数字曲面体层X片在评价非负荷期种植体周围骨吸收的临床应用

目的:评价数字曲面体层X片在测量非负荷期种植体周围牙槽骨吸收的应用情况。方法:观测、分析对比26例患者50枚Camlog系统种植体临床应用非负荷期间数字化曲面体层X片和X线牙片上种植体周围牙槽骨吸收的情况。结果:50枚Camlog种植体植入后10 d,两种X片骨吸收测量结果分别为0.65 mm、0.81 mm,两者之间无明显差异;第4个月(或6月\下颌)分别为0.12 mm、0.19 mm,两者之间无明显差异。结论:本研究显示数字化曲面体层X片在测量非负荷期种植体周围牙槽骨吸收的应用中有操作简单、重复性好、精确度高、变形可补偿等优点,有实际应用价值,值得推广。     

食管钡餐连续摄影用于诊断早期食管癌的初步临床应用

目的 :介绍食管钡餐连续摄影用于诊断早期食管癌的初步临床应用。方法 :用德国产的数字化胃肠机检查并诊断了 6例早期食管癌病人。与常规食管双重对比造影类似 ,病人立位口服钡剂 ,同时进行连续摄影 ,速度为 2帧 s,持续约 10s。观察不同的时相 ,包括充盈相、黏膜相和双对比相。结果 :在 6例病人中可见食管功能的改变及黏膜皱襞的病变 ,用连续摄影诊断后经内镜及病理检查确诊。 4例病人有轻度扩张受限 ,2例病人有痉挛性收缩 ,1例有钡剂滞留。 6例病人中均可见增粗的或中断的黏膜。 5例病人可见小溃疡。结论 :食管钡餐连续摄影可提供更全面的信息。用此法更可提供食管功能性的改变。     

Significance of beaten copper appearance on skull radiographs in children with isolated sagittal synostosis

Aims and Objectives The significance of beaten copper appearance (BCA) on skull radiographs in children following surgery for isolated sagittal craniosynostosis has not been studied. This study was designed to look for any correlation between BCA and symptoms suggestive of intracranial hypertension in this group of patients. Materials and Methods Forty-eight consecutive children, who were operated for isolated sagittal synostosis from1987 to 2000 and had postoperative skull radiographs, were included. Patients were divided into: (a) BCA group (n = 20), consisting of children who had beaten copper appearance on skull radiographs at last follow up, and (b) Non-BCA group (n = 28), consisting of children who did not have this finding. Records were reviewed to look for symptoms suggestive of intracranial hypertension, such as headache, head banging, and irritability. Results Median age at surgery was 4.8 months for BCA group and 4 months for the non-BCA group. Follow up ranged from 4 to 156 months with a mean of 36.2 months. Total of 28.6% (n = 6) of the children with follow up radiographs done at ≤18 months of age had BCA. The incidence of BCA increased to 83.3% in children with skull radiographs performed after 48 months of age. In 18 (90%) children, the BCA was ‘diffuse’ with 5 (25%) children having the maximum possible score of 8. In the BCA group, 45% (n = 9) had symptoms compared to 10.7% (n = 3) in the control group (p = 0.0068). Conclusions This study suggests a significant number of children with BCA on radiographs develop symptoms suggestive of raised ICP following surgical treatment in infancy and prolonged follow up may be warranted in this group of patients.     

海拔高度对人体睡眠结构和神经机能影响的对比研究

本文对青海省果洛州(海拔3730米)8名健康成年人和抵平原(苏州,海拔10米)的青海省天峻县(海拔3500～3700米)的12名健康成年人,分别连续7小时用多导仪临测夜间睡眠变化,进行对比研究。发现总睡眠时间A组较B组有减少趋势;总醒觉时间占实际记录百分比A组较B组明显增多(P<0.05);有效睡眠指数百分比,REM占总睡眠时间百分比A组较B组显著减少(P<0.01);N—REM占总睡眠时间百分比A组较B组明显增多(P<0.05)。慢性高原低氧对人体神经系统的影响主要为机能紊乱和大脑皮层功能失调。这些改变抵平原后随停留时间的延长而具有可变性。     

