RaySafe

RaySafe Solo Detector User Manual Oct 2018

User Manual

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File Size: 2.77 MB

File Name: RaySafe - 5001053-4.00 - RaySafe Solo Detector User Manual Oct 2018.pdf

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USER MANUAL

RaySafe Solo

© 2018.10 Unfors RaySafe 5001053-4.00 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.

RaySafe Solo User Manual – Contents

CONTENTS INTRODUCTION... 5 Versions... 5 About this user manual... 5 THE RAYSAFE SOLO... 6 The RaySafe Solo detector options... 6 Easy to use...7 GETTING STARTED...8 Keys on the RaySafe Solo base unit...8 Battery and Charger... 9 R/F MEASUREMENT... 10 MAMMOGRAPHY MEASUREMENT... 13 CT MEASUREMENT... 16 How to measure CT dose... 16 LIGHT MEASUREMENT... 19 mA/mAs MEASUREMENT... 22 Passive mAs... 25 MEASUREMENT DEFINITIONS... 26 Dose... 26 Dose Rate... 28 kV/kVp... 28 Time... 29 Pulse... 30 HVL (Half Value Layer) – optional... 30 Total Filtration – optional... 31 mA and mAs... 31 RAYSAFE SOLO PC KIT... 32 RaySafe Xi View... 32 Transfer data to a computer... 33 Installing RaySafe Xi View... 33

RaySafe Solo User Manual – Contents Setup of Bluetooth communication... 33 Getting help...34 ACCESSORIES... 35 The RaySafe flexi stand... 35 The RaySafe OPG holder... 35 The RaySafe Cassette holder... 36 TIPS AND TRICKS...37 Arrangement of Measurement...37 Vertical Detector Placement... 38 kVp on AMX... 38 Display Codes... 38 Frequently Asked Questions... 39 Troubleshooting... 41 WARRANTY, SERVICE AND SUPPORT...43 Service...43 Return Procedure for Service and Warranty...43 DISPOSAL...44

RaySafe Solo User Manual – Introduction

INTRODUCTION VERSIONS This user manual covers the following articles: base unit version:

8221011

detector version:

8221022

8222015 8222016 8222017 8222018 8222019 8222020 8222021 8222022

ABOUT THIS USER MANUAL This user manual is intended to assist users in the safe and effective operation of the product described. Before attempting to operate the product, you must read these instructions for use, noting and strictly observing all WARNINGS and CAUTION notices. WARNING A WARNING alerts you to a potential serious outcome, adverse event or safety hazard. Failure to observe a warning may result in death or serious injury to the operator or patient. CAUTION

A CAUTION alerts you to where special care is necessary for the safe and effective use of the product. Failure to observe a caution may result in minor or moderate personal injury or damage to the product or other property, and possibly in a remote risk of more serious injury, and/or cause environmental pollution.

NOTE

Notes highlight unusual points as an aid to an operator.

These Instructions for Use describe the most extensive configuration of the product, with the maximum number of options and accessories. Not every function described may be available on your product.

RaySafe Solo User Manual – The RaySafe Solo

THE RAYSAFE SOLO The RaySafe Solo is intended for measurements in medical X-ray imaging applications. The RaySafe Solo is not intended for use during patient examination. The RaySafe Solo consists of a base unit and a detector. Communication between detector and base unit is purely digital, thereby minimizing sensitivity to mechanical or electrical stress.

THE RAYSAFE SOLO DETECTOR OPTIONS • The R/F detector has two sensors: R/F high is designed for conventional, high dose rate measurements. R/F low is designed for low dose rate measurements. The RaySafe Solo R/F base unit can be equipped with mA/mAs capabilities. • The MAM detector is used for both low and high dose rates generated in mammography applications. • The MAM dose detector is a Solo MAM detector, but measures only dose, dose rate and time. • The Dose detector is an R/F detector, but measures only dose, dose rate, time and pulses. • The RAD detector is designed for conventional, high dose rate measurements normally generated without a phantom between the detector and the X-ray source. • The CT detector is an ionization chamber, designed to measure CT dose for applications such as Dose Length Product (DLP) and Computed Tomography Dose Index (CTDI). • The DENT detector is designed for measurements on intraoral dental X-ray machines, OPG and Cone beam. • The light detector is designed to measure luminance on LCD and CRT monitors, as well as light boxes, and illuminance for diagnostic X-ray applications. • There is also a RaySafe Solo mAs model for measuring mA/mAs, time and pulses.

