GENERATOR SETUP V1 R2 - o d e l x r a y . e uUS3)/ENG/1044 - NAVIGATOR...NAVIGATOR STM for...

GENERATOR SETUP NAVIGATOR STM for generators

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NAVIGATOR STM INSTALL

Locate in

YOURDEVICE\_ODELlib\_Driver\Ftdi directory

Right click on and run as administrator:

This will open the installer:

Press key

This will open next window:


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Press NEXT key

Mark ACCEPT and keep on installation pressing NEXT key


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Than wait until FTDI drivers are installed

Press END key.

Locate in

YOURDEVICE\_ODELlib\_Driver\Velleman\DLL directory.

Run .

Complete the installation of correct DLL in your computeras below:


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Locate the setup file in YOURDEVICE\_ODELlib\NavGEN\cvidistkit.NavGEN_US3\Volume

Run file

Leave target install in “C:\_ODELlib\NavGEN\” and press


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Press again on next screen and wait 100% of complete process

Until following screen appears:


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Here press key to complete the installation.

On your desktop will appear following icon:


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NAVIGATOR STM START Connect USB than

After the installation of Navigator for STM press to start.

If generator is connected and switched ON, the program will automatically download configuration files and

start this window:

This window represent the summary of the generator status:

Pulsating shows connection status

Displays in text the generator status.

Pressing this key it is possible to access the emission summary window:


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Here it is possible to inspect the activity and exclude two controls when servicing the generator.

when green no faults are in act, when red shows the error code.

Pressing this control, the error summary window is shown:


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Right clicking over it it is possible to access the error masking window:

This section shows the working station and tube status, including filament lighting of the selected tube

NOTE: GENESI Monoblock has only one workingstation and tube

Displays the temperature of the thermal sensor on the inverter controller.

Pressing it it is possible to access the temperature logger window

Then there is the status TAB:


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tab

displays the actual radiography mode status

tab

displays the actual continuos fluoroscopy status, if enabled in configuration

tab

displays the actual Pulsed fluoroscopy status, if enabled in configuration

tab

Accesses the generator’s configuration window.

In case generator is OFF this message dialog will appear:

Here it is possible to switch on generator and press to locate it

ACCESSORY

From pull down menu it is possible to access special features.


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One useful tool is Tiny Console with which it is possible to set generator data without the need to use the real

control console:

It opens this window , here it is possible to press key to force

generator from IDLE to STAND-BY status.

Than it is possible to set the most used parameters in the permitted techniques:


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RADIOGRAPHY FLUOROSCOPY HCF

To close this panel press


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RADIOGRAPHY STATUS WINDOW

This is a summary of Radiography mode status currently set in generator:

Based on CONFIGURATION (will be described later in this document) this part is a summary of techniquest

available on current workin station .

this section displays the actual data set on control console

Section ADJUST is used to adjust real emission by calibration coefficient on selected focus:


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When key is pressed, this window is shown:

Here, is steps, it is possible to move a calibration coefficient from 1000 (Factory Sample Calibration) to the

correct emission value (higher the value, higher the emission..)

To change values in interval 25mA..32mA..40mA..50mA this section must be changed:

The modification is applied on CURRENT SELECTED FOCUS: .

This section displays the unlatched warnings, i.e. the actual parameters set in control console produces a

situation in which it is not possible to keep on emitting because of:

radiography kV exceed the maximum configured in this tube

radiography mA exceed the maximum configured in this tube

radiography time exceed the maximum configured in this tube


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radiography mAs exceed the maximum configured in this tube

radiography power exceed the maximum configured in this tube

radiography power will exceed anode thermal capacity configured in this tube

radiography parameters will exceed max filament lighting in tube

set kV is lower than minimum kV allowed

set mA is lower than minimum mA allowed

set time is lower than minimum time allowed

set mAs is lower than minimum mAs allowed

radiography parameters exceed maximum power allowed on current focus

unable to compute7feedback the actual filament lighting

light computation results a lighting lower than the minimum radiography lighting

In all this case, a modification in radiography parameter can restore the correct situation.

