Methods and devices are provided for determining the presence andor concentration of at least one analyte in a sample of low transmissivity. The X-ray grid of this invention has an absorber. An upper surface of the drying zone is defined by an extended surface portion of an outer surface of a housing of the drying unit, the extended surface portion extending from the discharge port toward the downstream side in the conveyance direction to cover the conveyance path from above. This interleaving of data bit write windows allows a larger number of data bits to be written without exceeding system specifications reducing overall memory write time. Stents, stent delivery devices and methods of performing medical procedures to redirect and or re-establish the intravascular flow of blood are provided for the treatment of hemorrhagic and ischemic disease states. Some aspects are directed to an acoustic cavitation resonator that can be placed under high static pressure and to which a set of ultrasonic drivers are coupled so as to cause cavitation in the resonator during operation.