qMRI乳腺成像模體，美國QalibreMD qMRI定量核磁共振乳腺模體詳細(xì)介紹：

qMRI乳腺成模體，美國QalibreMD qMRI定量核磁共振乳腺模體 - 專為MRI執(zhí)行定量乳房成像而設(shè)計(jì)
qMRI乳腺成模體，美國QalibreMD qMRI定量核磁共振乳腺模體包括一套柔軟的硅膠外殼，具有剛性聚碳酸酯內(nèi)部結(jié)構(gòu)。每個(gè)充滿大量溶液以模擬纖維腺體組織T1。一種乳房標(biāo)準(zhǔn)是各種乳房組織的專用T1mimic，另一種是擴(kuò)散模擬標(biāo)準(zhǔn)。乳房標(biāo)準(zhǔn)可以適用于大多數(shù)乳腺成像檢測(cè)線圈。所有組件都可溯源到NIST，為MRI掃描儀和乳房線圈以及成像協(xié)議和程序提供準(zhǔn)確的標(biāo)準(zhǔn)化。

對(duì)應(yīng)的型號(hào)為：HPD BP131
qMRI乳腺成模體，美國QalibreMD qMRI定量核磁共振乳腺模體主要特征
T1放松模仿：

4層交替纖維腺體和脂肪模擬物與T1擴(kuò)散（100ms-1900ms）

充滿纖維腺體T1的12個(gè)球體被大塊脂肪模擬物包圍

充滿脂肪模擬物的12個(gè)球體被大塊纖維狀腺體模擬物包圍



qMRI乳腺成模體，美國QalibreMD qMRI定量核磁共振乳腺模體擴(kuò)散模擬：

12個(gè)管充滿0,10,25或40％PVP水溶液以模擬擴(kuò)散

4管充滿脂肪模仿

散裝溶液是纖維腺體T1模擬物



 

qMRI乳腺成模體，美國QalibreMD qMRI定量核磁共振乳腺模體評(píng)估以下參數(shù)：

B1不均勻

B0不一致

幾何線性

梯度幅度

系統(tǒng)中心頻率漂移（短時(shí)間持續(xù)時(shí)間）

分辨率（高對(duì)比度可檢測(cè)性）

SNR（低對(duì)比度可檢測(cè)性）

T1和T2測(cè)量的精度和精度

表觀擴(kuò)散系數(shù)的精度和精度







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