Philippe Quandalle

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Discrete transforms are introduced and are defined in a ring of polynomials. These polynomial transforms are shown to have the convolution property and can be computed in ordinary arithmetic, without multiplications. Polynomial transforms are particularly well suited for computing discrete two-dimensional convolutions with a minimum number of operations.(More)
We compared the rectal microflora of 16 patients with surgically excluded colorectum with 16 healthy controls. The cause of diversion was inflammatory bowel disease (n = 10), colon cancer (n = 3), miscellaneous (n = 3). Six patients had a diversion colitis. In the excluded colorectum, the total bacterial count was only slightly lower than controls but the(More)
The aim of this study was to search for small bowel lesions by means of a perioperative endoscopy in 20 patients operated on for Crohn's disease. Seven women and 13 men (mean age 29 years) had a total retrograde exploration to the angle of Treitz during an ileocolectomy (16 of 20 patients) or a colonic or ileal resection (four of 20 patients). Endoscopic(More)
Background. Several studies suggest that repeated percutaneous transluminal coronary angioplasty procedures at the same site are associated with a progressively increasing risk of further restenosis and
BACKGROUND ST-segment depression during exercise testing is frequently observed in the absence of restenosis after coronary angioplasty. METHODS AND RESULTS We studied the determinants of this phenomenon in 70 consecutive patients with unstable angina related to a single left anterior descending coronary artery lesion who had successful angioplasty(More)
INTRODUCTION There are little data about patients with cardiogenic shock (CS) who survive the early phase of acute myocardial infarction (AMI). The aim of this study was to assess long-term (5-year) mortality among early survivors of AMI, according to the presence of CS at the acute stage. METHODS We analyzed 5-year follow-up data from the French registry(More)