How does an MRI produce an image?
Q: . Determine the amount of time it takes for X-rays of frequency 2.9.1018 Hz to travel (a) 1.3 mm and…
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Q: If n= 1.30, what is the largest angle of incidence 0, for which total internal reflection will occur…
A: When light travels from one medium to another it undergoes refraction, the angle of refraction is…
Q: #2: You are standing in front of a mirror and is shocked to see that you look like an alien from…
A: Given: A person standing infront of mirror is shocked to see that his head is enlarged and legs are…
Q: Calculate the time delay between an axial ray a ray that enters a 1-km long fiber at an angle of…
A: Given that: Length of the fiber:L=1 km=1000m Refractive index of the core: ncore=1.48 Angle of…
Q: Given that the angular momentum operator L is defined as a cross product of position operator X and…
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Q: A patient 12 in thick is positioned on a table 15 in from the target of an x-ray tube. The region of…
A: The objective of the question is to determine whether the entire region of interest in the patient…
Q: Compute the ratio of intensities emerging from an aluminum plate 1.00 mm thick if the incident beam…
A: The objective of the question is to calculate the ratio of intensities of x-rays emerging from an…
Q: he dimension of a wall-mounted image is inches (H x W). How quickly must an observer move in the…
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Q: In digital radiography what replaces the intraoral film?
A: Digital radiography: The radiography in which X-ray sensitive plates are used to capture the data…
Q: Discuss the advantages of digital radiography vs conventional film
A: Digital radiography is a non-destructive technique used for the diagnosis of internal organs and it…
Q: 137 What would afford the greatest protection from the Cs source, 10 cm or lead or 25 55 cm of…
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Q: There was a major collision of an asteroid with the Moon in medieval times. It was described by…
A: Collision A collision is any circumstance in which two or more bodies quickly exert forces upon one…
Q: What are the attributes of DPN in comparision to standard lithography
A: Dip Pen Nanolithography (DPN), a direct-write soft lithography method, is used to develop…
Q: mat maximum tension could this fiber support without breaking? press your answer with the…
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Q: How does the NA of a microscope compare with the NA of an optical fiber?
A: Given How does the NA of a microscope compare with the NA of an optical fiber, as following below.
Q: A certain technique calls for 50 mA and 0.1 s at 65 kV. If we have an uncooperative patient and wish…
A: (A)The energy input must be same. Energy = (V× I × t). As voltage is fixed, the term (I×t) (0.1×…
Q: What role does the coherence of light play in holography?
A: The cognizance of light assumes a urgent part in holography, a strategy used to make three-layered…
How does an MRI produce an image?
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- When working with thermal infrared systems, if the targets in a scene have the same kinetic (i.e. physical) temperature will they also have the same brightness in the resulting image?Ordinary X-ray photographs cannot produce sharp images of internal organs whose densities are not varying significantly from their surroundings. What technique overcomes this problem?In relation to x-ray imaging, which of the following statements is true? Choose one answer. a. The linear attenuation coefficient of a material is directly proportional to its half value thickness. b. For clinically useful x-rays, lead has a greater half value thickness than soft tissue. c. The intensity of an x-ray beam decreases exponentially as it passes through tissue. d. The intensity of an x-ray beam increases exponentially as it passes through tissue. e. Good contrast media are generally poor absorbers of X-rays. and Why??