Searched for: subject%3A%22diffuse%255C%2Breflectance%255C%2Bspectroscopy%22
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Kardux, Famke (author)
Spinal fusion is a surgical treatment involving stiffening parts of the spinal column to eliminate any relative motion and improve spine stability. A critical part of spinal fusion surgery is the placement of pedicle screws because it is highly complex and can damage the vascular structures and nerves near the vertebrae. To prevent complications...
master thesis 2022
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van Pelt, Tess (author)
Introduction: Although being the most advanced spinal stabilization method, pedicle screw fixation has an increased number of complications compared to other surgical procedures, due to the complex spinal anatomy, large inter-patient anatomical variability, and the highly vulnerable surrounding tissue of the spine. Screw fixation strength can be...
master thesis 2022
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Swamy, A. (author)
The intraoperative guidance and placement of spinal screws is a complex procedure. High technical expertise is required fromthe surgeons in order to achieve adequate fixation and ensure patient safety by preventing vascular and neurological injuries. The conventional screw placement techniques face several challenges. Surgeons heavily rely on...
doctoral thesis 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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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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van Drunen, F.H.J. (author)
Background Inter- and intra patient morphological differences and absence of visual feedback make the placement of pedicle screws technically very demanding. As the spine is surrounded by neurovascular tissue, complications can have severe consequences, including paralysis. Guidance techniques are often very expensive and can overexpose surgeons...
master thesis 2020
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Kan, Matthijs (author)
Introduction. In spinal surgery, the misplacement of spinal screws is a problem that causes (severe) pain, bleedings or even paralysis [2]. Screw misplacements are common as navigating in the spine is difficult due to the small vertebral dimensions and a lack of anatomical landmarks [3] [4]. In order to improve the navigational support of spine...
master thesis 2020
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Kan, Matthijs (author)
In spinal surgery, the misplacement of spinal screws is a common problem that causes (severe) pain, bleedings or even paralysis [1] [2] [3]. In order to improve the navigational support of spine surgeons, this research focuses on the development of an optical sensing diffuse reflectance spectroscopy (DRS) orthopaedic drill that identifies bone...
student report 2020
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Lai, Marco (author), Skyrman, Simon (author), Shan, Caifeng (author), Paulussen, Elvira (author), Manni, Francesca (author), Swamy, A. (author), Babic, Drazenko (author), Edstrom, Erik (author), Persson, Oscar (author), Burstrom, Gustav (author), Elmi-Terander, Adrian (author), Hendriks, B.H.W. (author), De With, Peter H.N. (author)
In neurosurgery, technical solutions for visualizing the border between healthy brain and tumor tissue is of great value, since they enable the surgeon to achieve gross total resection while minimizing the risk of damage to eloquent areas. By using real-time non-ionizing imaging techniques, such as hyperspectral imaging (HSI), the spectral...
conference paper 2020
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Swamy, A. (author), Spliethoff, Jarich W. (author), Burström, Gustav (author), Babic, Drazenko (author), Reich, Christian (author), Groen, Joanneke (author), Edström, Erik (author), Elmi-Terander, Adrian (author), Racadio, John M. (author), Dankelman, J. (author), Hendriks, B.H.W. (author)
BACKGROUND: The safe and accurate placement of pedicle screws remains a critical step in open and minimally invasive spine surgery, emphasizing the need for intraoperative guidance techniques. Diffuse reflectance spectroscopy (DRS) is an optical sensing technology that may provide intraoperative guidance in pedicle screw placement. PURPOSE:...
journal article 2020
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Volbeda, Annelieke (author)
Brain tumors account for approximately just 2% of all cancers worldwide, but have a noticeable impact on cancer morbidity and mortality. Removal of brain tumors poses a big challenge for neurosurgeons, pediatricians and neuro-oncologists. An important aspect of this challenge is to adequately differentiate between tumor tissue and healthy brain...
master thesis 2019
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van Gent, Carlijn (author)
During use of the smart electrosurgical knife, deterioration of the diffuse reflectance spectroscopy (DRS) signal intensity obstructs proper distinction between tissues. In order to reduce signal loss, this research has focused on the influence of smart electrosurgery on both the morphology and composition of the layer covering the optical fiber...
