Experience shows that many data processing problems are diicult to solve, and some of these problems have even been proven to be computationally intractable. Human experts successfully solve many such problems by using a hierarchical, multi-resolution approach. These multi-resolution methods are, in several cases, provably optimal. However, due to the computational intractability of the problem...

C-arm fluoroscopy is modelled as a perspective projection, the parameters of which are estimated through a calibration procedure. It has been universally accepted that precise intra-procedural calibration is a prerequisite for accurate quantitative C-arm fluoroscopy guidance. Calibration, however, significantly adds to system complexity, which is a major impediment to clinical practice. We chal...

The effect of temperature on gastric emptying after milk feeds was studied in 31 newborn infants. Test meals were a commercially prepared modified cows' milk (a) at body temperature and (b) at room temperature. Our results suggest that temperature has no effect on gastric emptying.