1. WG-28 Goals Modalities and Types of Procedure
Patient Radiation Dose SR (P-RDSR)
Goals
Store the results of Patient Organ Dose calculations
Of a SINGLE procedure (a limited period in time)
including one or more modalities and procedure steps/phases
Of one or more organs
By one or more calculation methods
With the goals of:
Store final results in the patient records
Exchanging intermediate results with peers
Modalities and Types of Procedure
Single modality, single procedure step (studies with only a single phase)
CT, XA, XRF, Mammo, CR, DX, NM, PET
Multi-modality, single procedure step (multi-phase concept)
SPECT and PET/CT – internal organ dose (Stochastic)
Single modality, multi-procedure step (multi-phase concept)

2. Procedure Examples Patient Radiation Dose SR (P-RDSR)
Single modality, single procedure step (studies with only a single phase) CT
internal organ dose (Stochastic)
eye dose (Deterministic)
XA/RF (one time point)
skin dose map (Deterministic)
Mammography – glandular dose (Stochastic)
Projection x-ray (CR/DX)
entrance skin dose (Deterministic)
NM/PET – internal organ dose (Stochastic)
Multi-modality, single procedure step (multi-phase concept)
SPECT and PET/CT – internal organ dose (Stochastic)
Single modality, multi-procedure step (multi-phase concept)
CT – multi-phasic study
XA/RF (multi time points being combined)
XA localization/disgnostic plus intervention
Mammography/Projection X-ray – Tomosynthesis

3. Patient Radiation Dose SR (P-RDSR)
Data flow – simple case
Calculation
Method 1
Radiation
Dose SR 1
Patient
Dose SR 1
Organ 1

4. Patient Radiation Dose SR (P-RDSR)
One RDSR, multiple organs
Calculation
Method 1
Radiation
Dose SR 1
Patient
Dose SR 1
Organ 1
Organ 2
Organ 3

5. Patient Radiation Dose SR (P-RDSR)
Multiple RDSRs, multiple organs
Calculation
Method 1
Radiation
Dose SR 1
Patient
Dose SR 1
Organ 1
Radiation
Dose SR 2
Organ 2
Organ 3

6. Patient Radiation Dose SR (P-RDSR)
Multiple RDSRs, multiple organs, multiple methods
Calculation
Method 1
Radiation
Dose SR 1
Patient
Dose SR 1
Organ 1
Calculation
Method 2
Radiation
Dose SR 2
Organ 2
Organ 3

7. Patient Radiation Dose SR (P-RDSR)
Detailed data flow
Patient Dose Surface 3D map/view
Patient Surface FOR
Radiation
Dose SR
Radiation Exposure Information
- X-Ray exposure techniques
- Table, Gantry Angle, Beam Geometry, collimation
- Dose measure: CTDI, DAP, ...
X-Ray Equipment
Modality Frame of Reference (FOR)
Modality Image IOD
Organ Dose Calculation
System
Beam Modifiers
(Equipment Information)
- Table dimension
- Absorption material, …
Patient Registration Information
Actual scan range
Patient position on table
Fiducials?
Patient/Model to Equipment Registration
Patient Dose 2D view/map
(e.g. iso-dose map)
Patient
Dose SR
Calculated Patient Dose
Read old
P-RDSR into new calculation
Patient Model
Patient Model FOR

8. Patient Radiation Dose SR (P-RDSR): Templates
TID prdsrT01
Patient – Radiation Dose 1
TID 1002
Observer Context
CONTAINS:
Group Category:
Single phase or Multi-phases combined
Partial or Total organ analysis
Group Description:
Phase number (if multi-phase)
Single organ (e.g. skin, fetus)
What organs are included
Modalities:
 CT
 XA/RF
DX/MG NM 1
TID ptdsrT02
Procedure Dose
1-N
1-N
Dose Estimate Group
1-N
Radiation Output From System (reference to RDSR)
Organ Dose
1-N
Ref.
RDSR 1
TID prdsrT04
Dose Estimate Methodology 1
Patient Model
Ref. 1
3D Model 1
Registration to the output values
Ref. 1
TID prdsrT03
Dose Estimate Representation 1 1
Beam Modifiers
1-N
Representation Model
Registration
1-N
Dose Estimation Method 1
Ref.
2D / 3D Images