Andrew P. Martin

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The potential roles of intravascular ultrasound (US) and magnetic resonance (MR) imaging in evaluating the artery wall and atherosclerotic plaque were compared. Excised human femoral and carotid arteries were imaged with a 42-MHz intravascular US system and a 1.5-T MR imager equipped with enhanced gradients. In-plane resolution was 40-280 microns for US and(More)
OBJECTIVE To adjust patients' time trade-off (TTO) scores using information on their utility functions for survival time to derive a measure of health state utility equivalent to the standard gamble (SG). METHODS A sample of 199 cardiovascular patients were asked three TTO and SG questions (to assess their own health state), and three certainty equivalent(More)
This paper proposes an XML format for standard Z.We describe several earlier XML proposals for Z, the problems and issues that arose, and the rationales behind our new proposal. The new proposal is based upon a comparison of various existing Z annotated syntaxes, to ensure that the mark-up will be widely usable. This XML format is expected to become a(More)
The authors studied the magnetic resonance (MR) imaging appearance of excised human arteries and correlated these findings with those from histologic sections obtained in corresponding planes. Imaging was performed with a 1.5-T clinical imager modified with an additional gradient insert capable of a 30 mT/m gradient. High-resolution images of arteries(More)
1. This was a randomized, double-blind comparison of the efficacy and safety of venlafaxine and fluoxetine in outpatients with major depression. 2. Three hundred fourteen patients were randomly assigned to either venlafaxine 37.5 mg twice daily or fluoxetine 20 mg once daily for a maximum of 8 weeks. 3. If the response was inadequate after two weeks of(More)
Titanium cranioplasty (TC) has been associated with high complication rates, but abundant data are lacking. We aimed to determine the incidence and type of complications following TC and risk factors for complications. A retrospective review was performed on 174 patients who underwent TC at two London units over a seven year period. Data were collected on(More)
BACKGROUND In childhood the relationship between lung size and stature changes during the adolescent growth spurt. This is not allowed for in models of lung function based on stature alone. For spirometric indices inclusion of an age x stature interaction (A x St) can overcome the difficulty. AIM The study tested the hypothesis that this simple,(More)