How much higher or lower is this intensity compared

Reference no: EM13948925

1. Suppose a diagnostic x-ray image (i.e. radiograph) for a patient requires 100 photons/mm² at the detector plane and the patient has 20 cm water equivalent thickness with only soft tissue in the beam path. If the radiograph was taken with a 20 KeV photon beam and a 100 keV photon beam, how much higher would the incident intensity, in photons/mm², need to be for the 20 KeV beam than with the 100 KeV beam? Use the following linear attenuation coefficients for μ. At 20 keV, μ = 0.76 cm^-1 and μ = 0.76 cm^-1 at 100 keV.

2. If another radiograph was taken for mammography with a 20 KeV beam penetrating thickness of 4 cm, what incident intensity would be required then? Assume that 100 photons/mm² is still required at the detector plane. How much higher or lower is this intensity compared to the 100 keV beam penetration 20 cm of soft tissue?

Reference no: EM13948925

Questions Cloud

Display the total price of the cup of coffee : Create a UseTVShow.java file that prompts the user to input up to 5 TV shows and stores the data in an array of objects first, then displays them as a list.

Should firms hedge : Should firms hedge? A number of firms practice hedging and use derivatives to manage risk and change risk exposure. Some people argue firms should stick with their core business (i.e airlines should concentrate and on operating airlines). What do you..

Compute the budgeted divisional roi for the air conditioner : Compute the ROI for each investment project. Compute the budgeted divisional ROI for The air conditioner investment is made.

What principles of distributive negotiation did sherman use : Based on the above reading and the knowledge gained from your assigned readings, respond to the following questions: What principles of distributive negotiation did Sherman use to gain his advantage? Do you think Sherman behaved ethically? Why or why..

How much higher or lower is this intensity compared : How much higher or lower is this intensity compared to the 100 keV beam penetration 20 cm of soft tissue - how much higher would the incident intensity, in photons/mm2, need to be for the 20 KeV beam than with the 100 KeV beam?

Change in dividend than with actual amount of dividend : Dividends tend to fluctuate in direct relation to changes in annual earnings. Managers are less concerned with the change in the dividend than with the actual amount of the dividend. Managers tend to avoid smooth dividends as they don't signal the fi..

Designing a string-checking algorithm : Provide an example of an input string that is in the proper format and an example that is not in the proper format. Describe how your algorithm determines that the first string is in the proper format and that the second string is not in proper fo..

Calculate the roi for the division without the investment : Compute the ROI for the division without the investment. Compute the margin and turnover ratios without the investment. Show that the product of the margin and turnover ratios equals the ROI computed in Requirement 1.

Determine the velocity and acceleration of point : The disk rotates about the shaft S, while the shaft is turning about the z axis at a rate of vz = 4 rad>s, which is increasing at 2 rad>s2. Determine the velocity and acceleration of point A on the disk at the instant shown. No slipping occurs.

User Account

All Pages