Radiographic Pathology Ch. 8 Central Nervous
System Questions and Answers| Latest Update
Most of the brain's blood is supplied anteriorly via the ____ and posteriorly via the ____ ✔️✔️-
internal carotid arteries
-vertebral arteries
Capillaries prevent passage of unwanted substances into the brain through a special function
called ____ ✔️✔️the blood-brain barrier
Blood vessels such as the ____ commonly cause radiolucent impressions on the inner table of
the cranial vault in conventional radiography ✔️✔️middle meningeal artery
Some things viewable on conventional radiographs for the central nervous system
✔️✔️Fractures, middle meningeal artery, sella turcica, pituitary fossa, pineal gland, choroid
plexus, falx cerebri, spinal cord
Modality of choice for a wide variety of conditions related to the CNS ✔️✔️MRI
MRI is better than CT in evaluation of... ✔️✔️stroke, cranial tumors, and infections
Sub-modality used to evaluate the vascular anatomy of the head and neck ✔️✔️Magnetic
resonance angiography (MRA)
Sub-modality used to correlate and map motor functions to specific locations in the brain
✔️✔️Functional MRI (fMRI)
Sub-modality involving monitoring the extent to which water can freely move in any volume
element (voxel) ✔️✔️Diffusion-weighted imaging (DWI)
, Sub-modality that capitalizes on the expected relative increase in restricted water molecules
among neurologic fiber tracts by acquiring a three-dimensional map of the fiber tracts with a
postprocessing technique referred to as tractography ✔️✔️Diffusion-tensor imaging (DTI)
Sub-modality involving the use of paramagnetic contrast agents to assess the cerebral
hemodynamic status of a patient by utilizing acquisition times that are short enough to capture
the changes in signal intensity as a bolus of contrast material passes through the brain
✔️✔️Perfusion-weighted imaging (PWI)
____ within a tumor can also be measured and compared with the contralateral normal white
matter, typically displayed on color maps ✔️✔️Relative cerebral blood volume (rCBV)
Modality that plays a significant role in CNS evaluation. Excellent contrast resolution allows
ready differentiation among sulci, ventricles, and gray/white matter ✔️✔️CT
Modality useful in evaluating the brains of neonates before closure of the fontanels because
the fibrous tissue covering the fontanels provides a window into the brain ✔️✔️Sonography
Modality where radionuclide brain scans are primarily used to confirm brain death in patients
with the appropriate clinical signs ✔️✔️Nuclear Medicine
Sub-modality being used experimentally to assess tumors, areas affected by stroke/ischemia,
and Alzheimer's disease ✔️✔️SPECT
Congenital and Hereditary Diseases
Condition in which the bony neural arch that encloses and protects the spinal cord is not
completely closed ✔️✔️Spina Bifida
System Questions and Answers| Latest Update
Most of the brain's blood is supplied anteriorly via the ____ and posteriorly via the ____ ✔️✔️-
internal carotid arteries
-vertebral arteries
Capillaries prevent passage of unwanted substances into the brain through a special function
called ____ ✔️✔️the blood-brain barrier
Blood vessels such as the ____ commonly cause radiolucent impressions on the inner table of
the cranial vault in conventional radiography ✔️✔️middle meningeal artery
Some things viewable on conventional radiographs for the central nervous system
✔️✔️Fractures, middle meningeal artery, sella turcica, pituitary fossa, pineal gland, choroid
plexus, falx cerebri, spinal cord
Modality of choice for a wide variety of conditions related to the CNS ✔️✔️MRI
MRI is better than CT in evaluation of... ✔️✔️stroke, cranial tumors, and infections
Sub-modality used to evaluate the vascular anatomy of the head and neck ✔️✔️Magnetic
resonance angiography (MRA)
Sub-modality used to correlate and map motor functions to specific locations in the brain
✔️✔️Functional MRI (fMRI)
Sub-modality involving monitoring the extent to which water can freely move in any volume
element (voxel) ✔️✔️Diffusion-weighted imaging (DWI)
, Sub-modality that capitalizes on the expected relative increase in restricted water molecules
among neurologic fiber tracts by acquiring a three-dimensional map of the fiber tracts with a
postprocessing technique referred to as tractography ✔️✔️Diffusion-tensor imaging (DTI)
Sub-modality involving the use of paramagnetic contrast agents to assess the cerebral
hemodynamic status of a patient by utilizing acquisition times that are short enough to capture
the changes in signal intensity as a bolus of contrast material passes through the brain
✔️✔️Perfusion-weighted imaging (PWI)
____ within a tumor can also be measured and compared with the contralateral normal white
matter, typically displayed on color maps ✔️✔️Relative cerebral blood volume (rCBV)
Modality that plays a significant role in CNS evaluation. Excellent contrast resolution allows
ready differentiation among sulci, ventricles, and gray/white matter ✔️✔️CT
Modality useful in evaluating the brains of neonates before closure of the fontanels because
the fibrous tissue covering the fontanels provides a window into the brain ✔️✔️Sonography
Modality where radionuclide brain scans are primarily used to confirm brain death in patients
with the appropriate clinical signs ✔️✔️Nuclear Medicine
Sub-modality being used experimentally to assess tumors, areas affected by stroke/ischemia,
and Alzheimer's disease ✔️✔️SPECT
Congenital and Hereditary Diseases
Condition in which the bony neural arch that encloses and protects the spinal cord is not
completely closed ✔️✔️Spina Bifida
