City Research Online

Items where Author is "Langford, R. M."

Up a level
Export as [feed] RSS 2.0 [feed] RSS
Group by: Type | No Grouping
Number of items: 62.

Belhaj, A., Phillips, J. P., Kyriacou, P. A. & Langford, R. M. (2016). Comparison of non-invasive peripheral venous saturations with venous blood co-oximetry. Journal of Clinical Monitoring and Computing, doi: 10.1007/s10877-016-9959-9

Shafqat, K., Langford, R. M. & Kyriacou, P. A. (2015). Estimation of instantaneous venous blood saturation using the Photoplethysmograph (PPG) waveform. Physiological Measurement, 36(10), pp. 2203-2214. doi: 10.1088/0967-3334/36/10/2203

Phillips, J. P., Cibert-Goton, V., Langford, R. M. & Shortland, P. J. (2013). Perfusion assessment in rat spinal cord tissue using photoplethysmography and laser Doppler flux measurements. Journal of Biomedical Optics, 18(3), 037005. doi: 10.1117/1.JBO.18.3.037005

Phillips, J. P., Belhaj, A., Langford, R. M. & Kyriacou, P. A. (2013). Effect of respiratory-induced intensity variations on finger SpO(2) measurements in volunteers. 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 3937-3940. doi: 10.1109/EMBC.2013.6610406

Phillips, J. P., Belhaj, A., Langford, R. M. & Kyriacou, P. A. (2013). Effect of respiratory-induced intensity variations on finger SpO2 measurements in volunteers. Paper presented at the 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’13), 03-07-2013 - 07-07-2013, Osaka, Japan. doi: 10.1109/EMBC.2013.6610406

Belhaj, A., Phillips, J. P., Kyriacou, P. A. & Langford, R. M. (2013). Non-invasive optical estimation of local venous oxygen saturation. British Journal of Anaesthesia, 110(5), 877P-878P. doi: 10.1093/bja/aes490

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2012). A new fibre optic pulse oximeter probe for monitoring splanchnic organ arterial blood oxygen saturation. Computer Methods and Programs in Biomedicine, 108(3), pp. 883-888. doi: 10.1016/j.cmpb.2011.03.019

Zaman, T., Kyriacou, P. A., Belhaj, A. , Langford, R. M. & Patel, H. (2012). Development of a Reflectance Photoplethysmographic Sensor used for the Assessment of Perfusion of Free Jejunum Flaps: a case report. In: Kyriacou, E., Promponas, V., Loizou, C. , Schizas, C. N. & Pattichis, C. S. (Eds.), 2012 IEEE 12th International Conference on Bioinformatics & Bioengineering (BIBE). . IEEE. doi: 10.1109/BIBE.2012.6399642

Phillips, J. P., Belhaj, A., Shafqat, K. , Langford, R. M., Shelley, K. H. & Kyriacou, P. A. (2012). Modulation of finger photoplethysmographic traces during forced respiration: venous blood in motion?. 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 3644-3647. doi: 10.1109/EMBC.2012.6346756

Shafqat, K., Kyriacou, P. A., Pal, S. K. & Langford, R. M. (2011). Instantaneous venous oxygenation estimation using the Photoplethysmograph (PPG) waveform. Journal of Physics: Conference Series, 307(1), e012018. doi: 10.1088/1742-6596/307/1/012018

Phillips, J. P., Langford, R. M., Chang, S. H. , Kyriacou, P. A. & Jones, D. P. (2011). Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor. Journal of Biomedical Optics (JBO), 16(7), 077005. doi: 10.1117/1.3598858

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2011). An in vivo investigation of photoplethysmographic signals and preliminary pulse oximetry estimation from the bowel using a new fiberoptic sensor. Anesthesia and Analgesia, 112(5), pp. 1104-1109. doi: 10.1213/ANE.0b013e31820f8df3

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2011). Investigation of photoplethysmographic signals and blood oxygen saturation values obtained from human splanchnic organs using a fiber optic sensor. Journal of Clinical Monitoring and Computing, 25(4), e245. doi: 10.1007/s10877-011-9302-4

Phillips, J. P., Langford, R. M., Chang, S. H. , Maney, K., Kyriacou, P. A. & Jones, D. P. (2010). Cerebral Arterial Oxygen Saturation Measurements Using a Fiber-Optic Pulse Oximeter. Neurocritical Care, 13(2), pp. 278-285. doi: 10.1007/s12028-010-9349-y

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2010). Measurement of splanchnic photoplethysmographic signals using a new reflectance fiber optic sensor. Journal of Biomedical Optics, 15(2), e027012. doi: 10.1117/1.3374355

Phillips, J. P., Kyriacou, P. A., George, K. & Langford, R. M. (2010). Optical measurement of blood flow changes in spinal cord injury. Journal of Physics: Conference Series, 238(1), 012060. doi: 10.1088/1742-6596/238/1/012060

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2010). Preliminary assessment of abdominal organ perfusion utilizing a fiber optic photoplethysmographic sensor. Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, pp. 1020-1023. ISSN 1557-170X doi: 10.1109/IEMBS.2010.5627751

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2010). A New Fibre Optic Pulse Oximeter Probe for Monitoring Splanchnic Organ Arterial Blood Oxygen Saturation. Paper presented at the The 12th Mediterranean Conference on Medical and Biological Engineering and Computing, 27-05-2010 - 30-05-2010, Chalkidiki, Greece.

