钙化

Results The main histopathologic changes were:① experimental group: inflammatory cell infiltration (1W); inflammatory cell disappearance, fibroblast and capillary tachyauxesis, osteoid tissue and small amount neoformative bone tissue appearance (2 W); fibrous tissue decrease, neoformative bone tissue enlarging and maturity (1～3 M).

结果① 实验组：术后1周，骨缺损区周围有炎性细胞浸润，可见牙槽骨变性坏死；术后2周，炎性渗出明显吸收，成纤维细胞、毛细血管生长活跃，可见骨样组织和少量骨组织；术后1～3个月，新生骨组织范围扩大，钙化程度加强。

Results Ureteral calculuses were showed as high density image in CT scanning.The CT values of the ureteral calculuses less than 7.5mm in diameter were beyond 83HU.The detection rate by CT was 96.3%.In all the 82 cases,ureteral with calculuses were found dilated and 69 cases with nephrohydrosis.

结果 输尿管膀胱入口处结石具有特征性的CT表现，即圆形或枣核状钙化高密度影，结石直径＜7.5mm，CT值≥83HU，CT确诊率96.3%。82例均发现病侧输尿管增粗，69例发现病侧肾盂少量积水，肾盂未见积水的输尿管膀胱入口处结石13例，其结石直径＜3.8mm。

The CT values of the ureteral calculuses less than 7.5mm in diameter were beyond 83HU.The detection rate by CT was 96.3%.In all the 82 cases,ureteral with calculuses were found dilated and 69 cases with nephrohydrosis.In 13 cases with no nephrohydrosis,caculuses less than 3.8 mm in diameter were found.

结果 输尿管膀胱入口处结石具有特征性的CT表现，即圆形或枣核状钙化高密度影，结石直径＜7.5mm，CT值≥83HU，CT确诊率96.3%。82例均发现病侧输尿管增粗，69例发现病侧肾盂少量积水，肾盂未见积水的输尿管膀胱入口处结石13例，其结石直径＜3.8mm。

objective to study the ct diagnosis of ureteral calculus at the distal end of ureter.methods 82 cases of ureteral caculus were examined by ct scanning.all cases were proved by clinical therapeutic results.results ureteral calculuses were showed as high density image in ct scanning.the ct values of the ureteral calculuses less than 7.5mm in diameter were beyond 83hu.the detection rate by ct was 96.3%.in all the 82 cases,ureteral with calculuses were found dilated and 69 cases with nephrohydrosis.in 13 cases with no nephrohydrosis,caculuses less than 3.8 mm in diameter were found.conclusion ct is the most valuable way to diagnose ureteral calculus at the lower end of ureter.appropriate methods of ct scanning are essential.

目的 回顾性分析输尿管膀胱入口处结石的ct诊断结果，评价其ct检查的临床应用价值。方法分析82例输尿管膀胱入口处结石的ct检查结果，所有病例均经尿道排石证实。结果输尿管膀胱入口处结石具有特征性的ct表现，即圆形或枣核状钙化高密度影，结石直径＜7.5mm，ct值≥83hu，ct确诊率96.3%。82例均发现病侧输尿管增粗，69例发现病侧肾盂少量积水，肾盂未见积水的输尿管膀胱入口处结石13例，其结石直径＜3.8mm。结论 ct检查输尿管膀胱入口处结石具有准确、无创、直观等优点，是诊断输尿管膀胱入口处结石不可替代的检查方法。

Objective To evaluate the value of single-location dynamic CT of noncalcified pulmonary carcinoma.

目的 评价同层动态CT增强扫描技术对非钙化性肺癌结节的诊断作用。

Their screening program using low-dose spiral CT in 7,956 individuals detected 2,865 noncalcified solitary pulmonary nodules at least 8 mm in diameter.

他们的筛查专案利用低剂量螺旋CT，在7，956个体中，检测到了2，865个直径至少8 mm单独非钙化的肺部结节。

Single-location enhancement is of great importance in differentiating benign and malignant pulmonary nodules, especially in noncalcified pulmonary carcinoma and tuberculoma. It can improve the accuracy of diagnose of pulmonary carcinoma significantly.

同层动态CT增强扫描技术对良、恶性肺结节，尤其是非钙化性肺癌与肺结核瘤的鉴别诊断作用较大，可明显提高肺癌性结节的定性准确率。

The appearances of nonvascular lesions were as the following : solitary, huge cystic lesions with wall and septa obvious enhancement were found in malignant enbryonal sarcoma; mixed density mass with necrotic cystic change and solid portion enhanced obviously in carcinosarcoma; intrahepatic huge low density, cystic changes, calcification and margin enhancement were found in leiomyosarcoma.

血管源性表现为肝内多发低密度灶，强化明显，非血管源性表现为肝内巨大单发囊性病灶，增强囊壁和分隔明显强化；癌肉瘤表现为混杂密度肿块伴有坏死囊变，增强实质部分强化；平滑肌肉瘤表现为肝内巨大低密度病灶，可伴有囊变及钙化，增强见边缘强化。

In terms of pulmonary hypertrophic osteoarthropathy, Xray can only detect the periosteum hyperplasia and interosseous membrane calcification, while CT can show changes in the density of marrow cavity, MRI the abnormal signals of cortical bone and marrow cavity.

肺性肥大性骨关节病X线检查仅能发现骨膜增生和骨间膜钙化。CT检查可显示髓腔密度不均。MRI检查可显示病变累及骨皮质及骨髓腔。

Renal osteodystrophy is caused by secondary hyperparathyroidism and deficiency of 1,25-dihydroxycholecalciferol.

肾性骨营养不良是继发性甲状腺旁腺功能亢进症和1a，25-二羟胆钙化醇缺乏引起的。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。