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Biomedical subjects

F M Liass

Publications and source records attributed to F M Liass.

72 records · Page 4Linked to original sources
PubMedDate not supplied

[The CT-stereotaxic neutron brachytherapy of brain tumors with californium sources on the ANET-B apparatus].

A method for stereotaxic intratissue radiotherapy of brain tumors based on the findings of computed tomography is described. Radiosurgical implantation of sources with increased 252Cf content emitting mixed neutron + gamma-radiation was accomplished by means of an ANET-B apparatus by the afterloading method. Neutron irradiation is particularly effective in patients with malignant tumors possessing a large fraction of cells in a state of deep anoxia. Dosimetric planning was conducted by means of an original computer system. Devices and radiation-technical equipment for adaptation of the ANET-B apparatus for irradiation of neurosurgical patients are described. The indications for the use of this method and its place among the complex of measures for the treatment of patients with new growths of the brain are discussed. The first experience in using CT-stereotaxic neutron brachytherapy with californium sources on the ANET-B apparatus for the treatment of 6 patients with malignant glial tumors of the brain is dwelt on.

Adult↗
PubMedDate not supplied

[The role of radiation therapy in treating hypophyseal adenomas].

The article reviews various methods for the exposure of pituitary adenomas to the effect of radiation applied either as the only measure or in combination with surgery and drug therapy. The indications for radiotherapy are discussed according to the size and hormonal activity of the tumor.

Adenoma↗
PubMedDate not supplied

[Gamma-topography of the cerebrospinal fluid passages of the spinal cord in traumatic injuries of the brachial plexus at the preganglionic level].

Gamma-topography of the cerebrospinal fluid tracts of the spinal cord (GCTSC) was conducted in 28 patients with traumatic injuries of the brachial plexus at the preganglionic level. The object of GCTSC was to identify the character of damage inflicted to the spinal cord, its meninges, and the roots at the preganglionic level in the presence of the pain syndrome. Spatial-temporal distribution of the radiopharm agent in the submeningeal space served as the basis for setting apart radiological signs characterizing the anatomical disorders and disturbances in cerebrospinal fluid dynamics in the submeningeal space of the spinal cord. The radiological picture was always composed of adhesive-cicatricial and adhesive-cystic processes with arachnoid cysts or cerebrospinal fistulas in the cervicothoracic segment of the spinal cord.

Adult↗
PubMedDate not supplied

[Reorganization of cerebral hemodynamics after occlusion of the afferent vessels of arteriovenous aneurysms].

The character of blood supply to the affected cerebral hemisphere was studied on the basis of angiography performed before and after occlusion of the afferent vessels of large arteriovenous aneurysms in 90 patients and study of cerebral circulation on a gamma chamber in 30 patients. It was established that the affected cerebral hemisphere is supplied with blood from the vascular basin of the same side. The importance of the regional blood flow is determined by the localization and the sources of blood supply to the aneurysm. Before the operation, the maximum decrease of regional blood flow was found in zones with contiguous blood supply, namely in the parietal and parieto-temporal areas. The occlusion of afferent vessels of the aneurysm leads to an increase in the flow of blood aneurysm is supplied with blood from the cortical arterio-arterial anastomoses in the zones of contiguous blood supply.

Arteriovenous Fistula↗