master thesis 2019
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Baltussen, E. J.M. (author), Brouwer de Koning, S. G. (author), Sanders, J. (author), Aalbers, A.G.J. (author), Kok, N. F.M. (author), Beets, G. L. (author), Hendriks, B.H.W. (author), Sterenborg, H. J.C.M. (author), Kuhlmann, K. F.D. (author), Ruers, T. J.M. (author)
Background: In colorectal cancer surgery there is a delicate balance between complete removal of the tumor and sparing as much healthy tissue as possible. Especially in rectal cancer, intraoperative tissue recognition could be of great benefit in preventing positive resection margins and sparing as much healthy tissue as possible. To better...
journal article 2019
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Baltussen, Elisabeth J.M. (author), Brouwer de Koning, Susan G. (author), Hendriks, B.H.W. (author), Jóźwiak, Katarzyna (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)
In vivo data acquisition using fiberoptic diffuse reflectance spectroscopy (DRS) is more complicated and less controlled compared to ex vivo data acquisition. It would be of great benefit if classifiers for in vivo tissue discrimination based on DRS could be trained on data obtained ex vivo. In this study, in vivo and ex vivo DRS measurements...
journal article 2019
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De Boer, Lisanne L. (author), Kho, Esther (author), Józwiak, Katarzyna (author), Van De Vijver, Koen K. (author), Vrancken Peeters, Marie Jeanne T.F.D. (author), Van Duijnhoven, Frederieke (author), Hendriks, B.H.W. (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)
Diffuse reflectance spectroscopy (DRS) can discriminate different tissue types based on optical characteristics. Since this technology has the ability to detect tumor tissue, several groups have proposed to use DRS for margin assessment during breast-conserving surgery for breast cancer. Nowadays, an increasing number of patients with breast...
journal article 2019
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Mollerus, Féline (author)
Among women, breast cancer has the highest incidence rate of all types of cancer worldwide. For 80% of these patients, a treatment option is the surgical procedure known as breast conserving surgery (BCS). Re-excision is required in 10-60% of these patients, as positive margins are encountered post-operatively, showing the need of an intra...
master thesis 2018
document
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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Brouwer de Koning, Susan G. (author), Baltussen, Elisabeth J.M. (author), Karakullukcu, M. Baris (author), Dashtbozorg, Behdad (author), Smit, Laura A. (author), Dirven, Richard (author), Hendriks, B.H.W. (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)
This ex-vivo study evaluates the feasibility of diffuse reflectance spectroscopy (DRS) for discriminating tumor from healthy tissue, with the aim to develop a technology that can assess resection margins for the presence of tumor cells during oral cavity cancer surgery. Diffuse reflectance spectra were acquired on fresh surgical specimens...
journal article 2018
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Balthasar, Andrea J.R. (author), Bydlon, Torre M. (author), Ippel, Hans (author), van der Voort, Marjolein (author), Hendriks, B.H.W. (author), Lucassen, Gerald W. (author), van Geffen, Geert Jan (author), van Kleef, Maarten (author), van Dijk, Paul (author), Lataster, Arno (author)
Background: During several anesthesiological procedures, needles are inserted through the skin of a patient to target nerves. In most cases, the needle traverses several tissues—skin, subcutaneous adipose tissue, muscles, nerves, and blood vessels—to reach the target nerve. A clear identification of the target nerve can improve the success of...
journal article 2018
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Langhout, Gerrit C. (author), Kuhlmann, Koert F.D. (author), Schreuder, Pim (author), Bydlon, Torre (author), Smeele, Ludi E. (author), van den Brekel, Michiel W.M. (author), Sterenborg, Henricus J.C.M. (author), Hendriks, B.H.W. (author), Ruers, Theo J.M. (author)
Background: Careful identification of nerves during head and neck surgery is essential to prevent nerve damage. Currently, nerves are identified based on anatomy and appearance, optionally combined with electromyography (EMG). In challenging cases, nerve damage is reported in up to 50%. Recently, optical techniques, like diffuse reflectance...
journal article 2018
Searched for: subject%3A%22diffuse%255C%2Breflectance%255C%2Bspectroscopy%22
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