NDRLS facility reference level data

The curves below show the cumulative distributions for the DLP and CTDIvol from adult DRL surveys submitted to ARPANSA between the end of April 2013 (when we started collecting information regarding iterative reconstruction) and the end of 2015. The plots display the percentage of surveys that achieved a facility reference level (FRL) below the dose specified on the x-axis.

The blue curve represents all of the submitted data, the green curve represents the surveys where iterative reconstruction (IR) was used and the red curve represents the surveys where IR was not used. The data portrayed is more recent than the data used to specify the current DRLs and, consequently, the DRLs do not match the 75th percentile of the plotted distributions – in general, the 75th percentile is considerably lower than the DRL.

Abdomen Pelvis, Adult, Single phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Abdomen Pelvis, Adult, Single phase

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Chest, Adult Single phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Chest, Adult, Single phase

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Chest, Abdomen, Pelvis, Adult, Single phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Chest  Abdomen Pelvis, Adult, Single phase

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Chest Abdomen Pelvis, Adult, Two phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Chest Abdomen Pelvis, Adult, Two phase

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Head, Adult, Single phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Head, Adult, Single phase

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Lumbar Spine, Adult, single phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Lumbar Spine, Adult, single phase

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Neck, Adult, Single phase

Curves showing CTDI and DLP cumulative distributions by with/without IR for Neck, Adult, Single phase

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Further information on International Best Practice for Radiation Protection of Patients can be found on the International Atomic Energy Agency Radiation Protection of Patients website, which can be accessed via the following link:

IAEA Radiation Protection of Patients (RPOP)

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