CE Robertson

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Modulus maxima derived from the continuous wavelet transform offers an enhanced time-frequency analysis technique for ECG signal analysis. Features within the ECG can be shown to correspond to various morphologies in the Continuous Modulus Maxima domain. This domain has an easy interpretation and offers a good tool for the automatic characterization of the(More)
We have found increased small intestinal permeability to 51Cr-ethylenediaminetetra acetate in patients with ankylosing spondylitis compared with controls. There is no significant difference between patients with ankylosing spondylitis and patients with rheumatoid arthritis taking non-steroidal anti-inflammatory drugs (NSAID). The increased intestinal(More)
We have compared different measurements of small intestinal permeability in 28 patients with Crohn's disease affecting the small intestine, 14 with ulcerative colitis and 17 controls. Patients and controls were given a drink containing 100 microCi (3.7 MBq) of 51Cr-ethylene diamine tetraacetic acid (51Cr-EDTA), 5 g lactulose, 5 g cellobiose, 1 g rhamnose,(More)
Cardiovascular disease is the commonest cause of death in Western society. For this reason much effort has been dedicated to the study of its origins, prevention and treatment. Our group has a specific interest in the analysis of the Electrocardiogram (ECG) in life threatening cardiac arrhythmias and its antecedents, with a view to providing diagnostic(More)
Ventricular Tachyarrithmias are one of the most dangerous cardiac pathologies often causing sudden death. Studies for the prediction of these events are based on feature extraction prior to their initiation. Ventricular Late Potentials are considered a marker of abnormality in ventricular function which can cause Ventricular Tachycardia and Ventricular(More)
Reassignment, a technique which sharpens the time frequency information within the time-frequency plane, can be applied to the wavelet transform to produce a more succinct, highly focused, representation. In this paper this technique is applied to interrogate and represent heart rate variation recorded by means of temporary reprogramming of a volunteer’s(More)
The fecal osmotic gap is considered to be useful in the investigation of chronic diarrhea. However, two important questions regarding the calculation of the osmotic gap remain unanswered: the effect of the method of measuring osmolality and the most appropriate means for its calculation. In 41 patients with varying causes of diarrhea, stool osmolalities and(More)
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