No abstract

The rapid emerging of mobile Internet provides new opportunities for information services. One of the service types is tied to mobile location technology that allows defining the geographical location of a mobile user. It enables the development of new class geographical information services. Location-based applications require careful development of the general architecture as well as a data format for information transfer due to restrictions of mobile devices and wireless data networks. In this paper, we examined a use of different format types in mobile information services for the representation of geographical information. Then, we propose to use an XML-based data model language for geographical information description in such systems. We describe the logical structure for the new format and basic tags. We expect our format helps in effective development of geographical applications for the mobile environment.

A dedicated optic-mechanical device, attachable to an ultrasound scanner, has been developed that allows visual documenting of ultrasound examination by recording multiple gray-scale images, i.e. ultrasound tomography (UST), to be performed routinely and at low cost. The device is operated by one hand without interrupting the examination. Each page of UST report is composed by deliberate positioning multiple images within the 2x4 framework and recorded on a 35-mm microfilm. If necessary, graphic reconstructions were composed from standard graphic components and interposed between the original images on the same frame. UST report is communicated to a patient and/or a referring doctor on a compact reflective hardcopy. Trial-and-error search for optimal number of images that constitute adequate UST document resulted in plateau of average 30±1.8 images per patient visit. Practice of UST is well accepted by local medical community and by patients, and the first year since its introduction yielded two-fold growth of referral to Ultrasound Studio. Low-cost opticmechanical UST system could create locally culture of reporting ultrasound examination in images rather than verbally, and facilitate for further introduction of more advanced digital systems.