PubMed Health⌕ Search

Biomedical subjects

G Dimitriu

Publications and source records attributed to G Dimitriu.

At least 19 recordsLinked to original sources
PubMedDate not supplied

Multi-valued logic in breast cancer detection.

The aim of this paper is to determine the type of the breast cancer disease. The two classes of separation are malignant respectively benign. A multi-valued logic system (fuzzy system) was develop and applied in this classification. The system uses nine attributes as inputs that were scaled with an integer value in the range between 1 and 10. The attributes represent: 1. Clump Thickness, 2. Uniformity of Cell Size, 3. Uniformity of Cell Shape, 4. Marginal Adhesion, 5. Single Epithelial Cell Size, 6. Bare Nuclei, 7. Bland Chromatin, 8. Normal Nucleoli, 9. Mitoses. After training the system managed to get a good detection with an error less than 5%.

Algorithms↗
PubMedDate not supplied

[The effect of antihypertensive drugs on the anaesthetic effect of lidocaine in hypertensive patients who need dental treatment].

The study evaluated the influence of atenolol/nifedipine on the local anaesthesia with lidocaine in 64 patients with essential arterial hypertension following dietetic regimen and divided in: control group (21 patients), atenolol-treated group (21 patients with atenolol therapy) and nifedipine-treated group (22 patients with nifedipine therapy). Atenolol/nifedipine was administrated three hours before anaesthesia (1.5 mg lidocaine/kg body weight) applied on Spix Spina. The atenolol/nifedipine influence on the anaesthetic intensity was evaluated both by the patient and dentist using scales for the appreciation of pain intensity (Visual Analogue Scale, Numerical Rating Scale) at 0 minutes (before anaesthesia), 5, 10, 20, 30, 60 minutes (moments for the determination of lidocaine plasmatic concentrations). There were no statistically significant differences between the values appreciated by the patient and dentist. Our data demonstrated a significant decrease of pain intensity in patients treated with atenolol/nifedipine. Very good inverse correlation was found between lidocaine concentrations and pain intensity.

Anesthesia, Dental↗