Novel MRI Sequence MR Fingerprinting in Breast MRI Feasibility Study

Study Overview
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Brief Summary
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The purpose of this study is to evaluate potential clinical efficacy of a novel magnetic resonance imaging (MRI) approach, MR fingerprinting, capable of providing quantitative measures of important tissue properties, which could provide important insights into normal breast tissue. This new MRI sequence will be added to the screening breast Dynamic Contrast Enhanced (DCE) MRI for high risk normal patients.

Detailed Description
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This is a feasibility study of the use of the additional MR fingerprinting (MRF) scanning sequence with a total of 12 minutes scanning time to our clinical screening breast DCE MRI examination before contrast medium injection and at the end of scan. This additional scanning sequence may provide faster and better quantitative tissue characterization comparing to conventional MR sequences. There is no investigational contrast agent in this study. We propose that the additional MRF sequence may provide faster and more accurate tissue characteristics imaging for clinical evaluation of breast tissue. Patients will be enrolled in with scheduled high risk screening DCE MRI (n=30). The MR imaging will be performed in the clinical 1.5T MR scanners in UNC as normally done for the patients MRI schedule. We only add an additional MRF sequence within the MRI exam just prior to the contrast enhancement scan. Quantitative measurement of the breast tissue will be performed after the MR exam. The region-of-interest (ROI) of normal breast parenchyma was recorded. The ROI will be saved and encoded to the T1 map, T2 map in MRF, T1 weighted imaging, T2 weighted imaging. A large variety of imaging ROI-based quantitative measures will be calculated among normal glands in bilateral breasts to evaluate different ROI characteristics among different patients and between bilateral breasts in each patient.

Official Title
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Novel MRI Sequence MR Fingerprinting in Breast MRI Feasibility Study

Conditions
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Breast Screening

Intervention / Treatment
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* Device: MR Fingerprinting


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: English-speaking patients Ages 18 to 99 years old Scheduled to undergo a screening breast MRI study Capable and willing to provide signed informed consent Exclusion Criteria: Claustrophobia Presence of pacemaker, intracranial aneurysm clip, bladder stimulator, cochlear implant or metal near eyes or near pelvis that would create excessive imaging artifact Known hypersensitivity to contrast agent or to any component of contrast agent refractory to standard medications (antihistamines, steroids) Impaired kidney function (serum creatinine level > 1.8 mg/dl or a glomerular filtration rate < 60 as approximated using serum creatinine levels) unless anuric and on dialysis. Inability to tolerate MRI (e.g., inability to lie flat for >1 hour) Pregnancy or lactating female Previous history of mastectomy or lumpectomy Breast enhancements (i.e. implants)

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 99 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: All participants<br>All participants will receive the investigational MR Fingerprinting sequence. | Device: MR Fingerprinting<br>* The MR fingerprinting technique requires less than 15 minutes total and will be added before and after the standard MRI sequence.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Ratio of Intensity Score of Normal Breast Tissue for Left Breast Tissue Compared to Right for T1 Imaging Sequence | The normal breast tissue intensity value from the MRI will be used to compare between sides in same patient in the T1 sequence. The ratio of the left intensity score to the right intensity score will be averaged. The intensity value is a quantitative measurements of T1 relaxation time, an intrinsic magnetic tissue property that is correlated with a variety of pathological conditions. | during MRI, approximately 1 hour | 
| Ratio of Intensity Score of Normal Breast Tissue for Left Breast Tissue Compared to Right for T2 Imaging Sequence | The normal breast tissue intensity value from the MRI will be used to compare between sides in same patient in the T2 sequence. The ratio of the left intensity score to the right intensity score will be averaged. The intensity value is a quantitative measurements of T2 relaxation time, an intrinsic magnetic tissue property that is correlated with a variety of pathological conditions. | during MRI, approximately 1 hour | 
| Ratio of Intensity Score of Normal Breast Tissue for Left Breast Tissue Compared to Right for the Investigational (MRF) Imaging Sequence | The normal breast tissue intensity value from the MRI will be used to compare between sides in same patient in the investigational (MRF) sequence. The ratio of the left intensity score to the right intensity score will be averaged. The intensity value is a quantitative measurements of MRF relaxation time. | during MRI, approximately 1 hour |