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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT03302819
Other study ID # CCR4702
Secondary ID
Status Not yet recruiting
Phase N/A
First received September 21, 2017
Last updated October 4, 2017
Start date November 1, 2017
Est. completion date December 1, 2018

Study information

Verified date September 2017
Source Royal Marsden NHS Foundation Trust
Contact Richard Sidebottom
Phone 02073528171
Email richardsidebottom@nhs.net
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The MARIA breast imaging system is a novel CE-marked radio-frequency (RF) medical imaging device. The system employs an electromagnetic imaging technique that exploits the dielectric contrast between normal and cancerous tissues. The performance and imaging characteristics of MARIA are not yet well demonstrated. The investigators aim to evaluate some aspects of this potentially important new technology.


Description:

The early diagnosis of breast cancer is of paramount importance, with a 5-year survival rate of 97% if the cancer is caught "locally", deteriorating to 79% if it has progressed to the "axillary" lymph nodes, and 23% if it has spread to the rest of the body, known as "metastasised."

Diagnosis is currently achieved through clinical examination, imaging with mammography (MMG) and/or ultrasound (US) and needle biopsy. Mammography is dependent upon adequate breast compression to allow greater contrast differentiation between tissue structures, this is not only uncomfortable, but in younger women with 'dense' breast tissue the contrast difference between normal tissue and tumour is minimal despite compression. Furthermore mammography uses ionising radiation, which means that a risk/benefit calculation is weighted against repeated or frequent use. Frequently it is necessary to use additional imaging such as ultrasound or MRI for diagnostic support.

Breast tumours have an additional property that can distinguish them from normal and this is defined by the dielectric value. This has two components - the dielectric constant, which affects the velocity of propagation of radio waves and therefore their wavelength, and the conductivity, which affects the rate of attenuation. Typically a tumour has a dielectric constant of 45-50 and a conductivity of 2S/m, whereas breast fat is 5-15 and 0.2-1S/m respectively but with considerable range. Normal glandular tissue is intermediate. These differences in dielectric constant enable a consideration of the value of this data in breast cancer diagnosis.

Several attempts to exploit this property for imaging have been made. The outcomes have been similar in that the presence of a tumour is detectable, however limitations in depth for detection and mode of the technology were identified.

Due to updated technology in the MARIA device, previous limitations from similar studies are not reported to be a problem.

This study aims to determine the proportion of patients with breast cancer who are correctly diagnosed by MARIA, and to stratify this by breast density and histological type. In addition a pilot study will be performed to investigate the imaging characteristics and performance of MARIA in the assessment of benign and malignant lesions in patients attending the symptomatic breast clinic.

The MARIA scan will be in addition to any standard diagnostic procedures, including imaging, that comprise the standard of care. The scan will require them to lie prone for less than 10 minutes with their breast pendant in an ergonomically-fitted bowl with a thin layer of a coupling fluid (similar to hand moisture in consistency) applied to the surface of the breast.

While there is no direct benefit nor detrimental effect from this study to the patients participating, the study has large implications for many women.

This study will allow the investigators to test the feasibility of this highly innovating approach to breast cancer, with minimal negative effects or possible complications. This diagnostic modality could prove to be a major step forwards in cancer detection, initially as a complementary source of information that can increase confidence in results obtained from established technologies that are routinely deployed in the clinic.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 994
Est. completion date December 1, 2018
Est. primary completion date November 1, 2018
Accepts healthy volunteers No
Gender Female
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Attending a symptomatic breast care clinic OR Patients who have a diagnosed or suspected breast cancer (P5/M5/U5/B5).

- Female sex

- 18 years or older.

- Able to provide informed consent.

- Not in any identified, vulnerable group.

Exclusion Criteria:

- Unable to mount MARIA™ patient bed using provided 2-step

- Unable to lie in the prone position

- Patients who have undergone biopsy less than 5 days before the MARIA™ scan

- Patients with implanted electronics.

- Patients with breast implants.

- Patients with nipple piercings (unless they are removed prior to the MARIA™ scan)

- Breast sizes smaller than 197ml or greater than 1L in volume

Study Design


Related Conditions & MeSH terms


Intervention

Diagnostic Test:
MARIA scan
The patient will have an additional MARIA scan along with conventional imaging, pathology and surgical procedures.

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
Royal Marsden NHS Foundation Trust Micrima, Ltd.

References & Publications (2)

Preece AW, Craddock I, Shere M, Jones L, Winton HL. MARIA M4: clinical evaluation of a prototype ultrawideband radar scanner for breast cancer detection. J Med Imaging (Bellingham). 2016 Jul;3(3):033502. doi: 10.1117/1.JMI.3.3.033502. Epub 2016 Jul 20. — View Citation

Saadatmand S, Bretveld R, Siesling S, Tilanus-Linthorst MM. Influence of tumour stage at breast cancer detection on survival in modern times: population based study in 173,797 patients. BMJ. 2015 Oct 6;351:h4901. doi: 10.1136/bmj.h4901. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Proportion of patients with breast cancer in whom breast cancer is correctly identified by MARIA Comparison to histopathology result 1 week (after histopathology result)
Primary Sensitivity and specificity of MARIA for a range of findings to include, simple cysts, fibroadenomata, and malignant lesions. As judged against the final diagnosis at discharge, which may be based on clinical findings, imaging and pathology data. Comparison with clinical, radiology and pathology findings Through study completion, an average of 1 year
Primary Proportion of post-operative patients treated with neo-adjuvant chemotherapy or endocrine therapy, correctly identified by MARIA with complete response or residual disease, as compared to surgical histology. Comparison of response to surgical histology Through study completion, an average of 1 year
Secondary Compare the detection of breast cancer from MARIA with the detection from mammography by the sub-group of histology type. Comparison to Mammography and Pathology result Through study completion, an average of 1 year
Secondary Compare the detection of breast cancer from MARIA with the detection from mammography by sub-group of mammographic density. Comparison to Mammography and Pathology result Through study completion, an average of 1 year
Secondary Compare the detection of breast cancer from MARIA with the detection from mammography in the overall patient group. Comparison to Mammography and Pathology result Through study completion, an average of 1 year
Secondary Assessment of data repeatability (test re-test) of MARIA assessment results on patients with diagnostic follow-up imaging. Comparison with prior MARIA scan when returning for further imaging After attendance for further imaging, at 1-2 weeks.
Secondary Investigate the performance of MARIA in the estimation of residual tumour size compared to the final surgical histology results in the case of patients receiving neo-adjuvant chemotherapy or endocrine therapy. The correlation between the pathological features of the lesion and the imaging features as determined from MARIA including presence of features, shape and size. Through study completion, an average of 1 year
Secondary Patient tolerance of MARIA (a non-compressing, non-ionising modality) Questionnaire measurement, Quantitative answers. Through study completion, an average of 1 year
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