Piranha CT (455)


The Piranha CT measures and presents all parameters instantly and simultaneously. It measures kVp, Time, Total Filtration, CTDI parameters, dose length product, and presents Waveforms.

Several important parameters can be measured such as CTDI100, CTDIw, CTDIvol, DLP, FWHM, Geometric efficiency, and tube current variations.

All prices include freight cost. Pricing does not include Applicable Taxes or Customs Fees.

Piranha CT with CTDP
Measures kVp, Time, HVL, Total Filtration, CTDI parameters, dose length product and presents Waveform. Included: CT Dose Profiler, internal rechargeable battery, Internal Bluetooth & USB port, USB cable, 10" Tablet PC, Ocean software with Connect license, Power supply, USB Stick and soft-shell transport case. Art. No 9729455-00
Piranha CT with Ion Chamber
Measures kVp, Time, HVL, Total Filtration, CTDI parameters, dose length product and presents Waveform. Included: RTI CT Ion Chamber, Chamber Adapter, 10" Tablet PC, internal rechargeable battery, Internal Bluetooth & USB port, USB cable, Ocean software with Connect license, Power supply, USB Stick and soft-shell transport case. Art. No 9729455-15

Fast and accurate CT dose measurements

Piranha CT is the perfect solution for fast and accurate CT dose measurement, whether routine compliance and dosimetry checks or more complex QA testing. This is a multi-functional, QA meter for a wide range of CT equipment brands, models, and technologies.

It is easy to use with time-saving features that simplify repetitive tasks. All your measurements are transmitted directly to your Ocean software for storage, analysis, and reports.

You can be sure of extremely accurate measurements that can be used for in-depth analysis.

Use Piranha with RTI’s Chamber Adapter, Ion Chamber, and CT Dose Profiler for deep analysis of CT dose profiles.

Ocean software – quick and repeatable

Its compatibility with the Ocean diagnostic software provides quick and repeatable QA work. Ocean can perform instant real-time analysis during your measurements. Use your tablet/laptop as both an interactive display during the measurements and as a powerful analysis tool when you are back at the office.

All your measurements, along with the result and the report, will be stored inside your tablet or laptop; there is no unnecessary, time-consuming data transfer.

A complete QA solution instantly

The Piranha CT comes ready-to-use with everything you need included.  It is really an all-in-one multifunction meter. Connect to your computer wireless or via USB and you have a complete QA system!

Position Check feature

The unique feature of the Piranha CT makes it possible to check the position of the detector before measuring. By using the “Position Check” function, you can verify that the detector area is fully irradiated. Possible field inhomogeneities are also neutralized.

Piranha Multi (657) key features

  • All-in-one multifunction X-ray meter
  • Solid-state detectors = no need to compensate for temperature & pressure
  • Built-in energy compensation
  • Can be used together with ion chambers
  • Wide-range detection of total filtration
  • 100 meters Bluetooth range
  • Unique detector design to minimize position and rotation dependence
  • Automatic recognition of external probes
  • Small, compact, & robust – easy to place
  • Backscatter protected
  • Long-lasting rechargeable battery
  • Always free firmware upgrades
  • Upgradable to any Piranha model
  • Up to 10-year warranty
  • Two-year Calibration Cycle

