(TCO 3) Which of the following best defines a data communication
A format description of a set of rules and conventions in data
A device that is connected to a computer to provide auxiliary
6.1 A CT calibration experiment measures two Hounsfield numbers: h m =10 for water and
=1100 for air.
(a) Find expressions for a and b so that
b = 0 10
b = -10
3.5 Consider an organ with a tumor in imaged. In the resulting image, the organ has intensity I0, and the
tumor has intensity It > I0. Which of the following methods can improve the local contrast if the organ is
7.1 Show that 1u is equivalent to 931 MeV.
1 u = 931 MeV
Rest mass of electron = 511 keV
mp = 1.00726 u
me = 0.000548
Rme 511 keV
1u= 931 M eV
7.5 Consider the problem in Example 7.1 suppose we have 1
12.1 A non-uniform magnetic field B pointing in the z-direction is applied to a sample of protons. The
field B (in Tesla) varies as a function of z(in cm):
B(z)= 1 + 0.5z.
The magnetization vector M precesses around z-
Homework # 4
10.1 Suppose a steady-state sinusoidal wave with frequency 2-MHz is travel in the +z direction in the bone.
What is the wavelength? c= 4080 m/s in the bone
c 4080 ms1
f 2106 Hz
10.3 Suppose medium 1 is f
4.6 Ultraviolet light is defined as electromagnetic waves having wavelengths in the range of 4-400 nanometers.
(a) Determine the frequency range of ultraviolet light.
(b)Determine the photon energy range of ultraviolet
BMET Radiology Test
(TCO 1) What is the name of the medical imaging system that uses an emission signal from a
human body to create the image of the organ?
Answer: PET imaging
Explanation: PET images use the radioisotopes injected to the human body that e