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1. Table of Contents 1 HOA IOa a a T 10 1 1 Description of the MOVE ccccccccccccccccccccccecececesseeeeececccncccceccceceeeeeeeeeseeeeeeeeeeeneaees 10 1 2 Set up the MOVES ooo ccc cccccccccccccceeseccncccccccccccccececesesseseececcnnauecececceueceueeeeseeeeeeeeeeennaees 12 Analysis that uses the Mover csssccesssseeseneeeceeneeseeesesseeneees 14 2 1 Add the Mover to a template 000 ccccccccccecsssssesseseeecseceeeeeeseeeseecececeeeeeeeseeeeeeeeeeees 14 Make a measurement with the MOVE ccccccccccccececscscsceneeescess 20 3 1 Measurement IN phantom 0 00 occ ccccccccssccccecccccccccccccccccecccecccceceeseeeeeeceseeeeeeeeeseeseeeeees 20 3 2 Measurement free in aif o oo ccccccccccccccccccccccsscccccccccccuceseseccececcuuuecsseeceusccuuueesseeeeneess 25 3 3 Low battery indication oeeeeeeccccccccscccccccccccecceecceceeseeceeeeecnnncceceecceeeeeeeeeeestteeeeceeenttnees 28 DIC GCITIC IONS sian S 30 Declaration of Conformity ccc eecceeeeeeeeeeeneeecenneeeenneeseenseesenneesees 32 ake 2 eee eek ee aa ee aR OS ee ee ee Ae eee et a a NE AP od Oe eE NORE NS MOODS 33 2013 11 26 2 0A Mover User s Manual Mover User s Manual 2013 11 26 2 0A Chapter 1 Introduction ETE Introduction 1 1 Introduction The Mover can be used for many different applications when you want to measure the dose profile by moving a point dose detector through the beam This manual will mainly f2. Mover For Dose Profile Measurements Mover User s Manual English Version 2 0A RTI article number 4700 000957 Mover User s Manual 2013 11 26 2 0A Mover The Mover can be used for many different applications when you want to measure the dose profile by moving a point dose detector through the beam YY RT NOTICE RTI Electronics AB reserves all rights to make changes in RTI Mover and the information in this document without notice RTI Electronics AB assumes no responsibility for any errors or consequential damages that may result from the use or misinterpretation of any information contained in this document Copyright 2013 by RTI Electronics AB All rights reserved Content of this document may not be reproduced for any other purpose than supporting the use of the product without prior permission from RTI Electronics AB Contact Information World Wide RTI Electronics AB Flojelbergsgatan 8 C SE 431 37 M LNDAL Sveden Phone Int 46 31 7463600 E mail Sales sales rti se Support support rti se Service service rti se Web site htto wwurti se Mover User s Manual Contact Information United States RTI Electronics Inc 33 Jacksonville Road Building 1 Towaco NJ 07082 USA Phone 800 222 7537 Toll free Int 1 973 439 0242 Fax Int 1 973 439 0248 E mail Sales sales rtielectronics com Support suppor rtielectronics com Service service rtielectronics com Web site htto
3. 108 11 0 Analysis Comment Piranha T Real time display template Design mode CTDI CTDoseProfiler Not Available We will now instead move the Mover and an axial scan 4 To add the Mover right click on the template background Modify Real time display template Hint If you haven t used the Mover with Ocean 2014 yet the menu looks like in the picture above No entry to add the Mover You must in this case connect the Mover Do that The Mover should be recognized as an USB device by the computer and the green light on the Mover should now be on Right click again the menu should now look like Modify Real tirne display template Use Mover Hint Click on Use Mover 5 A new tab appears on the right side of the screen 2013 11 26 2 0A Mover User s Manual ETE Analysis that uses the Mover E g fat J T cu C7 tI pr From this tab is the Mover controlled Each row in the template has its own settings The green color indicates that the Mover is connected and active If you now disconnects the Mover the icon turns grey You have now activated the Mover and in the future you don t need to connect it to build templates using it In the grid it is also shown that the Mover now is activated for the first measurement in this template O Measurements lt Library i CTDI CTDoseProfiler eo ee ays 100 0 Head 1 000 la a 120 0 Scan lerm mm 12 1 000 150 L 3 100
4. be used with any type of detector and application There is currently two analysis in Ocean 2014 CTDI helical scan in phantom and CT DI helical scan free in air that are designed to use the CT Dose Profiler and can use the Mover as an alternative These two analysis are based on measuring the Dose Profile and allowing the it to move with the table during a helical scan Now with the mover we can do the same thing but with a stationary table axial scan by moving the detector through the beam with the Mover The two analysis will automatically detect if the Mover is present or not and adjust the calculation of the different parameters according to the current situation When we use the Mover two parameters Pitch and Scan speed that we normally have columns for in the template are not applicable These two columns can be deleted from the template However as you see if you read the CT Dose Profiler User s Manual a pitch value is required for the calculations Ocean 2014 will therefor calculate a virtual pitch which will be used internally to calculate CTDIc and CT DIvol The virtual pitch is calculated as Mover speed rotation time Collimation For more details on calculations read the CT Dose Profiler User s Manual or look in Ocean 2014 help text Add the Mover to a template You can add the Mover to any template type except a checklist It can be used with all modilities and all type of det
