RaySafe x2 User manual

USER MANUAL
RaySafe X2
RaySafe X2 Solo

Please consult the built-in help in your base unit
to ensure that you read a version corresponding to your specific instrument setup.
© 2020.09 Unfors RaySafe 5001083-8.00
All rights are reserved. Reproduction or transmission in whole or in part, in any form or by any
means, electronic, mechanical or otherwise, is prohibited without the prior written consent of the
copyright owner.

CONTENTS
General .............................................. 4
AbouttheX2system .................................... 4
Navigatethebaseunit.................................... 5
Viewmeasurement...................................... 5
Accessarchivedmeasurements ............................... 5
Analyzewaveforms...................................... 6
Connect the base unit to a computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect to computer using Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Upgradethebaseunitsoftware ............................... 8
Chargethebattery...................................... 8
Usetheflexistand...................................... 8
X2BaseUnit:Specifications ................................ 9
Setting:Screenbrightness.................................. 9
Setting:Speakervolume................................... 9
Setting:Timeanddate ................................... 9
Finaldisposalofthesystem................................. 9
R/F ............................................... 11
MeasurewithR/FSensor .................................. 11
Measure on dental panoramic machines . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
R/FSensor:Specifications ................................. 13
R/F Sensor: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . . 13
Setting:Units ........................................ 14
Setting:Stopdelay ..................................... 14
Setting:Ignoreprepulses................................... 15
Setting:ACpulsecounting ................................. 16
Setting:Correctionfactor .................................. 16
DENT .............................................. 18
MeasurewithDENTSensor................................. 18
Measure on dental panoramic machines . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DENTSensor:Specifications ................................ 20
DENT Sensor: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . 20
Setting:Units ........................................ 21
Setting:Stopdelay ..................................... 21
Setting:Ignoreprepulses................................... 22
MAM .............................................. 24
MeasurewithMAMSensor ................................. 24
Mo/RhkVwithMAMSensor................................ 25
W/Al scanning with MAM Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
MAM Sensor: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . 26
MAMSensor:Specifications................................. 28
Setting:kVpmode ..................................... 28
Setting:Units ........................................ 28
Setting:Stopdelay ..................................... 29
Setting:Ignoreprepulses................................... 29
2

RaySafe X2 – CONTENTS
CT ................................................ 31
MeasurewithCTSensor................................... 31
MeasurekVponCT..................................... 32
CT Sensor: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . . . 32
CTSensor:Specifications.................................. 33
Setting:Units ........................................ 33
Setting:Stopdelay ..................................... 33
Light ............................................... 35
Measurewithlightsensor .................................. 35
Light Sensor: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . . 36
LightSensor:Specifications................................. 36
Setting:Units ........................................ 36
Survey .............................................. 37
MeasurewithSurveySensor................................. 37
SurveySensor:Specifications ................................ 38
Setting:Trigmode ..................................... 38
Setting:Units ........................................ 39
Setting:Stopdelay ..................................... 40
Volt ............................................... 41
MeasurewithVoltSensor .................................. 41
VoltSensor:Specifications ................................. 43
Volt Sensor: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . . 43
Setting:Stopdelay ..................................... 44
Setting:Conversionfactor.................................. 44
Setting:Triglevel ...................................... 44
mAs ............................................... 46
MeasuremAs ........................................ 46
mAs: Measurement parameter definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Setting:Stopdelay ..................................... 48
Setting:Ignoreprepulses................................... 49
Setting:mAmode...................................... 49
3

RaySafe X2 – GENERAL
GENERAL
ABOUT THE X2 SYSTEM
The RaySafe X2 is intended for measurements in medical X-ray imaging applications. The RaySafe
X2 is not intended for use during patient examination.
The RaySafe X2 consists of a base unit, sensors and the RaySafe View computer software.
The sensor options are:
 R/F, for radiography and fluoroscopy measurements, with or without a phantom between
the sensor and the X-ray source.
 MAM, for all kinds of mammography measurements.
 DENT, for dental X-ray measurements.
 CT, an ionization chamber for measurements on CT dose applications.
 Light, for illuminance measurements and luminance measurements on monitors and light
boxes.
 Survey, a sensitive sensor for measuring leakage and scattered radiation, as well as other
applications with low dose rate.
 Volt, for voltage measurements on X-ray equipment.
 mAs, an integrated tube current meter.
RaySafe View is a PC software for use with the X2 instruments. In RaySafe View, you can view
measurements and waveforms on a larger display, store measurements, transfer data to Excel or
other software and get software updates for the base unit.
When you want to measure, all you need to do is:
1. Turn on the base unit
2. Connect a sensor
3. Position the sensor
4. Expose
For more detailed information, see the help chapter for each sensor.
Note! The RaySafe X2 Solo is an X2 system with limited sensor functionality.
Note! If cleaning is needed, disconnect and power off the RaySafe X2 and wipe with a damp
cloth.
4

