Systems and methods for simultaneously acquiring three-dimensional data from multiple different frequency bins with a magnetic resonance imaging system, and without frequency-encoding gradients, are provided. The optical pointing device comprises a cover, a light source and a sensor. Statistical analysis is performed of both the first and second discrete derivatives to detect speech distortion by looking at the distribution of the signals. The second signal represents energy from the first signal that is reflected by air particles beyond the boundary layer. A fourth data storing region of another one of the second storage volumes is allocated from the second pool by the second storage controller. The ETCO2 lumen and oxygen supply lumen form a unitary oral cannula such that the oxygen supply lumen outlet is spaced apart from the ETCO2 lumen inlet.