Quantitative MRI (qMRI) Breast Standard-Specifically designed for MRI’s Performing Quantitative Breast Imaging The qMRI Breast Standard consists of an anthropomorphic set of pliable silicone shells with rigid polycarbonate internal structures. Each is filled with a bulk solution to mimic fibroglandular tissue T1. One breast standard is a dedicated T1mimic of the various breast tissues, and the other is a diffusion mimic standard. The Breast standard can fit into most detection coils for breast imaging. All components are traceable to NIST, providing for accurate standardization of MRI scanners and breast coils as well as imaging protocols and procedures.
Key Features T1 Relaxation Mimic:
4 layers of alternating fibroglandular and fat mimics with T1 spread (100ms-1900ms)
12 spheres filled with fibroglandular T1 surrounded by bulk fat mimic
12 spheres filled with fat mimic surrounded by bulk fibroglandular mimic
Diffusion Mimic:
12 tubes filled with 0, 10, 25 or 40% aqueous PVP solution to mimic diffusion
4 tubes filled with fat mimic
Bulk solution is fibroglandular T1 mimic
The qMRI Breast Standard evaluates the following quantities:
B1 Non-uniformity
B0 Non-uniformity
Geometric linearity
Gradient Amplitude
System Center Frequency Drift (short time duration)
Resolution (High-contrast detectability)
SNR (Low-contrast detectability)
Accuracy and precision of T1 and T2 measurements
Accuracy and precision of the Apparent Diffusion Coefficient
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