Canon MLT (F) User Manual
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Canon MLT (F) User Manual

Canon MLT (F) User Manual

Cxdi image processing software
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CXDI Image Processing Software
MLT (F)
User's Manual
Before using the instrument, be sure to read this manual thoroughly.
Also, read the manuals of other instruments in this system.
Keep the manual where it is easily accessible.

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Summary of Contents for Canon MLT (F)

  • Page 1 CXDI Image Processing Software MLT (F) User’s Manual Before using the instrument, be sure to read this manual thoroughly. Also, read the manuals of other instruments in this system. Keep the manual where it is easily accessible.

  • Page 2: Please Note

    Please Note In no event will Canon be liable for direct or indirect consequential damage arising out of the use of this product. Canon will not be liable for loss of image data due to any reason. Please have this product installed by Canon representative or distributor.

  • Page 3: Table Of Contents

    1. Overview ...1 1.1 About MLT (F) ... 1 1.2 Available Functions of MLT (F) ... 2 2. Edit Exposure Mode Settings ...3 2.1 Procedures to Edit Exposure Mode ... 3 2.2 Setting DWT ENHANCE. Tab ... 7 2.3 Setting DWT DEP Tab ... 10 2.3.1 Setting DWT DEP for High-Density Field ...
  • Page 5 Notation Conventions Notation 1 In this manual, the name of button is enclosed with a pair of brackets [ ], and the buttons that are selected in succession are connected with > to indicate the order. Example: On the Exposure screen, touch the followings: [SYSTEM] >...

  • Page 7: Overview

    MLT (F) is supported by CXDI System Software Version 4.3 or later. The CXDI Image Processing Software MLT (F) (called “MLT (F)” in this manual) is designed to extend the image processing functions provided with the CXDI series of Canon dig- ital radiography system (called “CXDI” in this manual).

  • Page 8: Available Functions Of Mlt (F)

    1.Overview 1.2 Available Functions of MLT (F) This manual describes the operating procedures of the following three image processing func- tions that are available with MLT (F). For details and information on other image processing functions, please refer to Operation Manual and Setup Guide. DWT*1 Edge Enhancement ( The DWT ENHANCE.

  • Page 9: Edit Exposure Mode Settings

    2. Edit Exposure Mode Settings The examples used in this chapter are the screens of CXDI System Software version 6.3. 2.1 Procedures to Edit Exposure Mode Display the On the Exposure screen, touch the followings: [SYSTEM] > [EDIT EXPOSURE MODE]. Sensor Unit Category Tab Select the Sensor Unit...
  • Page 10 2.Edit Exposure Mode Settings Select the Exposure Mode Make sure that [EDIT PARA.] at the top-left is highlighted, and select the desired Expo- sure Mode. The EDIT PARA. screen appears. Display the next page Touch [NEXT PAGE]. EDIT PARA. Screen (first page) EDIT PARA.
  • Page 11 Select MLT (F) FREQUENCY If MLT (F) FREQUENCY is not currently selected (in this case, the DWT ENHANCE., DWT DEP, and DWT NOISE R. tabs are not displayed), touch the Frequency Pro- cessing Mode button to open the window, then touch [MLT (F) FREQUECY]. Frequency Processing Mode...
  • Page 12 2.Edit Exposure Mode Settings Save the parameters Touch [OK]. The window displaying the following message appears: Save the changed parameter. Then, touch [OK]. When Password is required If the password is specified, a different message is displayed in the window as follows: Administrator’s authority is needed.

  • Page 13: Setting Dwt Enhance. Tab

    2.2 Setting DWT ENHANCE. Tab Set the DWT Edge Enhancement effective Touch [EDGE ENHANCE.] to display the parameters. The appearance of the button switches over between the highlight (in white outline characters against a colored back- ground) and normal display each time you touch the button. The parameters are available when the button is highlighted.
  • Page 14 2.Edit Exposure Mode Settings Display the FREQUENCY BASE window Touch the FREQUENCY BASE button to open the window. The types of Frequency Bases are classified into two kinds, and are indicated with the buttons in different colors respectively as follows: Blue Bar Graph Green Bar Graph The bar graph in the each button shows the range of frequencies that enhancement...
  • Page 15 Display the DENSITY BASE window Touch the DENSITY BASE button to open the window. If granularity is too coarse on the Low-Density Field as the result of the enhancement, the quality can be improved by selecting the Density Base that applies weaker density enhancement to the area where the degradation of quality is obvious.

