Condition category
Date applied
Date assigned
Last edited
Prospectively registered
Overall trial status
Recruitment status

Contact information



Primary contact

Dr Stephen Connor


Contact details

Neuroradiology Department
King's College Hospital
Denmark Hill
United Kingdom

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

The accuracy of quantitative diffusion weighted MRI and 18F-FDG PET-CT in the prediction of locoregional residual disease following radiotherapy and chemoradiotherapy for head and neck cancer


Study hypothesis

It is hypothesized that residual areas of active disease may manifest as areas of lower ADC (restriction) or greater heterogeneity. The addition of diffusion weighted MRI and post processing techniques to quantify diffusion (ADC), may thus improve the accuracy of imaging in detecting residual cancer post treatment.

Ethics approval

NRES Ethics Board: London Camberwell St Giles, 13/12/013, REC ref 13/LO/1876

Study design

Prospective cohort observational study

Primary study design


Secondary study design

Cohort study

Trial setting


Trial type


Patient information sheet

Not available in web format, please contact to request a patient information sheet


Head and Neck Cancer
Imaging (MRI and PET-CT)


Patients will undergo MRI including diffusion-weighted MRI before treatment and at 6 and 12 weeks after completion of radiotherapy (RT) or chemoradiotherapy. Patients will undergo 18F-FDG PET-CT imaging at 12 weeks after completion of RT or chemoradiotherapy as per institutional protocol.
In addition to the standard 1.5 tesla MRI (using a surface phased array neck coil with T1w pre and post gadolinium/T1w fat sat post gadolinium and T2w axial, T1 fat saturated post gadolinium coronal and STIR coronal), a research DWI sequence will be added (matched images in the axial plane with multiple b values to enable assessment of the perfusive and diffusive fraction. Further image analysis will be performed offline (Oncotreat, Siemens Healthcare, Erlangen, Germany). This will be both qualitative (presence/absence of hyperintensity relative to muscle), and quantitative (ADC0-1000 ADC0-150, ADC500-1000, ADChistogram, ); for the tumour volume of interest. This will be assessed for the primary tumour and pathological (on the basis of standard staging criteria) nodal disease. ROIs will be delineated for the whole tumour volume and for ROIs that avoid areas of necrosis, where possible. Image processing will be performed on the acquired baseline and post treatment MRI and PET images using statistical and model based methods to assess for first and second order texture features. This will be performed using proprietary software developed in-house (FAST, KCL) to calculate exploratory measures including MGLI, skewness, kurtosis, SDH, run length matrix, uniformity, entropy and fractal dimension.
The 18F-FDG PET-CT scan will be performed as per standard clinical practice: Patients are fasted for at least 6 hours prior to administration of 350-400MBq 18F-FDG. PET-CT scans are acquired 90 minutes after injection from the upper thigh to the base of skull on one of two scanners (GE, Discovery VCT or DST). Images are reconstructed using OSEM with a reconstructed slice thickness of 3.27mm and pixel size of 5mm. The CT component of the scans is acquired for the same anatomical coverage without administration of oral or intravenous contrast agent for anatomical co-localisation.
Pathological evaluation, where available, will be obtained as per usual institutional practice. No additional biopsy will be required as part of the study. Consensus review of clinical and imaging findings (including interval CT and ultrasound imaging) will be performed at 24 months post treatment for all patients.

Intervention type



Not Applicable

Drug names

Primary outcome measures

To compare quantitative DW-MRI with18F-FDG PET-CT in the prediction of locoregional residual disease following primary chemoradiotherapy or radiotherapy for stage 3 and 4 head and neck cancer

Secondary outcome measures

1.To assess whether different methods of calculating ADC (e.g. ADCperfusion, ADCdiffusion), and different methods of acquiring diffusion data can improve the prediction of residual disease
2. To assess if baseline ADC and changes in ADC from baseline to post treatment can improve prediction of residual disease
3. To determine if texture analysis, a post processing imaging technique, of acquired PET and MRI images to measure tumour heterogeneity can improve the prediction of residual disease
4. To compare DW-MRI parameters with standard structural MRI assessment for the prediction of residual disease
5. To correlate the quantitative MRI and PET-CT with locoregional progression-free survival (LPFS), disease-free survival (DFS) and overall survival (OS)
6. To determine if texture analysis (a post processing imaging technique of acquired standard and research MRI images to measure tumour heterogeneity) can improve the prediction of residual disease

Overall trial start date


Overall trial end date


Reason abandoned


Participant inclusion criteria

1. Male or female, 18 years age or older
2. Stage 3 or 4 primary squamous cell carcinoma of the head and neck
3. One centimetre measurable area of primary or nodal tumour on the basis of standard clinico-radiological staging Eastern Cooperative Oncology Group (ECOG) performance status 0 to 2
4. The capacity to understand the patient information sheet and the ability to provide written informed consent see summary
5. Treatment with curative intent
6. Histologically confirmed squamous cell carcinoma

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Standard contraindications to MRI and positron emission tomography computerised tomography (PET-CT)
2. Known allergy to Gadolinium contrast
3. Calculated glomerular filtration rate (GFR) (Cockroft or EDTA) < 30 mls/min
4. Prior chemotherapy or radiotherapy
5. Distant metastatic disease

Recruitment start date


Recruitment end date



Countries of recruitment

United Kingdom

Trial participating centre

King's College Hospital
United Kingdom

Sponsor information


King's College Hospital NHS Foundation Trust (UK)

Sponsor details

161 Denmark Hill
United Kingdom
+44 (0)20 3299 1980

Sponsor type

Hospital/treatment centre



Funder type


Funder name

Guy's and St Thomas' Charity

Alternative name(s)

Funding Body Type

private sector organisation

Funding Body Subtype

other non-profit


United Kingdom

Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Results - basic reporting

Publication summary

Publication citations

Additional files

Editorial Notes