β Scribed by Alan D. Waxman; Jan K. Siemsen; Edward Efron; Jack Wright
No coin nor oath required. For personal study only.
Data from the Anger Camera were obtained by means of a data acquisition computer or high resolution film reader and stored on magnetic tape. Correction for nonuniformity was obtained for camera flood and stored for processing incoming data. In addition, a method of contrast enhancement which allows the user to visualize the resulting image and its histogram is described.
Camera data is becoming more widely utilized in the nuclear medicine environment since there is a need to correct nonuniform brightness response and to overcome the inherent lack of contrast manipulation in the standard system. The following digital computational techniques have been developed by our group.
METHODS
A. General
π SIMILAR VOLUMES
A program was written to convert the output of a scanning gamr~a camera into a whole beAy computer image which can then be used to study regional and whole body radiopharm ~ :eutical localization. The electronically masked output of the camera is collected as a dynan~c study on the computer ~Ath the
Several disadvantages of using intensified television cameras to acquire TEM images can be overcome by using background subtraction with a frame store.
## Abstract An algorithm is proposed which improves the spatial resolution of difference or effect images acquired with a keyhole sampling strategy. This new reconstruction algorithm uses __a priori information__ about sharp structures in the observed signal changes from a high resolution reference