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Browsing publications by Professor John Allen.

Newcastle AuthorsTitleYearFull text
Professor John Allen
Assessing hemodynamics from the photoplethysmogram to gain insights into vascular age: a review from VascAgeNet2022
Professor John Allen
Ethnic disparities in publicly-available pulse oximetry databases2022
Professor John Allen
The science and scientists of Don't Look Up, low cost optical technique is improving healthcare.2022
Samuel Huthart
Crispian Oates
Professor John Allen
Kathia Fiaschi
Dr Andrew Sims
et al.
Validation of a standardised duplex ultrasound classification system for the reporting and grading of peripheral arterial disease2022
Professor John Allen
Deep learning based photoplethysmography classification for peripheral arterial disease detection: a proof of concept study2021
Professor John Allen
Filtering-induced time shifts in photoplethysmography pulse features measured at different body sites: the importance of filter definition and standardization2021
Professor John Allen
Low frequency variability in photoplethysmography and autonomic function assessment2021
Professor John Allen
Dr Ding Chang Zheng
Photoplethysmography (PPG): state-of-the-art methods and applications2021
Professor John Allen
Photoplethysmography for the assessment of peripheral vascular disease2021
Professor John Allen
Photoplethysmography signal processing and synthesis2021
Professor John Allen
Photoplethysmography: Technology, Signal Analysis and Applications2021
Dr Luke Boylan
Dr Craig Nesbitt
Lesley Wilson
Professor John Allen
Dr Andrew Sims
et al.
Reliability of the Edinburgh Claudication Questionnaire for identifying symptomatic PAD in general practice2021
Professor John Allen
The power of light in medicine - challenges and opportunities in vascular optics2021
Dr Daniel Kyle
Dr Luke Boylan
Lesley Wilson
Dr Shona Haining
Dr Andrew Sims
et al.
Accuracy of Peripheral Arterial Disease Registers in UK General Practice: Case-Control Study2020
Samuel Huthart
Professor Gerard Stansby
Professor John Allen
Advancing PPG signal quality and know-how through knowledge translation - from experts to student and researcher2020
Professor John Allen
Alex Murray
Age related changes in pulse risetime measured by photoplethysmography2020
Professor John Allen
Assessment of hypertension using clinical electrocardiogram features: A first-ever review2020
Dr Dingchang Zheng
Professor John Allen
Cuffless Single-Site Photoplethysmography for Blood Pressure Monitoring2020
Professor John Allen
Multi-modal photoplethysmography-based approaches for improved detection of hypertension2020
Professor John Allen
PPG Synth: An innovative toolbox for synthesizing regular and irregular photoplethysmography waveforms.2020
Audrey Macdonald
Professor John Allen
Between visit variability of thermal imaging of feet in people attending podiatric clinics with diabetic neuropathy at high risk of developing foot ulcers2019
Professor John Allen
Focus collection on thermal imaging in medicine2019
Professor John Allen
Dr Nicola Leech
Infrared thermography and ulcer prevention in the high‐risk diabetic foot: data from a single‐blind multicentre controlled clinical trial2019
Professor John Allen
Multi-Site Photoplethysmography Technology for Blood Pressure Assessment: Challenges and Recommendations2019
Dr Gregory Maniatopoulos
Dr Shona Haining
Professor John Allen
Dr Scott Wilkes
Negotiating commissioning pathways for the successful implementation of innovative health technology in primary care2019
Dr Nikki Rousseau
Jan Lecouturier
Professor Gerard Stansby
Laura Wilson
Professor John Allen
et al.
Nurses’ and patients’ experiences and preferences of the ankle-brachial pressure index and multi-site photoplethysmography for the diagnosis of peripheral arterial disease: A qualitative study2019
Jan Lecouturier
Dr Jason Scott
Dr Nicolette Rousseau
Professor Gerard Stansby
Dr Andrew Sims
et al.
