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Real time BIA - Quantum-II Desktop

The Quantum Desktop System, like all RJL Analyzers, is designed to be a portable instrument. It has the same range (0-1000 ohms) and resolution (0.1 ohms) as our Quantum X Analyzer. It also can be used to analyze human body composition or perform BIA analysis on biological materials such as animals, fish, plants, or specific segments of the human body (i.e. chest, muscle groups, and organs). (1)

The Desktop System is a complete, self-contained instrument. When used for measuring human body composition it can retrieve resistance and reactance values from the subject, perform all of the body composition calculations, and print a basic report using the attached thermal printer. Data entry (subject ID, height, weight, etc) is accomplished with the keyboard included with the Desktop System.

This system can temporarily store patient records, so they can be transferred later to the BC Software for historical tracking and printing of more detailed reports. In addition, the Desktop System can be directly connected to a PC and interact with BC Software.

Its accuracy, record storage system, and printing capability reduce errors in measurements and data entry. Like all RJL products, it is built to specifications necessary to comply with peer review literature guidelines and traditional BIA instruments.

What makes the Desktop different from other RJL Analyzers is that it is designed to measure resistance and reactance as Real Time events. Real Time BIA is similar to using a video camcorder, only instead of recording moving images, a steady stream of data with adjustable sampling rates from one millisecond to several hours between samples can be obtained. The Desktop can save up to 15,000 records with individual time stamps in its internal non-volatile memory that can be retrieved at a later time.

The Data Logger software, which is included with the Quantum Desktop System, allows it to do much more than the Quantum X. The Data Logger allows the system to be used as an impedance plethysmograph, recording real-time changes in resistance and reactance, and displaying them on the screen. The Data Logger is not sold separately, as it is designed to be used solely with the Quantum Desktop. Its use is intended for investigational purposes only.

RJL Systems is producing a series of essays discussing the science of BIA and applications of the Quantum Desktop to collect real-time data. Those essays can be found here.

For more information on the features and specifications of the Quantum Desktop, click here.

To view documentation and user guides, click here.

(1)RJL Systems only provides software for estimating human body composition from a whole-body measurement. Users wishing to do segmental body composition analysis or to study nonhuman organisms must acquire software or equations elsewhere. BC is packaged with the Quantum Desktop.