Breast Cancer, Microcalcification, Image
Conditions
Keywords
Mammography
Brief summary
Conventional mammography, breast sonography and breast MRI have specific weaknesses. In particular, mammography has a low sensitivity for the detection of mammary carcinoma in patients with a dense breast. Phase contrast mammography could help to overcome some of these limitations. Observational study.
Detailed description
Category C2 Medicine product without CE label. Objective(s): Phase 0: Imaging of mastectomy and breast biopsy samples to validate the image quality and radiation dose. Phase 1: Determination of accurate radiation dose in vivo; dose exposure should remain within the range specified in the investigational brochure. Evaluation of cohort size for phase 2. Phase 2: Assessment of the diagnostic performance of phase contrast mammography compared to conventional digital mammography. Ouctomes: Sensitivity and specificity of phase contrast mammography compared to conventional digital mammography. Measurements and procedures: Phase 0: Phase contrast mammography of the mastectomy, tumorectomy or breast biopsy samples is performed after breast surgery in addition to the standard clinical procedures Phase 1: Phase contrast mammography is performed before the operation in case of known breast carcinoma in addition to the standard clinical procedures Phase 2: Phase contrast mammography is performed directly in the clinical routine. The result is compared with the result of the conventional digital mammography and the ultrasound examination. Number of Participants with Rationale: Phase 0: expected to be 30 Phase 1: expected to be 20 Phase 2: expected to be 300 (correct number will be defined according to Phase 1)
Interventions
DIAGNOSTIC_TESTExperimental Intervention
Mammography in the radiology department is commonly performed using General Electrics Medical Systems Senographe Essential device
Sponsors
Center for Proton Therapy, Paul Scherrer Institute, Villigen,Switzerland
GratXray AG
University of Zurich
Study design
Observational model
OTHER
Time perspective
OTHER
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Inclusion criteria -Phase 0: * \>18 years * Mastectomy, tumorectomy or biopsy planned * Informed consent of the patient Inclusion criteria -Phase 1: * \>18 years * BI-RADS 5 (highly suggestive of malignancy at ultrasound or mammography) or 6 (known biopsy proven malignancy); * Scheduled for mastectomy or breast conserving surgery with radiotherapy. * Informed consent of the patient Inclusion criteria - Phase 2: * \>40 years * undergoing mammography for screening or diagnostic purpose. * Informed consent of the patient
Exclusion criteria
*
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Sensitivity and specificity of PCM compared to FFDM represent the primary outcome since the limited sensitivity of mammography, in particular in patients with dense breasts, represents the major limitation of the currently applied FFDM. | 30 month | The standard reference will be the histologic specimen after biopsy |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Lesion extent will be estimated using both PCM and FFDM. Pathological measurements obtained from the surgical specimen will be used as standard of reference. | 30 month | The aim is to evaluate if PCM, due to the expected improved visibility of the lesions, can allow for a better estimation of lesion extent with subsequent benefit on the preoperative planning. |
Countries
Switzerland
Contacts
Primary ContactThomas Frauenfelder, Prof
Backup ContactJudith Jehle
Outcome results
None listed