颈椎不稳症的影像诊断(附50例报告)

目的探讨颈椎不稳症的影像学诊断。方法回顾性分析50例经临床证实的颈椎不稳症患者的X线平片、CT和MRI检查资料。结果50例中上颈椎不稳16例,其中,寰枕关节不稳2例,表现为枕底—齿突线和斜坡—齿突线不连续,14例为寰枢关节不稳,其中,寰枢关节脱位7例;下颈椎不稳34例,其中,前屈不稳20例,后伸不稳14例。结论X线平片、CT和MRI综合分析能对颈椎不稳症作出准确的诊断。     

Parenchymal and pleural fibrosis in construction workers.

Exposure to mineral dust was studied among construction workers (N = 437) with the aid of a questionnaire and a chest X-ray examination of the lungs. The results of the questionnaire showed that 81% of the construction workers had been exposed to asbestos. Exposure had occurred in all of the occupational groups studied. Pleural plaques and/or lung fibrosis (ILO greater than or equal to 1/1) were found in 26% of the examined workers; the prevalence varied from 18 to 40% among the various occupational groups. Comparison with a representative sample of the Finnish male population from another investigation indicates that the frequency of lung fibrosis (ILO greater than or equal to 1/1) is at least two times higher among the examined construction workers than among the general population. It seems likely that exposure to asbestos dust can be considered an etiological factor for an appreciable number of the X-ray findings.     

Radiologic search for embolized leaflets of prosthetic heart valves: A report of two cases

In a radiologic search for embolized leaflets of Edwards-Duromedics bileaflet valves in 2 patients, the embolized fragments were localized in the iliac vessels using computed tomography. Sonography was successful in one case and standard X-ray films of the abdomen were negative in both cases.In vitro investigations with Björk-Shiley and Edwards-Duromedics leaflets suggested that standard X-ray films of the abdomen and pelvis should be considered as the first investigational technique. If negative, computed tomography of the lower abdomen should be done.     

年轻成人Perthes病的临床表现与MRI研究

目的　研究年轻成人Perthes病的临床表现与MRI表现的相关性。方法　对 12例有或无症状年轻成人Perthes病患者作X线和MRI检查 ,测量CE角、ATD、髋臼商、头颈商、关节内侧间隙和髋臼覆盖率等X线指标 ,以及关节积液、外侧关节囊厚度等MRI表现。统计分析其与临床表现的相关性。结果　MRI检查显示外侧关节囊厚度与愈合后遗的症状有相关性 ,关节积液量有明显的差异趋势 ,但因样本量过少 ,统计学分析无差异 ,各项X线测量指标亦未显示明显的相关性。结论　外侧关节囊厚度与年轻成人Perthes病的临床表现有一定相关性。     

薄层CT在鼻部外伤中的诊断价值

目的:对比X线平片与薄层CT扫描对鼻骨骨折的诊断价值。方法:回顾性分析131例鼻部外伤患者的薄层CT检查与鼻骨侧位X线平片对鼻骨骨折的诊断率。结果:131例鼻部外伤患者鼻骨侧位X线平片诊断鼻骨骨折48例(36.6%),可疑骨折22例(16.8%),未见骨折61例(46.6%);薄层CT检查显示:鼻骨骨折83例(63.4%),可疑骨折3例(2.3%),未见骨折45例(34.3%)。薄层CT诊断鼻骨骨折与X线平片差异有非常显著性(P<0.01)。结论:与X线平片相比,薄层CT可更清晰地显示鼻骨骨折错位的程度及对鼻部邻近结构如鼻中隔、筛骨、上颌骨损伤的显示则更为优越,临床疑有鼻面部骨折者应首选薄层CT检查。     

Plain Language for Patient Education

Low health literacy continues to be a barrier in patient education. One solution to low health literacy is creating or providing patient education materials written in plain language. Plain language follows guidelines created for federal agencies to ensure that documents are written in clear and accessible language for all audiences. Health care professionals and librarians can locate or recommend plain language health information from many reputable consumer health websites.