General specifications Piranha

  • Size
    133x75x26 mm
  • Weight
    Approx. 400 g
  • Display
    PC or Windows Tablet
  • Software
    Ocean - Complete Software for X-ray QA
  • DatabaseSupport
  • Interface Type
    Built-in Bluetooth and USB
  • Detector Position Check
  • Simultaneous Dose Measurements
    Yes - up to two detectors simultaneously
  • Use of Dose Detector with Active AEC
    Yes - RTI Dose Probe or RTI T20
  • Bluetooth range
    100 m free-in-air
  • USB Cables
  • Power source
    Rechargable Li ion battery / Ext. power supply
  • Battery life
    Approx. 15 hours
  • Battery tested
    According to UN 38.3
  • No. of Exposures Needed for Measurement
  • Min. Exposure Time
    0.1 ms
  • Memory
  • Operating temperature
    15 °c – 35 °c
  • Storage temperature
    -10 °c - +50°c
  • Waveform Sampling rate
    4 – 2000 samples/s
  • Waveform recording time
    1024 ms – 524 s
  • Backscatter Protection
    Yes - main unit, RTI Dose Probe, and T20
  • Warranty
    Two years
  • Extended Warranty
    Up to 10 years
  • Calibration Cycle
    Two years
  • Standard
    Complies with relevant parts of the standards IEC 61674 and IEC 61676 for Dosimetric instruments
  • EMC Tested
    According to IEC 61326-1:2012
  • PTB Approval

Specifications Piranha CT (455)

  • Auto Compensation
  • Dose/Dose Rate
    50–150 kVp, 1–90 mm Al or 2 mm Cu
  • kV
    50–150 kVp, 1–90 mm Al or 2 mm Cu
  • Total Filtration
    50–150 kVp, 1–90 mm Al, or 2 mm Cu
  • Dose
  • Range
    0.1 nGy – 1500 Gy*
  • Inaccuracy
  • Dose Rate
  • Range
    1 nGy/s* – 320 mGy/s
  • Resolution
    0.2 nGy/s*
  • Trig Level
    40 nGy/s
  • Inaccuracy
    5% or 0.25 nGy/s
  • Tube potential
  • Range
    35–160 kVp
  • Minimum Dose Rate
    0.1 µGy/s
  • Inaccuracy
  • PPV
  • HVL
  • Range
    0.72–13 mm Al
  • Minimum Peak Dose Rate
    0.1 µGy/s
  • Inaccuracy
    10% or 0.2 mm Al
  • Quick HVL in one exposure
  • Total filtration
  • Range
    1.0–90 mm Al
  • Minimum Dose Rate
    0.1 µGy/s
  • Inaccuracy
    10% or 0.3 mm Al
  • Pulses
  • Range
    1–65535 pulses
  • Minimum Dose Rate
    0.23 µGy/s
  • Minimum Pulse Width
    0.5 ms at 1.8 µGy/s*
  • Pulse Rate
  • Range
    0.5–180 pulse/s
  • Minimum Peak Dose Rate
    0.23 µGy/s
  • Dose/Pulse
  • Range
    1 nGy/pulse–0.9 Gy/pulse*
  • Minimum Peak Dose Rate
    0.23 µGy/s*
  • Time
  • Range
    0.1 ms–2000 s
  • Resolution
    0.5 ms
  • Bandwidth
    1 kHz
  • Inaccuracy
    0.5% or 0.5 ms
  • Effective time
    Yes (Effective Exposure time)
  • Waveforms
  • Resolution
    0.5 ms
  • Bandwidth kV
    ≤1 kHz
  • Bandwidth Dose Rate
    ≤1 kHz

ISO/IEC 17025:2005 Calibration Laboratory

  • Tube Potential
    Mam, R/F, CT, Dental
  • Dose
    Mam, R/F, CT, Dental
  • Dose Area Product
  • Dose Length Product
  • Tube Current and Charge
    Mam, R/F, CT, Dental
  • Photometry
    Luminance, Illuminance
  • Electrometers
    Current, Charge
  • Notice
  • * With RTI Dose Probe




1. Do you have the latest software?
It is always good to have the latest update for your instrument. This is because we continuously fix bugs and make improvements.

2. Have you read our FAQ?
For the most common application and measurement issues, we have collected the answers in one place, please visit our FAQ page. This is so that you will get a quick answer to your question.

3. Have you checked the application notes?
In our application notes, you will find answers, solutions and tips for some specific measuring task that may arise. Here you will also find instructions on how to measure on some unusual X-ray machines and new measuring set-up.

4. Contact your local distributor
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