper 2020
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Elsinger, Lukas (author), Gourgues, R.B.M. (author), Esmaeil Zadeh, I.Z. (author), Maes, Jorick (author), Guardiani, A. (author), Bulgarini, G. (author), Pereira, S.F. (author), Dorenbos, S.N. (author), Zwiller, Val (author)
Future quantum optical networks will require an integrated solution to multiplex suitable sources and detectors on a low-loss platform. Here we combined superconducting single-photon detectors with colloidal PbS/CdS quantum dots (QDs) and low-loss silicon nitride passive photonic components to show their combined operation at cryogenic...
conference paper 2020
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Kohno, Kotaro (author), Kawabe, Ryohei (author), Tamura, Yoichi (author), Endo, A. (author), Baselmans, J.J.A. (author), Karatsu, K. (author), Inoue, Akio K. (author), Moriwaki, Kana (author), Hayatsu, Natsuki H. (author)
We present a conceptual study of a large format imaging spectrograph for next-generation large (50-m class) single-dish telescopes, i.e., the Large Submillimeter Telescope (LST) and Atacama Large Aperture Submillimeter Telescope (AtLAST). Recent discoveries of high-redshift star-forming galaxies at z=8-9 and candidate quiescent galaxies at z~6...
conference paper 2020
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Mohd Isa, W.H.B. (author), Hunt, A. (author), Hossein Nia Kani, S.H. (author)
Limitations of conventional actuators and sensors in small-scaled and complex devices have diverted the researches' attentions towards smart material transducers such as ionic polymer-metal composites (IPMCs). In addition to actuation capabilities, IPMCs generate voltage when subjected to mechanical deformation. Utilization of IPMCs as...
conference paper 2020
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Šiaudinyte, L. (author), Pereira, S.F. (author)
As the semiconductor industry rapidly approaches the 3nm lithography node, on product overlay (OPO) requirements have become tighter and as a result, residuals magnitude requirements have become even more challenging. Metrology performance enhancements are required to meet these demands. Color Per Layer (CPL) is a unique imaging overlay...
conference paper 2020
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Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)
This study forms the first part of research into enhancing the forward and back scattering of light in an optical fibre using nanoparticles (NPs). This approach has the potential to enhance the sensitivity of optical fibre sensing by increasing the signal-to-noise ratio. The work described in this paper is focused on understanding the...
conference paper 2020
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Maria, M. (author), Anisimov, A. (author), Stols-Witlox, Maartje (author), Groves, R.M. (author)
In this study we investigate the possibility of spectra stitching in the context of Spectral Domain - Optical Coherence Tomography (SD-OCT). The aim is to reach a high axial resolution while keeping sampling issues to a low level (slow decay in depth) but still operating with the fastest camera line rate available. The paper focuses mainly on...
conference paper 2020
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López-Marín, Antonio (author), Springeling, Geert (author), Beurskens, Robert (author), Van Beusekom, Heleen (author), van der Steen, A.F.W. (author), Koch, Arjun D. (author), Bouma, Brett E. (author), Huber, Robert A. (author), Van Soest, Gijs (author), Wang, Tianshi (author)
In this study, we demonstrate a 12x36 mm motorized capsule for OCT imaging of the esophagus. The capsule produces unobstructed images by using a distal reflector design, thus avoiding shadow caused by the motor wires. The motor synchronous control enables three working modes: circumferential imaging, angular sector imaging and accurate beam...
conference paper 2020
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Ouyang, B. (author), Li, Yanlu (author), Kruidhof, Marten (author), Horsten, R.C. (author), Baets, Roel (author), van Dongen, K.W.A. (author), Caro-Schuurman, J. (author)
We report a highly sensitive ultrasound sensor based on an integrated photonics silicon Mach-Zehnder interferometer (MZI). One arm of the MZI is located on a thin membrane, acting as the sensing part of the device. Ultrasound waves excite the membrane's vibrational mode, thus inducing modulation of the MZI transmission. The measured sensor...
conference paper 2020
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