Design a box that will contain a 4 in. × 6 in. × 3 in. volume.

Design a box that will contain a 4 in. × 6 in. × 3 in. volume. The box should be produced from two pieces of sheet metal and require no tools or fasteners for assembly. This is an open-ended problem with a wide variety of answers. Students should consider the blank shape, whether the box will be deepdrawn or produced by bending operations (see Fig. 7.68), the method of attaching the parts (integral snap-fasteners, folded flaps or loosefit),

 

and the dimensions of the two halves are all variables. It can be beneficial to have the

\students make prototypes of their designs from cardboard. 7.100 Repeat Problem 7.99, but the box is to be made from a single piece of sheet metal.

This is an open-ended problem; see the suggestions in Problem 7.99. Also, it is sometimes

helpful to assign both of these problems, or to assign each to one-half of a class.

find the cost of your paper

Explain why attenuation is not a big problem in PET.

Consider a 2-D object consisting of two triangle compartments, as shown in Figure P9.4. Suppose a solution containing a 511 KeV gamma ray emitting radionuclide with concentration f = 0.5….

Give the mean and the variance of the reconstructed image, mean[ˆ f(x, y)] and var[ˆ f(x, y)].

Ignoring the inverse square law and attenuation, an approximate reconstruction for SPECT imaging is given by where c˜() =  {||W()} and W() is a rectangular windowing filter that cuts off at = 0…..

Find the numerical responses in each to an event in crystal C(4, 6).

Suppose a PET detector comprises four square PMTs (arranged as a 2 by 2 matrix) and a single BGO crystal with slits made in such a way that it is….