The pituitary gland is best demonstrated during CT in which of the following imaging
planes?
a. axial
b. coronal
c. sagittal
d. transaxial
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b. coronal
The coronal plane provides the best visualization of the pituitary gland with
regard to its position within the sella turcica and involves less partial
volume averaging of the pituitary with surrounding structures than scans
obtained in the axial plane.
,The water soluble oral contrast agent used for CT scans of the abdomen and pelvis
should contain approximately _____ iodine.
a. 2 to 5%
b. 8 to 12%
c. 15 to 20%
d. 25 to 40%
Give this one a try later!
a. 2 to 5%
A solution of 2 to 5% iodinated water soluble contrast agent and water
provide sufficient bowel opacification for CT studies of the abdomen and
pelvis. Some institutions may used flavored contrast agent or had a
flavoring agent of the solution for ease of consumption. Common water
soluble contrast media include Gastrografin and Hypaque.
Which of the following scan parameters is commonly used during a radiation therapy
planning CT study of the prostate gland?
1. patient placed on a flat tabletop
2. small DFOV used to include only the prostate gland
3. CT scan performed with patient and exact position used for radiation treatment
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2, and 3
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, c. 1 and 3 only
CT scans are commonly performed for radiation therapy planning. The
purpose of the exam as to precisely locate the areas of interest for
therapeutic treatment with irradiation. It is important that the patient
position during the CT exam is exactly the same as they used during
radiation therapy. This includes using a flat table top, via a board or foam
insert. Equally important is the DFOV chosen by the technologist. It must be
large enough to include the entire surface of the anatomic part.
The most common indication for CT guided radiofrequency ablation (RFS) is in
treatment of neoplasms involving the:
a. internal auditory canal
b. uterus
c. lungs
d. liver
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d. liver
The most common indication for CT guided RFA is in treatment of hepatic
neoplasm.
Coronal imaging through the paranasal sinuses is typically performed at the plane of
imaging:
a. parallel to the infraorbital meatal line
b. perpendicular to the glabellomeatal line
c. parallel to Reid's baseline
d. perpendicular to the hard palate
Give this one a try later!
, d. perpendicular to the hard palate
The imaging plan should be positioned perpendicular to the hard palate
for coronal evaluation of the paranasal sinuses. This may be achieved by
positioning the patient in either the supine, head extended back position,
or with a patient in the prone position. In either case, appropriate
angulation of the gantry can help achieve an acquisition angle that is
perpendicular to the hard palate. Alternatively MPR images maybe
produced at an angle perpendicular to the axial acquisition, also resulting
in coronal images through the paranasal sinuses.
79
Figure 5-6
Pg. 123
Give this one a try later!
A
HRCT acquisitions of the chest should be performed with thin sections,
within the range of 1-2mm
High-resolution CT examinations of the temporal bones and internal auditory canal
should include which of the following technical parameters?
1. 3 to 5 mm section width
2. small (less than 10 cm) targeted DFOV
3. soft tissue kernel
a. 1 only
b. 2 only
planes?
a. axial
b. coronal
c. sagittal
d. transaxial
Give this one a try later!
b. coronal
The coronal plane provides the best visualization of the pituitary gland with
regard to its position within the sella turcica and involves less partial
volume averaging of the pituitary with surrounding structures than scans
obtained in the axial plane.
,The water soluble oral contrast agent used for CT scans of the abdomen and pelvis
should contain approximately _____ iodine.
a. 2 to 5%
b. 8 to 12%
c. 15 to 20%
d. 25 to 40%
Give this one a try later!
a. 2 to 5%
A solution of 2 to 5% iodinated water soluble contrast agent and water
provide sufficient bowel opacification for CT studies of the abdomen and
pelvis. Some institutions may used flavored contrast agent or had a
flavoring agent of the solution for ease of consumption. Common water
soluble contrast media include Gastrografin and Hypaque.
Which of the following scan parameters is commonly used during a radiation therapy
planning CT study of the prostate gland?
1. patient placed on a flat tabletop
2. small DFOV used to include only the prostate gland
3. CT scan performed with patient and exact position used for radiation treatment
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2, and 3
Give this one a try later!
, c. 1 and 3 only
CT scans are commonly performed for radiation therapy planning. The
purpose of the exam as to precisely locate the areas of interest for
therapeutic treatment with irradiation. It is important that the patient
position during the CT exam is exactly the same as they used during
radiation therapy. This includes using a flat table top, via a board or foam
insert. Equally important is the DFOV chosen by the technologist. It must be
large enough to include the entire surface of the anatomic part.
The most common indication for CT guided radiofrequency ablation (RFS) is in
treatment of neoplasms involving the:
a. internal auditory canal
b. uterus
c. lungs
d. liver
Give this one a try later!
d. liver
The most common indication for CT guided RFA is in treatment of hepatic
neoplasm.
Coronal imaging through the paranasal sinuses is typically performed at the plane of
imaging:
a. parallel to the infraorbital meatal line
b. perpendicular to the glabellomeatal line
c. parallel to Reid's baseline
d. perpendicular to the hard palate
Give this one a try later!
, d. perpendicular to the hard palate
The imaging plan should be positioned perpendicular to the hard palate
for coronal evaluation of the paranasal sinuses. This may be achieved by
positioning the patient in either the supine, head extended back position,
or with a patient in the prone position. In either case, appropriate
angulation of the gantry can help achieve an acquisition angle that is
perpendicular to the hard palate. Alternatively MPR images maybe
produced at an angle perpendicular to the axial acquisition, also resulting
in coronal images through the paranasal sinuses.
79
Figure 5-6
Pg. 123
Give this one a try later!
A
HRCT acquisitions of the chest should be performed with thin sections,
within the range of 1-2mm
High-resolution CT examinations of the temporal bones and internal auditory canal
should include which of the following technical parameters?
1. 3 to 5 mm section width
2. small (less than 10 cm) targeted DFOV
3. soft tissue kernel
a. 1 only
b. 2 only
