CClinicalTrials.gg
CompletedNCT02364388MAESTROUpdated Apr 6, 2020Results posted

IMAging With Opto-acoustics to downgradE BI-RADS claSsificaTion Relative tO Other Diagnostic Methodologies (MAESTRO)

An interventional study of Imagio IUS and Imagio OA/US in Breast Cancer, sponsored by Seno Medical Instruments Inc.. Completed at 5 sites in Netherlands. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-04-06.

Sponsored by Seno Medical Instruments Inc. · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
217
Allocation
Non-randomized
Ages
18 Years and older
Sex
Female
01

Study summary

Imagio breast imaging system, is an opto-acoustic (OA) imaging system designed to concurrently collect images in conjunction with diagnostic ultrasound ( co-registered OA and B-mode imaging). This medical device has CE-marking and is approved for use in Europe and other nations.

This is a post-market, non-randomized multi-center surveillance study.

Read the detailed description

This is a post-market surveillance study that is prospective, controlled, multi-center, to evaluate if Imagio OA can downgrade BI-RADS ( Breast Imaging-Reporting and Data System) classification following CDU (Conventional Diagnostic Ultrasound) for the visualization and characterization of suspicious masses prior to core needle biopsy (CNB) or excision. Investigators will perform CDU to reach a diagnosis and decision to biopsy. Imagio OA will not be used as the reason to perform or to defer a CNB (Core Needle Biopsy) or excision.

02

Conditions studied

  • Breast Cancer

Keywords

  • breast imaging diagnosis
  • breast ultrasound
  • Imagio
  • Seno Medical Instruments, Inc.
  • Seno
  • opto-acoustics
  • OA
03

In context

Lead sponsor

Seno Medical Instruments Inc. is the lead sponsor of 9 studies on the registry; none are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 4 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Female
  • 18 years of age or older
  • Have an undiagnosed suspicious finding which may include more than one solid or complex cystic suspicious mass, classified by CDU as BI-RADS 4a or 4b within 3 weeks of their baseline Imagio Scan

Exclusion criteria

Exclusion Criteria:

  • Have a condition or impediment that could interfere with the intended field of view (within one probe length or 4 cm of the mass), (i.e., breast implants within the previous 12 months, or tattoos)
  • Pregnant or lactating
  • Patient has received chemotherapy for any type of cancer within 90 days from date of screening CDU
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
217 participants (actual)

Study arms

  • Active comparator
    Imagio IUS gray-scale ultrasound

    Imagio gray-scale ultrasound

    Device: Imagio IUS · Device: Imagio OA/US

  • Other
    Imagio OA/US

    Imagio OA/US (opto-acoustic+gray-scale ultrasound)

    Device: Imagio IUS · Device: Imagio OA/US

Interventions

  • DeviceImagio IUS

    Imagio diagnostic gray-scale ultrasound

    Also known as: gray-scale ultrasound

  • DeviceImagio OA/US

    Diagnostic opto-acoustic +gray-scale ultrasound

    Also known as: Imagio opto-acoustic + gray-scale ultrasound

06

What researchers measure

Primary outcomes

  1. OA/US Specificity (Downgrade (%) for BI-RADS 4A & 4B) of Benign Masses

    Outcome is the percentage of benign masses correctly downgraded by (OA/US) ultrasonography from a suspicious abnormality (4A or 4B) to benign or probably benign (BI-RADS 2 or 3). BI-RADS is the Breast Imaging Reporting and Data System established the American College of Radiology. BI-RADS scores range from 0 to 6, with increase in score indicating an increase in the probability of malignancy. A BI-RADS score of 4 or more indicates the need for biopsy. Specificity is reported with a 96% confidence interval using a normal approximation.

    Time frame: CDU images and decision to biopsy to be done at Screening. OA/US imaging to be done within 10 days of Screening. Biopsy to be done within 30 days of Screening.

  2. OA/US Sensitivity (Upgrade (%) for BI-RADS 4A & 4B) of Malignant Masses

    Outcome is the percentage of malignant masses correctly identified by (OA/US) ultrasonography as BI-RADS 4a or higher. BI-RADS is the Breast Imaging Reporting and Data System established the American College of Radiology. BI-RADS scores range from 0 to 6, with increase in score indicating an increase in the probability of malignancy. A BI-RADS score of 4 or more indicates the need for biopsy. Sensitivity is reported with a 96% confidence interval using a normal approximation.

    Time frame: CDU images and decision to biopsy to be done at Screening. OA/US imaging to be done within 10 days of Screening. Biopsy to be done within 30 days of Screening.

