This paper analyses the significance of applying investigating study to teaching practice of medical physics at present.It introduces the establishment of a research project of investigating study in medical physics and specific research methods.

Digital X-ray photography has been applied to clinical medicine in recent 3years.This paper introduces the development situation of the flat detectors for digital X-ray photography.The technical indexes and structure differences of the detectors are presented in this paper.

In order to effectively and smoothly conduct an assessment of students' study in medical physics,it is necessary to design the assessment criteria for enhancing students' development in medical physics study.This paper deals with the construction of the assessment system and the design of the assessment criteria for evaluating students' study in the education of medical physics.

To carry out the innovation education in physics experiment,the teaching personnel should firstly update their concept involved,enhance the consciousness of innovation and optimize the teaching goals.Then they should permeate all the above-mentioned into the process of experiment,reform the model and methods and explore the new content from various aspects to cultivate the students'sense,spirit and capability for creativities.Besides,the laboratory should be available for the students' access and liberty to operation.

This paper analyzes current problems in teaching thermology in medical physics.It introduces some ideas for reforming the thermology teaching:reforming traditional structure and system of its contents and improving teaching methods.

How to select and organize the content of course is an important component in curriculum reform. The special part for medicine in medical physics has characteristics of medical college, and is essential. The integration of this part is difficulty in curriculum reform of medical physics. In detail, the corresponding part of physics for medicine is integrated into a topic, which followed the part of classical physics. We adopted the method of special-topic teaching. Based on teaching experiences and in combination with the practical condition of the medical college, this paper selects and recombines some course content for medicine from medical physics, which is adopted by five-year medical students. Furthermore, some teaching requirement and guidance suggestion are presented.

group was also higher than that in the control group, Z=2.39, P<0.05,all which had significant difference, P<0.05.While no significant difference was found in the scores of the Geriatric Depression Scale or the Cornell Scale of Depression Disease between two groups, Z=1.21, P>0.05. Conclusions Reminiscence therapy improves cognitive function, the ability of self-care and social communicate of patients with mild to moderate dementia patients,so that it can improve further patients′quality of life.

Objective In order to investigate the effectiveness of unique cyclic biomechanical stretch on proliferation, alkaline phosphatase (ALP) activity and osteopontin (OPN) mRNA of colonal murine osteoblast-like cell line MC3T3-E1 in three-demensional culture. Methods Gelatin sponges with a size of 2.00 cm?2.00 cm?0.25 cm were used as the three-demensional culture vector of MC3T3-E1, 100 ?l cell suspension was applied to the surface of sponge, the cell number was 1.25?105. The gelatin sponges could be stretched to 5% with 60 cycles/min and 15 min/h on computerized bio-stretch controller. At 2, 4, 6, 8 and 10 d after stretch stimulation, three samples were collected at each time point from the stretch and con-trol group respectively. Cell counting, activity assay of ALP both of cells and medium as well as OPN mRNA measurement were carried out. Results The cell number of the stretch group was more than that of control group from 2 d (P

Objective To establish a new kinetic spectrophotometry for determination of formaldehyde in water sample. Methods Micro formaldehyde could sensitively catalyze the discoloring reaction of methyl orange oxidized by potassium bromated in dilute H3PO4 medium, the relationship between the reaction speed and the content of formaldehyde could be determinated by spectrophotometry, then the content of formaldehyde could be determinated. Results The optimum condition and kinetic paramneters were investigated and showed in the present paper in detail. The calibration curve showed linearity in the range of 0.13-3.0 ?g/ml and the limit of detection was 4.7?10-5 mg/ml. The RSDs ranged from 1.5% to 3.3%.The recovery rates ranged from 97.3% to 102.0%. Conclusion The mothed was simple, rapid and more sensitive, can be used for the determination of micro amounts of formaldehyde in water sample with satisfied results.

Objective To improve the diagnosis and treatment of primary duodenal malignant (neoplasms)(PDMN).Methods The clinical data of 19 patients with primary malignant neoplasms of the (duodenum) were anayzed retrospectively.Results The clinical manifestations were jaudice in 9 cases, upper abdominal pain in 7 cases, gastrointestinal hemorrhage in 6 cases,abdominal mass in 3 cases,and vomitting in 1 case. Diagnostic procedure and detection rate: The detection rate of PDMN by duodenoscopy was 83.3%(15/18), by hypotonic duodenography was 82.3%(14/17), 77.8%(7/9) by CT, and 1 case by MRI.16 cases (underwent) surgery with resection rate of 68.8 %(11/16).Pancreaticoduodenectomy was (performed) in 9 (cases), simple tumor resection and regional lymphadenectomy in 1 case,resection of duodenal bulb plus partial gastrectomy in 1 case,and gastroenterostomy or choledochojejunostomy in 5 cases.The radical resection rate was 62.5%(10/16).The postoperative 1-,3-,and 5-year survival rate in radical (resection) (patients) was 90.0%(9/10),40.0%(4/10) and 30.0%(3/10),respectively.In those with (gastroenterostomy) or (choledochojejunostomy), the survival time was 6~15 months. Conclusions (Duodenoscopy) and hypotonic (duodenography) are ideal tools for the diagnosis of all locations of PDMN.(Pancreaticoduodenectomy) might result in prolonged survival of patients with PDMN.