Is Any Additional Information Gained Regarding Margins Using 3D Tomosynthesis Vs 2D Conventional Digital Imaging When Imaging Operative Breast Specimens?

Study Overview
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Brief Summary
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Patients who are diagnosed with breast cancer will have surgery to remove the tumour. Where this is a local excision not mastectomy, the tissue removed is sent for x-ray imaging to assess that the abnormality has been removed and give an estimation of the distance from lesion to specimen edge. This allows the surgeon to decide whether to remove more tissue or not at the time. This study is designed to compare whether more accurate information about lesion to margin measurement can be obtained using 3 dimensional tomosynthesis imaging compared to 2 dimensional conventional digital imaging which is the type of imaging currently used. This has the potential to prevent some patients requiring a second operation to remove more tissue if the margins of the specimen are still involved with tumour. The study involves x-raying the specimen under both conditions when it arrives from theatre. Only the 2D image will be reviewed at the time as is current practice. The 3D image will be reviewed later and the measurements for lesion to specimen margin compared. The lesion to margin measurement as recorded by the pathologist will be taken as the 'gold standard' and the imaging measurements will also be compared to that. In theory, the use of 3D tomosynthesis should allow more accurate lesion to margin measurement because 3D can provide better visualisation of the lesion edges by removing the effect of superimposed tissue. The hypothesis states that the use of 3 dimensional tomosynthesis imaging should provide better lesion visualisation compared to 2 dimensional conventional digital imaging thus allowing more accurate lesion to margin measurement.

Official Title
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Is Any Additional Information Gained Regarding Lesion to Margin Measurement Using 3D Tomosynthesis Imaging Versus 2D Conventional Digital Imaging When Imaging Specimens of Breast Tissue Removed at Therapeutic Surgery

Conditions
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Breast Cancer

Intervention / Treatment
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* Radiation: 3 dimensional tomosynthesis imaging
* Radiation: 2 dimensional digital imaging


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient requires surgery to remove breast cancer and operative specimen needs to be x-rayed Exclusion Criteria: Patients with breast cancer who need mastectomy

Ages Eligible for Study
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Minimum Age: 30 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 3 dimensional tomosynthesis imaging<br>Breast specimen to be x-rayed using both conditions 3 dimensional tomosynthesis imaging 2 dimensional conventional digital imaging | Radiation: 3 dimensional tomosynthesis imaging<br>* Each operative specimen will be imaged twice using each condition<br>|
| Experimental: 2 dimensional digital imaging<br>Breast specimens to be x-rayed under both conditions 3 dimensional tomosynthesis imaging 2 dimensional digital imaging | Radiation: 2 dimensional digital imaging<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Shortest distance in mm from visible lesion to specimen margin | 2D conventional digital imaging - measured at time of surgery and info relayed to surgeon in theatre 3D tomosynthesis imaging - measured later with operator blinded to the 2D measurement Pathological measurement - final measurement used as the 'gold standard' | 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Breast cancer, Surgery, Specimen imaging