[Gastric and intestinal appearances by abdominal ultrasound. The sign of brownian motion (author's transl)]. / Les images gastriques et intestinales en ultrasonographie abdominale. Le signe du mouvement brownien.

Gastric, as well as intestinal images, are always present on abdominal ultrasonic scans. Since they are difficult to analyse, such images are usually neglected. Morphological and dynamic criterial (as the "brownian movement sign") enable to identify stomach and intestine. It is then possible to avoid the misinterpretation of normal anatomic elements as pathological processes, and, from time to time, to diagnose specific gastrointestinal lesions.

[Metastases of the cervico-occipital junction. The value of tomographic detection of prefracture forms (author's transl)]. / Les métastases de la charnière cervico-occipitale. Intérêt de la détection tomographique des formes pré-fracturaires.

The authors stress the frequency of metastases of the cervico-occipital junction unrecognized in medical literature: 30 cases have been diagnosed within four months. They report their different patterns and complications and insist on the prefractured pattern with osteolysis of the body of C-2 which can be shown only by polytomography. The authors propose that a tomographic study of the cervico-occipital junction should be systematically included in every analysis of metastatic extension of osteophilic tumors.

[Irradiation in radiodiagnosis: recent possibilities of decreasing the doses (author's transl)]. / L'irradiation en radiodiagnostic: possibilités récentes de diminution des doses

Depending on the film used, the new super-fast re-enforcing screens enable a four to six fold reduction in diagnosis cutaneous irradiation. This diagnosis irradiation which remains rather considerable under classical techniques, is frequently injustly neglected: the distribution of this new type of material seems desireable. On the contrary, the use of xeroradiography leads to an irradiation which is three times greater than in conventional techniques and fifteen times greater than in these new techniques: xeroradiography must therefore be reserved for very specific problems.