Siemens ARTIS 2 S Service Manual Page 306
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Image Viewing and Image Processing
Image Postprocessing
42 / 112 AXA4-100.620.08.01.02 Operator Manual
Defining window and filter values
Information about windowing
With contrast and brightness windowing you can adapt the image to display the
gray scale region of interest with optimal contrast conditions.
The individual pixels of an X-ray image are stored as integer values. These values
represent a range of image brightness divided into increments much finer than
the human eye can perceive. The monitor can display a specific (smaller) range
of brightness values. The purpose of the windowing function is to define the
range to be displayed and the way it should be displayed.
DR images The displayed window area is defined by a pair of numbers.
The values used for non-subtracted images are the window center = WC and the
window width = WW.
DSA images DSA images displayed after subtraction (difference between fill and mask) can be
windowed in the same way as native images.
For subtracted images, the window brightness = WB and the window contrast =
WC are used.
Principle of windowing (display contrast agent/bones black)
- Operator Manual 1
- Volume 2 1
- AXIOM Artis 1
- Overall Table of Contents 3
- Part: Examination 4
- Part: Special Examinations 5
- Part: Exam Sets 5
- Part: Quantification 6
- Part: Troubleshooting 7
- Abbreviations/Glossary 35
- Application 43
- System configurations 43
- Equipment in the Control Room 45
- Imaging system overview 45
- LCD monitor(s) 46
- SIMOMED monitor(s) 47
- Keyboard 48
- CD drive 52
- ON box with CD drive(s) 53
- Intercom system 54
- On-site equipment 55
- Acquisition system overview 57
- Overview Artis dBC/dBA 59
- The top stand (Artis dBC/dBA) 60
- Overview Artis dTC/dTA 61
- Artis dTC/dTA Stand/C-arm 62
- Floor-mounted patient table 63
- Accessory rails 65
- Connectors 65
- Overview Artis dMP 66
- Artis dMP Stand/C-arm 67
- Trolley for control modules 68
- Examination Room 69
- Control consoles 69
- Emergency STOP button 70
- Table control module (TCM) 71
- (View from the rear) 74
- Orientation key 76
- Collimator versions 78
- Touchscreen control 80
- Keys on the FD 81
- Handswitch 82
- Footswitch 82
- Footswitch functions 84
- Cable with plug 85
- HT-S footswitch 86
- Monitor suspension system 88
- Data display 92
- Readings on the data display 93
- Stand/C-arm position 95
- Table position 96
- Programmed positions 97
- Patient coordinates 99
- Tube load 100
- Messages 101
- Voice control units 103
- Acoustic signals 105
- System Operation 107
- Chapter: DVD Video Recording 109
- Unit Movements 111
- Movement possibilities 111
- Basic positions of the units 116
- Initiating unit movements 120
- Collision protection 121
- Stopping movements 123
- Table movements 130
- C-arm movements (angulations) 135
- Stand/C-arm/system movements 141
- FD lift / Setting the SID 144
- Storing programmed positions 152
- Deleting programmed positions 155
- Manual stand movements 156
- (Multispace F only) 157
- Swinglab operation 159
- Positioning the monitors 161
- Setting the collimators 165
- Manual image rotation 173
- Grids for inserting at the FD 175
- Introduction 177
- Input areas 180
- Selecting a task card 181
- Selection fields with window 181
- IS joystick functions 184
- Using the joystick 184
- Operation via Voice Control 187
- Important information 187
- Setup for operation 188
- Voice commands 189
- Troubleshooting 194
- DVD Video Recording 195
- DVD recording 196
- Removing/inserting a DVD 197
- Formatting a DVD-RAM 197
- Finalizing a DVD-R 198
- DVD playback 199
- Examination 201
- Acquisition 203
- Registering a patient 203
- Attaching the ECG 210
- Setting the isocenter 211
- Selecting a user profile 225
- Flipping an image 236
- Monitoring the dose 239
- Fluoroscopy 243
- Switching roadmap on/off 244
- Storing a fluoroscopic scene 245
- Using the timer 245
- Storing reference images 250
- Performing roadmap 260
- Chapter: Image Postprocessing 266
- Chapter: DSA Postprocessing 267
- Chapter: Exam Protocol 267
- Table of Contents 268
- The task card PostProc 269
- Text information in images 270
- In full screen mode 271
- In the scene/image directory 274
- Starting postprocessing 275
- Loading a scene/image 276