RaySafe Solo User Manual – The RaySafe Solo

EASY TO USE The RaySafe Solo is very easy to use. The built-in active compensation automatically applies corrections for different beam qualities, filtrations and temperatures. During fluoroscopy measurements the displayed values are continuously updated. If your instrument is equipped with the RaySafe Solo PC kit, data is sent on the serial port to your computer, where RaySafe Xi View shows numerical data as well as waveforms.

RaySafe Solo User Manual – Getting Started

GETTING STARTED 1. Connect the detector to the base unit with one of the two (2 and 10m) cables.

2. Position as required for the detector, see the following chapters. 3. Turn on the RaySafe Solo (ON/OFF key, see below), and the instrument specific setup information is displayed. In the SENSOR MENU a detector or sensor field for your application can be selected. 4. The instrument is now in MEASURE MODE and ready to measure. Press STEP to scroll through measured parameters (also possible during fluoroscopy). The last three displayed parameters will automatically show up after the next exposure. To change setup values (SETUP MENU) such as various delays, displayed units and other choices, press SELECT.

KEYS ON THE RAYSAFE SOLO BASE UNIT

ON/OFF: Turns on the RaySafe Solo and off when in SENSOR MENU. EXIT: Exit to the previous menu. STEP: A short press steps through available options. SELECT: A long press selects an option.

RaySafe Solo User Manual – Getting Started

BATTERY AND CHARGER The RaySafe Solo base unit has a chargeable 7.4 V Li-ion battery, providing approximately 20 – 40 hours of operation (depending on selected detector and whether Bluetooth is used). Since chargeable batteries have a self discharge current, RaySafe strongly recommends fully charging the battery before first use. Battery level is displayed, together with setup information, when the instrument is switched on.

There are two battery warning levels: • First warning level, “Battery low”: Finish your measurements and then charge the battery. • Second warning level, “Battery down”: No further measurements are recommended. The provided battery charger may be connected during measurement. When connected, the external power indicator is lit and Charging battery will be briefly displayed. The battery will be charged even if the instrument is turned off. The charge time from empty to full is approximately 4 hours.

RaySafe Solo User Manual – R/F Measurement

R/F MEASUREMENT Using R/F, RAD, Dose or DENT version.

For best accuracy, center the selected sensor field (R/F low, R/F high, RAD, DENT low or DENT high) and position the long axis of the sensor field perpendicular to the anode-cathode axis of the tube. 1. SENSOR MENU R/F low (R/F and Dose)

Sensor for conventional low dose rate measurements < 1 mGy/s (7 R/min), normally after a phantom.

R/F high (R/F and Dose)

Sensor for conventional high dose rate measurements > 1 mGy/s (7 R/min), normally before a phantom.

RAD

Sensor for conventional high dose rate measurements > 0.1 mGy/s (0.7 R/min), normally before a phantom.

DENT low

Sensor for low dose rate measurements < 1 mGy/s (7 R/min), normally after a phantom or for applications with high (> 10 mm Al or equivalent) inherent filtration.

DENT high

Sensor for high dose rate measurements > 1 mGy/s (7 R/min), normally before a phantom.

Press STEP to step between sensors and SELECT to select a sensor.

RaySafe Solo User Manual – R/F Measurement 2. MEASURE MODE After an offset adjustment, the instrument is in MEASURE MODE. The displayed values are updated after each exposure, or continuously after 4 seconds of fluoroscopy. kVp

kVp (for the R/F high, RAD or DENT high sensor at adequate signal levels) or kV (R/F low or DENT low). (Not available on RaySafe Solo Dose.)

Dose

Gy (Air kerma, free in air) or R (Exposure)

Dose rate

Gy or R per s, m or h

Time

ms, s

HVL

mm Al (only with optional HVL kit)

Pulses

pulses

Total filtration

mm Al (included in the optional HVL kit)

mAs

mAs (requires RaySafe Solo R/F with mAs)

mA (requires RaySafe Solo R/F with mAs)

3. SETUP MENU Press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup parameters.

RaySafe Solo User Manual – R/F Measurement All values are stored in a non-volatile memory and are valid until manually changed. At start up (after the battery status information), valid Trig delay, kVp delay and Calc. delay are displayed in sequence. (Factory settings in bold.) Trig delay