5. detector can be moved in two directions Push or Pull Normally the detector is pushed through the beam when doing measurements The protection tube must be mounted if not not present the wire will not move Indicators There are two LED indicators on the Mover Red LED Indicates low battery Green LED Indicates that the Mover is on and has power The Mover doesn t have any ON OFF switch It is automatically powered on off when connected to the computer via the USB cable Connectors USB connector for the cable that connects to the computer The Mover powers on automatically when you connect it to the USB port Note there is no built in protection in software or hardware It is your responsibility to make sure that the probe can move freely within the distance and direction you specify in Ocean 2014 2013 11 26 2 0A Mover User s Manual BETZ Introduction 1 2 Setup the Mover There are two basic setup when you use the Mover measurement free in air and in a phantom Free in air The plastic tube is used for free in air measurements In the phantom For measurements in the phantom the plastic tube is removed and the CT Dose Profiler probe moves inside the phantom nF Mover User s Manual 2013 11 26 2 0A Chapter 2 Analysis that uses the Mover 2 2 1 414 Analysis that uses the Mover Analysis that uses the Mover The Mover is an independent device that can
6. s Distance mm You will see how long time the scan takes Change your Measuring time so that it covers this time with some margin see this part in Analysis that uses the Mover You can add a delay of for example 0 5 s so that it will not start to move directly when you Start later 18 Choose the correct Scan Field of View SFOV on the CT console The SFOV should be chosen according to the type of phantom that is used Select the phantom type in Ocean 2014 Here is an example of how a console may appear on a GE CT scanner when SFOV is selected Ea Ca Se be a E a 2 ee el e 1 30 000 T200 000 41 9 000 30 0 Select the desired SFOY Body Select SFOV according to what kind of phantom you use Ped Head 16 cm Phantom 32 cm Phantom Large Body You are now ready to perform the measurement Timed mode will be used and you must start the measurement manually before you start the CT scan 19 Begin the CT scan from the console and click the Start button in Ocean 2014 2013 11 26 2 0A Mover User s Manual 24 Make a measurement with the Mover Untitled Ocear Data link Appearance Reporting Central database Help Clear row G Get m i Clear all i Expe Start z Capture Pause Positon Meter Detector Favorites si check info Lib Close Measur 20 You will see how the measurement is progressing on Ocean 2014 s status bar and the Mover will move
7. section Theory of CTDI and k factor describes the theory behind this method 3 Remove the PMMA extension in the front of the CT Dose Profiler and put the detector in to the center hole of the CTDI phantom Move it all way through and attach the Movers wire to the front of the CT Dose Profiler 4 If you want the push the CT Dose Profiler through the beam you should have the detector outside the phantom close to the Mover If you want to pull the CT Dose Profiler through the beam you should have the detector outside the phantom on the other side 5 Make sure that the two horizontal CT lasers are visible on the probe approximately in the center of it Also verify that the vertical laser is approximately in the middle of the phantom 6 Start Ocean 2014 7 Go to the Library tab and open the template you made in the previous chapter 8 The first thing you should do is to select CT scanner in Ocean 2014 Go to the Equipment tab 9 Specify the CT scanner manufacturer Mover User s Manual 2013 11 26 2 0A Make a measurement with the Mover 24 Equipment Eee 4 m Generator a Manufacturer Toshiba E Generator name m Model x Serial a Waveform type HF DC 3 Note 1 a m a Note 2 Note 3 Note 4 Generator ID Indude in reports male 10 Now select the CT scanner model Click on the binoculars to see the CT scanner list for the specified manufacturer If you don t find your CT scanner in
