RESUMEN
Radiation treatment planning systems (RTPS) are evolving on a rapid and continual basis. After the evaluation of several commercial systems, we have developed a list of features we consider desirable in a product. The goal in the compilation of these criteria was a comprehensive worksheet which categorized the characteristics of RTPS into hardware (computer and peripheral devices), 2-D planning tools, 3-D planning tools, irregular field planning tools, and brachytherapy planning. With these distinctions, one can evaluate a system conforming to the specific planning needs, e.g., conformal therapy, dynamic therapy capabilities, or optimized remote afterloading brachytherapy, of a department. The rationales of the special requirements are provided for justification.
Asunto(s)
Planificación de la Radioterapia Asistida por Computador , Braquiterapia , Recolección de Datos , Estudios de Evaluación como Asunto , Humanos , Procesamiento de Imagen Asistido por Computador , Dosificación Radioterapéutica , Radioterapia de Alta Energía , Tomografía Computarizada por Rayos XRESUMEN
A stereotactic radiosurgery technique is described which allows stereotactic radiation therapy to be easily fractionated on a daily or weekly basis. This permits adequate and safe radiation therapy to lesions larger than 2.5 cm, such as large arteriovenous malformations, and possibly safer radiation to smaller lesions near crucial intracranial structures. The technique utilizes external scalp landmarks and avoids the need for standard stereotactic head devices.
Asunto(s)
Radioterapia/instrumentación , Técnicas Estereotáxicas/instrumentación , Diseño de Equipo , Humanos , Aceleradores de Partículas , Dosis de RadiaciónRESUMEN
This communication reviews one institution's experience in developing a reliable and accurate radiation therapy record form. The design of a daily record is highly subjective. With the subjectivity of this process in mind, the purpose of this presentation is to describe the advantages of our form and to acquaint the reader with the literature useful in preparing a therapy record that fulfills their facility's requirements.
Asunto(s)
Registros Médicos , Radioterapia , Control de Formularios y Registros , HumanosRESUMEN
A simple technique has been designed which identifies the gantry isocenter and aligns the laser beams to the isocenter of the gantry within 3-5 min with an error of less than 0.75 mm, depending upon the accuracy of gantry rotation.
Asunto(s)
Terapia por Láser/métodos , Técnicas EstereotáxicasRESUMEN
A dose table that provides the dose as a function of fractions of peripheral volume for 125I implants is presented. The table is based on seed distributions from 50 actual patient implants. Computer dosimetry was used to determine peripheral doses and dose ranges within implant volumes. The effects of seed distribution were also examined. The patient data and a study of computer-generated randomized seed coordinates within a given volume suggest that matched doses do not depend strongly on the exact position of each seed. The table provides the means for planning an implant to obtain a desired peripheral dose that can be directly compared with the postimplant computer dose calculation.