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Terms in this set (22)
CT scan indications
acute head trauma, urinary conditions, or acute vascular conditions, aneurysm, or bone conditions
CT images are acquired in the ___ plane and digitally reformated into coronal and sagittal planes
CT images are acquired in the axial plane and digitally reformated into ___ and ___ planes
coronal and sagittal
reduction in energy of x-ray beam as it transverses matter
measure of how easily a material can be penetrated by the x-rays
what is the Hounsfield unit of air?
what is the Hounsfield unit of fat?
120 to -60
what is the Hounsfield unit of water?
what is the Hounsfield unit of compact bone?
what is the Hounsfield unit of soft tissue?
+40 to +80
what is an indication for a myelography?
evaluate space occupying lesions within spinal canal (determines location)
a MR Myelography can be performed with or without...
angiography is used for?
evaluation of blood vessels
a bone scan involves injection of radionuclide
bone scan assesses areas of
only ___-___ % bone density loss is required to be detected
the first stage of a bone scan is
vascular/flow phase (0-2 mins)
the second stage of a bone scan is
blood-pool phase (5 mins)
the third stage of a bone scan is
delayed stage (2-4 hrs)
indications of a bone scan for arthritides
a SPECT scan is a single photom emission computed tomography, it is like a bone scan coupled with
PET CT Scan is a positron emission tomography, it uses a positron emitting isotope known as
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