Point spread function psf Study guides, Class notes & Summaries
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![NSC Final Exam Questions and Answers](/docpics/4563352/65d634218cc29_4563352_121_171.jpeg)
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NSC Final Exam Questions and Answers
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NSC Final Exam Questions and Answers 
 
Airy disc - Answer-- Light passing through an aperture (ex. objective) is diffracted 
- Light from single point will create pattern of rings 
(image is actually a diffraction pattern of an object) 
 
What part of airy pattern has the highest portion (84%) of the light intensity? - Answer-The central part (0 order) 
- light intensity decreases with increasing order number 
0 peak = 84%; most intensity 
100% = zero order peak + 1 order + 2 order.... 
 
Point...
![NSC Final Exam Questions and Answers](/docpics/4614046/65de0747694fb_4614046_121_171.jpeg)
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NSC Final Exam Questions and Answers
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NSC Final Exam Questions and Answers 
 
Point spread function (PSF) - Answer-Spread of intensity due to microscope; should be symmetrical 
- If not well aligned, microscope can't reach optimum resolution 
 
Rayleigh criterion - Answer-2 points are "resolved": 
- Minimum of the 0 order peak of the 1st airy disk equals the maximum of the 0 order peak of the 2nd airy disk 
 
theoretical dxy = - Answer-full width at half max of zero order peak 
(resolution depends on how broad this zero order pe...
![Mosby's Exam Review for CT 2024 Exam All Possible Questions and Answers with complete solution](/docpics/5331972/6646ef5e93b85_5331972_121_171.jpeg)
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Mosby's Exam Review for CT 2024 Exam All Possible Questions and Answers with complete solution
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Mosby's Exam Review for CT 
180-dgree linear interpolation (180 LI) - Answer-Type of algorith used for MSCT image reconstruction in 
which data acquired from a shorter distance (180 degrees) away from the reconstructed slice location 
are interpolated. 
absorbed dose - Answer-the amount of x-ray energy absorbed in a unit of mass. It is measured in grays. 
(Gy) 
360-degree linear interpolation (360 LI) - Answer-type of algorithm used for MSCT image reconstruction 
in which two sets of projection...
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NSC Final Exam Questions and Answers 2023-2024
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Resolution - Answer-how close two objects can be brought together and still be visualized as two distinct objects 
 
Smaller resolution value = - Answer-better resolution 
 
What does resolution depend on? - Answer-- size of the object 
- contrast between the two objects 
 
Airy disc - Answer-- Light passing through an aperture (ex. objective) is diffracted 
- Light from single point will create pattern of rings 
(image is actually a diffraction pattern of an object) 
 
What part of airy pattern...
![Medical Physics Exam 1 With Correct Questions And Answers 2024](/docpics/5244481/663ce17e4907f_5244481_121_171.jpeg)
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Medical Physics Exam 1 With Correct Questions And Answers 2024
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Medical Physics Exam 1 With Correct Questions And Answers 2024
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