Temperature, pressure and experiment data were collected during the mission and transferred to the onboard computer system of ISS, then to the Earth stations for transmission to the experimenters.
The torso uses commercial parts common to the field of radiotherapy; various instrumented 'slices' were composed of natural bones embedded in plastics simulating tissue and lung.
[1] The principal investigator is Guenter Reitz, Ph.D. of the German Aerospace Center (DLR), Cologne, Germany.
Matroshka-1 (MTR-1) was sent to the ISS aboard the Soyuz-U/Progress M1-11 supply vehicle launched from Baikonur Cosmodrome on 24 January 2004, and was placed on the outside of the Russian Zvezda module[2] during a spacewalk during Expedition 8 by Alexander Kaleri and Michael Foale on 15 March 2004, and brought inside during Expedition 11 on 18 August 2005 then the experimental elements were returned to Earth with that crew on 11 October 2005.
These 'slices' were mounted and measured similar data for conditions inside the ISS until active detectors were received later (experiment 2B) to continue dose readings until its eventual return to Earth[3] using replacement sensor parts.