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Damsteeg-van Berkel, Selma (author), Beemster, Fleur (author), Dankelman, J. (author), Loeve, A.J. (author)Purpose: DNA is a highly valuable lead to identify people who were possibly involved in a crime. Even by small contact events, minute amounts of DNA (‘trace DNA’) can be transferred from a DNA source to an evidentiary item, which can be enough for a successful DNA analysis. The focus of this research is to get more insight in the collection...journal article 2019
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de Jong, T.L. (author), Moelker, Adriaan (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Purpose: The purpose is to design and validate an anthropomorphic polyvinyl alcohol (PVA) liver phantom with respiratory motion to simulate needle-based interventions. Such a system can, for example, be used as a validation tool for novel needles. Methods: Image segmentations of CT scans of four patients during inspiration and expiration were...journal article 2019
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Knulst, A.J. (author), Gupta, Shailvi (author), Groen, Reinou S. (author), Maharjan, Dipak (author), Kapendra, Amatya S. (author), Dankelman, J. (author), Kushner, Adam L. (author)Objectives: Lack of access to safe surgery is seen as a major issue that needs to be addressed. The aim of this study was to understand which combinations of factors relate to high occurrences of unmet needs and disability in Nepal, and consequently, how to focus future work to maximise impact in this country. Methods: A large population...journal article 2019
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Hardon, S.F. (author), Schilder, F. (author), Bonjer, Jaap (author), Dankelman, J. (author), Horeman, T. (author)Background: Ever since the introduction of laparoscopic surgery, researchers have been trying to add steerability to instruments to allow the surgeon to operate with better reachability and less tissue interaction force. Traditional solutions to introduce this often use a combination of springs, cables, pulleys, and guiding structures,...journal article 2019
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Sharei Amarghan, H. (author), Kieft, Jeroen (author), Takashima, Kazuto (author), Hayashida, Norihiro (author), van den Dobbelsteen, J.J. (author), Dankelman, J. (author)During percutaneous coronary interventions (PCI), a guidewire is used as an initial way of accessing a specific vasculature. There are varieties of guidewires on the market and choosing an appropriate one for each case is critical for a safe and successful intervention. The main objective of this study is to predict the behavior of the guidewire...journal article 2019
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Swamy, A. (author), Burström, Gustav (author), Spliethoff, Jarich W. (author), Babic, Drazenko (author), Ruschke, Stefan (author), Racadio, John M. (author), Edström, Erik (author), Terander, Adrian Elmi (author), Dankelman, J. (author), Hendriks, B.H.W. (author)Safe and accurate placement of pedicle screws remains a critical step in open and minimally invasive spine surgery. The diffuse reflectance spectroscopy (DRS) technique may offer the possibility of intra-operative guidance for pedicle screw placement. Currently, Magnetic Resonance Imaging (MRI) is one of the most accurate techniques used to...journal article 2019
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Hardon, S.F. (author), van Kasteren, R. J. (author), Dankelman, J. (author), Bonjer, H. J. (author), Tuynman, J. B. (author), Horeman, T. (author)Background: Transanal total mesorectal excision (TaTME) is associated with a relatively long learning curve. Force, motion, and time parameters are increasingly used for objective assessment of skills to enhance laparoscopic training efficacy. The aim of this study was to identify relevant metrics for accurate skill assessment in more complex...journal article 2019
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Gregoor, Wouter (author), Dankelman, J. (author), Kment, Christoph (author), Tuijthof, Gabriëlle J.M. (author)A compliant bone drill provides advantages over conventional straight drills, because it allows surgical access via a minimally invasive approach. Hydropower allows the transfer of pressurized water with a compliant hose. The goal is to select the hydraulic actuator for this compliant bone drill by reviewing existing actuator principles. The...journal article 2018
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De Falco, I. (author), Culmone, C. (author), Menciassi, Arianna (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Needles are advanced tools commonly used in minimally invasive medical procedures. The accurate manoeuvrability of flexible needles through soft tissues is strongly determined by variations in tissue stiffness, which affects the needle-tissue interaction and thus causes needle deflection. This work presents a variable stiffness mechanism for...journal article 2018
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Arkenbout, E.A. (author), de Winter, J.C.F. (author), Ali, Anas (author), Dankelman, J. (author), Breedveld, P. (author)Iterative prototyping is costly and time-consuming. Particularly when designing medical instruments, human factors related design choices significantly impact performance and safety. A tool is presented that allows for the evaluation of steerable instrument controls before the onset of the prototyping stage. The design tool couples gestural...journal article 2018
