[Evaluation of facial injury changes on spatial 3D CT scans]. / Ocena zmian urazowych twarzoczaszki na rekonstrukcjach przestrzennych 3 D TK.

Assessment of diagnostic value of spatial (3D) CT reconstructions obtained from two dimensional axial sections was performed on the basis of the material of patients with compound fractures of the facial cranium. In correlation with radiograms and axial CT sections fractures of the jaw and jugal bone, especially the mandible, were more distinctly reconstructed. 3D reconstructions were also significantly better in the assessment of rotational displacements of intussuceptional fracture fragments. There has not, however, been shown superiority of 3 D CT in revealing small, simple fissures.

Value of CT and NMR imaging in diagnosing of chordomas.

Chordomas usually occur in the axial skeleton and they arise from the remnants of notochord. Their growth is slow and they often give metastases. Such cases are mainly observed among people above 40 years of age. Most frequently chordomas are situated in sacral bone (50%), in spheno-occipital region of the skull base (35%), and in the cervical, dorsal and lumbar spine (15%). Very rarely chordomas are found within sella, paranasal sinuses and nasopharynx, and in the forms of ectopic foci in the pons and spinal canal. Such tumour situated within spine destroys vertebral bodies and arches and can bulge into subdural space causing impression of the dural sac. Despite osteolytic destruction, chordomas cause visible reactive sclerotization and characteristic granular calcifications or ossifications. Intracranial chordomas destroy bony base of skull, specially clivus, pyramids and sphenoid sinuses.

[Diagnostic recognition of nucleus pulposus prolapse in light of clinical and radiologic correlations]. / Rozpoznanie przepukliny jadra miazdzystego w swietle korelacji kliniczno-radiologicznej.

The authors compared the agreement between clinical, radiological and surgical diagnoses in 33 cases of nucleus pulposus prolapse. A complete agreement of diagnoses was obtained in 88% of cases. The mechanism and incidence of different signs and their importance for the diagnosis of nucleus pulposus prolapse are discussed. It should be stressed that the compression of nerve roots recognized on radiculography is not pathognomonic sign of prolapse and may be due to such processes as development of marginal osteophytes in the degenerative disc disease, thickening of the posterior longitudinal ligament, hypertrophy of radicular processes or necks of vertebral arches. In the light of own experiences and data from the literature the authors consider radiculography with Amipaque and computer tomography as the method of choice in cases with suspected disc herniation in the lumbar region.

[About the usefulness of computerized tomography in the diagnosis of intracranial arachnoid cysts]. / W sprawie przydatnosci tomografii komputerowej w rozpoznawaniu wewnatrzczaszkowych torbieli pajeczynówki.

The authors report 7 cases of intracranial arachnoid cysts diagnosed by the method of computerized tomography in a period of 3 years. In the light of own experiences and after a survey of literature the image of these cysts in CT scans is presented an the problems of differential diagnosis of this disease are discussed.