However, pure background-subtraction-based approaches without human detector may cause false alarms if a person stops moving for a short time.
The use of linear modulation limited maximum OSL signal levels to 1.5 × 106 cps without reducing detector sensitivity, for the measurement of smaller TTOSL signals.
We are proposing a new readout electronics that permits to reduce the 12 row and columns signals to only 8 without significant detector performance degradation.
The evaluation was restricted to non-attenuation corrected images and reconstruction without collimator detector response compensations because of difficulties of generating DICOM images with the required header information for each gamma camera vendor.
It is found that, when the concentrator tracing errors are 0.5° or 1°, the concentration ratios are about 2027 or 1220 without the detector in the radial-direction, and the concentration ratios are about 5447 or 4701 with the detector in the radial-direction.
Again, an average of 87% of the actual value was observed in the inclusion total hemoglobin without the detector (recovery was only 37% with the case).
The average total hemoglobin recovery for the background region was 70% of the expected value without the detector case, but only 54% with it in place – a 23% decrease due to the detector case.
For the conventional images in Fig. 4, the illumination power was set as high as possible without experiencing detector saturation (90 mW at 835 nm entering the scan head).
To eliminate this problem during sample analysis in a more efficient way, we have incorporated additional holding of the column at 280°C, the highest temperature tolerated by the column recommended by the manufacturer, into the method for each injection without the detector on, which could reduce contamination of the ion source.
Without such detectors, he said, "this field which began with Newton just stops".