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Horeman, T. (author), Buiter, E.C. (author), Pouran, B. (author), Stijntjes, M. (author), Dankelman, J. (author), Tuijthof, G.J.M. (author)This experimental work focused on the sensor selection for the development of a needle-like instrument to treat small isolated cartilage defects with hydrogels. The aim was to identify the most accurate and sensitive imaging method to determine the location and size of defects compared to a gold standard (µCT). Only intravascular ultrasound...journal article 2018
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Oosting, R.M. (author), Wauben, L.S.G.L. (author), Groen, R.S. (author), Dankelman, J. (author)Shortages of medical equipment in low-and-middle income countries (LMICs) have been found by several previous studies that assessed surgical capacity. To increase surgical capacity, there is a need to identify the availability of specific types of surgical equipment on a local, regional and national level. A survey was conducted among surgeons...journal article 2018
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Blikkendaal, Mathijs D. (author), Driessen, Sara R C (author), Rodrigues, Sharon P. (author), Rhemrev, J.P.T. (author), Smeets, M.J.G.H. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author), Jansen, F.W. (author)Background: During the implementation of new interventions (i.e., surgical devices and technologies) in the operating room, surgical safety might be compromised. Current safety measures are insufficient in detecting safety hazards during this process. The aim of the study was to observe whether surgical teams are capable of measuring surgical...journal article 2018
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Adank, Maartje W. (author), Fleischer, J.C. (author), Dankelman, J. (author), Hendriks, B.H.W. (author)In breast surgery, a lack of knowledge about what is below the tissue surface may lead to positive tumor margins and iatrogenic damage. Diffuse reflectance spectroscopy (DRS) is a spectroscopic technique that can distinguish between healthy and tumor tissue making it a suitable technology for intraoperative guidance. However, because tumor...journal article 2018
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de Jong, T.L. (author), van de Berg, N.J. (author), Tas, L. (author), Moelker, Adriaan (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Purpose: Accurate and precise needle placement is of utmost importance in interventional radiology. However, targeting can be challenging due to, eg, tissue motion and deformation. Steerable needles are a possible solution to overcome these challenges. The present work studied the clinical need for steerable needles. We aimed to answer three...journal article 2018
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Meeuwsen, F.C. (author), Guédon, A.C.P. (author), Klein, J. (author), van der Elst, Maarten (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Introduction: Electrosurgery is used in 80% of surgical procedures. The technique allows surgeons to skilfully dissect tissues and achieve haemostasis. Since improper use of electrosurgery can lead to serious adverse events, training is required to potentially reduce the number and severity of these events. In this study we evaluate education...journal article 2018
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Blikkendaal, Mathijs D. (author), Driessen, Sara R C (author), Rodrigues, Sharon P. (author), Rhemrev, Johann P T (author), Smeets, Maddy J G H (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author), Jansen, F.W. (author)Background: Minimally invasive surgery (MIS) is frequently compromised by surgical flow disturbances due to technology- and equipment-related failures. Compared with MIS in a conventional cart-based OR, performing MIS in a dedicated integrated operating room (OR) is supposed to be beneficial to patient safety. The aim of this study was to...journal article 2017
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van de Berg, N.J. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Purpose<br/>To study the ability of a human operator to manually correct for errors in the needle insertion path without partial withdrawal of the needle by means of an active, tip-articulated steerable needle.<br/><br/>Materials and Methods<br/>The needle is composed of a 1.32-mm outer-diameter cannula, with a flexure joint near the tip, and a...journal article 2017
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de Jong, T.L. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)A needle-tissue interaction experiment has been carried out, by inserting the inner needle of a trocar needle into two ex-vivo human livers. The dataset contains the forces that act on the needle during insertion and retraction into the livers. In addition, a MATLAB code file is included that provides base-level analysis of the data and...journal article 2017
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de Jong, T.L. (author), Pluymen (student), L.H. (author), van Gerwen, D.J. (author), Kleinrensink, GJ (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Medical phantoms can be used to study needle-tissue interaction and to train medical residents. The purpose of this research is to study the suitability of polyvinyl alcohol (PVA) as a liver tissue mimicking material in terms of needle-tissue interaction. Insertions into ex-vivo human livers were used for reference. Six PVA samples were...journal article 2017