Notes in 00 Introduction to Imaging

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Published	11/02/2024	What color is air on an xray? What color is calcium?
Published	11/02/2024	How is CT different from an xray?
Published	11/02/2024	CT number is measured in {{c1::Hounsfield Units (HU)}}
Published	11/02/2024	The Hounsfield unit (HU) range is between {{c1::-1000}} and {{c1::+1000}}
Published	11/02/2024	What are the Hounsfield units for air, bone, fat, water, and soft tissue?
Published	11/02/2024	For CT images, how is attenuation related to structural density and color on the CT image?
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Published	11/02/2024	Ultrasonography
Published	11/02/2024	During an ultrasound, tissue that reflects sound waves is {{c1::echogenic}} and appears {{c1::bright/white}}. Tissue that reflects few of no sound wav…
Published	11/02/2024	How does MRI work?
Published	11/02/2024	How does Nuclear Medicine work?
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Published	11/02/2024	When should you order a chest x-ray? What symptoms would prompt this, and what diagnoses are you thinking about?
Published	11/02/2024	What symptoms would prompt ordering a CT of the abdomen? What diagnoses are you trying to rule out?
Published	11/02/2024	what are the five densities detected by an xrayair = {{c1::black}} (most radiolucent)fat = {{c1::blackish/gray}} (highly radiolucent)soft tissue/fluid…
Published	11/02/2024	what is the difference between an ap and a pa view?
Published	11/02/2024	what are some examples of radioactive dyes used in NM
Published	11/02/2024	when should an US be ordered?
Published	11/02/2024	whats one common US screening test?
Published	11/02/2024	define sensitivity
Published	11/02/2024	define specificity
Published	11/02/2024	reasons to order an MRI on a pt with low back pain, parethesias, and/or incontinence?
Published	11/02/2024	reasons to order a nuclear medicine study (NM)?
Published	11/02/2024	what is an air bronchogram
Published	11/02/2024	why do we order image studies?
Published	11/02/2024	which cxr view tends to give pseudocardiomegaly
Published	11/02/2024	mri relies on what
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Published	11/02/2024	why would i order an abd xray
Published	11/02/2024	what am i trying to rule out with abd xrays?
Published	11/02/2024	why would i order a joint xray
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