LAST RADIOGRAPIC EMISSION SUMMARY

In this portion of the panel will be shown the data collected during last radiographic emission run.

This is usefull while adjusting the tube calibration.


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At the end of emission this is an example of radiographic summary.


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FLUOROSCOPY STATUS WINDOW

Here it is possible to inspect fluoroscopy data and calibrate fluoroscopy

Pressing this key it is possible to access following panel:

In which it is represented the Fluroscopy Calibration summary.


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Pressing the panel turns to

Here it is possible to select the focus or , then select Maximum kV during calibration and

maximum mA.

Than press .

Press fluoro footswitch and wait until the process is finish.

When process is finished turns un-ghosted.

You can choose if Confirm calibration made or discard the calibration process.

It is suggested to calibrate fluoroscopy on both Small and large filaments when available.

It is possible to abort the calibration process opening the fluoroscopy switch an pressing

.


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CONFIG TAB

PRELIMINARY NOTES ABOUT THIS PART OF DOCUMENT The intent of this document is to explains the US3/GENESI setup using the service program, giving information

also on the entry point using the serial communication protocol to inspect and data change on the way to use

the features.

WORKING STATION SETUP


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ICON SELECTOR

The ICON choice is an index for the CANBus control console which explicitely requires it in a bigger generator

environment such as PROGRAM H.F. US3 device.

In monoblock environment, working station is only one and identified as WS1.

In US3 environment, workinstation are 4

In order to select an appropriate image to be displayed on CANBus control console select it pressing the icon:

TUBE SETTING

GENESI monoblock has only one tube features, so must always

be “1”, US3 can be single tube, or dual tubes; WS must be associate to the correct tube

this parameter is used to keep the tube into rotation at the end

of an exposure, or a run in fluoroscopy, for n seconds.

It is used in fluoroscopic systems to avoid consequent acceleration of the anode by continuously switching

Fluoro to Radio to Fluoro.

This prevents heat production in tube stator

A good starting value is 10 seconds.

those features are used in US3 when equipped with High Speed

Starter in order to force High Speed when sequences are used.


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Used in previous generator to automatically print the emission label, no more used, in

stable release revision of the service software will be removed.

RADIO SECTION

In GENESI monoblock, emission commands are present only as terminal input, so

will be hidden in stable release. It must be “Ext only”

emission timing are here displayed for

development reason, will be removed in stable release: the meaning is: MINIMUM TIME THE EMISSION IN

COURSE SIGNAL MUST BE ACTIVE in order to inform external slow device that emission is ON

used in US3 to stop hardware the emission by external devices. Not Used in GENESI

used in US3 to delay emission until Injector Ready Input is present, not used in GENESI

Developer variable to make CANBus console beep after BETOX timeout to

avoud beeping during fast sequences.

600ms will grant that CANBus control console will beep only from 1 frame per second or lower frequency

sequences.

Serial link do not use this parameter.

it is used in US3 to describe for every workingstation which output to be used to

advise external device that generator is ready to emit, and which imput to wait from external device before

emitting.


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Pressing this key: is open

GENESI has a simple interface, Potter reply input is always the II STEP (emission) for both pulsed fluoro and

radio, so this configuration is not used in GENESI.

US3 can build a potter chain in term of BUCKY CALLS and BUCKY Replies which drives relays or optocouplers on

Terminal Boards and senses the reply through optpcouplers.

TWO POINT TECHNIQUE PARAMETRIZATION

It is possible to select on control console (CANBus) or over serial link the two point radio technique:

!RET2

To return back to 3 pints technique use !RET3

In this technique, for a choosen mAs value (!RHXn) computer takes current kV value and select mA according

to the table selected belowe.

Than it computes emission time.

And reply on Serial Link !RHXn with current mA value, or ERROR in case mAs value sent through serial link is

wrong (!SER213)

This is used to best fit the kV/mAs technique according to filament power.

It uses curves to be select, or a custom curve to be draw.

Right clicking over the index, a graphic representation of the mA selected while kV are selected is shown:


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Higher the index, higher the mA the computer will choose to compute selected mAs.

