time to learn for the future there is no good unless you do it excerpt from the autobiography of dr herbert pychlau 1897-1971 when i returned to freiburg as a 27-year-old after a serious illness i thought about what i wanted to do prof wilhelm hammer in my future professional 1885-1949 inventor of the relay-based hammer doselife i considered qualifying meter and founder of ptw as a university lecturer but in the end fate would have it that i met dr hammer dr pychlau s supervisor annotation of the translator in the street he invited me to have a look at what he had been doing in the meantime and told me about his having set up a business for the production of his invention a dosemeter based on an electrostatic relay it was out of sheer friendship back then that i went on a series of trips either to set up dosemeters or to instruct their users in the operation dr hammer himself had serious financial difficulties to contend with and couldn t take many trips owing to his official dutie
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radiation therapy absolute dosimetry equipment radioactive check devices unisoft dosimetry software radioactive check devices for air density correction and constancy checks of therapy dosemeters features 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 d
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radiation therapy therapy beam analysis therapy beam analysis tba therapy beam analysis equipment mp3 phantom tank mp3-m phantom tank mp3-t phantom tank mp3-p phantom tank mp3-xs phantom tank mp2 phantom tank mp1 mp1-s mp1-m phantom tanks plexitom 2d positioning device tandem dual channel electrometer tba electronics trufix detector positioning tba detector holding devices tba scanning detectors la48 linear chamber array tpr options tba positioning devices scan lift lifting/reservoir carriage mp3 lifting carriage mp3 water reservoir mephysto software tba trolley cable sets for fixed cable installation tba 1d-air scanner gantry mount device tba 1d-air scanner table-top device la48 1d-air scanner gantry mount device la48 1d-air scanner table-top device sla48 2d-air scanner gantry mount device sla48 2d-air scanner table-top device filmsoft software for film densitometry film digitizers for film densitometry me48f fast measurement system peakfinder water column 43 43 44 44 45 45 46 46 47 4
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radiation therapy tba therapy beam analysis notes 60
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radiation therapy quality control notes 78
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diagnostic radiology absolute dosimetry equipment sfd chambers for diagnostic x-rays flat chamber for diagnostic x-rays shadow free ionization chambers 6 cm3 and 75 cm3 for absolute dosimetry features plane parallel chambers for the measurement and monitoring of radiation output in diagnostic radiology shadow free design causes hardly no interference with automatic exposure control aec do not influence the x-ray image for measurements in front of and behind a phantom the high precision sfd chamber suitable for mammography has a sensitive volume of 6 cm3 the energy response for mammography radiation qualities 25 35 kv is better than ± 2 and better than ± 3 within the conventional range 50 150 kv the high precision sfd chamber for conventional radiology has a sensitive volume of 75 cm3 the energy response within the conventional range is better than ± 2 and better than ± 3 within the mammography range 25 35 kv both flat sfd chambers are used for dose and dose rate measurements i
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diagnostic radiology quality control equipment test patterns for x-ray image tests lead foil test patterns for x-ray resolution focal spot size and mtf tests features enable easy quality checks of x-ray imaging chains a multitude of different test patterns with various lead thicknesses are available spatial frequencies are given in line pairs per mm lp/mm rectangular circular and high resolution line group tests with various spatial frequency ranges are available focal spot measuring test patterns for easy determination of the size and shape of x-ray focus spots are available ordering information this is just a selection about 60 different patterns are available more information upon request 115
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nuclear medicine quality control quality control quality control equipment pet cylinder phantom acc nema nu2-2001 pet sensitivity phantom acc nema nu2-2001 pet emission phantom acc nema nu2-2001 spect phantom acc iec 61675-2 pet emission phantom acc cec project pet emission phantom acc iec 61675-1 dynamic heart phantom animal pet qc phantoms standard spect phantom thyroid uptake neck phantom flood phantoms for qc of gamma cameras flood phantom positioning carts atw3 shielded transportation cart tungsten bar phantom for gamma camera qc quasi 3 orthogonal hole phantoms 135 135 136 136 137 137 138 138 139 139 140 141 141 142 142 133
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health physics radiation monitoring equipment moderator sphere neutron area monitor 0.1 liter chamber for radiation monitoring 300 mm polyethylene sphere for area monitoring of natural neutron radiation background using albedo dosemeters features suitable for area radiation monitoring measures the neutron component of the annual background radiation in three months periods uses the albedo neutron dosemeters the moderator sphere1 is a passive dose equivalent meter for area monitoring of natural radiation background it measures the neutron component of the natural annual background radiation of about 30 µsv the monitoring period is at least 3 months the passive neutron dose equivalent meter consists of a moderator polyethylene sphere of 300 mm diameter and a detector holder placed at a central position in the sphere an albedo dosemeter case with inserted tld card is placed inside the detector holder for measurement the user must specify the types of tld card and albedo dosemeter case in
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radiation medicine quick view quick view product families the size of this product catalog shows that the ptw product range is quite comprehensive it meets the tasks and needs of users for the measurement of ionizing radiation and the quality control of irradiation equipment in medicine and health physics the products are presented in this catalog in the order of their application and use this chapter includes listings of certain product families and reviews the entire range of the presented product families each product is characterized within these reviews by a small picture the item number the product name a short description and the page where the product is described more comprehensively this chapter reviews the following product families tba therapy beam analyzers various sets of basic equipment for data acquisition and analysis of external beams in radiotherapy are available depending on different types of phantom tanks optional items for the tba analyzers are also listed ptw do
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africa egypt morocco south africa america argentina brazil canada chile colombia costa rica ecuador mexico panama uruguay usa venezuela asia bahrain bangladesh china hong kong india indonesia iran israel japan jordan korea lebanon philippines saudi syria taiwan australia australia europe austria the objective from the start was to be a trustworthy and competent partner for our customers throughout the world this also includes maintaining quality standards and comprehensive service and support we will continue to do everything possible in the future to manufacture high-quality dosimetry products which users and patients can trust we know what responsibility means malaysia pakistan arabia singapore thailand vietnam and new zealand belarus belgium bulgaria cyprus czech republic denmark finland france germany greece hungary iceland italy malta netherlands norway poland portugal romania russia slovakia spain sweden switzerland turkey ukraine united kingdom ptw-freiburg physikalisch-technisc
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