Explain how you would use the X and Y signals coming out of the opposing Anger cameras.

You decide to build a PET scanner from a dual-head SPECT camera you own. It has two 30-cm square Anger cameras mounted facing each other 1.5 m apart.

(a) Would you use the low-energy collimators, the high-energy collimators, or no collimators? Explain.

(b) What significant piece of electronics would you have to add to the SPECT circuitry to make this work as a PET scanner?

(c) Explain how you would use the X and Y signals coming out of the opposing Anger cameras. Would you use the Z-pulses? Why or why not

(d) You will have to rotate the Anger cameras at some point during the scan. What is the minimum number of angular positions of the two cameras that would be required in order to get full angular coverage for PET reconstruction?

(e) Consider the radiotracer concentration in the body. Would you expect to require a higher, lower, or about the same dose in this make-shift PET scanner versus a real PET scanner? Explain your rationale.

find the cost of your paper

Determine the thrust available to propel the cart.

A CO2 cartridge is used to propel a small rocket cart. Compressed gas, stored at 35 MPa and 20C, is expanded through a smoothly contoured converging nozzle with 0.5 mm….

Determine the range(s) of inlet stagnation pressures for which the nozzle will be free from normal shocks.

A converging-diverging nozzle, with Ae/At 5 1.633, is designed to operate with atmospheric pressure at the exit plane. Determine the range(s) of inlet stagnation pressures for which the nozzle will….

Find the range of exit pressures for which the duct exit flow is choked.

Room air is drawn into an insulated duct of constant area through a smoothly contoured converging nozzle. Room conditions are T 5 80 F and p 5 14:7 psia. The….