Cardiac functional imaging from cinescintigraphic data

The gamma-cine-cardiographic data allow the construction of functional images showing the local variation of some dynamic parameter. The very simple technique for the storage of the data described is inexpensive and useful in any case of data storage system and its two principal disadvantages (no normalisation of the cardiac cycle duration; low digital resolution of the images) are not very important for this particular application, respectively for the following reasons: the dynamic parameter which is displayed is calculated by taking in account only the systolic part of the cardiac cycle; the statistical accuracy of the dynamic curve calculated for one single point is better if this point corresponds to a larger area of the camera field and a compromise must be found between resolution and counting accuracy