Mosby’s Exam Review for CT – Imaging Procedures
| Comprehensive Study Guide with Practice
Questions & Detailed Answers | 2025 Updated
Edition
Typical protocol for CT-brain for a pt w/ Hx of dizziness - ANSW✔-2.5-mm × 2.5-mm sections through
the posterior fossa, 5 mm × 5 mm to vertex
What is the scout (localizer) projection used to prescribe an axial CT acquisition of the brain? -
ANSW✔-LAT scout
Glioma is a general term used to describe a group of primary tumors. Consisting of malignant glial cells,
gliomas occur in - ANSW✔-the brain
Which of the following patient positions may have been used to produce this scout image of the head? -
ANSW✔-Supine (hyperextend neck) & Prone (head and neck resting on chin). Coronal CT images may
be produced in either case with the imaging plane positioned parallel to the coronal plane of the
patient's head
#1 - ANSW✔-POST clinoid process
,#3 - ANSW✔-EAM (External Auditory Meatus)
WW & WL to display the dense bone of the mastoid tip & IAC (Internal Auditory Canal) - ANSW✔-
(WW: 4,000) (WL: +250)
SFOV for CT- temporal bones & IAC - ANSW✔-Head (25-cm =250-mm)
Common areas of calcification w. in brain - ANSW✔-(1) choroid plexus (2) pineal gland
Following the injection of intravenous contrast media during a CT examination of the brain, which
anatomic areas enhance? - ANSW✔-Areas with good blood supply. Such as, cranial blood vessels (ANT
COM Artery), choroid plexus, and dura mater.
during CT-brain w/ IVCM, why doesn't the POST horn of the lateral ventricles enhance? - ANSW✔-
because it contains CSF
Requires IVCM - ANSW✔-(1) headaches R/O meningioma (2) loss of vision R/O astrocytoma (3) lung
CA R/O metastases
Does NOT require IVCM - ANSW✔-S/P MVA 3 days ago ; subdural hematoma (hyperdense)
Epinephrine, aka adrenaline - ANSW✔-hormone secreted by the medulla of the adrenal glands
Pituitary gland - ANSW✔-aka hypophysis, seated w.in the sella turcica, pituitary gland is attached to
the hypothalamus because of the infundibulum
patient positioning for CT-study of the brain - ANSW✔-Supine & head 1st
, Cerebralspinal fluid(CSF) is produced in the: - ANSW✔-Choroid plexus. located in each of the 4
ventricles of the brain
stereotactic biopsy unit - ANSW✔-specialized units designed specifically for CT-guided biopsies. Most
commonly used for intracranial tumors, for which precision & accuracy are extremely important
lateral rectus muscle - ANSW✔-#2
Ethmoid sinuses - ANSW✔-#3
(1) orbits (2) paranasal sinuses - ANSW✔-The image is part of a series that could be used to evaluate?
optic nerve - ANSW✔-#6
Nasal bone - ANSW✔-#9
Source images for CT-brain - ANSW✔-acq parallel to skull base. patient positioning (supine) w. chin
down. source images (axial) acquired 15° above IOML
Acoustic neuroma (schwannoma) - ANSW✔-arises from Schwann cells of the 8th cranial nerve aka
vertibulocochlear nerve. Acoustic neuroma, cranial mass, imaged w. CT exam of IAC
Alzheimer's disease - ANSW✔-NOT easily diagnosed on CT-brain.
When viewing CT-brain images, enlargement of the temporal horns are present in - ANSW✔-
Alzheimer's disease pt's
pathological conditions easily seen on CT-brain - ANSW✔-(1) Astrocytoma (2) Traumatic hemorrhage
(3) Cerebral infarct
| Comprehensive Study Guide with Practice
Questions & Detailed Answers | 2025 Updated
Edition
Typical protocol for CT-brain for a pt w/ Hx of dizziness - ANSW✔-2.5-mm × 2.5-mm sections through
the posterior fossa, 5 mm × 5 mm to vertex
What is the scout (localizer) projection used to prescribe an axial CT acquisition of the brain? -
ANSW✔-LAT scout
Glioma is a general term used to describe a group of primary tumors. Consisting of malignant glial cells,
gliomas occur in - ANSW✔-the brain
Which of the following patient positions may have been used to produce this scout image of the head? -
ANSW✔-Supine (hyperextend neck) & Prone (head and neck resting on chin). Coronal CT images may
be produced in either case with the imaging plane positioned parallel to the coronal plane of the
patient's head
#1 - ANSW✔-POST clinoid process
,#3 - ANSW✔-EAM (External Auditory Meatus)
WW & WL to display the dense bone of the mastoid tip & IAC (Internal Auditory Canal) - ANSW✔-
(WW: 4,000) (WL: +250)
SFOV for CT- temporal bones & IAC - ANSW✔-Head (25-cm =250-mm)
Common areas of calcification w. in brain - ANSW✔-(1) choroid plexus (2) pineal gland
Following the injection of intravenous contrast media during a CT examination of the brain, which
anatomic areas enhance? - ANSW✔-Areas with good blood supply. Such as, cranial blood vessels (ANT
COM Artery), choroid plexus, and dura mater.
during CT-brain w/ IVCM, why doesn't the POST horn of the lateral ventricles enhance? - ANSW✔-
because it contains CSF
Requires IVCM - ANSW✔-(1) headaches R/O meningioma (2) loss of vision R/O astrocytoma (3) lung
CA R/O metastases
Does NOT require IVCM - ANSW✔-S/P MVA 3 days ago ; subdural hematoma (hyperdense)
Epinephrine, aka adrenaline - ANSW✔-hormone secreted by the medulla of the adrenal glands
Pituitary gland - ANSW✔-aka hypophysis, seated w.in the sella turcica, pituitary gland is attached to
the hypothalamus because of the infundibulum
patient positioning for CT-study of the brain - ANSW✔-Supine & head 1st
, Cerebralspinal fluid(CSF) is produced in the: - ANSW✔-Choroid plexus. located in each of the 4
ventricles of the brain
stereotactic biopsy unit - ANSW✔-specialized units designed specifically for CT-guided biopsies. Most
commonly used for intracranial tumors, for which precision & accuracy are extremely important
lateral rectus muscle - ANSW✔-#2
Ethmoid sinuses - ANSW✔-#3
(1) orbits (2) paranasal sinuses - ANSW✔-The image is part of a series that could be used to evaluate?
optic nerve - ANSW✔-#6
Nasal bone - ANSW✔-#9
Source images for CT-brain - ANSW✔-acq parallel to skull base. patient positioning (supine) w. chin
down. source images (axial) acquired 15° above IOML
Acoustic neuroma (schwannoma) - ANSW✔-arises from Schwann cells of the 8th cranial nerve aka
vertibulocochlear nerve. Acoustic neuroma, cranial mass, imaged w. CT exam of IAC
Alzheimer's disease - ANSW✔-NOT easily diagnosed on CT-brain.
When viewing CT-brain images, enlargement of the temporal horns are present in - ANSW✔-
Alzheimer's disease pt's
pathological conditions easily seen on CT-brain - ANSW✔-(1) Astrocytoma (2) Traumatic hemorrhage
(3) Cerebral infarct
