A detector for a portable imaging system includes a flash memory including a full set of configuration parameters and calibration files. Auxiliary splitter section shifts are automatically implemented by a splitter shifter under commands from a controller. The amplitude of the component is increased if the rotor is lagging behind the rotation field or the amplitude of the component is reduced if the rotor is running ahead of the rotation field. A processor computes a parameter based on the CO2 waveform feature and a volumetric CO2 waveform feature based on signals from the air flow sensor andor the CO2 sensor. The seal provides a grease chamber that prevents solid particles from reaching the main seal by migration within the mechanical shaft seal. The therapy includes the administration of particulate compositions to a region comprising an infarct or a portion thereof.