DMI 112 Test 6 Chapter 6 CCD/CMOS Image Capture correctly answered

DMI 112 Test 6 Chapter 6 CCD/CMOS
Image Capture

A charge-coupled device (CCD) does all of the following except:

a) Reduce the size of the projected light image

b) Transfer the image to a capacitor

c) Convert light into x-ray photons

d) act as receptors via lenses or fiber optics - correct answer ✔✔c) Convert light into x-ray photons



The number of electron/hole pairs is related to the amount of:

a) light absorbed

b) electric charge

c) incident x-rays

d) reflected light - correct answer ✔✔a) light absorbed



The layer in a CCD chip that contains the electron gates is the:

a) silicon dioxide layer

b) polysilicon layer

c) silicon substrate

d) all of the above - correct answer ✔✔b) polysilicon layer



The insulating layer in a CCD chip is the:

a) polygonal layer

b) silicon substrate

c) silicon dioxide layer

d) monosilicon layer - correct answer ✔✔c) silicon dioxide layer

, A system that used scintillators that convert x-rays to light, light to electric charge, and store the charge
in capacitors is known as a:

a) CCD

b) ADC

c) image intensifier

d) CMOS - correct answer ✔✔d) CMOS



A solid chemical element or compound doped with impurities that make it highly conductive is known as
a:

a) dopant

b) semiconductor

c) transistor

d) capacitor - correct answer ✔✔b) semiconductor



Most CMOS detectors use both N-type and P-type transistors to form the electrically controlled gate.

a) true

b) false - correct answer ✔✔a) true



Which of the two technologies, CCDs or CMOS, is more susceptible to noise, has a lower light sensitivity,
uses very little power, and is inexpensive to manufacture?

CCD

CMOS - correct answer ✔✔CMOS



The oldest indirect systems used (CCD or CMOS) to acquire the image. - correct answer ✔✔CCD



Light is sent from the scintillator to the CCD via: - correct answer ✔✔lenses or fiber optics



A CCD converts ___ to ___ - correct answer ✔✔light to electrons (then electric charge)