RaySafe X2 – GENERAL
NAVIGATE THE BASE UNIT
The base unit has a touch screen and three buttons.
Swipe up and down on the home screen to access your previously recorded measurements. Swipe
right from the home screen to go to the setup screen, from which you can make settings and view
information about the system. Tap on a parameter to get larger digits, one parameter at a time.
You can also measure in this mode. From the single parameter screen, you can swipe right to
view the measurement specifications, and left to see waveforms, if available.
The three buttons below the screen are:
 Menu, brings up a menu on the screen
 Home, takes you to the home screen
 Back, takes you back to the previous screen
On the back side of the base unit are:
 Reset switch, for forced reboot of the base unit
 Charger/PC connector, for charging or using with a PC with RaySafe View
 mAs connector, for tube current measurements
 Two sensor connectors
 Ethernet connector, for communication with a PC via TCP/IP
 On/Off switch. Press the button shortly to enter sleep mode. After a while in sleep mode,
the base unit will turn off automatically. Press the button for 2 seconds to turn off the base
unit immediately.
VIEW MEASUREMENT
Swipe up or down to scroll between measurements. Tap on a parameter to get larger digits. Swipe
right to access the parameter information with measurement specifications. Swipe left to view a
waveform, if available for the current parameter.
Press the menu button and select Notes to access more information about the measurement and
to be able to add a note.
ACCESS ARCHIVED MEASUREMENTS
Measurements from previous sessions are automatically archived in the base unit. The memory
allows about 10000 measurements. When the memory is full, the oldest measurements are auto-
matically deleted.
The measurements are sorted by date and time.
Via base unit
To access archived measurements, press the menu button and select Measurement archive. Select
a session to see the individual measurements for that session. Swipe up or down to scroll between
measurements.
5

RaySafe X2 – GENERAL
Via RaySafe View
To access archived measurements via RaySafe View, connect the base unit to a computer running
RaySafe View and select Import from base unit under the File menu.
ANALYZE WAVEFORMS
View a single parameter by tapping on that parameter on the home screen. Swipe left to go to
the waveform screen.
The dark line represents an average of the measured values. If there are more values than possible
to show on the screen, the light blue pixles represent the range of these values.
The dashed lines indicate the measured parameter values, in this case average dose rate and time.
Tap on the button in the upper right corner to analyze the waveform.
Slide the handles to view, for example, the peak dose rate of a pulse.
Pinch with two fingers to zoom in the waveform area.
Tap the button again to exit the analyze mode.
6

RaySafe X2 – GENERAL
CONNECT THE BASE UNIT TO A COMPUTER
Connect the base unit to a computer running RaySafe View using a USB cable (recommended
length: max 2 m). RaySafe View can be installed from the installation media that came with the
system or be downloaded from raysafe.com.
If you measure, the results will automatically show up in RaySafe View.
You can also select Import from Base Unit in the File menu to import measurements stored in the
base unit.
From RaySafe View, you can export measurements to Excel and other software. For more infor-
mation, see the RaySafe View help, reached from the Help menu in RaySafe View.
CONNECT TO COMPUTER USING BLUETOOTH
Connect the Bluetooth adapter to a SENSOR port on the base unit. A gray Bluetooth status
symbol appears in the upper right corner of the screen.
RaySafe View will automatically search for base units. The first time you connect, you will have
to select your base unit from the Bluetooth menu in RaySafe View. The Bluetooth status symbol
will turn white when connected.
7

RaySafe X2 – GENERAL
When restarting RaySafe View, the base unit will automatically get connected.
UPGRADE THE BASE UNIT SOFTWARE
Connect the base unit to a computer running RaySafe View and make sure that the computer
is connected to internet. If there are any updates available, the ”Updates available” symbol will
show up in RaySafe View. Click on that symbol and follow the instructions to upgrade the soft-
ware.
CHARGE THE BATTERY
To charge the base unit, connect it to a wall socket with the included power supply. The charging
time is approximately 4 hours.
The battery lasts for about one day of extensive usage, which means that it is recommendable to
start your working day with a fully charged unit.
The X2 system automatically enters power saving mode when idle for some minutes. If the system
does not wake up by radiation or the buttons on the front, press the power button.
Tip! The base unit will maintain the energy level when connected to a computer.
USE THE FLEXI STAND
The flexi stand can be used in many different setups. Below are some examples.
8