  • Page 16: Setting Dwt Dep Tab

    2.Edit Exposure Mode Settings 2.3 Setting DWT DEP Tab 2.3.1 Setting DWT DEP for High-Density Field Set the DWT DEP for the High-Density Field effective Touch [HIGH DENS.] to display the parameters. The appearance of the button switches over between the highlight (in white outline characters against a colored background) and normal display each time you touch the button.

  • Page 17: Setting Dwt Dep For Low-Density Field

    Set the DEP EFFECT parameter of the High-Density Field Touch the The value on the left is the setting saved previously, and the value on the right is the cur- rent setting. The value indicates the intensity of restoration in high frequency component that reflects the starting density and compression ratio of the High-Density Field.
  • Page 18 2.Edit Exposure Mode Settings Set the STARTING DENSITY parameter of the Low-Density Field Touch the If the parameters of the High-Density Field are effective, this value cannot be set lower than the value of STARTING DENSITY of the High-Density Field ( The value on the left is the setting saved previously, and the value on the right is the cur- rent setting.

  • Page 19: Setting Dwt Noise R. Tab

    2.4 Setting DWT NOISE R. Tab Set the DWT Noise Reduction effective Touch [NOISE REDUCTION] to display the parameters. The appearance of the button switches over between the highlight (in white outline characters against a colored back- ground) and normal display each time you touch the button. The parameters are available when the button is displayed in highlight.

  • Page 20: Qa Mode Settings

    3. QA Mode Settings The examples used in this chapter are the screens of CXDI System Software version 6.3. 3.1 Procedures to Change Parameters Image processing of the exposure images with CXDI is called QA (Quality Assurance) Process- ing, and can be performed by adjusting the parameters on the QA Mode screen to optimize the exposure image.
  • Page 21 Select MLT (F) FREQUENCY If MLT (F) FREQUENCY is not currently selected (in this case, the DWT ENHANCE., DWT DEP, and DWT NOISE R. tabs are not displayed), touch the Frequency Pro- cessing Mode button to open the window, then touch [MLT (F) FREQUECY]. Frequency Processing Mode Window When the Frequency Processing Mode button is not visible If the Frequency Processing Mode button is not displayed on the screen, touch the...
  • Page 22 3.QA Mode Settings Save the new parameters To save new parameters as the default values of the Exposure Mode (except opening from Study List), touch [SAVE PARAM]. The window displaying the following message appears: Are you sure you want to change the default generator parameters? Then, touch [YES].

  • Page 23: Changing Dwt Enhance. Tab

    3.2 Changing DWT ENHANCE. Tab Set the DWT Edge Enhancement effective Touch [DWT EDGE ENHANCE.] to display the parameters. The appearance of the but- ton switches over between the highlight (in white outline characters against a colored background) and normal display each time you touch the button. The parameters are available when the button is displayed in highlight.
  • Page 24 3.QA Mode Settings Display the MORE window Touch [MORE] to open the window. Display the FREQUENCY BASE window Touch the FREQUENCY BASE button to open the window. For details of the FREQUENCY BASE parameter, refer to the step 3 in 2.2 Setting DWT ENHANCE.
  • Page 25 Representation of the enhancement degree on a bar graph After the Frequency Base is set, a bar graph is displayed at the top-right of the screen to illustrate the comparisons with the frequency bands and degree of enhancement. The horizontal axis labeled with Lv represents the frequency band, indicating the lower frequency with a larger value.
  • Page 26 3.QA Mode Settings Select the DENSITY BASE parameter Touch the desired Density Base button. The parameter is selected for the Density Base, and the DENSITY BASE window is closed. Set the settings valid, and close the MORE window Touch [OK]. Representation of the enhancement degree on a line graph After the Density Base is set, a line graph is displayed at the top-right of the screen to illustrate the comparisons with density and the degree of enhancement.
  • Page 27 3.QA Mode Settings Switching the display of the graph Touch the graph area to switch over the Frequency Base Graph (bar graph) and Density Base graph (line graph). Actual processing shall not be performed unless the DWT Edge Enhancement is effective, although the graph is displayed on the screen.

