[The CT-stereotaxic neutron brachytherapy of brain tumors with californium sources on the ANET-B apparatus]. / KT-stereotaksicheskaia neitronnaia brakhiterapiia opukholei golovnogo mozga kalifornievymi istochnikami na apparate "ANET-B".

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.

[Computerized system of dosimetric planning of interstitial multiposition stereotaxic irradiation in neutron therapy of brain tumors]. / Kompiuternaia sistema dozimetricheskogo planirovaniia vnutritkanevogo mnogopozitsionnogo stereotaksicheskogo oblucheniia pri neitronnoi terapii opukholei golovnogo mozga.

A computerized system PLUT-B intended for a dosimetric design of stereotaxic neutron brachytherapy of brain tumors, was developed. It is capable of simulating dose distribution in various parameters of irradiation, manipulating them, retaining the surgical aspects within the field of vision, and arriving at an acceptable dosimetric plan. The system permits visualization of a target with an applied dose field in the multiwindow mode, layer-by-layer vision in any direction, displaying a scheme of implantation, and drawing up of maps of isodose distributions. It is intended to be used by a physician, convenient in operation, the time at the design stage is 35-40 minutes.

[Radiation dosage exposure of the population of the USSR from x-ray diagnosis and means for its reduction]. / Dozovye nagruzki na naselenie SSSR pri rentgenodiagnostike i mery ikh snizheniia.

The paper is concerned with main values of dose exposure of the USSR population as a result of medical roentgenological investigations. The authors issue practical organizational-methodological recommendations for irradiation reduction resulting from giving up chest x-ray, a decrease in prophylactic fluorography, improvement of technical facilities for investigations of the digestive tract, and organization of roentgenoradiological departments as independent health service units.

[Single-photon emission-computed tomography of the head using labelled amines in visualizing the cerebral microcirculation]. / Odnofotonnaia émissionnaia komp'iuternaia tomografiia golovnogo mozga s mechennymi aminami pri vizualizatsii mozgovoi mikrotsirkuliatsii.

The authors presented clinical material on cerebral hemodynamics in patients with neurological pathology in suspected tumor vascular cerebral diseases and craniocerebral traumas. Investigation of cerebral microcirculation was performed using a multidetector single-photon emission tomograph "Testoscan" (USSR) after iv administration of 99mTc-hexamethylpropilene-amyloxine. This radiopharmaceutical is good for the evaluation of cerebral perfusion and gives a clinician rich information on cerebral microcirculation.

[Single-photon emission-computed tomography with the Testascan multidetector gamma tomograph in neurologic practice]. / Odnofotonnaia émissionnaia komp'iuternaia tomografiia s mnogodetektornym gamma-tomografom TESTASKAN v nevrologicheskoi praktike.

The paper is concerned with the results of single-photon emission tomography and gamma-topography in patients with cerebral tumors, cerebral circulatory disorders and pathology of the liquor system. Tomographic investigation was shown to enhance the accuracy and reliability of the detection of cerebral tumors. Single-photon emission computerized gamma-tomography (SPECT) permitted the detection of structural and morphological cerebral changes in disturbed cerebral circulation of various etiology. SPECT together with computerized tomography and radionuclide cisternography was shown to be an auxiliary method for visualization of the cerebral cisterns. Radionuclide tomographic images as compared to gamma-topographic findings of the brain possessed a high statistical significance and good resolution.

[The efficacy of gamma teletherapy in the combined treatment of medulloblastomas in the posterior cranial fossa of children]. / Effektivnost' distantsionnoi gamma-terapii pri kombinirovannom lechenii meduloblastom zadnei cherepnoi iamki u detei.

The results of radiation therapy conducted after various schemes were compared in 77 patients operated on for medulloblastoma of the posterior cranial fossa: 1. irradiation of the posterior cranial fossa area; 2. irradiation of this area and the entire length of the spinal marrow; 3. total irradiation of the CNS. Stages in a metastatic process necessitate irradiation in stages, i.e. irradiation of the posterior cranial fossa and the length of the spinal marrow followed by irradiation of the cerebral hemispheres one year after the operation. Total irradiation of the CNS shortly after the operation is recommended only in the presence of early metastases.

[Radioanatomy of cerebral perfusion in single-photon emission-computed tomography using 99mTc-labelled amines]. / Radioanatomiia mozgovoi perfuzii pri odnofotonnoi émissionnoi komp'iuternoi tomografii s mechennymi 99mTc aminami.

A study was made of the cerebral hemodynamics by assessing the distribution in single-photon emission computerized tomography with 99mTc-hexamethyl-propyleneminoxyne in health using a Testascan in 9 standard slices. The whole set of tomographic slices was conventionally divided into 3 levels. For better orientation in gamma-tomographic images, pictures were presented where in addition to scintigrams a morphological scheme of the cerebral parts with the marked parts perfused by cerebral arteries, was given.

[The role of radiation therapy in treating hypophyseal adenomas]. / Mesto luchevoi terapii v lechenii adenom gipofiza.

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.