Adobe Photoshop CS4 Manual de usuario descargar pdf (Pagina 611)

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USING PHOTOSHOP CS4

3D and technical imaging

Last updated 1/10/2010

Note: Any measurement scale present in a DICOM file is automatically imported with the file. If no scale is present, the

default scale of 1 pixel = 1 mm is added as a custom measurement scale. See

“Set the measurement scale (Photoshop

Extended)” on page 607.

You can save 8-bit DICOM files in any file format Photoshop supports (16-bit files must be saved as DICOM, Large

Document Format, Photoshop, Photoshop PDF, Photoshop Raw, PNG, or TIFF files).

Important: When you save a file as DICOM, any layer styles, adjustments, blend modes, or masks are discarded.

You can also view and edit metadata for DICOM files in Bridge or in the Photoshop File Info dialog box. DICOM files

support external automation through scripting (see

“About scripting” on page 632).

For a video about DICOM files, see www.adobe.com/go/vid0028.

More Help topics

“About notes” on page 471

“Paint with the Brush tool or Pencil tool” on page 333

“Apply the Dust And Scratches filter” on page 404

About DICOM files video

Open a DICOM file (Photoshop Extended)

Before you open a DICOM file, you can specify how DICOM frames are opened (as layers, in a grid, or as a 3D

volume), and set options (in the DICOM File Import dialog box) that anonymize patient metadata and display

overlays. During the import you can also perform pans, zooms, and window leveling.

The DICOM import dialog box also displays DICOM header information—textual information about the file, such as

its dimensions, data resolution, and whether the data has been compressed.

You can import a sequence of multiple, single-frame DICOM files into a single multilayered Photoshop file, using the

New Video Layer from File command. See “Import image sequences (Photoshop Extended)” on page 543.

For a video on opening DICOM files, see www.adobe.com/go/vid0028.

1 Choose File > Open, select a DICOM file, and click Open.

2 Select the frames you want to open. Shift-click to select contiguous frames. To select noncontiguous frames, Ctrl-

click (Windows) or Command-click (Mac

OS). Click Select All to select all frames.

To quickly scroll through frames, use the mouse scroll wheel (Windows) or click the Right or Left Arrow buttons below

the large preview area.

3 Choose from the following options, and then click Open.

Frame Import Import Frames As Layers places DICOM frames on layers. N-Up Configuration displays multiple

frames in a grid (enter values in the Rows and Columns boxes to specify height and width of grid). Import as volume

opens the DICOM frames as a volume, where the z-distance is determined by DICOM settings and data is interpolated

between the frames. You can view the volume from any angle, using a variety of rendering modes to highlight data.

DICOM Dataset Anonymize overwrites patient metadata with “anonymize.” Show Overlays displays overlays such as

annotations, curves, or text.

Windowing Select Show Windowing Options to adjust the contrast (Window Width) and brightness (Window Level)

of the frame. Alternatively, you can drag the Window Level tool up or down to adjust the level, or to the right or left

to adjust the width. You can also choose common radiology presets from the Window Preset menu (Default, Lung,

Bone, or Abdomen). Select Reverse Image to invert the brightness values of the frame.

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