10. In order to improve contract during X-ray diagnostics of soft tissues, contrast agents are used. For example, the stomach and intestines are filled with barium sulphate BaSO4. Compare mass attenuation coefficients for soft tissues and for barium sulphate.

Q: Show that the coefficient of spontaneous emission Amt is given by Amt 8n he (v mt Bmf ?

A: Assume, T could be considered as the room temperature. N1 could be considered as the number of the…

Q: What is the energy in joules and eV of a photon in a radio wave from an AM station that has a…

A: Given, frequency of radio wave= 670–kHz we have to find the energy of the wave The energy of radio…

Q: X-rays are generated in a classic tube television, which has a voltage of 30 kW applied to its…

A: Which two fundamentally different processes mainly cause this X-ray radiation? Which of the two…

Q: 1. The mass difference between two isotopes is sometimes just a neutron mass. The spectrometer…

A: Let the mass of the two isotopes are m1 and m2. And radius of circles are r1 and r2. Given, r2 -…

Q: 12. A beam of 3-MeV photons with intensity 108 cm-2s-1 irradiates a small sample of water. (a) How…

A: Given: The beam of energy = 3Mev intensity (I) = 108 cm-2s-1 Now, A) The photon water interaction…

Q: Give at most one example of a solid-state dosimeter. a. Briefly describe the design of the dosimeter…

A: To determine: Summarize the dosimeter's construction, including its parts and the materials that…

Q: If the radius of the nucleus R = 1.2x 10^-13 cm, and known it is 1 fermi = 10^-13 cm, the nuclear…

A:

Q: An excited nucleus emits a gamma-ray photon with an energy of 2.55Mev. a) what is the photons…

A:

Q: 8. The quantum noise in x-ray imaging obeys Poisson distribution: NK e-N PK K! where: P is…

A: We have given the probability in possion distribution for X ray imaging. We want to calculate the…

Q: 1. Derive the relationship between half value layer (HVL) and linear attenuation coefficient (μ).…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: ing on a Geiger counter at 155 cm from a radiation source was 7.620 x 10^3 counts per minute (cpm).…

A: Given:- The distance of the Geiger counter from radiation sourced = 155 cm  The reading of the…

Q: At the beginning of an experiment, a scientist has 164 grams of radioactive goo. After 135 minutes,…

A:

Q: The intensity of radiation at 2m was 300 mR/hr. What would the exposure be at 4m? Oa. 1200 mR/hr Ob.…

A:

Q: 3. A radiation counter is calibrated using a 0.038-µCi carbon-14 standard; a count rate of 4,517 cpm…

A: Using the given data, dpmsource=0.038 μCi2220000 dpm1 μCi=84360 dpm

Q: Apply the four criteria for the inclusion of a variable (| theory || t-test || R² || Bias |) to…

A: In this question we have to apply the four criteria for the inclusion of a variable ( theory ||…

Q: The conducting rod of length L rotates about an axis passing through the center the rod at point P…

A: Let us consider the figure given below Total length of the rod=L Angular velocity of the rod=ω

Q: 1. Given the following SIR diagram, where h are some costly self-protective activities that people…

A:

Q: If a source of radiation had 1000 units of gamma radiation at 1 ft, what would the radiation level…

A: Given, The initial source of radiation,I1=1000 units Distance,d1=1 ft To find the radiation level at…

Q: A sample of rubidium gas of volume 1 x 10-8 cm3 is cooled until it forms a Bose-Einstein condensate.…

A: volume v = 10-8 cm3temp TB = 250n K FIND number of atom in sample

Q: 4. A company manufactures LED light bulbs. The lifetime for these bulbs is 4,600 hours with a…

A: I have used concept of z-score

Q: (3112 GULICUU 5. The neutron flux in a bare spherical reactor of radius 50 cm is given by 2M (@) = 0…

A: r=50 cm and D = 0.80cm

Q: 29. A shielded vial with a 0.1-mm thick lead shield contains 1. This shielded sample yields an…

A: 29 Given: The thickness of the lead is t=0.1 mm. The exposure rate with a shield at a distance of 3…

Q: 5. You figure the Radiation intensity without shielding is 78 mSv/h for a fellow CEDO's radiographic…

A: Concept used: HVL (half value layer) is the thickness at which value of intensity becomes 50% of its…

Q: 10. What is S/N ratio for a system that has a pressure of x psi and a sample standard deviation of…

A: In this question we have to find what is S/N ratio for a system that has a pressure of x psi and a…

Q: Suppose a radioactive nucleus has a half-life of 2 min. and suppose the counting rate at time t = 0…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: Smaller p-values indicate more evidence in support of the: A.quality of the researcher B.alternative…

A: Smaller p-values indicate more evidence in support of the reduction of variance. This is the…

Q: The linear absorption coefficients for 0.05-nm x-rays in lead and in iron are, respectively, 5.8 ×…

A: When high-energy beams like x-rays go through the material there will be a reduction of intensity…

Q: In an alpha particle scattering experiment, it is determined that the ratio of the cross-sectional…

A: cross sectional area of target nucleuscross sectional area of atom = 3.25×10-9radius of atom =…

Q: If a radiation source has an intensity of 6.50 Sv at 1.0 m, what distance is needed to decrease the…

A: Given that,radiation source has an intensity of 6.50 Sv at 1.0 mWe know that,Radiation intensity I…

Q: 1. What is the total energy of a proton whose kinetic energy is 4.65 GeV? What is it's wavelength?…

A:

Q: 137 What would afford the greatest protection from the Cs source, 10 cm or lead or 25 55 cm of…

A:

Q: 1. What is the Duane Hunt maximum x-ray frequency of a excitation voltage V = 6kV ?

A: The maximum frequency is f = eV/h

Q: If approximately 1% of the electric energy ends up in the x-ray beam ( a typical value), what is the…

A: Given: Potential Difference,V=70kV=70×103VCurrent,I=10mA=10×10-3ATime,t=0.75s Electrical energy is…

Q: 7. A PET scanner is built with 360 detectors around a ring, spaced 1° apart. They are numbered 1 on…

A:

Q: 2. Single photon emission computed tomography (SPECT) using lodine-123 is widely used for the study…

A: GivenSingle photon emission computed tomography (SPECT) using lodine-123 is widely used for the…