The MRI pictures included T1WI, T2WI and STIR sequence scanning. Results:Strip high signals with long T1, long T2 abnormal signal behind lumbar vertebra were showed in 31 cases. The STIR sequence was more obvious, more intuitive to display lumbosacral superficial fasciitis, while the abnormal ...
磁共振STIR脉冲序列成像在臂丛神经中的应用 大连医科大学附属第一医院放射科大连 116011 宁殿秀孙美玉李智勇刘爱连伍建林郎志谨 臂丛神经损伤在创伤中较为常见,且致残率较高,大多需采用手术治疗u3。如何直接、 有效地显示臂丛神经损伤的部位及程度,一直是影像学研究的难题。MRJ因其优异的软组 织分辨力,是评价臂丛神经解剖...
MRI Short Tau Inversion Recovery (STIR) signal intensity, amyotrophy, and muscle fatty infiltration measured after T1-weighted image acquisition, EMG spontaneous activity (SA), and maximal voluntary contraction (MVC) were graded using semiquantitative scores and quantitative scores for STIR signal ...
STIR stands for Short-TI Inversion Recovery and is typically used to null the signal from fat. At 1.5T fat has a T1 value of approximately 260 ms, so its TInull value is approximately 0.69 x 250 = 180 ms. The optimal value is often slightly less than this for two reasons: 1) ...
(5) SPIR/SPAIR sequences have higher signal-to-noise than STIR.Difference (2) above bears special emphasis and elaboration. STIR sequences result in a nonselective suppression of fat as well as other tissues with short T1 values. STIR will tend to hide gadolinium enhancement (since gadolinium...
中文摘要 序列R疠变/眶脂体(双侧P均小于0.05); 3、脉络膜相关病变观察和分析结果:主观评价结果:STIR.FLAIR序列伪影较 与周围关系”的评价效能高于T2W.SPIR序列(双侧P均小于O.05)。客观评价结果: 序列Sn病变与Sn玻璃体均高于S。眶膳体(双侧尸值均小于0.05),Sn病灶与S。玻璃体无统计学差 侧P0.05); R异常眼...
that metallic and movement artifacts can cause severe impairment of diagnostic quality in the applied sequence protocol reducing the number of included patients. Last, the retrospective nature of this study did not allow for correlation of pathological signal alterations in the MRI with supposedly negati...
The synthetic model was trained 100 times, and the performance of the model was evaluated with five-fold cross-validation.Results: As for quantitative validation, the structural similarity score was 0.519卤0.1 and the peak signal-to-...
The signal intensity of the benign and malign lymph nodes, normal esophagus, and pathologic esophagus can be calculated on STIR sequence.ResultsPathologically, the number of total lymph nodes in 35 operated cases was 482. Approximately 152 lymph nodes were detected with MR imaging. Of these, 28 ...
在我院就诊的肺结节患者中选取120例,所有患者均行MRI检查以及病理检测。测定 肺结节信号强度评分、ADC值、SNR值。结果 120例肺结节患者中,良性结节41例,恶性结节79例。良性 与恶性肺结节信号强度评分、ADC值、SNR值之间均有显著差异(P<0.05)。结论 STIR-EPI序列可作为肺 ...