螺旋

Objective To assess the clinical value of multi-slice CT angiography in the arteriosclerotic occlusive disease of lower limb.

目的探讨下肢动脉硬化闭塞症的多排螺旋CT血管成像的诊断价值。

Objective To discuss the application value of 16-slice spiral CT in lower extremity angiography diagnosis of arteriosclerotic occlusive disease.

目的：探讨16层螺旋CT下肢血管成像技术诊断下肢动脉硬化性闭塞症的应用价值。

Objective To explore the value of curvature plane reconstruction with multislice spiral CT in the diagnosis of lumbar vertebral arthrosis.

目的 探讨多层螺旋CT曲面重建成像在诊断腰椎小关节病中的应用价值。

Methods 33 patients were scanned by helical CT.The virtual endoscopy images of all patients were compared with that of actual laryngoscopy and the surgical results (5 normal larynx,19 laryngeal carcinomas,5 glottic and arytenoid polyps,4 papillary adenoma).

方法对 5名健康者、19例喉癌、5例声带及披裂息肉、4例乳头状瘤共 3 3例患者，行螺旋CT扫描后经软件处理获得CT仿真喉镜图像，所有病例均与纤维喉镜和手术所见对照分析。

Objective To study the ascendancy in the diagnoses and imaging features of MSCT in patients with lymphangioma.

目的 探讨多层螺旋CT在淋巴管瘤诊断中的应用优势及影像特征。

Results: In 40 patients with rectum or colon carcinoma proven by pathology, there were 6 cases with cecum carcinomas, 3 cases with ascending colon carcinomas, 3 cases with transverse colon carcinomas, 5 cases with descending colon carcinomas, 1 case with-sigmoid colon carcinomas and 22 cases with rectum carcinomas.

结果：病理证实结直肠癌40例（其中盲肠癌6例，升结肠癌3例，横结肠癌3例，降结肠癌5例，乙状结肠癌1例，直肠癌22例），多层螺旋CT检出了全部结直肠癌，敏感性为100%，总的分期准确率为80%(32/40)，B期分期准确率为83.3%(15/l8)，C期分期准确率为66.7%(8/12)，肿瘤浆膜外侵犯的敏感性和特异性分别为95%(36/34)和50%(2/4)，淋巴结转移的敏感性和特异性分别为60%(12/20)和90%(9/10)。

The results show that all the hmgr genes from pigs, cattle and chickens are astable enzyme proteins with the same gene sequence characteristics and encoding protein and physical and chemical properties; all the amino acid sequences have a high degree of homology, containing two conservative HMG-CoA binding motifs and two NADPH binding motifs; all the amino acid sequences, containing signal peptide, are secreted proteins; they are all hydrophobic transmembrane proteins with five transmembrane domains; random coil and α-helix are the main structural elements in the HMGR polypeptide chain; all the predictions of three-dimensional structure are V- shaped; there are more closer evolution relationship between the HMGR gene from pigs and cattle.

结果表明：猪、牛和鸡HMGR基因序列特点及编码蛋白质理化性质基本相同，均属不稳定类酶蛋白；保守结构域氨基酸序列具有高度的同源性，均含有保守的2个β-羟基-β-甲基戊二酸单酰辅酶A结合基序和2个还原性烟酰胺腺嘌呤二核苷酸结合基序；均有信号肽，属分泌型蛋白质；属于跨膜的疏水性蛋白，均有5个跨膜结构域；无规则卷曲和α-螺旋是HMGR多肽链中的主要结构元件；三维结构预测都呈"V"字形；猪和牛HMGR基因的进化关系最近。

In this thesis, CAD formulas are obtained by synthetic asymptote for three structures, from simple to complicate. The top layer is assumed very thin for all three structures.

通过"自展"，可以从简单结构的CAD公式推出较复杂结构的CAD公式，如本文中可以从简单的贴片电容公式出发最终推出较复杂的螺旋电感公式。

The spiral model of development includes explicit consideration of risks at all stages of the lifecycle.

螺旋模型在生命周期的各阶段都包括的明确的关于风险的考虑事项。

Objective To explore the value of spiral CT in the diagnosis of atypical pulmonary nodules.

目的探讨螺旋CT在非典型肺结节诊断中的应用价值。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。