Topics covered in this article include:

• Introduction
• Measurement Summary
• Instructions
• Available Tests
• Detailed Discussion of Measurements

Introduction

The MultiMet-WL Cube provides a method to measure off-axis Winston Lutz for clinics using single-isocenter multiple-met SRS treatments.

Measurement Summary

The analysis software provides the following measurements:

• Couch Rotation
• Collimator Rotation
• Principal Axes Offset
• Positional Angular Offset
• Target 3D Deviation
• 2D Image Deviations (Isocenter
• 2D Image Deviations for each target

Instructions

The test requires a PDF file. Refer to the reference manual from the manufacturer for details on exporting the PDF file. Select either "SNC MultiMet" in the Type field in the upload widget to identify the file(s). Below is an example of selecting the image type in the upload widget:

Add files to the upload queue by drag them from a Windows Explorer folder to the drag and drop folder and release them. Alternatively, by clicking on the Add Files button to the lower right of the control, a windows file selection dialog will open, and files can be selected for upload. Under either method, multiple files may be selected for upload at once.

If the automatic upload checkbox is checked (the default), then file uploading will start immediately as files are added.

If the automatic upload button is turned off, the file upload process must be started manually by clicking the Start upload button on the lower right of the control. To clear the upload queue, click the Clear button.

Once file series have been uploaded, they will be displayed below the upload control. To remove a series from the queue, click the Cancel button beside the series. To start processing, click the Start Processing button. A description for the image series can be added at this point. Click the Edit button next to the series. Type a description for the series into the text box that appears below Description, and either click Save or press the enter key. The description can also be edited after the images have been processed. Descriptions will appear in the report with the analysis of the series. 

While files are being processed, users may perform other tasks such as data entry.

Available Tests

The following tables show the tests to select in the template builder corresponding to the supported analyses.

Detailed Discussion of Measurements

Below is an example of the report generated: