DICOM is an international standard in medical imaging and communication. This paper introduces the design of digital X-ray data storage and communication according to DICOM3.0 and emphasizes the implementation of such modules as the ones for communication and data storage.

This paper develops a type of x-ray unit which can produce x-ray image suitable for medical diagnosis. The unit is composed of a CCD image sensor with high sensitivity and high resolution, a digital image acquisition board, and a suit of computer software. The software can be applied as the doctor's workstation with the functions of patient register, image process and image management. Some styles of digital radiography technology are introduced briefly, and the principle of the x-ray unit as well as its hardware and software designs are presented particularly.

Objective To evaluate the reliability and validity of the Reflective Function Questionnaire for Youth(RFQY). Methods School sample:a total of 1 813 students from the fifth grade primary school to the second grade high school were selected for the study(aged 10 to 17 years). Clinical patients:another 52 adolescents(aged under 17 years)with borderline trait who attended Department of Psychiatry in Shengjing Hospital were recruited. All subjects completed the RFQY,basic empathy scale( BES )and emotional intelligence scale(EIS). After 3 weeks,85 students were randomly selected and filled in the questionaires again. Results The internal consistency of the RFQY was 0.73,and the test?retest reliability was 0.686(P<0.001). The RFQY scores of the school students were significantly higher than those in clinical patients(8.71±0.65 vs 8.10±0.89,P<0.001). The RFQY scores of male students were significantly lower than those in female students(8.61±0.67 vs 8.78±0.63,P<0.001). The score increased with the age increased(P<0.001). Conclusion The Chinese version of RFQY shows good reliability and validity , which can be used to measure the reflective function of adolescents in China .

Objective To evaluate the reliability and validity of reflective functioning questionary-54 (RFQ-54) in China.Methods School sample:a total of 635 students were selected for the study.Clinical patients:another 75 patients with borderline personality trait who visited Department of Psychiatry in Shengjing Hospital of China Medical University were recruited.All subjects filled the RFQ-54,MIS-BPD,TAS,FFMQ.44 students accepted the retest after three weeks.Results The internal consistency for RFQ-C and RFQ-U were both 0.628.The test-retest reliability was 0.835,0.683,respectively.The correlations with TAS,FFMQ,MIS-BPD supported its validity.The RFQ subscales scores were significant1y different between only-child and non-only child,urban and country,school group and clinical group (22.11 ± 1.34 vs 18.97 ± 1.22,22.59 ± 1.36 vs 17.61 ± 1.12,21.39 ± 1.32 vs 15.34 ± 1.08,10.95 ± 8.43 vs 13.58 ± 8.19,10.95 ± 8.36 vs 13.88 ± 8.26,11.47 ± 8.02 vs 22.43 ± 1.24,respectively.P ＜ 0.01).Conclusion The Chinese version of RFQ-54 shows good reliability and validity,which can be used to assess the reflective function of adults in China.