Point spread function psf - Study guides, Class notes & Summaries

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...

Medical Physics Exam 1 With Correct Questions And Answers 2024

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...

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 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...

2024 VA HIC License Exam Prep Protruding objects may not protrude more than ___ inches into the path of travel. - ANS 4" ANSI Accessible and Usable Buildings and Facilities, 2017 Page 15 In new buildings, thresholds at doorways should be no higher than ______. - ANS 1/2" ANSI Accessible and Usable Buildings and Facilities, 2017 Page 30 In a Type A unit, if measuring to the highest part of the rim or highest part of the counter, what is the maximum h...