The QUART didoEASY meters are designed for users who emphasise high precision in dosimetric applications but do not require the performance of a full-range dosemeter package.

In basic configuration QUART didoEASY meters can be used to measure parameters which are essential for service and quality assurance operations at x-ray equipment such as dose, dose rate and time. Of course, as with all QUART meters – with maximum precision.

- kVp and PPV measurement are available in the QUART didoEASY+ MR version.

- Direct-HVL and kVp / PPV measurement are additionally available in the QUART didoEASY++ MR version.

Since the meters do not require any pre-setting procedure, measurement results are acquired very quickly:

1. Position the detector and switch on the didoEASY meter...

2. Set the x-ray equipment to the desired parameters...

3. Expose... - and simply read all measurement information from the meter‘s display.

The R detector automatically compensates all major medical x-ray beam qualities. No further corrections or compensations are required.

The M detector for mammography automatically compensates for Mo/Mo beam quality. Corrections factors are provided for further radiation qualities.

Like the QUART dido2000 series meters, the detector of the QUART didoEASY meter series also measures the integrated dose-width product (DWP) at dental panoramic equipment.* A feature that provides real added value for QUART users.

Technical specifications

General Features

• Exposures: one to acquire all parameters
• Mode: auto-start, auto-stop & auto-reset
• Power supply: Rechargeable Li Ion accu
• Battery time: approx. 120 hrs. until recharge required
• Base size: 17x7x4.5cm (LxWxH)
• System weight: 200 g
• Detector size: 6.0x1.8x0.5cm (LxWxH)
• Detector weight: negligible (!)

Specifications

didoEASY MR    basic configuration

• Dose: 0.2 µGy - 999 Gy (Uncertainty: ±5% @ 25-160 kV / Resolution: 0.01 nGy)
• DLP*: 0.2 µGy*cm - 999 Gy*cm (Uncertainty: ±5% @ 50-160 kV / Resolution: 0.01 nGy*cm)
• Dose Rate: 0.3 µGy/s - 1 Gy/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGy/s)
• Time: 0.5 ms - 300 s (Uncertainty: ± 0,5% / Resolution: 0.1 ms)

didoEASY+  MR   - features added kV measurement 

• Dose: 0.2 µGy - 999 Gy (Uncertainty: ±5% @ 25-160 kV / Resolution: 0.01 nGy)
• DLP*: 0.2 µGy*cm - 999 Gy*cm (Uncertainty: ±5% @ 50-160 kV / Resolution: 0.01 nGy*cm)
• Dose Rate: 0.3 µGy/s - 1 Gy/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGy/s)
• Time: 0.5 ms - 300 s (Uncertainty: ± 0,5% / Resolution: 0.1 ms)
• Pulses: 1 - 9999 (Uncertainty: ± 1 pulse)
• Pulse Rate: 0.1 - 250 pulses/s (Uncertainty: ± 0.05 pulses/s)
• kVp / PPV: 
• 25 – 35 kV (applies to M detectors)
• 50 – 130 kV (applies to R detectors)
• (Uncertainty: ±5% at calibrated reference points / Resolution: 0.1 kV); Exposure conditions: Mammo: Mo/Mo; HVL 0.6 – 2.2 mm Al eq., correction factors provided for further radiation qualities / R&F: HVL 1.4 – 7.0 mm Al eq.

didoEASY++  MR   - features added kV and direct-HVL measurement

• Dose: 0.2 µGy - 999 Gy (Uncertainty: ±5% @ 25-160 kV / Resolution: 0.01 nGy)
• DLP*: 0.2 µGy*cm - 999 Gy*cm (Uncertainty: ±5% @ 50-160 kV / Resolution: 0.01 nGy*cm)
• Dose Rate: 0.3 µGy/s - 1 Gy/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGy/s)
• Time: 0.5 ms - 300 s (Uncertainty: ± 0,5% / Resolution: 0.1 ms)
• Pulses: 1 - 9999 (Uncertainty: ± 1 pulse)
• Pulse Rate: 0.1 - 250 pulses/s (Uncertainty: ± 0.05 pulses/s)
• kVp / PPV: 
• 25 – 35 kV (applies to M detectors)
• 50 – 130 kV (applies to R detectors)
• (Uncertainty: ±5% at calibrated reference points / Resolution: 0.1 kV); Exposure conditions: Mammo: Mo/Mo; HVL 0.6 – 2.2 mm Al eq., correction factors provided for further radiation qualities / R&F: HVL 1.4 – 7.0 mm Al eq.
• Direct-HVL: 0.1 – 11 mm Al (HVL output, Uncertainty: ±8% / Resolution: 0.1 mm Al); Internal filtration 0.1 – 12.5 mm Al equivalent (25-35 kV range applies to M detectors / 40-130 kV range applies to R detectors)

* S A Mitchell and C J Martin, Comparison of ionisation chamber and semiconductor detector devices for measurement of the dose–width product for panoramic dental units, J. Radiol. Prot. 33 321 (2013).

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