Chang, S. H., Maney, K., Phillips, J. P. , Langford, R. M. & Mehta, V. (2010). A comparison of the respiratory effects of oxycodone versus morphine: a randomised, double-blind, placebo-controlled investigation. Anaesthesia, 65(10), pp. 1007-1012. doi: 10.1111/j.1365-2044.2010.06498.x

Kyriacou, P. A., Crerar-Gilbert, A., Langford, R. M. & Jones, D. P. (2009). Measurement of photoplethysmographic signals in human abdominal organs. Measurement, 42(7), pp. 1027-1031. doi: 10.1016/j.measurement.2009.03.004

Hickey, M., Kyriacou, P. A., Samuels, N. , Randive, N., Chang, S. H., Maney, K. & Langford, R. M. (2009). Photoplethysmographic signals recorded from human abdominal organs using a fibreoptic probe. British Journal of Anaesthesia, 102(4), 579P-580P. doi: 10.1093/bja/aep007

Phillips, J. P., Langford, R. M., Chang, S. H. , Maney, K., Kyriacou, P. A. & Jones, D. P. (2009). Evaluation of a Fiber-optic Esophageal Pulse Oximeter. Paper presented at the EMBC 2009. Annual International Conference of the IEEE, 3-6 Sept. 2009, Minneapolis, MN.

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2009). In-Vivo Evaluation of a Fiber-Optic Splanchnic Photoplethysmographic Sensor during Open Laparotomy. Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE, pp. 1505-1508. doi: 10.1109/IEMBS.2009.5334159

Phillips, J. P., George, K., Kyriacou, P. A. & Langford, R. M. (2009). Investigation of Photoplethysmographic Changes using a Static Compression Model of Spinal Cord Injury. Paper presented at the EMBC 2009. Annual International Conference of the IEEE, 3-6 Sept. 2009, Minneapolis, MN. doi: 10.1109/IEMBS.2009.5334166

Phillips, J. P., Langford, R. M., Chang, S. H. , Maney, K., Kyriacou, P. A. & Jones, D. P. (2009). Measurements of Cerebral Arterial Oxygen Saturation using a Fiber-optic Pulse Oximeter. Paper presented at the EMBC 2009. Annual International Conference of the IEEE, 3-6 Sept. 2009, Minneapolis, MN. doi: 10.1109/IEMBS.2009.5334604

Phillips, J. P., Langford, R. M., Chang, S. H. , Maney, K., Kyriacou, P. A. & Jones, D. P. (2009). An oesophageal pulse oximetry system utilising a fibre-optic probe. Journal of Physics: Conference Series, 178(1), 012021. doi: 10.1088/1742-6596/178/1/012021

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2009). Development and evaluation of a photometric fibre-optic sensor for monitoring abdominal organ photoplethysmographs and blood oxygen saturation. SPIE Proceedings, 7503, ISSN 0277-786X doi: 10.1117/12.834307

Hickey, M., Samuels, N., Randive, N. , Langford, R. M. & Kyriacou, P. A. (2009). Photoplethysmographic signals from human splanchnic organs using a new fibre-optic sensor. Paper presented at the Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), 14-16 Sep 2009, Liverpool, UK.

Phillips, J. P., Langford, R. M., Kyriacou, P. A. & Jones, D. P. (2008). Preliminary evaluation of a new fibre-optic cerebral oximetry system. Physiological Measurement, 29(12), p. 1383. doi: 10.1088/0967-3334/29/12/003

Phillips, J. P., Kyriacou, P. A., Jones, D. P. , Shelley, K. H. & Langford, R. M. (2008). Pulse oximetry and photoplethysmographic waveform analysis of the esophagus and bowel. Current opinion in anesthesiology, 21(6), pp. 779-783. doi: 10.1097/ACO.0b013e328317794d

Kyriacou, P. A., Jones, D. P., Langford, R. M. & Petros, A. J. (2008). A pilot study of neonatal and pediatric esophageal pulse oximetry. Anesthesia and Analgesia, 107(3), pp. 905-908. doi: 10.1213/ane.0b013e31817e67d1

Nikolic, S., Mehta, V., Ratcliffe, S. , Phillips, J. P., Kyriacou, P. A. & Langford, R. M. (2008). A prospective, randomised, double-blind, double-dummy, placebo-controlled trial to assess the respiratory effects of buprenorphine versus morphine in anaesthetised patients. Paper presented at the The 14th World Congress of Anaesthesiologists, 2-7 Mar 2008, Cape Town, South Africa.