Peripheral arterial disease diagnosis and management in primary care: a qualitative study2019
Professor John Allen
Quantifying the delays between multi-site photoplethysmography pulse and ECG R-R interval changes under slow paced breathing.2019
Professor John Allen
Dr Ding Chang Zheng
Recent development of respiratory rate measurement technologies2019
Professor John Allen
Dr Thomas Beale
Dr Jim Wightman
Sensor Housing and Associated Disposable Element2019
Professor John Allen
Stephen Hedley
Simple photoplethysmography pulse encoding technique for communicating the detection of peripheral arterial disease – a proof of concept study2019
Eoin Moloney
Joanne O'Connor
Professor Dawn Craig
Shannon Robalino
Alexandros Chrysos
et al.
Systematic Review of Economic Models Used to Compare Techniques for Detecting Peripheral Arterial Disease2019
Raksheeth Agarwal
Dr John O'Sullivan
Professor John Allen
Dr Louise Coats
Tissue oxygen saturation assessment of microvascular perfusion in adults with Fontan palliation and comparator groups using vascular optical spectrophotometry – A pilot study2019
Dr Yemi Oluboyede
Dr Laura Ternent
Professor Luke Vale
Professor John Allen
Using a Discrete-Choice Experiment to Estimate the Preferences of Clinical Practitioners for a Novel Non-invasive Device for Diagnosis of Peripheral Arterial Disease in Primary Care2019
Professor John Allen
Dr Bridget Griffiths
Audrey Macdonald
A Multicenter Study of the Validity and Reliability of Responses to Hand Cold Challenge as Measured by Laser Speckle Contrast Imaging and Thermography2018
Professor Gerard Stansby
Professor John Allen
Innovative multi-site photoplethysmography analysis for quantifying pulse amplitude and timing variability characteristics in peripheral arterial disease2018
Costanzo Di Maria
Dr Annette Klinge
Professor Alan Murray
Dr Dingchang Zheng
Dr John O'Sullivan
et al.
Innovative multi-site photoplethysmography measurement and analysis demonstrating increased arterial stiffness in paediatric heart transplant recipients2018
Professor John Allen
Nailfold capillaroscopy - how many fingers should be examined to detect abnormality?2018
Professor John Allen
Costanzo Di Maria
Dr Sam Urwin
Dr Alan Murray
Dr Lesley Ottewell
et al.
Novel optical assessments of tissue composition and viability using fluorescence spectroscopy and tissue oxygenation spectrophotometry in patients with systemic sclerosis - a pilot study2018
Dr Bill Waugh
Professor John Allen
Dr Andrew Sims
Dr Thomas Beale
Novel Signal Noise Reduction Method through Cluster Analysis, Applied to Photoplethysmography2018
Audrey Macdonald
Professor John Allen
Reliability of a novel thermal imaging system for temperature assessment of healthy feet.2018
Professor John Allen
Professor Gerard Stansby
Jan Lecouturier
Dr Scott Wilkes
Professor Luke Vale
et al.
