MRI images that are based on the differences in longitudinal relaxation characteristics of tissues are known as
Tl weighted images
T2 weighted images
Proton density weighted images
Transitional images
MRI images that are based on the differences in the amount of hydrogen nuclei in tissues are known as
TI weighted images
MRl images that are based on the differences in the transverse relaxation characteristics of tissues are known as
Spin density weighted images
The image parameter that primarily affects TI weighting is
Echo time
Inversion time
Repetition time
None of the above
The image parameter that primarily affects T2 weighting is
In a TI weighted image, a short TR is used to
Maximize T2 effects
Minimize T2 effects
Maximize T1 effects
Minimize T1 effects
In a T2 weighted image, a long TR is used to
In a T2 weighted image, a long TE is used to
In a T1 weighted image, a short TE is used
In a T1 weighted image, tissues with short T1 relaxation times produce what type of signal
High
Low
Intermediate
In a Tl weighted image, tissues with long Tl relaxation times produce what type of signal?
In a T2 weighted image, tissues with short T2 relaxation times appear
Hyperintense
Hypointense
Isointense
In a T2 weighted image, tissues with long T2 relaxation times appear
In a proton density weighted image, tissues with a high number of hydrogen nuclei appear
In a proton density weighted image, tissues with a low number of hydrogen nuclei appear
In biological tissue, which type of relaxation occurs the quickest?
T2 relaxation
T2* relaxation
Tl relaxation
Longitudinal relaxation occurs more efficiently in which type of tissue?
Water
Fat
Muscle
Cortical bone
In a Tl weighted image, fat has a _____ Tl relaxation time and therefore appears _____
Long, Bright
Long, Dark
Short, Dark
Short, Bright
In a Tl weighted image, CSF has a ____ Tl relaxation time and therefore appears _____
In a T2 weighted image, fat has a ____ T2 relaxation time and therefore appears _____
In a T2 weighted image, CSF has a ____ T2 relaxation time and therefore appears ____
A spin echo image with a long TR and a short TE is known as what type of image?
T1 weighted image
Proton density weighted image
Spin density weighted image
Proton density weighted image & Spin density weighted image
A spin echo image with a long TR and a long TE is known as what type of unage?
T2 weighted image
A spin echo image with a short TR and a short TE is known as what type of iInage?
Tl weighted image
Another name for a proton density weighted image is
Spin density
Inversion recovery
Spin density & Intermediate
On a TI weighted image of the brain, fat appears ____ to white matter.
On a TI weighted image of the brain, white matter appears ____ to grey matter
On a TI weighted image of the brain, grey matter appears to CSF
On a TI weighted image of the brain, CSF appears _____ to fat
lsointense
On a proton density weighted image of the brain, white matter appears ____ to grey matter
On a proton density weighted image of the brain, CSF appears ____ to grey matter
On a T2 weighted image of the brain, CSF appears ____ to grey matter
On a T2 weighted image of the brain, grey matter appears ____ to white matter
On a TI weighted image of the knee, cortical bone appears ____ to all other tissues
On a TI weighted image of the knee, bone marrow appears ____ to meniscal tissues.
On a Tl weighted image of the spine, the intervertebral disk appears ____ to spinal cord.
On a T2 weighted image of the spine, the intervertebral disk appears ____ to the spinal cord
At a field strength of 1.0 tesla, the approximate Tl relaxation time of fat is
180 ms
270 ms
360 ms
390 ms
At a field strength of 1.0 tesla, the approximate T2 relaxation time of fat is
40 ms
50 ms
80 ms
90 ms
At a field strength of 1.0 tesla, the approximate T1 relaxation time of liver tissue is
At a field strength of 1.0 tesla, the approximate T2 relaxation time of liver tissue is
60 ms
70 ms
At a field strength of 1.0 tesla, the approximate T1 relaxation time for spleen tissue is
380 ms
400 ms
480 ms
At a field strength of 1.0 tesla, the approximate T2 relaxation time for spleen tissue is
100 ms
At a field strength of 1.0 tesla, the approximate T1 relaxation time for grey matter is
450 ms
520 ms
620 ms
At a field strength of l.0 tesla, the approximate T2 relaxation time for grey matter is
At a field strength of 1.0 tesla, the approximate T1 relaxation time for white matter is
At a field strength of 1.0 tesla, the approximate T2 relaxation time for white matter is
140 ms
At a field strength of 1.0 tesla, the approximate T1 relaxation time for renal cortex tissue is
At a field strength of 1.0 tesla, the approximate T2 relaxation time for renal cortex tissue is
45 ms
At a field strength of 1.0 tesla, the approximate T1 relaxation time for muscle tissue is
600 ms
680 ms
At a field strength of 1.0 tesla, the approximate T2 relaxation time for muscle tissue is
At a field strength of 1.0 tesla, the approximate Tl relaxation time for renal medulla tissue is
800 ms
At a field strength of 1.0 tesla, the approximate T2 relaxation time for renal medulla tissue is
300 ms
At a field strength of 1.0 tesla, the approximate Tl relaxation time for blood is
540 ms
1000 ms
At a field strength of 1.0 tesla, the approximate T2 relaxation time for blood is
240 ms
At a field strength of 1.0 tesla, the approximate Tl relaxation time for CSF is
2000 ms
2500 ms
At a field strength of 1.0 tesla, the approximate T2 relaxation time for CSF is
At a field strength of 1.0 tesla, the approximate T1 relaxation time for water is
At a field strength of 1.0 tes1a, the approximate T2 relaxation time for water is
2500ms
Figure 3-1 displays which type of relaxation curve?
T1 Relaxation curve
T2 relaxation curve
Inversion recovery curve
Figure 3-2 displays which type of relaxation curve?
TI relaxation curve
Figure 3-3 displays which type of relaxation curve?
T1 relaxation curve
In Figure 3-4, at a TR of 200, which of the following tissues has the greatest signal intensity?
Tissue A
Tissue B
Tissue C
In figure 3-5, at a TE of 90, which of the following tissues has the greatest signal intensity?
Figure 3-6 displays which type of relaxation curve?
T2* relaxation curve