本文選題：磁場均勻性 + 磁共振波譜　； 參考：《中國醫(yī)學影像技術(shù)》2017年11期

【摘要】：目的探討MRI設(shè)備磁場均勻性評估方法與實踐操作步驟,為臨床質(zhì)量控制提供技術(shù)參考。方法基于MRS模體和32cm的勻場球模,分別采用波譜峰值法和帶寬差值法兩種磁場均勻性檢測方法檢測本單位放射科的MRI設(shè)備。結(jié)果 MRS模體的半高寬值為0.08ppm,32cm勻場球模在帶寬差值法下單層冠狀位,矢狀位和軸位的磁場不均勻值分別為0.15ppm、0.08ppm和0.18ppm。結(jié)論所檢測MRI設(shè)備磁場均勻性良好,符合磁場均勻性檢測標準。
[Abstract]:Objective to evaluate the magnetic field uniformity of MRI equipment and to provide technical reference for clinical quality control. Methods based on the uniform spherical mode of MRS motif and 32cm, two magnetic field homogeneity detection methods, peak spectral method and bandwidth difference method, were used to detect the MRI equipment in radiology department of our unit. Results the half-maximum width of the MRS motif was 0.08 ppm ~ (32 cm) and the magnetic field inhomogeneity values of sagittal and axial positions were 0.15 ppm and 0.18 ppm, respectively, in the single-layer coronal position under the bandwidth difference method. Conclusion the magnetic field uniformity of the MRI equipment is good and accords with the standard of magnetic field uniformity.
【作者單位】： 首都醫(yī)科大學附屬北京友誼醫(yī)院放射科;中國計量大學信息工程學院;
【基金】：國家重點研發(fā)計劃數(shù)字診療裝備研發(fā)重點專項(2016YFC0106901) 科技北京百名領(lǐng)軍人才培養(yǎng)工程(Z141107001514002) 北京市醫(yī)管局“使命”人才計劃(SML20150101) 北京學者(京人社專家發(fā)[2015]160號)
【分類號】：R445.2
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本文編號：1900911