07

Results

Posted Apr 6, 2020

Participant flow

Prospective Enrollment from 5 Sites in the Netherlands

Participant flow — Overall Study
MilestoneImagio OA/US
Started217
Biopsied209
Excluded8
Completed209
Not completed8
Withdrew: Protocol violation1
Withdrew: Technical failure3
Withdrew: No oa/us data2
Withdrew: No biopsy2

Outcome measures

PrimaryOA/US Specificity (Downgrade (%) for BI-RADS 4A & 4B) of Benign Masses

Outcome is the percentage of benign masses correctly downgraded by (OA/US) ultrasonography from a suspicious abnormality (4A or 4B) to benign or probably benign (BI-RADS 2 or 3). BI-RADS is the Breast Imaging Reporting and Data System established the American College of Radiology. BI-RADS scores range from 0 to 6, with increase in score indicating an increase in the probability of malignancy. A BI-RADS score of 4 or more indicates the need for biopsy. Specificity is reported with a 96% confidence interval using a normal approximation.

Time frame:
CDU images and decision to biopsy to be done at Screening. OA/US imaging to be done within 10 days of Screening. Biopsy to be done within 30 days of Screening.
Reported as:
Mean · percentage of masses
OA/US Specificity (Downgrade (%) for BI-RADS 4A & 4B) of Benign Masses
percentage of massesMAESTRO
OA/US Specificity (Downgrade (%) for BI-RADS 4A & 4B) of Benign Masses41.1 (33.1 to 49.6)
PrimaryOA/US Sensitivity (Upgrade (%) for BI-RADS 4A & 4B) of Malignant Masses

Outcome is the percentage of malignant masses correctly identified by (OA/US) ultrasonography as BI-RADS 4a or higher. BI-RADS is the Breast Imaging Reporting and Data System established the American College of Radiology. BI-RADS scores range from 0 to 6, with increase in score indicating an increase in the probability of malignancy. A BI-RADS score of 4 or more indicates the need for biopsy. Sensitivity is reported with a 96% confidence interval using a normal approximation.

Time frame:
CDU images and decision to biopsy to be done at Screening. OA/US imaging to be done within 10 days of Screening. Biopsy to be done within 30 days of Screening.
Reported as:
Mean · percentage of masses
OA/US Sensitivity (Upgrade (%) for BI-RADS 4A & 4B) of Malignant Masses
percentage of massesMAESTRO
OA/US Sensitivity (Upgrade (%) for BI-RADS 4A & 4B) of Malignant Masses95.5 (86.4 to 98.6)

Adverse events

Collected over Adverse event data were collected from Screening Visit through Biopsy. Biopsy was to be done within 30 days of the Screening Visit.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
MAESTRO0/217 (0%)0/217 (0%)1/217 (0.5%)
Most frequent other events
Most frequent other events
EventMAESTRO
Post procedural HaematomaInjury, poisoning and procedural complications1/217

Baseline characteristics

Intent-to-diagnose (ITD)

Age, Continuous
Age, Continuous(years)MAESTRO
Mean47.8 ± 14.9
Sex: Female, Male
Sex: Female, Male(Participants)MAESTRO
Female209
Male0
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)MAESTRO
Hispanic or Latino6
Not Hispanic or Latino203
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)MAESTRO
American Indian or Alaska Native0
Asian4
Native Hawaiian or Other Pacific Islander0
Black or African American2
White202
More than one race1
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(Participants)MAESTRO
Netherlands209
Number of Masses
Number of Masses(Number of masses)MAESTRO
Benign masses (3 participants had 2 masses)146
Malignant masses (3 participants had 2 masses)67
High-risk masses (2 masses, 2 participants)2
08

Study locations

5 sites
  • Rijnstate Hospital
    Arnhem, 6815 AD, Netherlands
  • Albert Schweitzer Hospital Dordrecht
    Dordrecht, Netherlands
  • Zorggroep Twente
    Hengelo, 7555 DL, Netherlands
  • Radboud University Nijmegen Medical Centre
    Nijmegen, 6500 HB, Netherlands
  • University Medical Center Utrecht
    Utrecht, 3508 GA, Netherlands
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 6, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02364388
Lead sponsor
Seno Medical Instruments Inc.
Responsible party
Sponsor
First posted
Feb 18, 2015
Start date
Mar 27, 2015
Primary completion
Feb 15, 2016
Completion
Feb 15, 2016
Results posted
Apr 6, 2020
Last update
Apr 6, 2020

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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