The UNITE collaborative has run a number of multi-centre projects. Each of our projects as a sub-page - for more details on each one, please head to the relevant page from the menu. For all of our multi-centre projects, collaborators will be offered collaborative authorship, as per guidance from the National Research Collaborative. If you have been a collaborator on a project, look at this guide by BURST on how to document your involvement in the projects.

Projects Overview & List

In this section of the website, we list the projects that have/are being carried out with the UNITE Collaborative. Below is a summary of all our projects and the current status. If you would like more information on each of the studies specifically, please also visit the subpages available on this section of the website. 

MACAFI Project

Status: Project Completed, Papers Published. 

CAASP Project

Status: Data Analysis in Progress, Submission Expected Soon. 

SPEED Project

Status: Recriutment OPEN

ACORN Project

Status: Recriutment OPEN

SPIINA Project

Status: Recriutment OPEN

Impact of COVID-19 on Interventional Radiology Services and Training

Systematic Review looking into the impact of COVID-19 on interventional radiology services and training. 

Study Outputs: 

Multicentre Audit of Cholecystostomy and Further intervention (MACAFI)

National audit looking at gallbladder drainage for acute cholecystitis, with 1100 patients from 36 centres. 

Study Outputs: 

Collaborative Acute Aortic Syndrome Project (CAASP)

Multi-centre service evaluation project to understand current acute aortic syndrome (AAS) pathways

Study Outputs: 

Splenic Embolisation Decisions in Trauma (SPEED)

The SPlEnic artery Embolisaiton Decisions (SPEED) study aims to answer key questions about splenic artery embolisation practice in the UK. This is a NIHR portfolio adopted study run from the University Hospital Plymouth NHS Trust, with the support of the Trauma and Audit Research Network (TARN) and British Society of Interventional Radiology (BSIR) and will focus on Major Trauma Centres (MTCs) in England only. 

Recruitment for SPEED is OPEN! Email Dr Paul Jenkins ( We are looking for one PI in each centre along with one assistant, of which one must be at least 1 year post FRCR registrar or an IR Consultant. 

Audit of Contrast Dose and Renal Injury After Interventional Radiology Procedures (ACORN)

The project aims to assess the incidence of AKI in patients who underwent IR procedures with intravascular contrast administration. Therefore, participants will be involved in collecting patient data before during and after certain IR procedures.

Expressions of interest OPEN.

ASsessing Practice of Image-guided spInal Injections - a National collaborative Audit (SPIINA)

This is a national snapshot study looking into the practice of image-guided spinal injections. 

Expressions of interest OPEN. Please go to