Michael Meves

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PURPOSE We developed an artificial neural network analysis (ANNA) to predict prostate cancer pathological stage more effectively than logistic regression (LR) based on the combined use of prostate specific antigen (PSA), biopsy Gleason score and pelvic coil magnetic resonance imaging (pMRI) in patients with clinically organ confined disease before radical(More)
OBJECTIVE An artificial neural network analysis (ANNA) was developed to predict the biochemical recurrence more effectively than regression models based on the combined use of pelvic coil magnetic resonance imaging (pMRI), prostate specific antigen (PSA) and biopsy Gleason score in patients with clinically organ-confined prostate cancer after radical(More)
Within the framework of this study, the factors that impair the value of MR scans were also investigated and analysed. It was found that artifacts occurred in a large number of examinations that exercised a negative effect on the results. Artifacts are particularly seen in the thorax (54%) and upper abdomen (57%), but they have also been reported in 23% of(More)
OBJECTIVES To develop and test an artificial neural network (ANN) for predicting biochemical recurrence based on the combined use of pelvic coil magnetic resonance imaging (pMRI), prostate-specific antigen (PSA) measurement, and biopsy Gleason score, after radical prostatectomy and to investigate whether it is more accurate than logistic regression analysis(More)
The results of computed tomography and magnetic resonance imaging in patients with histologically proved carcinoma of the esophagus or of the cardia were correlated with previously administered barium swallow X-ray studies and postoperative pathologic-anatomic findings. A good estimation of resectability is achieved combining barium swallow and CT studies,(More)
1. Ulcer disease cause a change of gastric emptying; in patients with gastric ulcer gastric emptying of a semisolid meal is delayed as well as in patients with stenosis in the pyloricregion; patients with an uncomplicated duodenal ulceration shows an accelerated gastric emptying. 2. Vagotomy results in relation to the type of vagotomy and to the degree of(More)
28 investigations were performed in control patients with no gastric disease (n equals 10), in patients after total gastrectomy (n equals 10) and in patients after duodenopancreatectomy (n equals 8). We measured the serum gastrin concentrations in the fasting state and after the ingestion of a test meal. The results indicate that more than 60% of the(More)