8. wwurtielectronics com 2013 11 26 2 0A Saftey precuations and intended use of the RTI Mover Together with the Ocean Software from RTI Electronics AB and a radiation probe it is to be used for quality control service and maintanance of X ray systems With the X ray system in stand by condition without patients present the probe is intended to be used to provide the operator with information on radiation beam parameters that might influence further steps in an examination but not an ongoing exposure for assessing the performance of the X ray system for evaluation of of examination techniques and procedures for service and maintanance measurements for quality control measurements for educational purposes authority supervision etc The product is intended to be used by hospital physicists X ray engineers manufacturer s service teems and other professionals with similar tasks and competencies The operator need s basic knowledge about the software Ocean before starting to use the Mover This can be achieved by studying the relevant documentation The product is NOT intended to be used for direct control of any diagnostic X ray system performance during irradiation of a patient so that patients or other unquilified persons can change settings of operating parameters during and immediately before and after measurements 2013 11 26 2 0A Mover User s Manual Mover User s Manual 2013 11 26 2 0A Contents a
9. 0 Body 12 1 000 150 6 You can now enable or disable the Mover for each row individually If you want to change status select the row and pull out the Mover tab Assume that we in this case want to use the Mover for all rows Select row 2 to 4 and pull out the Mover tab D Measurements gt Library 1 CTDI CTDoseProfiler View Select type Collimation Scan length Tube rotation time Scan speed Measuring ime Exposure Mover mm s ian VT mm s mGy 100 0 Head 2 1 000 150 1 00 12 00 ip Pio read e fam m om f aem a 3 100 0 Body 12 1000 150 10 100 w eR imi a 20 0 soy 2 roo 150 o oj o ___ 83 3 mm s Estimated time 1 Check Enabled on the tab All four rows now uses the Mover mE Measurements Lib View Select Setkv T 1 100 0 LE PBE A NI 3 100 0 Lia 4 120 0 7 Since you now intend to use an axial scan to do your measurement two columns in the template are no longer relevant Remove Pitch and Scan speed see previous section The template should now look like this Mover User s Manual 2013 11 26 2 0A Analysis that uses the Mover a7 7 Measurements lt Library E CTDI CTDoseProfiler View Select imi Set kV j S Tube T time Measuring tme Exposure 5 mGy a 2 120 0 Head i 150 1 00 10 ian VI 3 100 0 Body 12 150 1 00 i imi T 4 120 70 Bod Y 17 150 1 00 10 8 It can now be time to save it Use
10. Save as and a new name to avoid that you overwrite the template you started from 9 We must now make some more adjustments for the Mover There are two parameters Speed and Distance to set for the Mover that is used by the analysis to calculate CTDI and other parameters Select the row you want to set values for and pull out the Mover tab Mover y T Enabled Initial direction Push W You should always use as high speed as possible in this case leave speed at 83 3 mm s Since this is a template for measurement in the phantom set the distance to 150 mm this is the length of the phantom In this case make sure that all rows has the same values 10 The estimated time for the Mover is indicated on the Mover tab in this case 1 7 s Mover w T t Enabled Speed and distance s 150 mm Estimated time 1 75 Initial direction Push a It is suitable to always use Measuring time that is not shorter but close to the estimated time IN this case use a Measuring time of 2 seconds Adjust the template accordingly 7 Measurements 7 Library 1 CTDI CTDoseProfiler Mover Exposure 2013 11 26 2 0A Mover User s Manual 418 Analysis that uses the Mover 11 The template we have modified is using Timed mode for the measurement this is the recommended mode for measurements with the RTI CT Dose Profiler In this case leave all other Mover settings as they are Start Auto Return Auto 12 Save the template Y
11. ean 2014 is for measurements free in air This template calculates CTDI free in air and Geometric Efficiency You perform this measurement the same way as described in the previous section but in this case is no phantom used You have to use the tube as described in 1 2 Set up the Mover For wide beams over 40 mm it is recommended only to measure free in air not in a phantom 2013 11 26 2 0A Mover User s Manual 26 Make a measurement with the Mover 1 Go to the Library tab and open the Examples RTI gt Application gt CT folder If you can t find the examples please read the section Load CT Dose Profiler templates 2 Select the template Geometric Efficiency CT DoseProfiler by double clicking on the name 1 No measurement loaded if Measurements Library Real time display templates Examples RTI Applications CT ED Session templates gt i Test templates eae TEE i a D Real time display templates 3 gt i Inbox seProfile 2012 03 07 Template a k Examples RTI Geometric ae CTDoseProfiler 2012 03 07 Template Applications 3 Load the template Do the same thing with this template as described in Analysis that uses Mover i e add the Mover and remove pitch and scan speed rm ae on 6 mGy 10 0 2 100 T 40 10 0 150 1 00 10 N 3 120 0 40 10 0 150 1 00 10 4 Inthe grid you must enter the parameters below before you can perform your first measureme