RaySafe X2 – GENERAL
X2 BASE UNIT: SPECIFICATIONS
Dimensions: 34 ×85 ×154 mm (1.3 ×3.3 ×6.1 in)
Weight: 521 g (18.4 oz)
Power source: Rechargeable Li-ion battery
Battery time: About 10 hours of intensive usage
Connector: USB micro (5 V DC, 1.3 A), for PC communication and
charging
Display: 4.3” LCD with capacitive touch
X2 Sensor connectors: 2 ×USB Type A
Data storage: About 10 000 stored measurements
Storage temperature: -25 – +70 ° C (-13 – +158 ° F)
Storage humidity: Non-condensing
Operating temperature: 15 – 35 ° C (59 – 95 ° F)
Operating atmospheric
pressure:
55 – 110 kPa (5000 m above sea level)
Operating humidity: <80 % relative humidity, non-condensing
SETTING: SCREEN BRIGHTNESS
Adjust the screen brightness by sliding the bar.
Reduce the brightness to prolong the base unit battery time.
SETTING: SPEAKER VOLUME
0 % turns the speaker off and 100 % is max volume.
SETTING: TIME AND DATE
Set time and date according to your local time. Measurements are automatically stored in the
base unit, sorted by time.
FINAL DISPOSAL OF THE SYSTEM
Final disposal is when the user disposes of the product in such a way that it can no longer be
used for its intended purpose(s).
In the European Union (the WEEE directive), this label indicates that this product should not be
disposed of with household waste.
9

RaySafe X2 – GENERAL
This product should be disposed of at an appropriate facility to enable recovery and recycling.
Unfors RaySafe supports users in:
 Recovering reusable parts.
 Recycling of useful materials by competent disposal companies.
 Safe and effective disposal of product.
For advice and information, contact your Unfors RaySafe Service Organization first, or otherwise
the manufacturer.
10

RaySafe X2 – R/F
R/F
MEASURE WITH R/F SENSOR
Place the connected sensor centered in the field with the crosshair towards the X-ray source. The
angle of the sensor in the horizontal plane has no impact on the measurement result.
Expose.
Read the result.
Tip! Tap a parameter to get large digits, parameter information, and, if applicable, waveform.
Switch between these by swiping sideways.
Note! The dark line centered in the circle represents the active area of the sensor. The lines on
the side of the housing marks the vertical position.
11

RaySafe X2 – R/F
MEASURE ON DENTAL PANORAMIC MACHINES
Position the panoramic holder with the X2 sensor centered, with the whole sensor rectangle inside
the direct beam.
Adjust the position by exposing radiochromic or fluorescent film. You can also search for the high-
est dose value.
Expose.
Read the result.
Tip! You can also position the sensor centered in the direct beam without the holder, using for
example tape.
12

RaySafe X2 – R/F
R/F SENSOR: SPECIFICATIONS
Dimensions: 14 ×22 ×79 mm (0.5 ×0.9 ×3.1 in)
Weight: 42 g (1.5 oz)
Storage temperature: -25 – +70 ° C (-13 – +158 ° F)
Storage humidity: Non-condensing
Operating temperature: 15 – 35 ° C (59 – 95 ° F)
Operating atmospheric
pressure:
70 – 110 kPa (3000 m above sea level)
Operating humidity: <80 % relative humidity, non-condensing
Reference point: Center of upper sensor marking, depth indicated by line on
the sensor side
Direction of incident radiation: Orthogonal to the sensor marking surface
Minimum field of uniform
radiation:
The thick solid line marked on the sensor
Angular deviation, dose: <1% within ±10 °
Backscatter: Insensitive to scattered radiation outside ±70 °
The combined standard uncertainty for a dose or dose rate measurement is calculated according
to the method described in IEC 61674:2012, annex A. The calculation considers, among others,
the influence quantities repeatability, radiation quality, direction of incident radiation, pressure and
temperature and is based on the calibration uncertainty of the RaySafe calibration lab as well as
data from PTB type testing. The combined uncertainty is less than 5 %.
R/F SENSOR: MEASUREMENT PARAMETER DEFINITIONS
Dose and HVL are calculated from all recorded data.
Dose rate is the average dose rate, calculated as dose/time.
Time starts the first time the dose rate waveform reaches 50% of peak, and ends the last time it
drops below 50%. Live readings are time since start trig.
kVp and total filtration are calculated from an average of samples above 90 % of peak signal
level.
Pulses are counted at every start trig with more than 4 ms since last end trig. With AC pulse
counting set to On, pulses are counted each time the dose rate waveform rises above 50 % of
peak.
Pulse rate and dose per pulse are moving averages.
For measurements longer than 3 s, the final readings of dose rate, kVp, HVL and total fil-
tration are moving averages ending approximately 1–2 s before end trig. Live readings are moving
averages.
13

