磁共振成像温度计有望测定体温绝对值

加热被看作攻克癌症的重要武器，加热可以使癌细胞对放疗更加敏感，并且提高某些药物的治癌效果。然而阻碍热疗的关健问题是无创伤的温度监测与保热剂量需到达规定值，并防止过热，最好能大范围非侵入检测温度。美国杜克大学的科研员改进了射频脉冲研制成功磁共振成像温度计，它可以“非侵入”地测定身体内的体温，其精确度是现在最好的检测体温技术的5—10倍。     

PET/CT在评价及观察大鼠肺癌放疗效果中的应用

Objective The aim of this study was to understand the role of PET/CT in monitoring the therapeutic effect of radiotherapy (RT) on lung cancer with Wistar rats. Methods Thirty Wistar in-bred strain rats (6-8 weeks, weighed 180-280 g, female, ordinary) were made into Lewis pulmonary tumor model rats. 18F-fluorodeoxyglucose (FDG) PET/CT was performed when tumor reached 1.5-2.0 cm in greatest diameter (4-6 weeks) as a baseline. In order to get the optimal time point of PET/CT for moni-toring RT effect in rat cancer model, PET/CT was performed at the 3rd day, 1st, 2nd, 3rd, and 4th week after giving single dose of 5 Gy to each rat. Standardized uptake values (SUV) from FDG PET were measured and rats were sacrificed at different time point for validation. Besides, the expressions of glucose transport1 (Glut1) in tumor tissue were studied using immunohistochemistry. The level of tumor cell apoptosis, degra-dation, and necrosis were observed. SPSS 11.0 software was used for data analyses. Results A negative correlation of SUV uptake and time after RT and negative correlation of Glut1 expression and time after RT were observed in rat tumors, respectively. Positive correlation of SUV uptake and Glut1 expression in rat tumors was observed (Spearman rank correlation test, rs = 0.97, P < 0.01). Before RT, the SUV in rat tumor was 1.28 ± 0.31 and was decrease to 1. 00 ± 0.23 at the 3rd day and 0.18 ± 0. 10 at the 4th week after RT (F=15. 126, P<0.05). Before RT, the Glut1 in rat tumor was 0.2558 ±0.03 and was decrease to 0. 2320 ± 0. 01 at the 3rd day and 0. 1320±0.04 at the 4th week after RT. The amounts of tumor cell apopto-sis, degradation, and necrosis increased with time after RT. Conclusion Though FDG PET could monitor the therapeutic effect at the 3rd day after giving single dose of RT to rat lung tumor model, the optimal time was the the 4th week after treatment.     

肝外胆管恶性梗阻X线造影诊断

经皮肝穿刺胆管造影（以下简称PTC）是显示肝外胆管恶性梗阻直接征象的最佳方式，本文报告30例临床资料完整，肝外胆管恶性梗阻的PTC诊断。     

21世纪高场磁共振的伟大革命

2003年在MRI研发领域发生了一件大事，这年11月，诺贝尔医学奖评委会宣布，本年度的诺贝尔生理和医学奖授予了美国的保罗C·劳特伯（Paul Lauterbur和英国的皮特·曼斯菲尔德（Peter Mansfield），表彰他们对磁共振成像技术做出的杰出贡献。     

X线检查在乳腺癌诊断中的意义及作用

目的 探讨X线检查在乳腺癌诊断中的作用及意义.方法 选取2006年3月至2008年12月于笔者所在医院行乳腺检查的患者共725例,对其中最后经病理诊断确诊为乳腺癌的105例患者,进行回顾性分析,发现确诊的105例患者中的89例均为初期X线诊断中怀疑为乳腺癌患者.结果 早期X线诊断为符合乳腺癌标准的患者89例,占确诊为乳腺癌的105例患者的84.8%,即 X线诊断准确率达84.8%.结论 X线检查在乳腺癌的确诊中具有重要的意义,对早期乳腺癌的发现有积极的意义,值得进一步探讨研究.     

64层容积CT冠状动脉成像假阳性的预防

64层容积CT(VCT)冠状动脉成像(CTA)作为一种安全、可靠和无创伤的影像学检查方法,已广泛用于冠状动脉狭窄的定量评价和介入治疗的筛选。目前公认其具有较高的特异性,但却有一定的假阳性,或者将病变程度严重化。检查前对患者进行3～5d常规的抗凝、扩管、对症等治疗,可明显减少假阳性的发生率(23.2% vs 3.8%)。     

肩锁关节脱位合并喙突骨折的治疗

肩锁关节脱位合并喙突骨折的病例较少发生，临床报道也不多，最近我们收治了一组这样的患者，采用切开整复，钩钢板固定肩锁关节脱位，X线透视下空心拉力螺丝钉固定喙突骨折的方法治疗，临床效果满意，现报道如下。     

肋骨软骨肉瘤的X线诊断3例

软骨肉瘤好发于四肢长骨，扁骨亦可发病，肋骨较为少见，作者遇见3例，均经病理证实，现报告如下。     

CT对急性坏死性胰腺炎的诊断和预后评价

目的探求CT对急性坏死性胰腺炎的诊断及预后的关系。方法回顾性分析符合急性坏死性胰腺炎15例患者并做CT扫描,其中10例增强扫描。结果胰腺呈局限性肿胀者9例,普遍性肿胀者6例,胰腺实质内见到点状低密度灶5例,片状低密度影10例,其中4例同时有小片状高密度出血影;10例增强扫描中,低密度坏死灶与正常胰腺有明显的对比。胰腺周围有大量渗出和3例形成假囊性肿物,1例形成＂气泡＂样脓肿。结论CT征象不仅能对急性坏死胰腺炎做出正确诊断,同时对预后的评价都有重要的指导意义。     

先天性桡骨头脱位1例

1 病例资料 男,15岁,发现右肘畸形10年,疼痛伴活动受限1周,无外伤史.10年前发现右肘后外侧一骨性突起,无疼痛,无畏冷发热,无低热盗汗,到当地医院就诊未予以治疗,近一年来发现右肘原骨性突起变长.一周前无明显诱因感到右肘疼痛,无法伸直.查体:右肘关节屈伸活动受限,屈肘时见肘后一包块隆起,患者有痛感,前臂旋转力减弱,旋前右侧80°,左侧30°,与对侧相比患侧前臂较短小;双肘关节无明显肿胀,皮肤颜色正常.