Imaging response

Measurements of AOTF performance were carried out at 355 mn. The throughput of the quartz AOTF device was >99%. Up to 400 images per wavelength were collected, processed, and analyzed. From the image response, the passband characteristics were determined. In the best case, full width at half maximum (FWHM) less than 0.0625 mn was achieved. From the second set of measurements, a FWHM of 0.125 nm obtained. These passband characteristics are shown in Figure 4 along with the RF drive frequency in the top axis. The measured diffraction efficiency of the device was 15%. 

Fig. 5.3.13 Hadamard encoding and decoding for simultaneous four-slice imaging. The encoding is based on four experiments, A-D. In each experiment, all four slices are excited by a multi-frequency selective pulse. Its phase composition is determined by the rows of the Hadamard matrix H2. The image response is the sum of responses for each individual, frequency selective part of the pulse. Thus, addition and subtraction of the responses to the four experiments separates the information for each slice. This operation is equivalent to Hadamard transformation of the set of image responses. Adapted from [Miil21 with permission from Wiley-Liss. Inc., a division of John-Wiley Sons, Inc.

Kennedy AS, Van Echo DA, Murthy R et al (2002) Colorectal (CRC) liver metastases and hepatocellular carcinoma (HCC) treated with outpatient hepatic artery brachytherapy, TheraSphere imaging response and toxicity. Int J Cancer S13 226-227... 

Muller-Schwarze, D., Morehouse, L., Corradi, R., Zhao, C.-H., and Silverstein, R.M. 1986. Odor images responses of beaver to castoreum fractions. In Chemical Signals in Vertebrates 4 (Ed. by D. Duvall, D. Muller-Schwarze, and R.M. Silverstein), pp. 561—570. New York Plenum Press. 

Odor Images Responses of Beaver to Castoreum Fractions... 

ODOR IMAGES RESPONSES OF BEAVER TO CASTOREUM FRACTIONS... 

Muller-Schwartze, D., L. Morehouse, R. Corradi, C. Zhao, and R.M. Silver-stein Odor Images Responses of Beaver to Castoreum Fractions. In D. Duvall, D. Muller-Schwartze and R.M. Silverstein eds. Chemical Signals in Vertebrates vol IV Ecology, Evolution and Comparative Biology. New York Plenum Press... 

The frequency needs to be high enough so that the receiver image response can be made acceptably small. 

The image response is the reception of an imwanted signal located at the image frequency due to insufficient attenuation of the image signal by the RF amplifier filter. The image is best illustrated by an example. 

From Fig. 12.7 it is seen that the image response will usually be reduced if the IF frequency is increased, since /image wiU occur farther away from the main peak (or lobe) of the RF filter characteristic Hi(/). ... 

We also realize that other spurious responses (in addition to the image response) will occur in practical mixer circuits. These must also be taken into account in good receiver design. 

Standardize Image Background = 0.02 is used for this experiment. Fig. 4 shows image response of contrast stretching in which the original value r is mapped to output value s. 

Fig. 17 Simultaneous topographical (a) and electrochemical (b) imaging response of neuronal cells achieved using dual-barrelled theta capillary SECM-SICM probes. Electrochemical response reflects the oxidation of 0.5 mM ferrocenemethanol at a tip potential at 0.5 V vs. Ag/AgCl. Reproduced from ref. 158 with permission from Wiley VCH.

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