A delay in ms after the normal trig of the instrument. Utilize when an unwanted part of an exposure, such as a pre-pulse, should be excluded from the measurement. No measurements are performed during the Trig delay. (0, 5, 10, 50, 100, 200, 500, 1000, 2000 ms)

Trig level

Use Trig level to measure correct exposure time on waveforms with slowly increasing output, such as with single phase dental. The default setting is a low value, that depends on the selected sensor; see Specifications. Can be set to 25, 50 or 75 % of the peak value of the previous exposure. Use it with the same generator settings and FDD. Not selectable before the first exposure or at low dose rates.

kVp delay

Defined as the delay in ms, after the trig delay, but before the kVp measurement (and waveform) window begins. Use a kVp delay on machines with slow rising output, such as single phase intra oral machines and fluoroscopy systems. (0, 2, 5, 10, 50, 150, 300, 1000, 1200, 1500, 1700, 2000 ms)

Calc. delay

Defined as the dead time after end trig, before data is calculated. Default is 0.5 s but it is recommended to use a longer delay when measuring on pulsed fluoroscopy where the time between pulses may exceed 0.5 s. (0.5, 2, 4, 6, 7 s)

Dose unit

Change the default units and/or use this feature to recalculate a value to a different unit. (Gy or R per s, m or h, where 1 Gy = 114.1 R.)

Backlight

Display lighting option. (off, 2, 5, 10 s, on)

Auto Power Off

Never, or after 5, 20 or 60 minutes of inactivity.

Info

Displays the serial number (S/N) and firmware version of the connected detector and the RaySafe Solo base unit and the calibration date for the selected sensor. There is also a possibility to reset the instrument settings to factory defaults.

kVp Mode

“kV only” prevents the instrument from calculating kVp, which otherwise occurs automatically when R/F high is selected and the signal level is high enough (“kV/ kVp”). Useful for example when measuring near that signal level. Not applicable for RaySafe Solo Dose.

RaySafe Solo User Manual – Mammography Measurement

MAMMOGRAPHY MEASUREMENT

6 cm

Place the detector along the X-ray tube axis (with the cable end pointing towards the X-ray machine). Make sure that the center of the MAM sensor square is placed 6 cm from the examination table front edge. 1. SENSOR MENU Sensor for mammography measurements with submenu for selection of beam qualities, see list to the right (depending on configuration). The choice of “paddle” or “no paddle” only applies if the kV measurement is going to be made with or without a paddle in the beam and does not affect dose or HVL measurements.

Mammography

NOTE!

Select W/Rh* for measurements on Fujifilm Amulet Innovality, Fujifilm Aspire Cristalle, Fujifilm Aspire HD Plus, Fujifilm Aspire HD-s, Fujifilm Amulet f, Fujifilm Amulet s, Planmed Clarity 2D, Planmed Clarity 3D, Planmed Nuance, Planmed Nuance Excel, IMS Giotto Tomo and Hologic Selenia (W).

2. MEASURE MODE The displayed values are updated after each exposure. kV

Mo/Mo No Paddle Mo/Mo Paddle Mo/Rh Mo/Al Rh/Rh Rh/Al W/Rh No Paddle W/Rh Paddle W/Rh* No Paddle W/Rh* Paddle W/Ag

kV (Mo/Mo, W/Rh) (Not available on RaySafe Solo MAM dose.)

RaySafe Solo User Manual – Mammography Measurement Dose

Gy (Air kerma, free in air) or R (Exposure)

Dose rate

Gy or R per s, m or h

Time

ms, s

HVL

mm Al (only with optional HVL kit)

3. SETUP MENU Press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup parameters. All values are stored in a non-volatile memory and are valid until manually changed. At start up (after the battery status information), valid Trig delay, kVp delay and Calc. delay are displayed in sequence. (Factory settings in bold.) Trig delay

A delay in ms after the normal trig of the RaySafe Xi. Utilize when an unwanted part of an exposure, such as a pre-pulse, should be excluded from the measurement. No measurements are performed during the Trig delay. (0, 5, 10, 50, 100, 200, 500, 1000, 2000 ms)

Trig level

kVp delay

Defined as the delay in ms, after the trig delay, but before the radiation and kV waveform window (in the RaySafe Xi View) begins. (0, 2, 5, 10, 50, 150, 300, 1000, 1200, 1500, 1700, 2000 ms)

Calc. delay

Defined as the dead time after end trig, before data is calculated. Default is 0.5 s but it is recommended to use 2 s when measuring on generators with a pre-pulse. (0.5, 2, 4, 6, 7s)

Dose unit

Change the default units and/or use this feature to recalculate a value to a different unit. (Gy or R per s, m or h, where 1 Gy = 114.1 R)

RaySafe Solo User Manual – Mammography Measurement Backlight

Display lighting option. (off, 2, 5, 10 s, on)

Auto Power Off

Never, or after 5, 20 or 60 minutes of inactivity.

