How does the thickness of the body part being radiographed relate to the attenuation of the x-rays?
Ans) The thickness of the body part being radiographed relate to the attenuation of the x-rays:
- The composition, thickness and shape of a structure all interact to influence what an object looks like on a radiograph. The density of the object being imaged determines how much of the x-ray beam will be absorbed. Dense structures absorb (attenuate) more of the x-ray beam than less dense structures.
How does the thickness of the body part being radiographed relate to the attenuation of the...
Beta rays incident on a specific material of mass thickness attenuation factor t = 0.33 g/cm2, and a mass thickness T = 0.18 g/cm2 . The percentage of radiation passes through the material (i.e., I(T)/I0 % ) is (two significant figures). Use equation 1 in the manual.
how does body organization complexity relate to body shape/size and physiological exchange with the environment?
Beta rays incident on a specific material of mass thickness attenuation factor t = 0.25 g/cm2, and a mass thickness T = 0.13 g/cm2 . The percentage of radiation passes through the material (i.e., I(T)/I0 % ) is (two significant figures). Use equation 1 in the manual. I got 97% apparently thats wrong.
8. If the thickness needed by a certain medium to reduce the intensity of incident x-rays by 40% is 150 cm, what is the attenuation coefficient of the medium?
a) Define the terms linear ottenuation coefficient and mass attenuation coefficient and state the 6. units of measurement of each quantity. b) A layer of homogeneous material with physical density p and linear attenuation coefficient μ has uniform thickness t.A narrow beam of monoenergetic x-radiation is incident on this layer at right angles. State the relationship between the transmitted intensity Ivan and the incident e. Hence obtain an expression for the attenuation A defined as A = 1 intensity c)...
Nervous System: How does being "cephalized" relate to this? Choose 3 animal phyla that each have a different nervous system organization and explain their differences. If asked, could you describe or answer questions about an action potential (resting membrane potential, threshold, depolarize, repolarize, hyperpolarize)? Body Support: • What supports the shape/structure of Poriferans, Cnidarians, Arthropods, and Chordates? Muscles: • What does it mean to say a muscle has voluntary control? Give an example. What does it mean to say a...
Part A How long does it take the Sun to melt a block of ice at 0∘C with a flat horizontal area 1.0 m2 and thickness 2.0 cm ? Assume that the Sun's rays make an angle of 44 ∘ with the vertical and that the emissivity of ice is 0.050. Express your answer to two significant figures and include the appropriate units. 2.12min , or 127.7s, or 130s incorrect
Relate the body and organ systems of the pig to that of humans. How is the pig anatomy similar to the human? How is it different?
A CaF, dosimeter is enclosed in equilibrium-thickness walls of A1 to measure the dose to Si under TCPE conditions in a field of 6-MeV y-rays. Neglecting x-ray attenuation, if the average dose in the CaF, is 30 Gy, what is the Si dose? Assume that the CaF, is (a) small (Burlin's d = 1) or (b) large (d = 0).
The mass attenuation coefficient for 200 keV x-rays in iron is .1460cm2/g. The density of iron is 7.874 g/cm3. If 104200 keV x-ray photons are incident on an iron plate 1.50 cm thick, how many x-ray photons will pass through the plate