  • Page 28: Changing Dwt Dep Tab

    3.QA Mode Settings 3.3 Changing DWT DEP Tab 3.3.1 Changing DWT DEP for High-Density Field Set the DWT DEP for the High-Density Field effective Touch [HIGH DENS.] to display the parameters. The appearance of the button switches over between the highlight (in white outline characters against a colored background) and normal display each time you touch the button.
  • Page 29 Display the MORE window Touch [MORE] to open the window. Set the HIGH WEIGHT parameter Touch the button, and set the value within the range between 0 to 20. The value on the left is the setting saved previously, and the value on the right is the cur- rent setting.

  • Page 30: Changing Dwt Dep For Low-Density Field

    3.QA Mode Settings 3.3.2 Changing DWT DEP for Low-Density Field Set the DWT DEP for the Low-Density Field effective Touch [LOW DENS.] to display the parameters. The appearance of the button switches over between the highlight (in white outline characters against a colored background) and normal display each time you touch the button.
  • Page 31 Display the MORE window Touch [MORE] to open the window. Set the LOW WEIGHT parameter Touch the button, and set the value within the range between 0 to 20. The value on the left is the setting saved previously, and the value on the right is the cur- rent setting.

  • Page 32: Changing Dwt Noise R. Tab

    3.QA Mode Settings 3.4 Changing DWT Noise R. Tab Set the DWT Noise Reduction effective Touch [NOISE REDUCTION] to display the parameters. The appearance of the button switches over between the highlight (in white outline characters against a colored back- ground) and normal display each time you touch the button.

  • Page 33: Qa Parameters

    4. QA Parameters When MLT(F) frequency processing is selected, the QA parameters (%IP_PARAM%) in Anno- tation are displayed in the format below. REX680 Q1 n stands for the numeric value, character or symbol displayed on Annotation. The parameter is displayed as follows: REXn If LUT is set to REX ADJUST for x-ray exposure, F-REX is displayed.
  • Page 34 4.QA Parameters Display Value Display Value Display Value Display Value Display Value 5 DWT Noise Reduction The parameters are displayed as follows: Nn (EFFECT), n (PROCESSING UPPER LIMIT) If the DWT Noise Reduction is not effective, nothing is displayed. 6 LUT Parameters The parameters are displayed as follows: Gn (CURVE SHAPE) n (BRIGHTNESS), n (CONTRAST) The Curve Shapes are represented by the following symbols respectively:...
  • Page 35 9 Suppress Grid Processing One of the following parameters is displayed: Z0 (No grid stripe is detected), Z1 (Grid stripes are suppressed), Z* (Processing is not determined yet) If the Grid Reduction Processing is not effective, nothing is displayed. 10 High-Density Clipping Processing (HIGH IN. CLIPPING) One of the following parameters is displayed: C0 (Clipping is not performed), C1 (Clipping is performed), C* (Processing is not determined yet)
  • Page 40 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo, Japan Telephone: (81)-3-3758-2111 CANON U.S.A., INC. CANON MEDICAL SYSTEMS 15955 Alton Parkway, Irvine, CA 92618-3616, U.S.A. Telephone: (1)-949-753-4160 CANON EUROPA N.V. Medical Products Division Bovenkerkerweg 59-61, 1185 XB Amstelveen, The Netherlands Telephone: (31)-20-545-8926 PUB. L-IE-4081F...

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