[Nuclear magnetic resonance studies of the orbit].

Magnetic resonance tomography enables sensitive and specific three dimensional imaging processes in the bulbus, the soft parts of the orbita and the optic foramen as well as their relation to intracerebral structures. Besides a very exact imaging of the morphology it is also possible to characterise the tissue, this being a decisive factor in arriving at a correct diagnosis.

[MR imaging of the knee joint plain, following intra-articular administration of gadolinium DTPA, saline and air].

Noninvasive MRI of the knee joint yields a great deal of information on soft parts (ligaments, capsule, free fluid, menisci, cartilage) and bones. The image is changed by intraarticular administration of air and of small quantities of fluids supply many signals, such as gadolinium DTPA solution. The results and possibilities of application are discussed.

[MRT of the unoperated knee joint and the knee joint following alloplastic ligament replacement (polyethylene terephthalate)].

When using the spin-echo technique natural, ligament and menisci have practically nearly no signal. Degenerative lesions, lesions of cartilage, and osteochondrosis dissecans are visible. After ligament plastic the bore canal for the alloplastic ligament is visible.

[Possibilities of magnetic resonance tomography in cardiac diagnosis].

32 patients with different cardiac lesions underwent examinations by magnetic resonance imaging (MRI). In order to reduce moving artefacts measurements were carried out with ECG-triggering. It was possible to make visible precise anatomical details of the heart in cases of congenital diseases, aneurysms, myocardial infarction etc.

[Comparison of the conventional roentgen image, cervical myelography and nuclear magnetic resonance in avulsion of the spinal nerve roots of the lower cervical spine].

MT tomography offers an excellent opportunity of indirectly proving that traumatic exairesis of a nerve root has occurred. If a nerve root pocket is "empty" as a result of the exairesis, it is filled completely with central nerve fluid CNF and is then easily visualised.