TOMOGRAPHY SETUP

GENESI do not have a prebuild tomography technique, this section is not used.

In US3 generator, here you can set the way to inform generator that Tomography is select

(SLOW / FAST bit plus 1 Tomo Angle select OR Bit encoding time)

Than time setup according to the timing combined on inputs:


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for Slow/Fast

of the 16 combination in 4 angles decoder in Bit Encoding Time combination.

Than the sequence of external input to wait before starting emitting, in .

EXPOSET

In US3 it is possible to automate the EXPOSET mode while sequencing in ANGIOGRAPHIC MODE (radiography

sequence mode controlled in time by Automatic Exposure device).

Once enabled it, it is possible to select the frame delay between time freeze.

DSA

In US3 generator it is possible to enable DSA dose multiplier using an external input and the multiply factor.


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AUTOMATIC EXPOSURE SETUP

When generator is connected to an AEC camera through the AEC amplifier it is possible to ENABLE it and set

the AEC related parameters.

It is possible, if configured, to access the AEC mode through command !RET1

In case AEC is enabled reply will be !RET1 otherwise will not change the current technique and reply can be

!RET2 or !RET3


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Select here the item MAIN DATA:

mark the arrowed checkmark


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Now in working station parameters, the AEC TAB is

shown:

first of all select which kind of AEC technique will be used between

1 Point technique: Operator selects kV, from a table similar to the two points technique it is select the mA for

next radiography and AEC will interrupt time when integraded dose riches the calibrated value according to

next criteria.

2points technique: Operator selects kV and mA and AEC modulate time. In this technique it is possible to set

mA parameter according to patient / organ under exam.

This information is static, so there is no possibility to change through CANBus or Serial link.


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In case AEC is set to 1 point technique the request to change mA (!RHCn)will be ignored.

Detectors number depends on generator’s type: on GENESI only 1.

Detector type will be removed from service software (we’re developing a common interface).

Here is possible to set a minimum signal coming from AEC camera in order to see if radiation is arriving on

camera while exposing (generally 20mV)

Than it is possible to set the saturation voltage (0 mins control excluded, good value are from 4500 from 4,5

volt up).

This is important in US3 to avoid selecting a camera while tube is oriented on a different camera

In a GENESI environment where WS is only #1 it is possible to set all to zero to exclude controls.

Here it is described the AEC camera.

In GENESI generator permitted filed are as follow: .

Here it is possible to describe camera as three field or only central field, removing the lateral checks:

.

When three field camera is connect, it is possible to switch ON or OFF the dominant sending following serial

command:

!RAF7 to enable all the three fields

!RAF2 to enable only the central field

Or the other combination.

1 POINT TECHNIQUE


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As already seen for kV/mAs technique, here it is possible to select a curve to describe the system which value

of mA to be select when kV is set.

It is not used if AEC 2pt is select.

GAIN ADJUST

Here it is possible to adjust the ZERO DENSITY ADJUST point:

The setup is divided into 4 columns because 4 FILM/SCREEN combination are possible:

!RAS0 set the usage of the parameters in the left colums

!RASn set the usage of the parameters in nth column starting from left

There is a FILM vs ENERGY adjust (every 20kV) and it is already setup for GREEN/BLUE screen.

( )

This should NOT be changed on field unless different screen are used.

The parameter to change when optical density is adjusting on the field is , doubling this

value, exposure time will be doubled.

Fixed this point during system setup, it is possible to dynamically, and temporary, change this parameter from

50% to 200% on operator’s control console.

!RAD0 set Density to GAIN/2 (50% of stored value) !RAD3 set Density to GAIN !RAD6 set Density to GAIN*2 (200% of stored value) than, intermediate values are on R10’ scale.

is used only in R&D and will be hidden in Stable Revision.


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CONTINUOS FLUOROSCOPY

Continuous Fluoroscopy in US3 can be either selected by Serial Message or “IPF” signal. In GENESI the input “SEQUENCE” is OPEN when Continuous Fluoroscopy is to be selected.

this voice, in STABLE release, will be changed in ENABLE pr DISABLE, and selection will be made only through External Digital Input.


