Mobile Chest X-ray for prevalence studies and risk group screening Print

Fully equipped and ready to use semi-mobile diagnostic TB container consists of an X-ray and reception room, batteries, solar panels or a mobile power generator, UV light and a complete work station where digital images can be read and stored digitally; all incorporated in a lead shielded 20 foot container.

Fit for easy Transport: As a standard sized 20 foot container, the unit is transportable by any truck locally available and is optimised for large scale prevalence studies or systematic screening programs in prisons, mines etc. With a sophisticated - yet simple to operate - lifting device, the relatively low weight container is off-loaded from the truck and the X-ray system can be up and running in less than 1.5 hours. The truck is normally not integrated in the mobile unit, so the unit can after the prevalence survey is completed for instance be operational in a fixed setting for TB screening at a prison site, mine or hospital.

Energy supply: With the latest technology in batteries and inverters, the unit is capable of making, storing and sending approximately 200 images without the need for external power. Solar panels on the roof or a mobile generator that can be stored in the container can also be used to generate energy at remote sites. Climate control can be integrated in the mobile unit.

The reception room contains the diagnostic viewer and PC and is separated from the camera room by led protected walls and door.

The X-ray room contains the digital X-ray system that is fixed in the container floor.

Patient Positioning

DR Unit Layout

CIDRZ based in Lusaka, Zambia operates the mobile `One Stop TB` container concept with a (single phase) Direct Digital Radiographic system and a small laboratory for TB prevalence surveys in high risk groups, like inmates. This diagnostic container was awarded in 2010 a grant under the WHO TB Reach call for innovative TB case detection proposals and ranked in 2011 first place on the impact analysis (presentation at UNION Conference in Lille 2011).

The NTP of Rwanda operated the 2 compartment diagnostic container with Direct Digital X-ray and Computer Aided Detection software to support its TB prevalence survey. A central archive and PACS software allows the NTP of Rwanda to forward all digital Chest X-rays including participant data over the mobile phone network as one compacted electronic file to a central database in Kigali for second reading and back-up. Data transmission per participant over the mobile phone network typically take 35 seconds. Similar operational experience was reported from Ghana.

Below images illustrate flexibility for the diagnostic container in combination with a standard truck.

“Also lower cost portable digital X-ray systems are available for reaching the most remote areas with digital radiology. These systems can be transported in the back of for instance a SUV like a Landcruiser or Landrover. Images taken in remote locations where mobile phone network is available can be sent instantly to the central database in for instance the capital city”. Batteries can be incorporated in the SUV to enable self sufficient power supply in the field. The MRC of The Gambia, the NTPs of Kenya, Zimbabwe and Ghana operated these using portable dCXR systems for the TB prevalence survey. Also as a result of smart image compacting software in the PACS up to 300 digital X-rays per day could be made, viewed and stored with one system without the need for consumables.