Successful development of a multi-site photoplethysmography device for fast peripheral arterial disease diagnosis in primary care2018
Professor John Allen
The assessment of nailfold capillaries: comparison of dermoscopy and nailfold videocapillaroscopy2018
Professor John Allen
Audrey Macdonald
A medical thermal imaging device for the prevention of diabetic foot ulceration2017
Professor Gerard Stansby
Professor John Allen
Confirmed utility of tissue oxygen saturation assessments for predicting healing capability in below knee amputation2017
Professor John Allen
Development of a Clinical Microvascular Imaging and Vascular Optics Facility: The Newcastle Upon Tyne (UK) Experience2017
Professor John Allen
Dr Thomas Beale
Device for use in the assessment of Peripheral Arterial Disease2017
Dr Daniel Kyle
Professor John Allen
Professor Gerard Stansby
Exploratory Thermal Imaging Assessments of the Feet in Patients with Lower Limb Peripheral Arterial Disease2017
Professor John Allen
Intra-and inter-observer reliability of nailfold videocapillaroscopy - A possible outcome measure for systemic sclerosis-related microangiopathy2017
Costanzo Di Maria
Professor John Allen
Intraoperative Thermal and Laser Speckle Contrast Imaging Assessment of Bowel Perfusion in Two Cases of Colorectal Resection Surgery2017
Dr Bridget Griffiths
Professor John Allen
Quantification of differences between nailfold capillaroscopy images with a scleroderma pattern and normal pattern using measures of geometric and algorithmic complexity2017
Audrey Macdonald
Professor John Allen
Reproducibility of Thermal Images: Some Healthy Examples.2017
Audrey Macdonald
Professor John Allen
Thermal symmetry of healthy feet: a precursor to a thermal study of diabetic feet prior to skin breakdown2017
Professor John Allen
Towards a consensus on the understanding and analysis of the pulse waveform: Results from the 2016 Workshop on Arterial Hemodynamics: Past, present and future2017
Professor John Allen
Infrared thermometry reveals no differences of the skin temperatures at the plantar, dorsal, medial and lateral sites between the right foot and left foot in healthy volunteers2016
Dr Alan Bagnall
Professor John Allen
Dr Hannah Sinclair
Dr Vijay Kunadian
Endothelial Dysfunction and Coronary Artery Disease: A State of the Art Review2015
Costanzo Di Maria
Dr Petros Perros
Professor John Allen
Exploratory thermal and laser speckle contrast imaging measurements of eye inflammation in a case of thyroid eye disease2015
Professor John Allen
Illuminating light in medical diagnostics and treatment2015
Professor John Allen
Costanzo Di Maria
Dr Ian Forrest
Imaging assessments of patients with suspected systemic sclerosis and associated inflammatory lung disease2015
Dr Scott Wilkes
Professor Gerard Stansby
Dr Andrew Sims
Professor John Allen
Peripheral Arterial Disease: diagnostic challenges and how photoplethysmography may help2015
Costanzo Di Maria
Professor John Allen
Quantifying the correlation between photoplethysmography and laser Doppler flowmetry microvascular low-frequency oscillations2015
Professor John Allen
Reliability and Validity of Mean Vessel Width in Capillaroscopy for Evaluating Systemic Sclerosis-Related Microangiopathy2015
Professor John Allen
David Talbot
Thermal imaging and its potential for artery-venous fistula function assessment2015
Professor John Allen
Dr Nicola Leech
Thermal imaging potential for assessing diabetic Charcot foot syndrome2015
Professor John Allen
Professor Grainne Gorman
Thermographic assessment of the presence of fatty tumours in myoclonic epilepsy with ragged red fibres2015
Professor John Allen
Dr Michael Drinnan
A pilot study of new spectrophotometry device to measure tissue oxygen saturation2014
Professor John Allen
Microvascular imaging: techniques and opportunities for clinical physiological measurements2014
Dr Neil McKay
Dr Bridget Griffiths
Costanzo Di Maria
Stephen Hedley
Professor Alan Murray
et al.
Novel photoplethysmography cardiovascular assessments in patients with Raynaud's phenomenon and systemic sclerosis: a pilot study2014
Costanzo Di Maria
Professor John Allen
Christopher Neoh
Dr Petros Perros
Novel Thermal Imaging Analysis Technique for Detecting Inflammation in Thyroid Eye Disease2014
Professor John Allen
Reliability of Nailfold Capillary Density Measurement As a Possible Outcome Measure for Systemic Sclerosis-Related Microangiopathy2014
Dr Rachel Green
Professor John Allen
Role of medical thermography in treatment of Frey's syndrome with botulinum toxin A2014
Professor John Allen
Subject Preparation and Thermal Acclimatization Prior to Mild Cold Challenge Testing Using Dynamic Thermal Imaging2014
Costanzo Di Maria
Dr Annette Klinge
Dr Dingchang Zheng
Professor Alan Murray
Dr John O'Sullivan
et al.
