Table 5.

Summary of areas of no consensus. +modal answer agree; o, modal answer notnecessary; x, modal answer disagree;

Standardisation– No consensus
Acquisition
A minimum reconstructed pixel size at 1.5T and 3T	+
A minimum of 3 averages per bb-value at 1.5T and 3T for routine clinical	+
The gradient encoding scheme to be 3 orthogonal directions.	o
The fat suppression technique to be STIR at 3T only	o
The acquired slice thickness to be no less than 5 mm at 3T only	+
A maximum axial FoV at 3T	o
A minimum acquisition pixel size at 3T only	+
Optimisation
No consensus for routine clinical imaging at 1.5T and 3T to
Perform repeatability and reproducibility scans on normal volunteers	o
Perform optimisation of sequence on a sugared water test object at room temp	+
RoutineQA and QC
No consensusfor routine clinical imaging at 1.5T and 3T to
Perform monthly tests	o
The type of tests that should be done or how to do them
ADC linearity in the Z-axis	+
Measure B0 distortion	o
Measure the eddy current distortion	o
ADC linearity in 3 different directions	+
What test object should be used
Iced water phantom	+
With known biologically relevant ADC values	+
Minimallydiffusing medium (e.g. oil)	o
No consensus for research trial imaging at 1.5T and 3T to
Performdaily or weekly tests	o
The type of tests that should be done
ADC linearity in three directions	o
AnalysisVisualisation & Reporting
No consensus was reached for basic ADC quantitation on whether
A base signal intensity noise level should be set prior to ADCcalculation	+
To perform a bed station signal intensity normalisation over thewhole body prior to ADC calculation	x
No consensus was reached for disease staging and response assessment on how
To define a ROI/VOI
Geometric	o
Set threshold based on Max value	o
Use another MR weighted image to free draw VOI/ROI (staging only)	o
Whether whole body disease burden would be a useful measure	o
Reporting the standard deviation for each VOI/ROI	+
Specifying a percentage value of increase or decrease of tumour volume onsome ADC threshold to indicate positive or negative response respectively.	+
ADC values should be reported alongside
Biopsy samples	o
Blood serum markers	o
Other modality images (response assessment only)	+
Using arotating greyscale MIP of whole body ADC map similar to whole PET scan	o
The need for image registration for longitudinal reporting	+