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DU PA Neuroradiology
Duke PA Neuroradiology
| Question | Answer |
|---|---|
| if you are ordering a skull radiograph there is a strong chance that __ | you are doing the wrong thing |
| indications for skull radiographs | pre-MRI, pre-surgical planning |
| __ accounts for 80% of head trauma deaths in <2 yo | child abuse |
| when do you care about radiation the most | pregnancy and kids |
| fat is bright on __ MRI | T1 |
| fluid is bright on __ MRI | T2 |
| H2O is bright on __ MRI | T2 |
| contrast injected in subarachnoid space, viewed under fluroscopy or CT | myelography |
| reasons for doing myelography instead of MRI for evaluation of spinal cord abnormalities | can't do an MRI for any reason (obesity, embeded metal, pacemaker) MRI is first choice when possible |
| contrast injected into blood vessels under fluoroscopy | angiography |
| indications for angiography | vessel blood flow, vessel anatomy, interventions |
| __ much more common than angiography | CTA and MRA |
| indications for nuclear imaging | blood flow, brain activity (alzheimer disease, parkinson, epilepsy) |
| radiopharmaceuticals localize in tissue, emit detectable radiation | nuclear imaging |
| __ is draped just lateral to the lateral ventricles | caudate |
| when there is a lack of reabsorption of CSF | non-obstructive hydrocephalus |
| __ is a star | supersellar cistern |
| __ smiles at you if there is no problem | quadrigeminal cistern |
| modality of choice for head trauma | noncontrast CT |
| why use noncontrast CT when evaluating head trauma | contrast shows up the same as blood on CT |
| 5 emergency questions to aske when viewing a CT | is the middle of the brain in the middle of the head. Is there symmetry. Is the suprasellar cistern a star. Is the 4th ventricle midline and symmetric. Is the lateral ventricle effaced |
| an epidural hematoma is usually caused by damage to an __ | artery |
| what is the most injured cranial artery leading to an epidural bleed | middle meningeal artery |
| crescentic free flowing hematoma in the brain is usually a | subdural hematoma |
| etiology of a subdural hematoma | acceleration/deceleration injury, veins transversing subdural space |
| hematoma that will follow the contours of the brain | subarachnoid hematoma |
| ruptured aneurysms can cause | subarachnoid hematoma |
| worst headache of my life, thunder clap | subarachnoid hematoma |
| mechanism for orbital blow out fracture | punched in the eye |
| burst fracture of C1 | jefferson fracture |
| extension and distraction fracture of C2 | hangman's fracture |
| fracture of C7 spinous process | clay shoveler's fracture |
| third leading cause of death | cerbrovascular disease |
| blurring of the gray white junction on CT is an early sign of | stroke |
| hyperdense artery on CT is sign of | thrombotic stroke |
| imaging modality of choice for brain neoplasms | MRI |
| in every patient with a headache look for __ for sign of increased cranial pressure | papilledema |
| intra-axial refers to | brain parynchyma |
| extra-axial refers to | meninges, ventricles, skull |
| if you give contrast to a meningioma it is __ | light bulb bright |
| most common site for brain tumor in children | posterior fossa |
| imaging of choice for acute sinusitis | not needed |
| imaging of choice for chronic sinusitis | not needed |
| reason for getting imaging for sinusitis | failed treatment (could be fungal, neoplasm), preparation for surgery, |
| study of choice to rule out croupe | x-ray |
| steeple sign is seen in | croupe |
| croupe tends to be __ in etiology | viral |
| presentation: acute fever, dysphagia, stridor, sniffing position, respiratory failure, thumb print sign | epiglottitis |
| most common AIDS related CNS opportunistic infection | toxoplasmosis |
| ring enhancing lesions in a patient with AIDS could be | toxoplasmosis or cancer |
| age 20-40, females>males, autoimmune destruction of myelin, lesion in time and space | multiple sclerosis |
| multiple sclerosis has findings on MRI, unfortunately __ | they overlap with other diseases |
| wet, wobbly, and weird | Normal pressure hydrocephalus |
| symptoms of incontinence, gait abnormalities, and dementia (emotional disturbance) | Normal Pressure Hydrocephalus |
Created by:
bwyche
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