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Biomedical subjects

M Mortier

Publications and source records attributed to M Mortier.

8 recordsLinked to original sources

Upconversion fluorescence imaging of erbium-doped fluoride glass particles by apertureless SNOM.

We have imaged fluorescent erbium-doped fluoride glass particles by apertureless scanning near-field optical microscopy. The optical excitation has been performed at lambda = 780 nm whereas fluorescence emission has been collected around lambda = 550 nm. This process, called upconversion by energy transfer, involves two erbium ions and is not linear. Besides an improvement of the lateral resolution, we have observed on some particles that the fluorescence is not homogeneously distributed, but is rather localized in some zones brighter than others. By making tip approach curves, we have also observed that the amount of fluorescence intensity scattered by the tip is increasing when the tip is approaching the sample surface.

Journal Article↗

Heparin-induced thrombocytopenia and fat necrosis of the breast.

Fat necrosis of the breast is a well-known complication following trauma, surgery, or radiotherapy. The present paper describes a rare case of fat necrosis after heparin-induced thrombocytopenia. The mammographic, sonographic, and MR evaluation and pathologic correlation after a 1-year follow-up period are reported.

Aged↗

Lesion detection in breast carcinoma.

Early detection and identification of infraclinic breast lesions are a challenge for the radiologist. Diagnostic accuracy relies on careful analysis of some important mammographic clues, which are discussed in this paper. In particular, asymmetric breast tissue, focal asymmetric density, nonpalpable solid masses, stellate lesions and calcifications are reviewed.

Breast↗

[Breast calcifications].

Calcifications are found in many women undergoing mammography. The majority of these calcifications are benign. Calcifications suggestive for malignancy prove to be cancer in about 30% of cases after biopsy. Study and personal experience should result in ready recognition of characteristically benign calcifications. Calcifications suggestive for malignancy should be biopsied and the ratio of malignant over benign biopsies should be as high as possible. The purpose of this paper is to present a practical approach to the evaluation of breast calcification, by means of a survey of the pattern of calcifications in breast pathology. We describe six types of typically benign calcifications and six criteria that entail an increased risk of malignancy.

Breast Diseases↗

[Legal liability of the radiologist in missed breast cancer diagnosis].

There have been few lawsuits alleging missed breast cancer diagnosis in Belgium so far. However, since the introduction of the Flemish organised breast cancer screening program in June 2001, one might expect an increase in the years to come. In the present paper, we focus on risk management pointers that minimize the risk of incurring a malpractice lawsuit.

Belgium↗