12. eclaration of Conformity 32 Declaration of Conformity 5 Declaration of Conformity Enter topic text here Mover User s Manual 2013 11 26 2 0A Index ee 33 Index _A Analysis 14 Battery 28 connector 10 CTDI100 10 CTDlvol 10 CTDiw 10 D Direction 14 DLP 10 Dose profile 14 i e Free in air 12 14 FWHM 10 Geometric Efficiency 10 Indicators 10 LED 10 Mover parts 10 setup 10 2013 11 26 2 0A Mover User s Manual
13. ectors This section will describe the general steps that shows how to add the mover to a template with the CT Dose profiler probe and an CT DI helical scan in phantom analysis and how to control it You can design Ocean 2014 templates with the Mover without having it connected in the same way as you can build templates and add detectors without having the meter connected We will modify an existing real time display template add the Mover and save it as a new template If you don t intend to directly do a measurement you don t need the meter at this point If this is the first time you use the Mover you must have it and connect it to activate it in Ocean 2014 After this is done you can build templates without connecting it 1 Go to the Library and the Application gt CT folder Real time display templates Examples RTI Applications CT i Session templates E Test templates Name Last modified Type a D Real time display templates Lue oe O User def k factors Folder i b Inbox 7 Ee CTDI pe 2012 09 24 Template CTIDI CTDoseProfiler 2012 10 03 Template Geometric Efficiency CTDoseProfiler 2012 10 03 Template vee CTDI CTDoseProfiler ia E Geometric Efficdency CTDoseProfiler E9 Fluoroscopy 0 Mammography 2 Right click on the CTDP CT DoseProfiler template and select Open to open it in Design mode 3 This template is designed for the CT Dose Profiler and includes the ana
14. elay shall ensure that the detector is now moved back in the beam until the X ray is turned off Mover User s Manual 2013 11 26 2 0A Chapter 3 Make a measurement with the Mover 20 Make a measurement with the Mover 3 3 1 Make a measurement with the Mover Measurement in phantom Note there is no built in protection in software or hardware It is your responsibility to make sure that the probe can move freely within the distance and direction you specify in Ocean 2014 We will use the template that we modified in the previous section see Analysis that use the Mover As mentioned before it is assumed that you are familiar with Ocean 2014 If you need general information about Ocean 2014 please consult its User s Manual To use the mover in a CTDI phantom we recommend that you use a collimation of 40 mm or lower If you want to measure on wider collimations we recommend that you measure free in air see information about that below Measure free in air Assume that you want to measure CTDI 100 using a head phantom First setup the meter phantom and probe 1 Connect the CTDP probe to the Piranha Barracuda via the extension cable If you are using USB cable between the meter and PC connect it now Put the Piranha Barracuda behind the CT 2 Place the CT head phantom on the head support and place the Mover on the table CT Dose Profiler ee Note Only one exposure with the probe in the center hole is required The
15. eters are read and set correctly otherwise the measurement will be incorrect 13 First perform a topogram scout image over the whole CT Dose Profiler when it is positioned inside the phantom Ocean 2014 is not used at this stage and the meter will not record any data You do not have to be concerned with any settings or measured data since the reason for this scan is to find out where to set the cursors of the CT machine for the axial scan 14 The CT console will show the scanned image similar to the one below ee EValuat lon A 3U S5 r 2 gt OMATOM PLUS 4 VCIOC i ad H 360 20 Mark the center of the phantom where you want to do your axial scan If you have measured with a pencil ion chamber before it is the same procedure 15 First select axial scan on the CT scanner We recommend that you choose a long tube rotation time or that you can make a number of rotations at the same position 16 You must enter the following parameters before you can perform your first measurement kV Tube rotation time s Collimation mm Phantom type head or body Mover User s Manual 2013 11 26 2 0A Make a measurement with the Mover 23 To be able to acquire DLP you also need to specify Scan length mm You now have to find the corresponding parameters on the CT console Parameters may have different names on units from different manufacturers 17 Open the Mover folder to the right Select the Speed mm
