Publications
419 results found
Gross P, Kitney RI, Claesen S, et al., 2001, MR-compatible endoscopy and tracking for image-guided surgery, International Congress Series, Vol: 1230, Pages: 1076-1082, ISSN: 0531-5131
To increase patient safety of keyhole surgery, flexible endoscopy was augmented using magnetic resonance imaging (MRI). For this purpose MR-compatible 9-Fr. flexible endoscopes were developed and tested. Instrument visualisation was achieved using miniature MR tracking coils mounted either on top of the endoscope's tip or inside the working channel. The tracking data were used to superimpose a marker on an MR roadmap and to automatically and continuously image at the endoscope's current location. The techniques were tested on both 0.5-T open and 1.5-T small bore scanners using a tube phantom, a melon model and a porcine model. The combined information from MR imaging, MR tracking and endoscopic imaging were displayed on a Unix workstation using a DICOM-based user interface. The MR techniques were found to be a good complement for the limited field of view (FoV) of endoscopy. In particular, the guided scan mode allowed for direct association between the two modalities' images. © 2001, Elsevier B.V.
Seydnejad SR, Kitney RI, 2001, Modeling of Mayer waves generation mechanisms, IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE, Vol: 20, Pages: 92-100, ISSN: 0739-5175
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- Citations: 29
Price DL, De Wilde JP, Papadaki AM, et al., 2001, Investigation of acoustic noise on 15 MRI scanners from 0.2 T to 3 T, JOURNAL OF MAGNETIC RESONANCE IMAGING, Vol: 13, Pages: 288-293, ISSN: 1053-1807
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- Citations: 137
Price DL, De Wilde JP, Papadaki AM, et al., 2001, Investigation of acoustic noise on 15 MRI scanners from 0.2 T to 3 T, Journal of Magnetic Resonance Imaging, Vol: 13, Pages: 288-293, ISSN: 1053-1807
Paloc C, Kitney RI, Bello F, et al., 2001, Virtual reality surgical training and assessment system, International Congress Series, Vol: 1230, Pages: 210-217, ISSN: 0531-5131
This paper presents a description and analysis of the different issues that must be addressed in order to successfully simulate a surgical environment and to obtain reliable measures of surgical skills. It then explores possible solutions to extend the current limits of realism by using today's technology. The proposed techniques are demonstrated on a first prototype system implementing the basic algorithms. © 2001 Elsevier Science B.V.
Price D, De Wilde J, Papadaki AM, et al., 2001, Acoustic noise on 1.5T MRI systems: worst case and comparative measurements, Proceedings of ISMRM 2001, Publisher: International Society for Magnetic Resonance in Medicine, Pages: 1158-1158
De Wilde J, Price D, Papadaki AM, et al., 2001, The significance of SNR in type testing and acceptance testing for 26 MRI scanners, Proceedings of ISMRM 2001, Pages: 1763-1763
Kitney RI, Claesen S, Halls J, 2001, A comprehensive web-based patient information environment, New York, 23rd annual international conference of the IEEE-engineering-in- medicine-and-biology-society, Istanbul, Turkey, Publisher: IEEE, Pages: 3584-3585
Kitney RI, 2001, Magnetic resonance imaging and MR guided surgery, Royal Academy of Engineering conference proceedings - Joint replacement: once is forever?, Publisher: Royal Academy of Engineering, Pages: 27-34
Paloc C, Kitney RI, Bello F, et al., 2001, Virtual reality surgical training and assessment system, CARS 2001: computer assisted radiology and surgery, 15th international congress and exhibition, Berlin, Germany, 27 - 30 June 2001, Publisher: Elsevier, Pages: 55-59
Gross P, Kitney RI, Claesen S, et al., 2001, MR-compatible endoscopy and tracking for image guided surgery, CARS 2001: computer assisted radiology and surgery, 15th international congress and exhibition, Berlin, Germany, 27 - 30 June 2001, Publisher: Elsevier, Pages: 1044-1049
Paloc C, Kitney RI, Bello F, et al., 2001, Virtual reality surgical training and assessment system, 15th International Congress and Exhibition on Computer Assisted Radiology and Surgery, Publisher: ELSEVIER SCIENCE BV, Pages: 207-212, ISSN: 0531-5131
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- Citations: 2
