[Radiation diagnosis of cerebellar and fourth ventricle tumors].

Thirty four patients with tumors of the cerebellum and the fourth ventricle were examined. All the patients underwent craniography and computed tomography (CT), 28 had magnetic resonance imaging (MRI). According to the histological pattern, the tumors were divided as follows: astrocytomas in 14 patients, hemangioblastomas in 8, ependymomas of the fourth ventricle in 5, medulloblastomas in 3, choriopapillomas in 2, two patients were found to have metastases.

[The role of magnetic resonant tomography in the diagnosis of primary and metastatic brain tumors].

1035 patients of suspected brain formations have been examined in a low-field magnetic resonance tomography (MPT) study. Various patterns of brain tumors were identified in 772 cases and diagnosis was verified by other procedures. Among the most frequent were neuro-epithelial tumors (157), meningiomas (161) and metastatic lesions (136).

[Magnetic resonance imaging of brain neoplasms].

Magnetic resonance (MR) study of the brain using a low-field imager (0.04 T) was carried out in 1035 patients with suspected brain tumors which were detected and confirmed in 593 cases. The most frequent findings were neuroepithelial tumors, meningiomas, hypophyseal adenomas, and various metastatis lesions.

[Organization of fluorographic examinations of the population in large cities].

A 5-year experience with fluorographic examination of the population of Leningrad is described. The data show that it is untimely to prolong the intervals between check fluorographic examinations. Difficulties in forming the risk groups are also indicated.