Virtual Simulation

The CT-simulation process allows for rapid data acquisition, efficient contouring of key structures, and the selection of an isocenter for a particular patient. The 3-D reconstruction of a patient model will be complete with the generation of a digitally reconstructed radiograph (DRR) with the target volume and/or critical structures superimposed upon the images. The CT-simulation allows the treatment planner/radiation oncologist to draw contours around the tumor, target, and normal tissues on a slice-by-slice basis, and, at the same time, view the contours on planar images from both AP and lateral projections. In addition, improved edit functions allow the user to move, scale, and rotate a contour in addition to providing tools for rapid corrections, changing the shape of a contour, automatic adjusting of a copied contour to fit a new organ boundary, and copying to inferior and superior slices.

Simulation treatment planning can take minutes or hours, depending upon the complexity desired. The average length of CT-simulation is less than 1 hour, including patient positioning and CT data acquisition with an average of 40 slices. Physician contouring of target volume can occur at the time of simulation or after the patient has left the facility. Several treatment plans can be generated using the CT data and the various beam angles and portal apertures can optimized after the patient has left the simulation room as long as sufficient fiducial reference marks are made on the patient's skin and immobilization device to allow precise repositioning at the treatment machine. Not only does this virtual simulation allow for the optimal plan to be generated but it is also possible to avoid the selection of beam directions that are untreatable because of complex treatment geometry (ie, incompatible table and gantry rotations) before the patient returns to the center for treatment.

Contact Us

Phone: 717-274-7500
Address: 845 Tuck St.
 Lebanon PA