Info

RaySafe Solo User Manual – CT Measurement

CT MEASUREMENT The RaySafe Solo CT detector is an ion chamber with a 10 cm active length and a built-in bias voltage. The center and the edges (+ 5 cm and - 5 cm) of the active volume are marked on the phantom adapter.

An automatic correction of temperature and pressure will be applied for all dose measurements. The temperature sensor is positioned inside the active ionization chamber and the measurement is corrected for the true temperature inside the phantom. The pressure sensor is placed inside the RaySafe Solo CT detector housing and is calibrated to show the actual pressure at the measurement facility’s altitude. Readings of pressure can therefore vary from announcements in newspapers or web sites, which normally refer to the pressure at sea level. The measured temperature and pressure for each exposure can be displayed when using the RaySafe Xi View.

HOW TO MEASURE CT DOSE Position the RaySafe Solo CT detector in the phantom adapter and then into the phantom position. Turn on the meter and select CT dose.

For positioning of the RaySafe Solo CT detector free in air, Unfors RaySafe recommends the use of the RaySafe flexi stand.

RaySafe Solo User Manual – CT Measurement 1. SENSOR MENU Ion chamber sensor

CT Dose

Press STEP to step between sensors and SELECT to select a sensor. NOTE!

When turning on the base unit with the RaySafe Solo CT detector connected, “Stabilizing” will be displayed for a few seconds while the electronics are stabilizing.

2. MEASURE MODE After an offset adjustment, the instrument is in MEASURE MODE. The displayed value is updated after each exposure. Dose Gy (Air kerma, free in air) or R (Exposure) Dose Length Product Gycm or Rcm

NOTE!

The RaySafe Solo CT detector can be used in two dose modes (dose or dose length product (DLP)), selectable in the SETUP MENU. Since the RaySafe Solo CT chamber is 10.0 cm long, DLP readings (in Gy•cm or R•cm) will always be exactly 10 times higher than dose readings.

RaySafe Solo User Manual – CT Measurement Dose unit

Change the default units and/or use this feature to recalculate a value to a different unit. (Dose: Gy, Gycm, R or Rcm, Temperature: °F or °C, Pressure: kPa or mmHg)

Backlight

Display lighting option. (off, 2, 5, 10 s, on)

Auto Power Off

Never, or after 5, 20, 60 minutes of inactivity.

Info

Displays the serial number (S/N) and firmware version of the connected detector and the RaySafe Solo base unit and the calibration date for the sensor. There is also a possibility to reset the instrument settings to factory defaults.

Temperature and pressure values are shown only in the RaySafe Xi View, not on the RaySafe Solo base unit display.

RaySafe Solo User Manual – Light Measurement

LIGHT MEASUREMENT The RaySafe Solo light detector is designed to measure luminance on LCD and CRT monitors, as well as light boxes, and illuminance for diagnostic X-ray applications.

The choice between luminance and illuminance is automatic depending on whether the luminance tube is mounted or not. 1. SENSOR MENU Illuminance

For illuminance measurements.

LuminanceLCD

For luminance measurements on LCD.

LuminanceCRT

For luminance measurements on CRT display, light box or similar.

Barco

For luminance measurements on Barco monitor. MFGD 5621 HD, MDMG 5121, MFGD 5421, MDCG 3120, MDCG 2121 or MFGD 3621.

Press STEP to step between sensors and SELECT to select a sensor. 2. MEASURE MODE Luminance

cd/m2 or fL

Illuminance

lux or fc

RaySafe Solo User Manual – Light Measurement Press STEP when in MEASURE MODE to freeze and move the measured value to the second line of the display. A new press on STEP will move a new measured value to the second line of the display. Store the measured value (and send it via the RS-232 interface) in the RaySafe Solo memory by pressing SELECT. A memory counter (Mem #) will be displayed at the very bottom of the display.

BARCO

STEP •

3. SETUP MENU Press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup parameters.

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