The purpose of the paper is to present and evaluate the performance of a new software-based registration system for patient setup verification, during radiotherapy, using electronic portal images. The estimation of setup errors, using the proposed system, can be accomplished by means of two alternate registration methods. (a) The portal image of the current fraction of the treatment is register...

Resource synchronization is critical to processes in which some tasks require the simultaneous collaboration of multiple professionals. To understand the effect of collaboration on productivity, we conduct an empirical study of hospitalists—hospital medicine physicians—at Northwestern Memorial Hospital in Chicago. A hospitalist’s patient-care routine includes visiting patients, making diagnoses...

AIMS AND BACKGROUND The present case report describes vertebral metastasis retreatment using kilovoltage cone-beam computed tomography (CBCT) for setup error correction, in order to improve target irradiation and prevent spinal cord toxicity. We evaluated the feasibility of the second radiation therapy course on the overlapping treatment volume. METHODS AND STUDY DESIGN A patient with metasta...

A noninvasive localization and immobilization technique that facilitates planning and accurate delivery of both intensity modulated radiotherapy (IMRT) and linac based stereotactic radiotherapy (SRT) of intracranial tumors has been developed and clinically tested. Immobilization of a patient was based on a commercially available Gill-Thomas-Cossman (GTC) relocatable frame. A stereotactic locali...

PURPOSE To develop a fast and generalizable method which can identify all possible hardware collisions specific to a given patient setup before treatment planning. METHODS An anthropomorphic phantom placed in a typical breast setup using a wingboard was simulated on a CT scanner and the phantom body contour, table, and gantry geometry were made into polygon meshes using 3D modeling software. ...

OBJECTIVE Proprietary intermediate telehealth devices are those which are specifically designed as connectors between the entities of telehealth systems. This article seeks to understand what are the capabilities of such devices and then to investigate how these are clustered on the current generation of devices. MATERIALS AND METHODS Fourteen current-generation devices available from 12 devi...

This report presents an analysis of patient setup errors resulting from inaccurately positioned wall lasers. It suggests that laser beams should agree within 0.2 degree or better with the machine axes that they are delineating. For typical simulator and treatment rooms having wall-to-isocenter distances of 3 m, this requirement is satisfied when the beam-emitting aperture is mounted within abou...

Many of the computer science researchers now work for design automatic system for fast & accurate recognition of tuberculosis(TB), to speed up the treatment process of patient to save patient life. Any type of research is not possible without data. It is critical for computer researcher to prepare Ziehl-Neelsen stain sputum smear slide & to setup image acquisition technique on simple light micr...

The aim of this study is to develop a new method to align the patient setup lasers in a radiation therapy treatment room and examine its validity and efficiency. The new laser alignment method is realized by a device composed of both a metallic base plate and a few acrylic transparent plates. Except one, every plate has either a crosshair line (CHL) or a single vertical line that is used for al...