16. free in air and the Beam width FWHM Full Width Half Maximum 2013 11 26 2 0A Mover User s Manual 28 Make a measurement with the Mover 3 3 Low battery indication If the battery voltage in the Mover is too low two different indications are use the red LED on the Mover and a warning in Ocean 2014 The warning in Ocean 2014 looks like this Warning The Mover s batteries are low Recharge as soon as possible Click OK to close the warning You can continue and finish your measurement The warning in Ocean 2014 will not occur again until you restart Ocean 2014 The red LED will continue to indicate low battery in the beginning only when it runs Make sure to recharge as soon as possible Measurements will be incorrect if you continue to use it too long and it doesn t move the detector with the correct speed Mover User s Manual 2013 11 26 2 0A Chapter 4 Specifications 30 Specifications 4 Specifications Supported software Ocean version 2013 01 14 85 and later or Ocean 2014 Dimensions base unit L x W x H 86 x 60 x 129 mm Weight 1 3 kg Operating temparature and relative 15 35 humidity at lt 80 realtive humidity Storage temperature 10 C to 50 C Force 5N Power source Battery six 1 5 V batteries type LR6 Size AA alkaline or type HR6 chargeable NiMH Power on off Automatic Speed 14 9 mm s to 83 3 mm s PC communication USB Mover User s Manual 2013 11 26 2 0A Chapter 5 D
17. lysis type CTDI helical scan in phantom that calculates all relevant parameters by using a helical scan to move the detector through the CT beam to acquire the dose profile Mover User s Manual 2013 11 26 2 0A Analysis that uses the Mover 415 Ed CTDI CTDoseProfiler Ocean 2014 Professional u L a K WA Measure Design Data link Appearance Reporting Central database Help of E Clear row E3 ste V Get waveforms 3 EX Clear all Connect Reset Start Capture Pause Position Meter Exposure we Detector New Quick Favorites History Trend Update X chec nfo assistant E5 Close Check inspection dates Meter Edit Measure Compare Scheduling 8 Keyboard T Measurements amp Library CTDI CTDoseProfiler Setkv Collimation Scan length Tube rotation time Scan speed Measuring time Exposure IED Vi Pi cd forse w T gonna os mm mm s mm s s mGy L gt EE TT In 2 120 0 Head 12 1 000 150 1 00 12 00 10 a In 3 100 0 Body 12 1 000 150 1 00 12 00 10 a n 4 120 0 Body 12 1 000 150 1 00 12 00 10 E ig B Waveform Waveform data Analysis 20 Show hide Cursor1 Cursor2 Diff CTDI 1 spiral scan in phantom lt 124 Exposure rate S 15 z Time Set kV 100 0 kV bal CTDI 100 c mGy A CTDI w mGy 4 Between cursors CTDivol mGy os Exposure DLP mGycm os za Exposure rate Tl a s0 s2 s4 s6 se Ba ds 10 2 104 106
18. nt kV Tube rotation time s Collimation mm 5 Under the Mover folder you must add Speed mm s Distance mm 6 Now perform the measurement the same way as the CTDI measurement described in the previous section but now you have the CT Dose Profiler scanned free in air in the tube connected to the Mover Do an axial scan and move the CT Dose Profiler detector through the beam 7 As soon the measurement is completed Ocean 2014 will display the dose profile and calculated data The dose profile is shown in the waveform window and the total measured dose is shown in the Exposure column in the grid s 5 E 15 30 ages ay 250 3 00 5 sE ERI 16 120 40 1 000 3 0 250 3 00 5 6 146 faa TV 17 120 20 1 000 3 0 250 3 00 5 3 180 Make the necessary adjustments and redo the measurement if you don t get a value in the Exposure column The waveform graph shows the dose profile Mover User s Manual 2013 11 26 2 0A Make a measurement with the Mover 27 k c D Exposure rate mGa There are two cursors that can be moved Corresponding cursor values are shown in the waveform data window 8 The calculated values are shown in the Analysis window CTDI spiral scan free in air Result Pass Set kV Geometric efficiency Beam width FWHM CTDI100 412 k Exposire fat dnGyis 9 The first measurement Geometric Efficiency is now done Other parameters measured with this template are the CTDI 100