A pilot study of photoplethysmographic peripheral pulse transit times in paediatric heart transplant recipients and healthy children2013
Professor John Allen
Beyond the ankle brachial pressure index for the diagnosis of peripheral arterial disease – time for a new look at photoplethysmography?2013
Professor John Allen
Evaluation of three thermal imaging cameras for skin temperature measurement using a blackbody reference source and a spatial resolution test object2013
Professor John Allen
Finger microvascular responses to deep inspiratory gasp assessed and quantified using wavelet analysis2013
Dr Kirstie Anderson
Professor John Allen
Novel assessment of microvascular changes in idiopathic restless legs syndrome (Willis-Ekbom disease)2013
Professor John Allen
Professor Alan Murray
Costanzo Di Maria
Professor Julia Newton
Chronic fatigue syndrome and impaired peripheral pulse characteristics on orthostasis-a new potential diagnostic biomarker2012
Costanzo Di Maria
Dr Annette Klinge
Dr Ding Chang Zheng
Professor Alan Murray
Dr John O'Sullivan
et al.
Feasibility of monitoring vascular ageing by multi-site photoplethysmography2012
Dr Sharad Agarwal
Professor John Allen
Professor Alan Murray
Laser Doppler assessment of dermal circulatory changes in people with coronary artery disease2012
Dr Philip Langley
Costanzo Di Maria
Wenfeng Duan
Marjan Bojarnejad
Dr Ding Chang Zheng
et al.
An algorithm for assessment of quality of ECGs acquired via mobile telephones2011
Professor John Allen
New conceptual and mathematical forms for the contour of volume wave of arterial pulse2011
Professor John Allen
Capillaroscopy in healthy subjects of different ages2010
Professor John Allen
Professor Alan Murray
Comparative reproducibility of dermal microvascular blood flow changes in response to acetylcholine iontophoresis, hyperthermia and reactive hyperaemia2010
Dr Annette Klinge
Professor John Allen
Professor Alan Murray
Dr John O'Sullivan
Increased pulse wave velocity and blood pressure in children who have undergone cardiac transplantation.2009
Sam Stevens
Professor John Allen
Professor Alan Murray
Professor David Jones
Professor Julia Newton
et al.
Microvascular optical assessment confirms the presence of peripheral autonomic dysfunction in primary biliary cirrhosis2009
Dr Philip Langley
Susan King
Dr Ding Chang Zheng
Emma Bowers
Professor John Allen
et al.
Predicting acute hypotensive episodes from mean arterial pressure2009
Professor John Allen
Klaus Overbeck
Alex Nath
Professor Alan Murray
Professor Gerard Stansby
et al.
A prospective comparison of bilateral photoplethysmography versus the ankle-brachial pressure index for detecting and quantifying lower limb peripheral arterial disease2008
Dr Ding Chang Zheng
Professor John Allen
Professor Alan Murray
Determination of aortic valve opening time and left ventricular peak filling rate from the peripheral pulse amplitude in patients with ectopic beats2008
Susan King
Abigail Haigh
Dr Annette Klinge
Dr Ding Chang Zheng
Sam Stevens
et al.
Body Surface Potential Mapping for Detection of Myocardial Infarct Sites2007
Dr Dingchang Zheng
Professor John Allen
Professor Alan Murray
Non-invasive in vivo assessment of changes in peripheral arterial properties with estimation of arterial volume compliance2007
Professor John Allen
Photoplethysmography and its application in clinical physiological measurement2007
Professor John Allen
Elizabeth Kokkinos
Professor Alan Murray
Emeritus Professor Brian Diffey
Dr Simon Meggitt
et al.
