PTW Freiburg Physikalisch-Technische-Werkstätten Dr. Pychlau GmbH
October 2, 2008 – 1:56 amLörracher Str. 7
79115 Freiburg im Breisgau
Germany
Phone: +49 761 49055-0
Fax: +49 761 49055-70
http://www.ptw.de
info@ptw.de
Company Contacts
Department/ Name Address
Director of Sales and Marketing- Günter Hein Lörracher Strasse 7, 79115 Freiburg, Germany, Phone + 49 761 49055-0, Phone +49 761 490 55-12
Company Figures
Year of foundation 1922
Company Profile
PTW Freiburg Physikalisch-Technische-Werkstätten Dr. Pychlau
——————————————————————————–
Our Vision:
Since 1922 PTW is providing the technical community in radiotherapy, diagnostic radiology and nuclear medicine with appropriate measuring and test equipment for radiation dosimetry and quality control. From the beginning our innovative products, systems and solutions have been helping patients and health care professionals to improve life quality. The company has continuously created values for customers, shareholders and associates. We intend to pursue this aim and to continue our efforts to achieve our common purpose. Our vision is to be the leading provider of dosimetry and quality control equipment for radiation medicine, recognized and valued worldwide as the standard for innovation and profitable growth.
——————————————————————————–
Our Mission
Our ultimate ambition is to develop and distribute products of highest quality and by this to achieve complete customer satisfaction. Product solutions should match the user needs in the best possible way. We are following this basic strategy to always confirm the existing customer confidence and to win more customers continuously. Thus also the continuance of the company and the employment are secured on a long run.
——————————————————————————–
Our Guidelines
We strive for close and trustful customer relations by offering professional consultation, fair product pricing and effective after sales service.
To improve the benefit of our products and to provide the best solutions, we practice open, candid and unrestricted exchange of ideas with customers and associates.
We are supporting the team work of our experienced and motivated staff to realize these intentions and by frequent further training we make sure that our guidelines are commonly implemented into daily work.
Our high level quality management system, controlling the entire production process, is reviewed and developed permanently.
We act upon the benchmarks of Responsible Care with respect to associates, environment and society.
Our mission statement expresses that we are knowing what responsibility means.
Product Information
01.02.05 X-ray devices and accessories
Brachytherapy dosemeter with scintillation detector to verif 03.09.2008
Vented sensitive volumes of 0.0053 cm3, 0.02 cm3 and 0.20 cm3
Very thin flat entrance windows for dose measurements of low energy X-ray beams
Suitable for use in air and in solid state phantoms
The 0.02 cm3 soft X-ray chamber type 23342 is the standard ionization chamber for dose measurements in superficial radiation therapy. The 0.20 cm3 chamber type 23344 with its bigger sensitive volume is used for similar purposes, where a higher response is required. The usual calibration of both chambers is done at 15 kV to 70 kV. The chambers have a very flat energy response in the range from 10 kV to 100 kV. The 0.0053 cm3 soft X-ray chamber type 34013 has an extremely small sensitive volume and makes it possible to measure therapeutic X-ray beams with very small field sizes or with steep fluence gradients. The calibration is typically done at 15 to 50 kV. The energy response within this range is
± 2 %. The membrane material is polyethylene of 0.03 mm thickness. The guard ring borders the measuring volume. A calibration certificate is included. Air density correction is required for each measurement. A radioactive check device is available as an option.
MULTIDOS® Multi Channel Dosemeter 03.09.2008
——————————————————————————–
Multi channel dosemeter for absolute dosimetry, in-vivo measurements and quality control in radiation therapy
Dual channel therapy dosemeter according to IEC 60731 (field class); HV +400V, only M connecting system available
Twelve channel in-vivo dosemeter for diode measurements (connection box required)
Six channel in-vivo dosemeter for diode measurements in rectum and bladder (connection box required)
LINAC constancy check device for homogeneity and symmetry tests (check probe required)
48 channel electrometer for field analysis (LA48 linear array and extender ME48 required)
Complies with safety standard IEC 60601-2-9 as a dosemeter for patient contact
Measures dose and dose rate or charge and current simultaneously
MULTIDOS can be used with ionization chambers and semiconductor detectors. It meets or exceeds the standards for field class dosemeters as specified in IEC 60731. The calibration factors are stored in the unit and additional correction factors can be entered. Air density corrections are done by keying in air pressure and temperature. The large LC display shows the measuring results in Gy, Gy/min, R, R/min, C or A. MULTIDOS features a high measuring accuracy of better than ± 0.5 % and a very good long-term stability of less than ± 0.5 % per year. An RS232 interface is included as well as the MULTICAL software for calibration purposes.