- Changing patient data 277
- Changing the name of a series 279
- Scene directory 283
- Representative 284
- Changing the selection 286
- Selecting more than one scene 286
- Image overview of a scene 287
- Viewing scenes/images 288
- Starting Loop 289
- Setting the review rate 290
- Stopping Loop 291
- Single step 291
- Loop through all scenes 293
- Selecting scene/image display 294
- At the touchscreen control 295
- Setting an electronic shutter 296
- Inverting grayscale values 298
- Move image up 300
- Move image down 300
- Using the pointer 301
- Switching ECG display on/off 302
- Switching image text on/off 303
- Image Postprocessing 305
- Information about windowing 306
- Setting window values 308
- Applying a filter 311
- Changing the image display 313
- Orientation labels 320
- Entering free texts 323
- Using predefined texts 323
- Drawing circles 325
- Drawing lines or arrows 325
- Drawing polygons 326
- Calibration 327
- Starting calibration 329
- Performing manual calibration 330
- Drawing and measuring angles 332
- DSA Postprocessing 335
- DSA tools 336
- Setting a new mask 338
- Replacing the mask 340
- Starting pixelshift 346
- Automatic pixelshift 347
- Manual pixelshift 349
- Flexible pixelshift 350
- Undoing pixelshift 351
- Exam Protocol 357
- Displaying the Exam Protocol 357
- Entries in the Exam Protocol 358
- Entering comments 363
- Printing the Exam Protocol 363
- Closing the window 363
- Closing Postprocessing 365
- Automatic storage 365
- Documenting scenes/images 366
- Film preview 367
- Closing the patient 371
- Configuring patient close 372
- Procedure tracking with MPPS 373
- Exam Sets 377
- The Exam Set Editor 379
- Current exam set 380
- Viewing exam sets 382
- Editing exam sets 384
- Closing the Exam Set Editor 392
- Parameters for Exam Sets 393
- Acquisition parameters 394
- Radiation parameters 409
- Pulse rates 412
- General parameters 414
- Quantification 417
- Quantitative analysis methods 421
- Important notes 422
- The Quant task card 423
- Zooming/panning 428
- Deleting graphics 431
- Functions during an analysis 432
- Default settings 436
- Closing default settings 437
- Performing a calibration 441
- General functions 442
- Catheter calibration 446
- Distance calibration 449
- Sphere calibration 452
- Configuring the calibration 456
- Starting vascular analysis 459
- Selecting the analysis method 460
- Artery contour detection 463
- Automatic contour detection 464
- Manual contour correction 465
- Manual restriction 467
- Naming curves 468
- Diameter 470
- Diameter and area 471
- Density profile 472
- Background analysis 473
- Performing analysis 474
- Manual subsegment 479
- Results (report) 481
- Parameters displayed 482
- Configuring QCA/QVA 487
- Starting analysis 489
- Selecting images 493
- Biplane LVA 495
- Defining contours 497
- Defining a contour manually 499
- Drawing the wall contour 501
- Checking the contour 502
- Annotating a contour 503
- Calling up analysis again 504
- Regression formulae 508
- Analysis parameters 510
- Wall motion analysis 512
- Regional wall motion analysis 514
- Radial wall motion analysis 515
- Configuring LVA 516
- Bibliography on LVA 519
- Equipment with accessories 525
- Handling accessory parts 525
- (not in Artis dMP) 527
- Tabletops 527
- Mattresses 527
- Head support with cushion set 528
- Supports with accessory rails 529
- Head-end holder 530
- Articulated arm support 531
- Handgrips with supports 532
- Shoulder supports 534
- Arm support 535
- Arm holders 536
- Cable clips 537
- Infusion bottle holder 537
- Immobilizing straps 538
- Catheter tray, footside 539
- Instrument tray 539
- Stackable accessory rail 540
- Abdominal compression band 540
- Accessories for Artis (d)MP 545
- Holder with accessory rails 546
- Adapter with rails 548
- Footboard 550
- Handgrips 553
- Shoulder belt 554
- Tabletop extension 556
- Compression unit 557
- Stirrups 558
- Foot holder 560
- Miscellaneous Accessories 563
- CRAN CAUD 564
- Examiner lights 571
- Injector 572
- Sterile covers 573
- System messages 577
- Error handling 578
- Message lines 578
- Messages, causes, measures 582
- Restart necessary! 585
- Shutdown necessary! 586
- Memory full! 587
- Power failure! 590
- Restarting after a fault 593
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