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Sloot, A.A. (author)Tumor vascular networks play an important role in various treatments of cancer. Tumor vascular morphology and hemodynamics are known to be different from normal healthy vascular networks. For improvement of treatment, the origins of these differences need to be understood. Differences in morphology and hemodynamics might be due to changes in...master thesis 2003
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Chaeron, S.R.A. (author)A post-Colon Surgery Optical Measurement Sensor for Early Detection of Bacteria KEY WORDS: Near-Infrared, Light Emitting Diodes, Photodiode, water absorption. PURPOSE: Bacteria detection after a colon surgery is an essential tool to prevent infection of the patient. With this aim we are developing an efficient miniaturized optical measurement...master thesis 2008
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Guedon, A.C.P. (author)Blood flow and the associated shear forces have important biological effects on blood vessels. It has been suggested that blood flow abnormalities play a part in the development and the rupture of a deformed part of the wall of a brain artery, which is called an intracranial aneurysm, and thus in cerebral hemorrhages. Knowledge about the blood...master thesis 2010
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Tukker, A.A. (author)Indirect Heat Induced Attachment and Detachment (HIAD) is a promising concept for gripping delicate tissues in ophthalmic surgery. However, the optimal settings of attaching to and detaching from delicate tissues are unknown. This study presents the effects of the instrument heating properties and initial contact force on the adhesion force,...master thesis 2010
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Vosse, M.S. (author)Laparoscopic surgery is a technique in which operations in the abdomen are performed with long slender instruments through small incisions (5-10 mm). Single port surgery is a form of laparoscopic surgery with possible advantages in which the surgeon operates almost exclusively through a single incision. In order to compensate for the limited...master thesis 2010
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Bosma, J.H. (author)To diagnose and treat colon cancer a colonoscopy is usually performed. Current colonoscopy is performed by advancing a colonoscope (scope) through the tortuous colon. However, the flexible scope often buckles when advanced. This can cause discomfort and pain for the patient and can make the examination of the colon difficult for the endoscopist....master thesis 2010
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Voigt, G.L. (author)Background: Incidents with medical equipment have been observed by several studies [6, 4], and the lack of proper training has been identified as one of the main reasons for the occurrence of these errors . Providing proper training is costly and logistically problematic for hospitals. Simulations can successfully resolve some of these problems,...master thesis 2010
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Trommelen, M.H.T. (author)When performing minimally invasive interventions, surgeons use grippers to grip and manipulate tissue. These grippers generally rely on their toothed profile and require pinching of the tissue for sufficient grip, entailing a risk of tissue damage. An solution should be found for this risk of damage. An alternative could be to manipulate the...master thesis 2011
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Van Gorkum, R.F.P. (author)Orthopaedic surgery includes frequent removal of bony tissue with large instruments that require a significant force to operate. An increasing number of surgeons, especially female and older surgeons, cannot operate high-load orthopedic instruments properly because they lack the necessary force or hand span. The goal of this study is to develop...master thesis 2011
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Pessers, R.A.W. (author)This thesis discusses the design of a new steerable tip for a laparoscopic instrument. A new tip design is required since current steerable tip designs have problems with the bending stiffness and the lifespan of the cables. Underaction is a main cause of the low tip stiffness. Since one of the design requirements is that the tip needs to be...master thesis 2011
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Manoharan, V. (author)Epidural anaesthesia is a pain relief technique commonly performed on patients in labor. It requires insertion of a needle into patients back into the epidural space of the spine and inject anaesthetic. It is a blind procedure and anaesthesiologists rely only on the forces felt during needle insertion to determine the position of the needle tip....master thesis 2011
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Gupta, P. (author)Vertebroplasty is a minimally invasive procedure for treating spine. Cement leakage is problem occurring from usage of low viscosity bone cements. High viscosity bone cements are difficult to inject with current design of cement gun due to very high injection forces. A new design of cement gun is developed for injection of high viscosity bone...master thesis 2011
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Emirdag, E. (author)During the surgery, the lighting unit often needs to be manually adapted. However, the manual manipulation may cause loss of concentration, loss of time and increased risk of infections. To improve the manipulation, a semi-automated lighting system commanded by the surgeon is suggested. The commands are given via a pointer device to indicate the...master thesis 2011
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Van der Maas, J.P. (author)Purpose: An accurate needle or catheter placement is essential for the success of many procedures like regional anesthesia or biopsy taking. The accuracy of the needle or catheter placement could be increased by application of a rotational motion, which reduces the tissue indentation and required insertion force. Materials and methods: A...master thesis 2011
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Goffi, M. (author)Aim: Inspect the MRI image sequence to see if it can image the components of an atherosclerotic plaque and investigate if pressure induced deformation measurements can be done on these images. Methods: Four porcine iliac arteries with atherosclerotic plaques were scanned with a T2 imaging sequence in a 7T MRI scanner. One high resolution scan...master thesis 2011
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Golde, T.A. (author)In the last thirty years, many new surgical methods and techniques such as laparoscopic surgery and natural orifice surgery have been introduced into hospitals worldwide. As these technologies have progressed, surgical instruments have become increasingly more complex and also much more difficult to clean and sterilize. In this paper, one such...master thesis 2011
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Van de Berg, N.J. (author)Thermal spread is the extend of lateral damage resulting from soft tissue dissection by means of an energetic surgical instrument. Both a true definition of this factor, and a consistent means to quantify it, are still lacking. This study attempts to standardize thermal spread by 1) listing the relevant medical, technical, and statistical...master thesis 2011
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Zha, X. (author)In the past two decades, dental implants have been an essential component of the public health. However, lack of a reliable and safe dental surgery imaging modality remains a major problem. Optical coherence tomography (OCT) is an interferometic optical imaging modality that is somewhat similar to B-mode ultrasound but utilizes infrared light...master thesis 2011
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- Arkenbout, E.A. (author) master thesis 2012
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Struik, T. (author)Knee osteoarthritis affects up to 10% of adults in Western societies. Estimations on prevalence show over five times more patients in 2030. Conventional therapy does not provide sufficient and cost effective therapy. Joint distraction is currently considered as new treatment option. Preliminary studies explored the feasibility of knee joint...master thesis 2012