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Removing Hidden Patient Data from Digital Images in PowerPoint

¹ Department of Radiology, Beth Israel Deaconess Medical Center and Harvard Medical School, WCC, Room 306, 1 Deaconess Rd., Boston, MA 02215.

View larger version (74K): [in a new window]   Fig. 1 —Screen captures of PowerPoint 2003 (Microsoft) showing process steps for exporting all slides to bitmap images. In this example, 51 images (i.e., slide01.bmp, slide02.bmp, etc.) are exported to desktop folder named Output. Other picture formats such as PNG and JPG can also be used in this process.

View larger version (65K): [in a new window]   Fig. 2 —Screen captures of PowerPoint 2003 (Microsoft) showing use of Photo Album function to create new presentation from individual images—in this example, same 51 images exported from Figure 1 as source images. Select Fit to Slide option to preserve original dimensions. Click Create button to generate new presentation.

View larger version (41K): [in a new window]   Fig. 3 —Screen captures of PowerPoint 2003 (Microsoft) using Compress Pictures function to eliminate cropped areas from all digital images within presentation. Also, selecting both Web/Screen and Compress Pictures options will optimize file size for presentation. Function can also be used in solution 1 to reduce file size after global conversion.

View larger version (31K): [in a new window]   Fig. 4 —Screen captures showing use of Save as Picture function to eliminate hidden patient information. First, select three overlaying rectangles and background CT image using simple click-and-drag action. Then, click (right mouse) on selected items to bring up pop-up menu. In this menu, click on Save as Picture function and save items as PNG pictures on desktop. Next, delete selected items from PowerPoint slide and reinsert PNG picture back into slide using drag-and-drop.

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