Gross P, Kitney RI, Claesen S, et al., 2001, MR-compatible endoscopy and tracking for image guided surgery, CARS 2001: computer assisted radiology and surgery, 15th international congress and exhibition, Berlin, Germany, 27 - 30 June 2001, Publisher: Elsevier, Pages: 1044-1049
Gariba MA, Kitney RI, 2001, Combining low and high resolution volume data for use in MR tracking, CARS 2001: computer assisted radiology and surgery, Publisher: Elsevier Science Bv, Pages: 1118-1118, ISSN: 0531-5131
Beddoes MP, Peck CC, Hannam AG, et al., 2001, ANN-models for jaw-research, Istanbul, Turkey, IEEE EMBS, Publisher: Kyoto University, Pages: 1216-1219, ISSN: 0454-9244
Seydnejad SR, Kitney RI, 2001, Modeling of mayer waves generation mechanisms: Determining the origin of the low- and very low frequency components of BPV and HRV, Ieee Engineering in Medicine and Biology Magazine, Vol: 20, Pages: 92-100, ISSN: 0739-5175
Gross P, Kitney RI, Halls JM, et al., 2000, Real-time tracking and simultaneous image display using flexible endoscopy in interventional magnetic resonance, RADIOLOGY, Vol: 217, Pages: 348-348, ISSN: 0033-8419
Price D, De Wilde JP, Papadaki AM, et al., 2000, Frequency Analysis of MRI acoustic noise, Proceedings of ISMRM, Denver, USA
Price D, De Wilde JP, Papadaki AM, et al., 2000, Geometric Distortion in Open MRI Systems, Proceedings of IOS, Birmingham, UK, Pages: 80-80
Gross P, Kitney RI, Halls JM, et al., 2000, Real-time Tracking and Simultaneous Image Display Using Flexible Endoscopy in Interventional Resonance, Journal of the Radiological Society of North America, Radiology, Vol: 217
Censi F, Calcagnini G, Lino S, et al., 2000, Transient phase locking patterns among respiration, heart rate and blood pressure during cardiorespiratory synchronisation in humans, Medical & Biological Engineering & Computing, Vol: 38, Pages: 416-426
Kitney RI, Cashman PM, Carter MC, et al., 1999, MR and computer-based visualisation techniques for the detection of cartilage damage in osteoarthritis of the human knee, RADIOLOGY, Vol: 213P, Pages: 204-204, ISSN: 0033-8419
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- Citations: 1
Seydnejad SR, Kitney RI, 1999, Analysis of HRV and BPV by a nonlinear closed loop model, Studies in Health Technology and Informatics, Vol: 60, Pages: 49-71, ISSN: 0926-9630
To obtain a more comprehensive explanation for the generation and interaction of the variabil-ity signais, namely heart rate variability (HRV), blood pressure variation (BPV) and instantaneous lung volume (ILV), a nonlinear closed loop model of the neuro-cardiovascular system is presented. The new model which is based on the Volterra series reprsentation is able to appropriately describe several features observed experimentally in the variability signals in the HF, LF and VLF bands. The model aggregates a set of linear and nonlinear transfer functions representing the physiology involved in producing the rhythmical fluctuations in heart rate and blood pressure normally observed in intact human. It will be shown that the combination of these transfer functions in the order dictated by the underlying physiological system enables us to investigate the HRV and BPV in a systematic manner. Before detailing the structure of the new model a conceptual discussion about the small signal and large signal cardiovascular modelling will help to gain a deeper understanding of the modelling of the variability signals and its relation with the cardiovascular system analysis.
Papadaki AM, Price D, De Wilde JP, et al., 1999, A New MRA Phantom For The Evaluation Of Current MRA Techniques, Proc ISMRM
Price D, De Wilde JP, Papadaki AM, et al., 1999, Safety Evaluation of High field MRI Systems, Proceedings of Radiology, Birmingham, UK, Pages: 23-23
Price D, De Wilde JP, Papadaki AM, et al., 1999, Safety concerns of High field MRI Systems, Proceedings of ESMRMB, Seville, Spain
Curran J, De Wilde JP, Papadaki AM, et al., 1999, Development of evaluation techniques for dedicated MRI systems, Proceedings of Radiology, Birmingham, UK, Pages: 77-77
De Wilde JP, Price D, Papadaki AM, et al., 1999, A review of Pregnancy and MR imaging, International proceedings of VI International Conference on Medical Physics, Pages: 195-200
Seydnejad SR, Kitney RI, 1999, Detection Of Nonlinearity In HRV Using Cyclostationary Analysis, IEEE Proc Engineering in Medicine and Biology Conference
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