Investigation of Diagnostic Improvement Gained Through Optimization of MR Methods for Breast Cancer Detection (BCD)

October 17, 2017 updated by: University of Texas Southwestern Medical Center
In a single MRI exam on a research scanner, each lesion will be categorized using the BI-RADS MRI score, which utilizes the DCE data alone, and then again using a modified BI-RADS score, which utilizes both DWI and DCE data. The sensitivity and specificity of each approach will be determined using pathology as the gold standard.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

MR examinations will be performed on a 3.0 Tesla GE whole-body scanner using an elliptically driven body coil for transmit and a multi-channel bilateral breast coil for receive. The multi-channel coil will consist of 8, 16 or 31 channels. DCE-MRI: DCE-MRI will be carried out using a three-dimensional (3D) turbo fast lowangle gradient echo sequence (TFE) combined with parallel acquisition Sensitivity Encoding (SENSE) technique. The imaging plane will be set in axial plane so that both breasts are included in the images. One image will be acquired before and four images will be acquired after intravenous administration of a standard dose of 0.1 mmol per kg of body weight of Gadavist (Schering AG, Germany) at a rate of 3ml/sec. with subjects in the prone position, breathing normally during the scan. The total scan time for the DCEMRI will be about 8 minutes.

Pharmacokinetic parameters, including the volume transfer constant Ktrans, the fractional volume of extravascular extracellular space of the target tissue ve, and the rate constant kep, will be estimated by fitting a pharmacokinetic model to the time-intensity curves obtained from the DCE-MRI. In this study, the concentration of tracer Ct(t) after bolus injection is assumed to obey the model proposed by Tofts and Kermode (20). DWI-MRI examinations: The DWI acquisition will occur before and/or after contrast enhancement used in DCE imaging. Immediately after the completion of imaging with the 16 (or 31) channel breast coil, the patient will be repositioned replacing the breast coil with an 8 channel breast coil and additional DWI acquisitions will be made. Data for apparent diffusion coefficient assessment on diffusion-weighted imaging will be acquired using a single-shot Echo Planar Imaging sequence in the transverse plane. The DWI protocol will acquire images with up to 16 different b values. Slice dependent shimming will be performed to provide the maximum B0 homogeneity for each slice. The total scan time for the DWI-MRI will be about 5 minutes.

All of the DWI image data from the MRI examinations will be stored on a dedicated HIPPA compliant computer workstation (located in room NE6.114) for analysis. The relevant parameters will be mean ADC and the histogram of ADC in the lesions.

Conductivity imaging: A B1 map and a spin echo image will be acquired for measuring tissue conductivity (21).

The images used for conductivity measurement will be anonymized and sent to the manufacturer for further development of post-processing techniques.

Study Type

Observational

Enrollment (Actual)

60

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Texas
      • Dallas, Texas, United States, 75390
        • UT Southwestern Medical Center - Advanced Imaging Research Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

Patients from the UTSW Breast Imaging Center referred for breast biopsy due to suspicious mammography or ultrasound exams (SOC) with Breast Imaging-Reporting and Data System (BI-RADS) 4 or 5.

Description

Inclusion Criteria:

Women with Breast Imaging-Reporting and Data System (BI-RADS) 4 or 5 Age ≥ 18 years Ability to understand and the willingness to sign a written informed consent.

Exclusion Criteria:

Subjects who have had a needle biopsy of the suspicious area within the last 6 weeks Subjects who have contraindication to contrast enhanced MRI examination.

Contraindications to MRI examinations include:

Medically unstable

  • Heart failure
  • Unstable angina
  • Child bearing
  • Lactating Any contraindication per MRI Screening Form (Appendix A attached).
  • Implants contraindicated at 3T, pacemakers
  • Poorly controlled diabetes
  • Body weight greater than 300 pounds
  • Claustrophobic Since each patient is receiving a gadolinium based contrast agent intravenously:
  • eGFR < 60 mL/min/1.73m2
  • Sickle cell disease
  • Hemolytic anemia

Subjects must not be pregnant or nursing due to the potential for gadolinium contrast agents to harm fetuses or nursing infants.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Diagnostic Improvement Gained using an optimized MR Method for Breast Cancer Detection.
Time Frame: Each of 60 patients will have 1 60 minute scan prior to biopsy
The sensitivity and specificity of breast cancer detection using ADC maps acquired with a 31 channel breast coil and improved B0 shimming will be compared to the sensitivity and specificity of cancer detection using DCE MRI.
Each of 60 patients will have 1 60 minute scan prior to biopsy

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Texas Southwestern Medical Center

Investigators

  • Principal Investigator: Robert Lenkinski, MD, UT Southwestern Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2014

Primary Completion (Actual)

May 1, 2017

Study Completion (Actual)

May 1, 2017

Study Registration Dates

First Submitted

February 27, 2015

First Submitted That Met QC Criteria

April 3, 2015

First Posted (Estimate)

April 8, 2015

Study Record Updates

Last Update Posted (Actual)

October 19, 2017

Last Update Submitted That Met QC Criteria

October 17, 2017

Last Verified

October 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • STU 052014-042

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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