Accuracy:
evaluate how "precise" measurement dose based on measurement of two "strandard" long half-life, usually, as in our case cesium (137Cs with a half-life of 30 years) and cobalt (57Co with a half-life of 270 days). The average reading of a series of measurements is compared with the values \u200b\u200bof the National Institute of Standards and Technology, if the amount differs by more than 10% you should not use the dose calibrator.
controls are both standards at the time of installation, annually and after any repair technician.
We do on a monthly basis.
Constance
is to ensure that the dose calibrator readings do not vary over time. is obtained by measuring repeatedly a long half-life radionuclide (137Cs). The measure should not vary by more than 10% compared with baseline measurements made at the date of installation of the equipment.
The reading of each energy window or channel is carried out daily and compared with previous readings.
Linearity:
Evaluate the accuracy of the measure on the range of doses used in nuclear medicine. For example, you can measure the highest dose used and repeat the measurement at 6, 24, 30, 48 and 96 hours (or schermarela dose with calibrated screens gradually thicker in order to simulate the decay.
The check should be performed at instalalzione, monthly, and technical operations after repair.
Geometry:
Currency variations in the count due to the geometry of the vessel containing the dose to assess using a standard dose vials with a progressively and then eluted as the difference in readings should not vary however, most from 10% (it is good test for this purpose containers that are used daily such as syringes mainly)
the frequency of monthly and technical operations after repair
controls are both standards at the time of installation, annually and after any repair technician.
We do on a monthly basis.
Constance
is to ensure that the dose calibrator readings do not vary over time. is obtained by measuring repeatedly a long half-life radionuclide (137Cs). The measure should not vary by more than 10% compared with baseline measurements made at the date of installation of the equipment.
The reading of each energy window or channel is carried out daily and compared with previous readings.
Linearity:
Evaluate the accuracy of the measure on the range of doses used in nuclear medicine. For example, you can measure the highest dose used and repeat the measurement at 6, 24, 30, 48 and 96 hours (or schermarela dose with calibrated screens gradually thicker in order to simulate the decay.
The check should be performed at instalalzione, monthly, and technical operations after repair.
Geometry:
Currency variations in the count due to the geometry of the vessel containing the dose to assess using a standard dose vials with a progressively and then eluted as the difference in readings should not vary however, most from 10% (it is good test for this purpose containers that are used daily such as syringes mainly)
the frequency of monthly and technical operations after repair
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