Microsoft Excel and other spreadsheets do not support Monte Carlo simulation directly. But, there are a number of software products that are add-ins to Excel that let you perform Monte Carlo simulation. The best known are Oracle Crystal Ball and Palisade Software's @Risk, which are both excellent products. What is different about Analytica is that Lumina designed Analytica from its inception to perform Monte Carlo simulation (and LHS methods), so, probabilistic analysis was fully integrated into the product from the start. This gives Analytica's Monte Carlo features certain advantages over spreadsheet add-ins, in terms of ease of use and speed of computation. You can define any variable, or any cell in an array, as a discrete or continuous distribution. You can view the probability distribution for any resulting variable as a set of probability bands (selected percentiles), as a probability density function, cumulative distribution function, or even view the underlying random sample.
Many medical simulators involve a computer connected to a plastic simulation of the relevant anatomy. [ citation needed ] Sophisticated simulators of this type employ a life size mannequin that responds to injected drugs and can be programmed to create simulations of life-threatening emergencies. In other simulations, visual components of the procedure are reproduced by computer graphics techniques, while touch-based components are reproduced by haptic feedback devices combined with physical simulation routines computed in response to the user's actions. Medical simulations of this sort will often use 3D CT or MRI scans of patient data to enhance realism. Some medical simulations are developed to be widely distributed (such as web-enabled simulations  and procedural simulations  that can be viewed via standard web browsers) and can be interacted with using standard computer interfaces, such as the keyboard and mouse .