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CHAINED PARAMETERS

It is possible to describe the way Fluoroscopy will chain kV and mA. In R&D system a lot of curves are possible:

but in STABLE production will be reduced to following:

notice: Also values labeling will change This curve is the most flexible on the ones tested and acts in this way:

Point A: MIN DOSE POINT: defined as 40kV @ min mA Point B: STARTING POINT: defined as [min kV]@[def mA] Point C: MAX DOSE POINT: defined as [def kV] @ [max mA] Point D: MAX ENERGY POINT: defined as [max kV] @ [WATT(Point C)].


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DOSE REGULATOR

Control Type:

Selection is done through following items:

means that Dose is changed changing Fluoro kV through Control Console.

parameters are changed using:

in Program US3 there is the possibility to drive kV in digital input mode

present on both US3 and GENESI,

In US3 class the input signal can be both ERROR signal (Zero Balance) or REFERENCE SIGNAL (Actual Dose).

In this case, the regulator controller parameter in next paragraph have to be set.

In GENESI monoblock, reference signal is only a POSITIVE DOSE REFERENCE.

Switching from AUTOMATIC REGULATION to MANUAL REGULATION

!FAM0: Remove ABS control (Manual Mode) in this condition it is possible to adjust dose sending, also during

emission, following command:

!FHV+ to increase dose

!FHV- to decrease dose

!FAM1: If automatic drive is select, this command will introduce the reference signal drive mode.

When kV are regulated in automatic mode ?FHV and ?FHC packet are to be assert by control console every

second to check the set point changed by automatic regulator.

Note:

!FHV+ to increase dose and !FHV- to decrease dose DURING STAN-BY (!GST2) are usable also in case

fluoroscopy is in automatic mode (!FAM1)

CONTROLLER PARAMETERS

this is the dose sampling period.


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It depends on fluoroscopic chains refresh delay.

In an analog system, a value of 100ms let have 4 frame averaged signal in input. A good starting point, and it

can be reduced to 50ms.

In digital system it depends on computation time of computer which produces the dose reference signal.

In case it produces the DAC refresh every frame, the values described for analog system are a good starting

point.

This is the correct dose level followed by controller.

DOSE REFERENCERS produces a POSITIVE signal which is proportional to the incident dose: the equilibrium

point is described in fluoroscopic system documentation, or can be obtained in manual mode evaluating the

image and measuring the voltage output of this signal.

When dose is in target point, generator do not move kV until dose signal exit from the interval here specified,

to avoid signal un-stabilization due to slight noise.

100mV is a good starting point, in case signal cables are driven closed to power cable, NOT SUGGESTED, maybe

this value have to be increased.

Here the balance value can be temporary changed through Serial Protocol in order to adapt the dose to exam,

in case external control consol uses Anatomic Driven exams. !FABnnnn will change it

The first (20) is the proportional coefficient: as High as FAST, more probability to have unstable regulation

The second coefficient is a future expansions, and in stable version will be hidden.

In case of GENESI monoblock this must be marked, the meaning is this: In case the signal rise over the balance

point, actual kV must decries. In case dose reference is lower than balance value, kV must go up.

TRANSFER COEFFICIENTS

it is possible to preset radio /cine data using fluoroscopies actual values, describing with a table the transfer

policy:

This can transfer kV, or kV & mA data using a table drawn pressing .

Using Serial link it is possible to set this ON / OFF through commands: !F2R0 – No transfer from tables

!F2R1 – Activate transfer from tables


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It is also possible to set a mAs limit when transferring also mA in

order to set the correct backup time when next Radiography will be in AEC mode.

In US3 two table are present:

FLUOROSCOPY to RADIO

FLUOROSCOPY to CINE

In GENESI monoblock FLUOROSCOPY to RADIO is the table used to transfer data in both SINGLE or SEQUENCE

mode.

HIGH CONTRAST (PULSED) FLUOROSCOPY


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In US3 generators Pulsed fluoroscopy can be either associated to workingstation or select on current using a

digital input .