OPTIDOS® Brachytherapy Dosemeter 03.09.2008
Brachytherapy dosemeter with scintillation detector to verify intravascular and ophthalmic radiation sources
Serves as a dosemeter for QC in intravascular therapy according to AAPM TG-601 and DGMP-Report No. 16 and for ophthalmic radiation therapy
Small, water-equivalent plastic scintillation detector for low energy beta and photon radiation
With 90Sr/90Y and 32P calibration traceable to NIST2
Measures dose, dose rate and time
The OPTIDOS3 is designed for dose verification in intravascular brachytherapy (for reduction of arterial restenosis risk). With its extremely small scintillation detector of 1 mm Ø x 1 mm, OPTIDOS is ideally suited for the calibration of beta-emitters in catheter systems according to AAPM TG-601. Using optional measuring phantoms, the source strength and the depth dose curve as well as the longitudinal and rotational homogeneity of line sources can be determined. OPTIDOS is also suitable for dosimetry of ophthalmic plaques. It features auto-start, auto-range and timer functions. An RS232 interface is included. The unit operates on mains or rechargeable batteries. A radioactive check source is required to compensate for the decrease of detector sensitivity independence of the total absorbed dose.
Radioactive Check Devices 03.09.2008
Radioactive check devices for air density correction and constancy checks of therapy dosemeters
Make it possible to perform air density corrections when using vented ionization chambers
Check proper functioning and constancy of the complete dosemeter
Two types for thimble and flat chambers are available
Include encapsulated low activity of 33 MBq (type T48012) resp. 20 MBq 90Sr (type T48010)
The radioactive check devices are recommended for high precision dosimetry. They enable medical physicists to check the stability of ionization chamber response and to determine air density correction factors. For sealed in-vivo ionization chambers the use of a radioactive check device is mandatory (IEC 60731). Check readings should be done each time before starting a dose measurement. The chamber calibration certificate includes the reference reading under standard conditions. The check reading will decrease over time due to the decay of the activity. The 90Sr half-value time is 28.7 years. Both check devices include shielding containers, and the check device T48012 is supplemented by a thermometer for controlling the check device temperature. Various holding devices for the adaptation of different ion chambers are available. Due to the arrangement of the radioactive source of the check device model T48012, the measuring volume of the inserted thimble chamber is irradiated from all directions. The cylindrical source of the check device model T48010 is placed near to the entrance window of flat ion chambers by means of the appropriate holding device. The source T48012 is equivalent to ISO class C64444, the source T48010 is equivalent to class C6X444. The dose rate in 10 cm distance is below 1 µSv/h (with cover closed). Please observe the national regulations for transport and use of radioactive material. Before shipping, we need a confirmation certifying that the purchaser is allowed to handle the radioactive sources.
Soft X-Ray Slab Phantom 03.09.2008
Suitable for soft X-rays up to 100 kV
Makes it possible to perform absolute dose and depth dose measurement in a solid state phantom
Supplied with chamber adapter plate and solid housing
The slab phantom type 2962 is designed for therapy dosimetry on X-ray therapy equipment in the energy range from 7.5 kV to 100 kV bremsstrahlung. It is used for depth dose measurements and for calibration purposes, using the soft X-ray chambers type 23342 (0.02 cm3) or 23344 (0.2 cm3). The slab phantom consists of 1 plate 1 mm thick, 2 plates
each 2 mm thick, 2 plates each 5 mm thick and 5 plates each 10 mm thick. This combination enables the user to vary the measuring depth from the surface to a depth of 6 cm in increments of 1 mm. To provide for backscatter, slabs are placed below the radiation detector. The size of the slabs is 13 cm x 13 cm. Two models with adapter plates are available for both above-mentioned chamber types. The slab phantom is supplied in a solid storage case, which is also used for the measurement set-up.
TANDEM Dual Channel Electrometer 03.09.2008
Dual channel electrometer for absolute dosimetry with TanSoft software and for relative dosimetry with TBA systems
Dual channel therapy dosemeter in accordance with IEC 60731 (field class), resolution 10 fA
Absolute dose measurement with TanSoft software
Fast scanning measurements in motorized water phantoms (time constant 10 ms)
Variable voltage supply
Accepts ion chambers and solid state detectors to be connected
High resolution for small size ion chambers
The TANDEM electrometer is calibrated in electrical current (A). It can be operated by a PC as an absolute therapy dosemeter. The TanSoft software provides calibration and correction factors for various detectors and displays the measurement results. The chamber voltage for both channels is individually programmable in 50 V increments up to 400 V with reversible polarity. The TANDEM is very fast and makes it possible to set minimum measuring intervals of 10 ms. It features auto-range and offset compensation. TANDEM is also designed to perform radiation field measurements referenced to an ionization chamber. In conjunction with a TBA therapy beam analyzer, MEPHYSTO software controls TANDEM for fast and accurate beam data acquisition. A trigger input synchronizes measurements with external signals.
