RaySafe

RaySafe X2 and X2 Solo Detector User Manual Feb 2021

User Manual

51 Pages

File Type: PDF

File Size: 1.68 MB

File Name: RaySafe - 5001083-8-10 - RaySafe X2 and X2 Solo Detector User Manual Feb 2021.pdf

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Page 1

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.

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... About the X2 system... Navigate the base unit... View measurement... Access archived measurements... Analyze waveforms... Connect the base unit to a computer... Connect to computer using Bluetooth... Upgrade the base unit software... Charge the battery... Use the flexi stand... X2 Base Unit: Specifications... Setting: Screen brightness... Setting: Speaker volume... Setting: Time and date... Final disposal of the system...

4 4 5 5 5 6 7 7 8 8 8 9 9 9 9 9

R/F... Measure with R/F Sensor... Measure on dental panoramic machines... R/F Sensor: Specifications... R/F Sensor: Measurement parameter definitions... Setting: Units... Setting: Stop delay... Setting: Ignore prepulses... Setting: AC pulse counting... Setting: Correction factor...

11 11 12 13 13 14 14 15 16 16

DENT... Measure with DENT Sensor... Measure on dental panoramic machines... DENT Sensor: Specifications... DENT Sensor: Measurement parameter definitions... Setting: Units... Setting: Stop delay... Setting: Ignore prepulses...

18 18 19 20 20 21 21 22

MAM... Measure with MAM Sensor... Mo/Rh kV with MAM Sensor... W/Al scanning with MAM Sensor... MAM Sensor: Measurement parameter definitions... MAM Sensor: Specifications... Setting: kVp mode... Setting: Units... Setting: Stop delay... Setting: Ignore prepulses...

24 24 25 25 26 28 28 28 29 29

RaySafe X2 – CONTENTS

CT... Measure with CT Sensor... Measure kVp on CT... CT Sensor: Measurement parameter definitions... CT Sensor: Specifications... Setting: Units... Setting: Stop delay...

31 31 32 32 33 33 33

Light... Measure with light sensor... Light Sensor: Measurement parameter definitions... Light Sensor: Specifications... Setting: Units...

35 35 36 36 36

Survey... Measure with Survey Sensor... Survey Sensor: Zero adjust... Survey Sensor: Measurement parameter definitions... Survey Sensor: Specifications... Setting: Trig mode... Setting: Units... Setting: Stop delay...

37 37 38 38 39 40 40 41

Volt... Measure with Volt Sensor... Volt Sensor: Specifications... Volt Sensor: Measurement parameter definitions... Setting: Stop delay... Setting: Conversion factor... Setting: Trig level...

42 42 44 44 45 45 45

mAs... Measure mAs... mAs: Measurement parameter definitions... Setting: Stop delay... Setting: Ignore prepulses... Setting: mA mode...

46 46 47 48 49 49

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.

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 automatically 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.

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.

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 information, 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 software.

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.

RaySafe X2 – GENERAL

X2 BASE UNIT: SPECIFICATIONS Dimensions:

34 × 85 × 154 mm (1.3 × 3.3 × 6.1 in)

Weight: Power source: Battery time: Connector:

521 g (18.4 oz) Rechargeable Li-ion battery About 10 hours of intensive usage USB micro (5 V DC, 1.3 A), for PC communication and charging 4.3” LCD with capacitive touch 2 × USB Type A About 10 000 stored measurements -25 – +70 °C (-13 – +158 °F) Non-condensing 15 – 35 °C (59 – 95 °F)

Display: X2 Sensor connectors: Data storage: Storage temperature: Storage humidity: Operating temperature: Operating atmospheric pressure: Operating humidity:

55 – 110 kPa (5000 m above sea level) < 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.

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.

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 highest 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.

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: Storage humidity: Operating temperature:

-25 – +70 °C (-13 – +158 °F) Non-condensing 15 – 35 °C (59 – 95 °F)

Operating atmospheric pressure: Operating humidity: Reference point:

70 – 110 kPa (3000 m above sea level)

Direction of incident radiation: Minimum field of uniform radiation: Angular deviation, dose: Backscatter:

< 80 % relative humidity, non-condensing Center of upper sensor marking, depth indicated by line on the sensor side Orthogonal to the sensor marking surface The thick solid line marked on the sensor < 1% within ± 10° 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 filtration are moving averages ending approximately 1–2 s before end trig. Live readings are moving averages.

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 Röntgen (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 measurement. Note that you have to wait as long as the stop delay setting (t) after the last exposure before the measurement ends and values will be displayed.

Stop delay setting shorter than the time between pulses (t<T), will result in many short measurements (one for each pulse).

SETTING: IGNORE PREPULSES Use the ignore prepulses setting to remove one or many unwanted prepulses from the measurement.

Ignore prepulses = 0, the whole exposure is captured.

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.

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 machines. Measure without bow tie filter if possible. This setting affects only the kVp value and is intended for GE Field Service Engineers.

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.

RaySafe X2 – DENT

MEASURE ON DENTAL PANORAMIC MACHINES

Expose.

Read the result. Tip! You can also position the sensor centered in the direct beam without the holder, using for example tape.

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