In GENESI monoblock Pulsed Fluoroscopy is selected using SEQUENCE input ACTIVE, followed by FLUROSCOPY

COMMAND input ACTIVE.

Basic parameters of Pulsed fluoroscopy are: kV, mA policy (fixed / chained), Pulse time (ficed/chained)

Those basic parameters are described here: .

There are a lot of chaining method in R&D program, but final system will have the most flexible curve similar to

Continuos Fluoroscopy.

The way to draw this curve is different:

this information will be fixed and hide in stable version

pressing this key it is accessed a special panel where it is possible to describe the chaining

between HIGH VOLTAGE and PULSE POWER:


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Green curve is POWER output chained to kV

Yellow curve is PULSE TIME chained to kV

A linear policy, like FIXED mA and FIXED time can be described in this way:

Classic variable kV,fixed mA, fixed pulse time

A typical angio/cardiac curve can be described in this way:

40kV to 60kV: Peripheric Exam, Low Dose

60kV to 90kV: Peripheric High Density, “High variable dose and Energy for High Contrast”

90kV to 120kV: Central exam “Quasi-fixed High Power output, variable Beam Energy for very high density”

This curve is also dynamically modify using serial protocol:

Request Variable Curve: !HET63

Request new parametrization: !HEP60;4;6;90;10;16;120;11;16

Where: !HEP ; ; ; ; ; ; ; ;


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OTHER PARAMETERS

This data is used as starting point to compute a pre-indication of run,

nevertheless, generator is synchronized with starting incoming pulses.

In future expansion, as in factory test, this data will be used to make asynchronus pulses for analog

receptors/tests

This is used to emit after “n” pulses on Bucky reply input.

Some devices accept the pulse division (SLAVE DEVICE which grabs image on “Emission” digital output from

generator)

Other devices do not accept it(MASTER DEVICE) and when request emission want to see emission. In this case

this number must be 1.

NOTE: in case of automatic control, if it is set a value of division different from ONE, the system will use all the

pulses (maximum frequency) to adjust the dose, than will start dividing according to this parameter when dose

is inside balance interval.

BUCKY CHAIN

In US3 generator, synchro signal can be select pressing .

In GENESI monoblock, synchro signal is II step


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PULSED FLUORO REGULATOR

Parameters are already explaned in Continuos fluoro:

On serial bus, this section will be !H… instead of !F…

HCF to RADIO/CINE PARAMETERS TRANSFER

Description is exactly the same as per Continuos Fluoroscopy.

CINERADIOGRAPHY Cineradiography is a sequence of radiography in which it is possible to regulate dose using a dose reference

signal.

It acts as a powerful pulsed fluoroscopy, and parameter set are exactly equivalent to the ones already seen in

HCF:


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In US3 various are the sources where to get the information to activate this mode:

In GENESI Monoblock this mode is actived in this way:

1) in this case the sequence will be regulated by dose

reference signal.

Than, for emission:

ACTIVATE SEQUENCE digital INPUT

ACTIVATE PREPARE EMISSION digital INPUT

SEND PULSES ON EMISSION digital INPUT


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REGULATOR PARAMETERS

Parameters are exactly the one seen before in HCF,.

Here it is possible to describe what changes when regulator ask a modification:

.

Several control type are available in US3 generator .

In GENESI monoblock, regulation type is only the curve descrived before, driven by analog dose reference

signal “iec” as already seen for High Contrast Fluoroscopy.

GENERALLY

HCF is made with low power on SMALL FOCUS

CINE is made on LARGE FOCUS Also here, while generator is in stand-by status (!GST2) it is possible to dynamically overwrite :

!H.. turns to !RC…

In GENESI Monoblock programmable curve is the only control available, so:


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Automatic Cine enable: !RCS3

Cine control curve is Set: !RCC63

Alternative Cine custom curve parameters takes the synthax:

!RCP ; ; ; ; ; ; ; ;

A TYPICAL CINE CONFIGURATION applied to US3 generator:

GENERATOR SETUP V1 R2 - o d e l x r a y . e uUS3)/ENG/1044 - NAVIGATOR...NAVIGATOR STM for...

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