Kyriacou, P. A., Jones, D. P., Langford, R. M. & Petros, A. J. (2007). Pilot study in neonatal and pediatric oesophageal pulse oximetry. Anesthesia and Analgesia, 105(6), S106-S107. doi: 10.1213/01.ane.0000290771.60068.d5

Phillips, J. P., Jones, D. P., Kyriacou, P. A. , Chang, S. H., Maney, K. & Langford, R. M. (2007). Preliminary Evaluation of a Fiber Optic Cerebral Oximetry System in Patients Undergoing Neurosurgery. Anesthesia and Analgesia, 105(6), S113-S114. doi: 10.1213/01.ane.0000290771.60068.d5

Phillips, J. P., Kyriacou, P. A., Chang, S. H. , Maney, K., George, K. & Langford, R. M. (2007). Photoplethysmographic measurements from central nervous system tissue. Journal of Physics: Conference Series, 85(1), 012029. doi: 10.1088/1742-6596/85/1/012029

Shafqat, K., Jones, D. P., Langford, R. M. & Kyriacou, P. A. (2006). Filtering techniques for the removal of ventilator artefact in oesophageal pulse oximetry. Medical & Biological Engineering & Computing, 44(8), pp. 729-737. doi: 10.1007/s11517-006-0089-2

Phillips, J. P., Langford, R. M., Kyriacou, P. A. & Jones, D. P. (2006). Optical fibre catheter photoplethysmograph. Measurement & Control, 39(3), pp. 84-87. doi: 10.1177/002029400603900304

Kyriacou, P. A., Crerar-Gilbert, A., Langford, R. M. & Jones, D. P. (2006). Electro-optical techniques for the investigation of photoplethysmographic signals in human abdominal organs. Paper presented at the SECOND INTERNATIONAL CONFERENCE ON OPTICAL AND LASER DIAGNOSTICS, 11-14 Sep 2005, London, UK. doi: 10.1088/1742-6596/45/1/033

Phillips, J. P., Kyriacou, P. A. & Langford, R. M. (2006). Calibration of an optical fibre cerebral oximeter using a Monte Carlo model. Paper presented at the 12th Annual Scientific Meeting of the Institute of Physics and Engineering in Medicine, Sept 2006, Cambrdige, UK.

Phillips, J. P., Kyriacou, P. A., George, K. , Priestley, J. V. & Langford, R. M. (2006). An optical fiber photoplethysmographic system for central nervous system tissue. Paper presented at the 28th Annual Conference of the IEEE Engineering in Medicine and Biology Society, 31 Aug - 3 Sep 2006, New York, USA.

Pal, S. K., Kyriacou, P. A., Kumaran, S. , Fadheel, S., Emamdee, R., Langford, R. M. & Jones, D. P. (2005). Evaluation of oesophageal reflectance pulse oximetry in major burns patients. Burns, 31(3), pp. 337-341. doi: 10.1016/j.burns.2004.10.025

Shafqat, K., Kyriacou, P. A., Langford, R. M. & Jones, D. P. (2004). FIR Filter Design for Removal of Ventilator Artefact in Oesophageal Photoplethysmographic Signals. Paper presented at the The X Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2004), 31 Jul-04 Aug 2004, Naples, Italy.

Kyriacou, P. A., Pal, S. K., Langford, R. M. & Jones, D. P. (2004). Investigation of oesophageal pulse oximetry in burns patients. Paper presented at the Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), 6-8 Sep 2004, York, UK.

Shafqat, K., Kyriacou, P. A., Langford, R. M. & Jones, D. P. (2004). Multirate Processing for Removal of Ventilator Artefact in Oesophageal PPG Signals. Paper presented at the Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), 6-8 Sep 2004, York, UK.

Phillips, J. P., Langford, R. M., Kyriacou, P. A. & Jones, D. P. (2004). Optical Fibre Catheter Photoplethysmography. Paper presented at the The X Mediterranean Conference on Medical and Biological Engineering and Computing, 31 Jul - 5 Aug 2004, Ischia, Italy.

