Objective To develop hepatic CT perfusion software on personal computer (PC), and to calculate hepatic perfusion parameters and render pseudo color perfusion image Methods A DICOM supported platform was developed on PC with Delphi 7 0, including DICOM data reading, storage, and display interfaces Hepatic CT perfusion software (PerfX) was developed upon this platform Results This software was based on Windows 2000/XP system, which could run smoothly on a computer with CPU above 500 MHz and RAM above 128 MB It could calculate hepatic arterial perfusion, portal venous perfusion, and hepatic perfusion index of region of interest, and show anatomic and functional details within one pseudo color perfusion image Conclusion A complete post processing was finished on PC by using PerfX, from DICOM data support to arithmetic analysis

Objective To investigate the role of bone metabolic indices in the diagnosis and monitoring of therapeutic effects in osteoporosis, the serum tartrate-resistant acid phosphatase form 5b(TRACP5b) level and other parameters such as Dpd in urine of osteoporosis animal model (ovariotomy rats) in different timing point were measured and analyzed. Methods Eighty female SD rats were divided into five groups and had ovariotomy operation (one group was pseudo-operated). Drug treatment began at the third day after the operation. Six rats in each group were sacrificed after 4 weeks and 14 weeks respectively, the bone metabolic indices were measured and bone histomorphometric data were collected. Results Four weeks after operation, the Dpd/Cr and TRACP5b in ovariotomy group were significantly higher than those in the pseudo-operated group, and TRACP5b was still higher after 14 weeks. In the drug treatment groups, serum E2 level was not changed 4 weeks later, however, Dpd/Cr and TRACP5b had changed greatly. After 14 weeks of drug treatment, there was only a significant decrease of TRACP5b among the bone resorption parameters, but other indices had no change.Bone histomorphometric data showed that the bone volume was improved in each drug treatment group. Conclusions Serum TRACP5b level can reflect the activitiy of osteoclasts and the situation of osteoporosis either in the early stage (high turnover period) or in later stage (low turnover period) of osteoporosis. The drugs used in this experiment can inhibit the ostoclast activity and reduce the level of bone resorption parameters, especially the TRACP5b level. Bone histomorphometric results suggestes that the function and manners of different drugs vary in improving of bone volume.

OBJECTIVEAccording to the characteristics of digital medicine and the demands of digitalized management in hospitals, we established a storage system that is affordable, highly expandable, and reliable.

METHODSThe multi personal computer storage system (MPCSS) was constructed using hardware and software. The image data were archived from major servers to storage personal computers (PCs) by using Neusoft-picture archiving and communication system (PACS) and backed up on storage PCs. We simulated data loss on storage PCs and then restored the data. We also expanded the storage system to enlarge its capacity.

RESULTSThe average transfer rate from MPCSS was 27.7 MB/s, and the average cost for this system was yen 74/GB. In the testing stage, only 6 of 187 instances of data retrieval (from 100 patients) failed.

CONCLUSIONThe MPCSS is much less expensive than other high capacity systems or devices. It is feasible and suitable for digital image storage.

Computer Storage Devices ; utilization ; Cost-Benefit Analysis ; Microcomputers ; economics ; Radiology Information Systems ; economics

Capital Medical University has opened the courses of Prosthetic and Orthotics Engineering since 2003. Through a three-period development of more than ten years, the professional training scheme has met the international requirements and highlight in specialty characteristics. It needs a combination of medicine, rehabilitation, technology, prosthetic and orthotics, an enough foundation for personals and sites, teachers of bi-profession, and a comprehensive test system to practice.