dido-series

Diagnostic dosimeters

dido-series

Introducing the QUART dido-series

Ranges of application

The new QUART dido diagnostic dosimeters are multi-functional Quality Assurance platforms. Following the Compact Design Concept, their optimized size, small state-of-the-art detectors and very low weight make them the most compact, multi-purpose QA systems available.

Thus, the dosimeters may easily be stored and carried even in the pocket of a physician's smock. And with a special configuration, QUART dido dosimeters may also be used for x-ray related experimental extremity or body monitoring.

Ranges of application

Despite their unpretentious appearance the QUART dido dosimeters are technically sophisticated, absolutely accurate and unmatched in performance in their class! At present the QUART dido-series dosimeters can be used for QA and service operations in most x-ray applications (both digital and conventional):

Features for additional ranges of application (CT and mA/mAs) are being developed already and will soon be available.

Areas of application dido2000K
Item No. 11101
dido2000
Item No. 11104
dido2100K
Item No. 11102
dido2100
Item No. 11105
Mammography X X
Dental applications X X X X
Radioscopy / Fluoroscopy X X X X
Digital Substraction-Angiography X X X X

Device options

Parameters dido2000K
Item No. 11101
dido2000
Item No. 11104
dido2100K
Item No. 11102
dido2100
Item No. 11105
standard features
dose X X X X
kVp max X X
kVp effective X X
dose rate X X X X
dose rate after 1st half of exposure X X X X
exposure time X X X X
eQA features
wave form acquisition X X X X
dose-width product (fanned beam) X X X X
DWP rate X X X X
dose-area product (needle beam) X X X X
DAP rate X X X X

The K extension

The extension K in the device name identifies all dosimeters with incorporated kVp feature, i.e. the QUART dido2100K is officially calibrated and usable for kVp measurement in mammography, dental and R+F applications.

The dido detector

Ranges of application

The very compact state-of-the-art detector is the ingenious centrepiece of every dido-system. Being the smallest multi-functional solid state detector available for QA operations, it is the only detector which can be put directly on the cassette of a mammography unit for direct measurement beneath the patient couch without additional accessories. Plus, it does not influence the imaging automatics of any x-ray system! Multi-function for the dido detector means: one detector is used for any kind of x-ray application! It does not need to be unplugged and then plugged-in again If a dido-system should be used for field services ranging from QA in mammography to dental to R+F applications, the QUART didos detector does all the necessary measuring including the following parameters:

standard features

eQA features

All values are simultaneously acquired with a single exposure!

The eQA options

For enhanced Quality Assurance evaluations (eQA) every QUART dido-system can be hooked up to a computer via USB to read out wave forms and direct-printing of test protocols. Additionally, on the basis of its sophisticated technical design the QUART dido-series provides enhanced measurement options which other QA systems do not:

Every dido device is able to measure dose-width product in fanned x-ray beams which is essential for a reliable average patient dose determination with dental OPG systems (as specified in the German standard DIN V 6868-151, app. B)! Also, as an added feature, the dido detectors can measure dose-area product values in needle beams (as used for structure examination in x-ray diffraction).

Technical specifications

All dosimeters which are being shipped since Dec. 2006 can be firmware upgraded by the user via their USB interface. Thus, the device can easily be kept up-to-date with the latest features. Plus, no additional service handling costs or drop-out time would occur.

Extended functionalities means more value for our customers.
Kilovoltage
  • resolution
  • measured quantities
  • accuracy
22 - 160 kVp
  • 0.1 kVp
  • kV average, kV effective, kV peak
  • ±2%
Dose
  • resolution
  • accuracy
     
  • reproducibility
0.005 Gy - 999 Gy
  • 0.01 nGy
  • ±2% at 22-35 kVp
  • ±2% at 40-160 kVp
  • ±0.1%
Dose rate
  • resolution
  • accuracy
     
  • dose rate measurement
     
  • reproducibility
0.1 Gy/s - 1 Gy/s
  • 0.1 nGy/s
  • ±2% at 22-35 kVp
  • ±2% at 40-160 kVp
  • (Central) after 1st half of exposure
  • (Peak) after full circle
  • ±0.1%
Time
  • resolution
  • accuracy
0.5 ms - 20 sec. (up to 50 sec. optional)
  • 0.1 ms
  • ±0.5%
Dose-width product
  • resolution
  • accuracy
     
  • reproducibility
0.005 Gy*cm - 999 Gy*cm
  • 0.01 nGy*cm
  • ±2% at 22-35 kVp
  • ±2% at 40-160 kVp
  • ±0.1%
Range
  • Target/Filter Range
     
  • W/Al 40 - 150 kV; 2.5 mm of Al
  • Mo/Mo 22 - 39 kV; 30 m of Mo
Data communication
  • USB 1.1 (2.0 compatible) interface (activation optional)
  • Software activation optional (s/w license I, II or III available)
  • Hardware activation optional (Option I and II available)
Basic operation
  • single exposure measurement technology
  • auto-start, auto-stop & auto-reset
  • 9V bloc battery
  • power consumption <7 mA
  • battery life 2 years when used regularly
  • unit size: 16.1x7.0x4.4cm (LxWxH)
    unit weight: 235 g (incl. battery & cable)
  • detector size: 5.0x1.6x0.4cm (LxWxH)
    detector weight: negligible (!)


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