19. ocus on the use of the Mover and the CT Dose Profiler probe to evaluate a CT using It will show how to collect the dose profile and how Ocean 2014 calculates CTDI 00 CTDIw CTDI DLP Geometric Efficiency and FWHM for an axial scan vol When you read this manual it is assumed that you are already familiar with Ocean 2014 and the CT Dose Profiler The Mover is supported in Ocean 2014 as an independent device and can be used in any kind of application and used with any detector To use the Mover you must have Ocean version 2013 01 14 85 and or Ocean 2014 later and a free USB port Description of the Mover The Mover includes the following parts Mover Stand and quick mount Base plate Plastic tube for free in air measurements Protection tube the longer of the two tubes Wire that connects to the CT Dose Profiler probe USB cable Manual The standard configuration for free in air measurement with the mover is shown in the picture below Mover User s Manual 2013 11 26 2 0A Introduction at Button to release the wire Wire Plastic tube for free in air measurements Protection Knob to manually tube move the wire CT Dose Profiler probe Indicators of direction push and pull Quick mount LED indicators and with a ball head USB connector Base plate If you want to measure in a CT phantom remove the plastic tub and place the detector with the wire directly in the phantom The used
20. ou have now added the Mover to the new template and it is now ready for use Depending on the actual situation when you use it you may have to do adjustments on the fly for example adjust Collimation and Tube rotation time There are some more settings on the Mover tab that can be used to control how the Mover behaves Mover we T Enabled Speed and distance amp 3 3mm s 150 mm Estimated time 1 7 s Initial direction Fush i Start Auto start after 5 Li C Manual Start now Return jg Auto when measuring time is complete Auto after delay 5 5 Initial direction The controls which direction the Mover starts to move the detector Push and Pull is indicated on the Mover The normal direction is to push the detector through the beam Start You can start the Mover automatically with timed mode or manually If you use Auto with timed mode the Mover starts when you start the measurement that is when you click on the Start button on the ribbon bar If the application require you to delay the Mover some after starting the measurement you have this option and can specify a delay If you use Normal mode or Free run you must use Manual start You must in this case click on the Start button on the Mover tab start it Return You can have the Mover to automatic return the detector to its start position or do it manually If you use automatic return a delay is specified default is 5 seconds This d
21. the CT Dose Profiler during this time Li L LEI LL Milos The dose profile will now be measured Be sure that the entire CT scan time is covered by the measuring time you have chosen If not you should increase the number of rotations or the rotation time 21 Assoon the measurement is completed Ocean 2014 will display the dose profile and calculated data The dose profile is shown in the waveform window and the total measured dose is shown in the Exposure column in the grid Se ee a ge Som in me Y View Select pA oe 0 Head A center 16 0 1 00 40 21 2 130 0 Head A center 12 10 0 222 1 00 16 3 120 0 Head A center 12 10 0 222 1 00 16 ial 4 120 0 Body A center 40 10 0 150 1 00 10 Make the necessary adjustments and redo the measurement if you don t get a value in the Exposure column The waveform graph shows the dose profile Waveform F Time 5 Exposure rate moy s NS peer S S TE ALL TT ET FH Mover User s Manual 2013 11 26 2 0A Make a measurement with the Mover 25 22 The calculated values are shown in the Analysis window Analysis 120 0 kV 23 75 mGy 25 84 mGy 34 63 mGy 23 The first CTDI measurement is now done You can now measure the remaining CTDI values using the above method 3 2 Measurement free in air The second standard template that comes with Oc
22. the list select one of the same brand and similar model You can also read more in the section Unlisted CT scanners Asteion Multi CXB 400C tube 80 100 120 135 kv Asteion Multi older tube 80 100 120 135 kv Xpress GX Pre 98 120 kv Xpress HS 120 kV l Xpress H51 120 kv speed IT 120 kV i Mvision EX 120 kV 11 Select CT scanner model and click OK Note also that for each model the possible kV settings are also listed If you can t find the CT scanner you are looking for read the section Unlisted CT scanners 2013 11 26 2 0A Mover User s Manual 22 Make a measurement with the Mover For the purpose of following this example select one that is similar to the one you have When you select the CT scanner model the required data will be pulled into your measurement from a database including energy correction factors and the k factor You can read more about the k factor in the section Theory of CTDI and k factor A more complete list of k factors is available in the Appendix section of this manual 12 If you know the total filtration go to the Tube tab and enter it If you don t know use the default value 7 mm Now it is time to prepare the CT settings You will be required to perform the following perform a topogram a scout image know how to set the cursors to define an axial scan over the center of the phantom and be able to perform the scan It is very important that these CT param
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