Kyriacou, P. A., Powell, S. L., Jones, D. P. & Langford, R. M. (2003). Evaluation of oesophageal pulse oximetry in patients undergoing cardiothoracic surgery. Anaesthesia, 58(5), pp. 422-427. doi: 10.1046/j.1365-2044.2003.03091.x

Kyriacou, P. A., Jones, D. P., Langford, R. M. & Petros, A. J. (2003). Oesophageal Pulse Oximetry in Neonatal and Paediatric Patients. In: UNSPECIFIED . UNSPECIFIED. ISBN 1903613191

Kyriacou, P. A., Powell, S., Langford, R. M. & Jones, D. P. (2002). Esophageal pulse oximetry utilizing reflectance photoplethysmography. IEEE Transactions on Biomedical Engineering, 49(11), pp. 1360-1368. doi: 10.1109/TBME.2002.804584

Kyriacou, P. A., Wardhaugh, A., Jones, D. P. , Langford, R. M. & Petros, A. J. (2002). Investigation of photoplethysmographic signals in neonatal and paediatric patients. Journal of Intensive Care Medicine, 28, S111-S111. doi: 10.1007/s00134-002-1455-7

Kyriacou, P. A., Powell, S., Langford, R. M. & Jones, D. P. (2002). Investigation of oesophageal photoplethysmographic signals and blood oxygen saturation measurements in cardiothoracic surgery patients. Physiological Measurement, 23(3), pp. 533-546. doi: 10.1088/0967-3334/23/3/305

Crerar-Gilbert, A. J., Kyriacou, P. A., Jones, D. P. & Langford, R. M. (2002). Assessment of photoplethysmographic signals for the determination of splanchnic oxygen saturation in humans. Anaesthesia, 57(5), pp. 442-445. doi: 10.1046/j.0003-2409.2001.02453.x

Kyriacou, P. A., Langford, R. M., Powell, S. & Jones, D. P. (2002). Oesophageal Pulse Oximetry: A New Monitoring Site. Paper presented at the Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), 2002, Durham, UK.

Powell, S., Kyriacou, P. A., Jones, D. P. & Langford, R. M. (2001). Investigation into the use of a new oesophageal pulse oximeter in cardiothoracic surgery patients. British Journal of Anaesthesia, 87(4), 660P-660P. doi: 10.1093/bja/87.4.654

Kyriacou, P. A., Moye, A. R., Choi, D. M. , Langford, R. M. & Jones, D. P. (2001). Investigation of the human oesophagus as a new monitoring site for blood oxygen saturation. Physiological Measurement, 22(1), doi: 10.1088/0967-3334/22/1/325

Kyriacou, P. A., Crerar-Gilbert, A., Langford, R. M. & Jones, D. P. (2001). Investigation of Photoplethysmographic Signals in Human Visceral Organs. Paper presented at the IX Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2001), 12-14 Jun 2001, Pula, Croatia.

Kyriacou, P. A., Crerar-Gilbert, A., Langford, R. M. & Jones, D. P. (2000). A new system for estimating human splanchnic oxygen saturation. Paper presented at the Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), 13-14 Sep 2000, Southampton, UK.

Kyriacou, P. A., Moye, A. R., Gregg, A. , Choi, D. M., Langford, R. M. & Jones, D. P. (1999). Can the Human Oesophagus give adequate PPG Signals for Pulse Oximetry?. Paper presented at the 5th Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), Sep 1999, Nottingham, UK.

Kyriacou, P. A., Moye, A. R., Gregg, A. , Choi, D. M., Langford, R. M. & Jones, D. P. (1999). A system for investigating oesophageal photoplethysmographic signals in anaesthetised patients. Medical & Biological Engineering & Computing, 37(5), pp. 639-643. doi: 10.1007/BF02513360

Kyriacou, P. A., Choi, D. M., Moye, A. R. , Langford, R. M. & Jones, D. P. (1999). Design and evaluation of a new electro-optical system for monitoring oesophageal photoplethysmographs. Medical & Biological Engineering & Computing, 37(1),

Moye, A. R., Kyriacou, P. A., Gregg, A. , Jones, D. P. & Langford, R. M. (1999). Photoplethysmographic (PPG) signals recorded from the human oesophagus. British Journal of Anaesthesia, A-57,

Kyriacou, P. A., Gregg, A., Langford, R. M. & Jones, D. P. (1998). Investigation of photoplethysmographic signals in the human oesophagus. Paper presented at the VIII Mediterranean Conference on Medical and Biological Engineering and Computing, 14 Jun - 17 Jun 1998, Lemesos, Cyprus.

Kyriacou, P. A., Gregg, A., Langford, R. M. & Jones, D. P. (1998). Investigation of the characteristics of photoplethysmographic signals in the human oesophagus in anaesthetised patients undergoing routine surgery. Paper presented at the 4th Annual National Conference of the Institute of Physics & Engineering in Medicine (IPEM), Sep 1998, Brighton, UK.

This list was generated on Tue Jul 5 05:59:57 2022 UTC.