提出标准直齿圆柱齿轮轮齿表面应用单激光束螺旋扫描的处理方法。
In this paper, a method of using single laser — beam spiral scanning to treat the tooth surface of standard spur gear is proposed.
本组收集了22例螺旋扫描的颌骨病变进行三维重建，评估其在临床中的应用价值。
The three-dimensional reconstruction ct of 22 cases with the jaw bone diseases and injuries by spiral scan had been collected.
方法：本组58例周围型肺癌患者，均采用螺旋扫描，采用免疫组织化学s - P法检测肿瘤组织MMP - 2的表达。
Methods: Spiral CT scan were performed in 58 patients with peripheral lung cancer which confirmed by pathology, Expression of MMP-2 in 58 cases were examined with SP immunohistochemical techniques.
结论：多层螺旋CT螺旋扫描能为脊柱病变提供全面的诊断信息，是脊柱病变的一种比较理想的检查方法，可取代非螺旋轴位扫描。
Conclusion: MSCT can provide more information for making diagnosis. It is an ideal method for examination of spinal diseases and should replace non-spiral scan.
首先分析比较了水平行扫、螺旋扫描和分行螺旋扫描策略，并根据分析结果，结合轨迹预处理算法，设计了一种变速分行螺旋扫描策略。
Based on the trajectory preprocess arithmetic, a kind of rate-variant square spiral scan strategy is designed according to the analysis results.
NLST由国家癌症研究所(国家健康研究所的一部分)发起，证实了低剂量螺旋CT成像是第一种可以降低肺癌死亡率的扫描检查。
Sponsored by the National cancer Institute, part of the National Institutes of Health, the NLST establishes low-dose spiral CT as the first validated screening test that reduces lung cancer mortality.
方法采用螺旋CT扫描、计算机图像处理及CAD技术，建立含腭部种植体的上颌骨三维有限元模型。
Methods A three-dimensional finite element model of maxilla containing palatal implant was built using spiral CT scanning, computer image processing, and CAD technology.
结论：灵活运用螺旋ct增强扫描技术对肝脏疾病的诊断具有重要价值。
Conclusion Using enhanced spiral CT scan technology flexibly has important value in diagnosis of liver diseases.
结论螺旋CT的平扫和增强扫描是诊断主动脉夹层动脉瘤的首选和可靠的检查手段。并且能为外科手术提供更多的信息。
Conclusion Plain and enhanced spiral CT scans were the first and credible means in the diagnosis of ADA, and could offer more information for surgical operation.
方法以小型猪为肺栓塞、肺梗死实验动物模型，进行X线平片、核素灌注扫描、螺旋CT、血管造影检查。
Methods The pig experimental models of pulmonary embolism and infarction were examined by X ray, ventilation perfusion scanning, helical CT, angiography.
方法回顾性分析经x线平片、螺旋CT扫描证实的髋臼骨折患者160例影像资料。
Methods the image data from 160 patients with the acetabulum fracture, including X ray plain film and spiral ct scanning, were analyzed retrospectively.
目的：探讨胆囊癌的螺旋CT多期扫描征象。
Objective: To discuss spiral multi-phase ct scanning signs of the carcinoma of gallbladder.
提出了基于直接螺旋半扫描数据的有序子集期望最大化（OSEM）迭代重建。
This paper proposed a modified ordered subsets expectation maximization(OSEM) reconstruction based on the direct helical half-scan data.
结论螺旋CT双期扫描对原发性肝癌的诊断和鉴别诊断具有重要价值。
Conclusion Dual - phase spiral - CT have important value for the diagnosis and the differential diagnosis of the primary liver cancer.
结论螺旋CT扫描对肋软骨骨折的诊断有重要价值。
Conclusion Spiral ct has important value in the diagnosis of costal cartilage fracture.
目的评价低剂量和靶螺旋CT扫描技术在肺结节诊断中的价值。
Objective To evaluate low dose and target spiral ct scanning technique in the diagnosis of pulmonary nodules.
结论：螺旋CT多期扫描对胆囊癌的诊断有很大的价值。
Conclusion: Spiral multi-phase CT scanning is of enormous value in the diagnosis of gallbladder carcinoma.
目的：对比分析两种不同方向的肺部螺旋CT扫描的图像质量。
Objective:To evaluate the image quality of lung spiral CT scanning in two different directions.
方法对35例复杂颌面骨折患者行螺旋CT扫描后，利用工作站行图像后处理，选用多种软件技术进行三维重建。
Methods 35 patients with complex maxillofacial fracture were scanned by spiral CT and then the images were taken three-dimensional reconstruction on work-station using different softwares.
前言：目的：分析肝转移瘤三期螺旋CT扫描的影像表现，并评价其诊断价值。
Objective: To evaluate the manifestations of liver metastasis by spiral ct with three-phase scanning.
目的：探讨螺旋CT扫描对输尿管结石的诊断价值及合理应用。
Objective To study the diagnostic value and reasonable use for ureteral calculus with helical ct scanning.
目的探讨螺旋CT后处理技术对肺癌的诊断价值及肺癌的螺旋CT扫描方案。
ObjectivesTo evaluate the clinical significance of spiral ct post processing technique (SCTPPT) in the diagnosis of lung cancer and propose its spiral ct scanning project.
肺动脉栓塞；螺旋CT；增强扫描；诊断。
结果所有病例经螺旋CT扫描及重建均能显示骨折。
Results In all patients, the scanning of spiral CT and reconstruction showed the bone fracture.
材料和方法：回顾性分析经手术、病理证实的11例小肠间质瘤的多层螺旋CT平扫和双期增强扫描及3D-CTA表现。
Materials and Methods:Both plain, dual-phase contrast enhanced MSCT and 3D-MSCTA were performed for 11 cases with pathologically proved stromal tumors in small intestine.
目的：分析螺旋CT扫描在小儿癫痫诊断中的应用价值。
Objective:To study the value of CT diagnosis of infantile epilepsy.
结论FNH在螺旋CT扫描上表现具有特征性，螺旋ct诊断fnh具有重要价值。
Conclusion Helical ct demonstrates characteristic features of FNH, it is of great value in diagnosing FNH.
目的探讨螺旋ct增强扫描对卵巢囊腺瘤与囊腺癌的诊断价值。
Objective To discuss the contrast enhanced spiral ct diagnostic value in the ovarian cystadenoma and cystadenocarcinoma.
结论：应用螺旋CT扫描、MIP及3d - SSD对未钙化肋软骨骨折的诊断有着重要临床价值。
Conclusion: Spiral ct associated with MIP and 3d-ssd reconstruction have important clinical value in the diagnosis of traumatic fracture of non-calcified costal cartilage.
目的：评价高分辨螺旋ct增强扫描诊断肺内孤立小结节的价值。
Purpose: To evaluate the diagnostic value of high resolution enhanced spiral CT in small pulmonary solitary nodules (SPNs).
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