UNIDOSwebline Universal Dosemeter 03.09.2008
High performance secondary standard and reference class dosemeter / electrometer with integrated network features
High quality reference class dosemeter for radiation therapy, diagnostic radiology and health physics
Integration in a LAN with the internet standard TCP/IP
Remote access functionality
E-mail capability, eg. to initiate self tests and to send a status report
Active, configurable TFT display with wide viewing angles
Easy and fast menu-driven handling with navigation knob and help system
The UNIDOSwebline sets another milestone in dosimetry after the UNIDOS has been accepted worldwide as the dosemeter of choice up to now. It is a high-precision, secondary standard reference class dosemeter combined with modern network features. This unique dosemeter offers high quality, reliability and an excellent adaptation to the measuring tasks. It has the best performance on the market. The Ethernet interface based on the TCP/IP protocol makes it possible to integrate the UNIDOSwebline in a LAN for remote access and e-mail capability. Its large, user-configurable TFT display guarantees visibility from wide angles. UNIDOSwebline features an easy to use menu prompting operation with help texts. Important settings can be password protected (different levels). The operation language is selectable. A comprehensive statistic and data logging function is implemented. Up to 100 measuring values are stored in a list. The data can be reviewed and exported. Mean value and relative standard deviation are displayed on the measuring screen. Chamber data are stored in a comprehensive chamber library. Air density is corrected by keying in air pressure and temperature or by means of radioactive check devices. The check device data are stored in a database. An internal clock calculates the isotope radioactivity decay.The device features both mains and battery operation.UNIDOSwebline surpasses the requirements for reference class dosemeters according to IEC60731, the IPEM secondary standard dosemeter guidelines, IEC 61674 for diagnostic radiology and IEC 60846 for health physics.
UNIDOS® E Universal Dosemeter 03.09.2008
Easy to use reference class or field class dosemeter / electrometer for routine dosimetry
An economical high quality dosemeter for universal use in radiation therapy and diagnostic radiology
Complies with the following standards:
IEC 60731 as a field class dosemeter
IEC 60731 as a reference class dosemeter (option)
IPEM guidelines on dosimetry transfer instruments as a secondary standard dosemeter (option)
IEC 61674 as a diagnostic dosemeter
High accuracy, excellent resolution (1 fA) and wide dynamic measuring ranges
HV power supply (0 ? ± 400) V in increments of ± 50V
Measures integrated dose (or charge) and dose rate (or current) simultaneously
RS232 interface for device control and data output
The lightweight and compact UNIDOS E is an easy to use dosemeter, mainly used for daily routine dosimetry in radiation therapy. Ion chambers and solid-state detectors can be connected. A chamber library makes it possible to store calibration data. Air density corrections are done by keying in air pressure and temperature. UNIDOS E displays the measured values of dose and dose rate in Gy, R, Gy/min, R/min or Gy·m. The electrical values charge and current are measured in C and A. The large, high-contrast LC display is easy to read. The device includes automatic leakage compensation and an RS232 interface. The high voltage between the ion chamber electrodes is checked automatically.
UNIDOS E features both mains and battery operation.
01.02.05.35 Accessories for x-ray generators
01.02.05.42 X-ray tubes
01.02.05.54 Software, units and phantoms for quality assurance in x-ray diagnosis
BeamAdjust Software 03.09.2008
QA software for online display of profiles acquired by different PTW arrays
Displays up to four profiles in real-time
Online analysis with color coded adjustment parameters
Displays reference curve
Creates a comprehensive data analysis according to selectable dosimetry protocols and the protocols of the accelerator manufacturers.
BeamAdjust software makes it possible to display the profiles along the main axes and diagonals in real-time. Various one- or two- dimensional PTW detector arrays can be connected. A reference curve can be displayed. The adjustment parameters are displayed for each curve. They change their color from green to red if a parameter is outside the limits. The limits are adjustable. The curves can be analyzed following different selectable dosimetry protocols and the protocols of the accelerator manufacturers. Together with STARCHECK the setup of a water phantom can sometimes be replaced, e.g. after service or repair. BeamAdjust is part of STARCHECK and part of MEPHYSTO mc2.
It can be used as a stand alone software e.g. with 2D-ARRAY seven29 or Linear Array LA48.
UniSoft Dosimetry Software 03.09.2008
Software for radiation therapy dosimetry according to international dosimetry protocols
Determines chamber correction factors and calculates absorbed dose to water
Put out data in worksheet format
Two versions are available to support all established international therapy dosimetry protocols
The UniSoft software is designed to determine the absorbed dose to water of high-energy photon and electron radiation out ofdosemeter readings from ionization chambers based on 60Co calibrations. UniSoft software, Edition 2000 supports the AAPM TG-51 and IAEA TRS-398 therapy dosimetry protocols by calculating the relevant correction factors for air density, polarity effect, saturation effect, radiation quality and displacement. A software module to control the dose meter and to position the detector is included. UniSoft software, Edition 1997 includes the IAEA TRS-277, AAPM TG-21 and TG-25 and DIN 6800-2 therapy dosimetry protocols. UniSoft features ionization chamber libraries to store chamber data necessary for the determination of correction factors. Dosimetry worksheets can be defined for different dosimetry protocols, beam qualities, types of ionization chambers and two kinds of air density correction.