RaySafe X2 – R/F
Parameters in dose rate waveform
T: Time
P1,P2,P3: Pulses
DR: Dose rate
: Dose
Parameters in tube voltage waveform
T: Time
P1,P2,P3: Pulses
kVp: Peak tube voltage
Note! If measurements are made simultaneously with the R/F sensor and mAs cable, any shared
parameter (time, pulses or pulse rate) will be taken from the R/F sensor.
SETTING: UNITS
Select displayed unit for dose and dose rate.
1 Gy = 114.1 R
Note! X2 systems subject to legal calibration (Eichung) in Germany or Austria do not have the
possibility to change dose unit to R¨ontgen (R).
SETTING: STOP DELAY
The stop delay setting defines for how long the instrument will wait for more radiation to include
in the same measurement.
14

RaySafe X2 – R/F
Use a longer stop delay when measuring on a pulsed fluoroscopy system or to get a prepulse recorded
into the same measurement as the following ordinary exposure.
Stop delay setting longer than the time between pulses (t>T), will result in one long measure-
ment. Note that you have to wait as long as the stop delay setting (t) after the last exposure be-
fore the measurement ends and values will be displayed.
Stop delay setting shorter than the time between pulses (t<T), will result in many short measure-
ments (one for each pulse).
SETTING: IGNORE PREPULSES
Use the ignore prepulses setting to remove one or many unwanted prepulses from the measure-
ment.
Ignore prepulses = 0, the whole exposure is captured.
15

RaySafe X2 – R/F
Ignore prepulses = 1, the (first) prepulse is excluded from the measurement.
Note! This setting will affect all parameters, including the dose measurement.
SETTING: AC PULSE COUNTING
The AC pulse counting method can help in certain situations, but should normally be turned Off.
Exceptions:
To avoid counting pre-heat pulses on intra oral AC machines, select On.
To count individual pulses on full wave rectified single phase AC machines, select On.
Note! This setting affects pulses,pulse rate and dose per pulse.
SETTING: CORRECTION FACTOR
For some specific measurement setups, a correction factor is applicable. In all other cases, use
None.
Siemens CT Straton
Some Siemens CT Somatom machines have a Straton tube. To get a correct kV value on such
machines, select Siemens CT Straton. This setting affects only the kVp value.
GE CT 10.5 °
When measuring kV on a GE CT machine with 10.5 ° anode angle, select GE CT 10.5 ° to use
a correction factor specifically adapted for maximum kV accuracy on such machines. Measure
without bow tie filter if possible. This setting affects only the kVp value and is intended for GE
Field Service Engineers.
GE CT 7 ° Monopolar
When measuring kV on a GE CT machine with 7 ° anode angle and monopolar tube, select GE
CT 7 ° Monopolar to use a correction factor specifically adapted for maximum kV accuracy on
such machines. Measure without bow tie filter if possible. This setting affects only the kVp value
and is intended for GE Field Service Engineers.
16

RaySafe X2 – R/F
GE CT 7 ° Bipolar
When measuring kV on a GE CT machine with 7 ° anode angle and bipolar tube, select GE CT
7 ° Bipolar to use a correction factor specifically adapted for maximum kV accuracy on such ma-
chines. Measure without bow tie filter if possible. This setting affects only the kVp value and is
intended for GE Field Service Engineers.
17

RaySafe X2 – DENT
DENT
MEASURE WITH DENT SENSOR
Place the connected sensor centered in the field with the crosshair towards the X-ray source. Make
sure that the whole sensor rectangle is inside the direct beam.
Expose.
Read the result.
Tip! Tap a parameter to get large digits, parameter information, and, if applicable, waveform.
Switch between these by swiping sideways.
Note! The rectangle in the circle represents the active area of the sensor. The lines on the side
of the housing marks the vertical position.
18

RaySafe X2 – DENT
MEASURE ON DENTAL PANORAMIC MACHINES
Position the panoramic holder with the X2 sensor centered, with the whole sensor rectangle inside
the direct beam.
Adjust the position by exposing radiochromic or fluorescent film. You can also search for the high-
est dose value.
Expose.
Read the result.
Tip! You can also position the sensor centered in the direct beam without the holder, using for
example tape.
19