Assessment of skin fluorescence characteristics in systemic sclerosis2006
Dr Dingchang Zheng
Professor John Allen
Professor Alan Murray
Development of a method for determining arterial pulse propagation times and influence of arterial compliance2006
Professor John Allen
Dr Alan Murray
Impaired systemic microvascular endothelial function with coronary artery disease can be detected nowinvasively using novel laser doppler techniques2006
Professor John Allen
Klaus Overbeck
Professor Gerard Stansby
Professor Alan Murray
Photoplethysmography assessments in cardiovascular disease2006
Professor Namita Kumar
Dr Bridget Griffiths
Professor John Allen
Thermographic and symptomatic effect of a single dose of sildenafil citrate on Raynaud's phenomenon in patients with systemic sclerosis: A potential treatment2006
Professor John Allen
Crispian Oates
Dr Ahmed Chishti
David Talbot
Professor Alan Murray
et al.
Thermography and colour duplex ultrasound assessments of arterio-venous fistula function in renal patients2006
Professor John Allen
David Talbot
Dr Alan Murray
Automated infrared image processing for the assessment of arterio-venous fistula function in renal patients2005
Dr Louise Allan
Dr Simon Kerr
Dr Clive Ballard
Professor John Allen
Professor Alan Murray
et al.
Autonomic function assessed by heart rate variability is normal in Alzheimer's disease and vascular dementia2005
Dr Louise Allan
Dr Nick Steen
Professor John Allen
Professor Alan Murray
Professor Rose Anne Kenny
et al.
Autonomic function is impaired in elderly stroke survivors2005
Dr Dingchang Zheng
Professor John Allen
Professor Alan Murray
Effect of external cuff pressure on arterial compliance2005
Professor John Allen
Crispian Oates
Tim Lees
Professor Alan Murray
Photoplethysmography detection of lower limb peripheral arterial occlusive disease: a comparison of pulse timing, amplitude and shape characteristics2005
Professor John Allen
Crispian Oates
Dr Ahmed Chishti
David Talbot
Professor Alan Murray
et al.
Renal fistula assessment using automated thermal imaging2005
Professor John Allen
Karen Walker
Dr Bridget Griffiths
Professor Alan Murray
Skin temperature and objective colour measurements in patients with Raynaud’s phenomenon secondary to connective tissue disease2005
Dr Fiona Smith
Abigail Haigh
Joanne Wild
Emma Bowers
Professor John Allen
et al.
Study of the causes of blood pressure variability during manual sphygmomanometer measurement2005
Dr Philip Langley
Professor John Allen
Emma Bowers
Dr Michael Drinnan
Abigail Haigh
et al.
The ebb and flow of heart rate variability: Simulation of 24 hour heart rate time series using time series data from naturally occurring phenomena2005
Dr Nitin Kumar
Professor John Allen
Professor Alan Murray
Dr Bridget Griffiths
A pilot study assessing the response of single dose sildenafil citrate (Viagra) in the treatment of Raynaud’s phenomenon in patients with systemic sclerosis2004
Dr Philip Langley
Professor John Allen
Emma Bowers
Dr Michael Drinnan
Susan King
et al.
Analysis of RR Interval and Fibrillation Frequency and Amplitude for Predicting Spontaneous Termination of Atrial Fibrillation.2004
Professor John Allen
Dr John O'Sullivan
Susan King
Professor Alan Murray
Characterization of the Korotkoff sounds using joint time-frequency analysis2004
Professor John Allen
Professor Alan Murray
Age-related changes in multi-site photoplethysmographic peripheral pulse shape characteristics at various body sites2003
Professor John Allen
Professor Alan Murray
Age-related changes in the characteristics of the photoplethysmographic pulse shape at various body sites2003
Dr Philip Langley
Emma Bowers
Dr Michael Drinnan
Professor John Allen
Dr Andrew Sims
et al.
An algorithm to distinguish ischaemic and non-ischaemic ST changes in the Holter ECG2003
Dr Philip Langley
Emma Bowers
Nicola Brown
Dr Michael Drinnan
Professor John Allen
et al.
An algorithm to distinguish ischemic and non-ischaemic ST changes in the Holter ECG2003
Dr Andrew McLaren
Professor John Allen
Professor Alan Murray
Dr Clive Ballard
Professor Rose Anne Kenny
et al.
Cardiovascular effects of donepezil in patients with dementia2003
Professor John Allen
Professor Alan Murray
Dynamic characteristics of the peripheral pulse: an investigation into the differences between right and left body sites2003
Dr Louise Allan
Dr Andrew McLaren
Professor John Allen
Dr Clive Ballard
Professor Ian McKeith
et al.
Heart rate variability is reduced in dementia with Lewy bodies but not Alzheimer’s disease or vascular dementia.2003
Professor John Allen
Susan King
Time and frequency analysis of the Korotkoff sounds2003
Professor John Allen
[PhD Thesis] The measurement and analysis of multi-site photoplethysmographic pulse waveforms in health and arterial disease2002
Professor John Allen
Professor Alan Murray
Age-related changes in peripheral pulse timing characteristics at the ears, fingers and toes2002
Professor Alan Murray
Dr Philip Langley
Dr Fiona Smith
Professor John Allen
Dr Clive Griffiths
et al.
Contributions of cardiovascular physics and engineering to the solution of clinical problems2002
Dr Fiona Smith
Dr Emma Bowers
Dr Philip Langley
Professor John Allen
Professor Alan Murray
et al.
Heart rate variability characteristics required for simulation of interval sequences2002
Professor John Allen
Professor Alan Murray
Microvascular blood flow and skin temperature changes in the fingers following a deep inspiratory gasp2002
Professor John Allen
Professor Alan Murray
Photoplethysmography - a tool for assessing the microcirculation.2002
Dr Emma Bowers
Dr Philip Langley
Dr Michael Drinnan
Professor John Allen
Dr Fiona Smith
et al.
Simulation of cardiac interval time series2002
Dr John O'Sullivan
Professor John Allen
Professor Alan Murray
The forgotten Korotkoff phases: How often are phases II and III present, and how do they relate to the other Korotkoff phases?2002
Dr John O'Sullivan
Professor John Allen
Professor Alan Murray
A clinical study of the Korotkoff phases of blood pressure in children2001
Dr Philip Langley
Professor John Allen
Dr Emma Bowers
Dr Fiona Smith
Can paroxysmal atrial fibrillation be predicted?2001
Professor John Allen
Professor Alan Murray
Multi-site photoplethysmographic peripheral pulse measurement and shape analysis2001
Dr Michael Drinnan
Professor John Allen
Professor Alan Murray
Relation between heart rate and pulse transit time during paced respiration2001
Professor John Allen
Professor Alan Murray
Comparison of regional variability in multi-site photoplethysmographic pulse wave characteristics2000
Dr Michael Drinnan
Professor John Allen
Dr Philip Langley
Professor Alan Murray
Detection of sleep apnoea from frequency analysis of heart rate variability2000
Professor John Allen
Professor Alan Murray
Similarity in bilateral photoplethysmographic peripheral pulse wave characteristics at the ears, thumbs and toes2000
Professor John Allen
Dr Alan Murray
Variability of photoplethysmography peripheral pulse measurements at the ears, thumbs and toes2000
Professor John Allen
Professor Alan Murray
Modelling the relationship between peripheral blood pressure and blood volume pulses using linear and neural network system identification techniques1999
Professor John Allen
Professor Alan Murray
Multi-site photoplethysmographic peripheral pulse measurement and correlation analysis1999
Professor John Allen
Professor Alan Murray
Skin temperature and photoelectric plethysmography recovery characteristics during mild cold challenge testing in normal subjects1999
Professor John Allen
Professor Alan Murray
Skin temperature and photoplethysmography recovery characteristics during mild cold challenge testing in normal subjects1999
Professor John Allen
Professor Alan Murray
Assessing ECG signal quality on a coronary care unit1996
Professor John Allen
Professor Alan Murray
Prospective assessment of an artificial neural network for the detection of peripheral vascular disease from lower limb pulse waveforms1995
Professor Alan Murray
Professor John Allen
Simplified body-surface electrocardiographic maps with depolarization magnitude and direction1994