Files > IRRADIATION INSTANCE UID

parent

70.3

name

IRRADIATION INSTANCE UID

number

70.31

Fields

#	Name	Location	Type	Details	Index	Description
.01	irradiation instance uid(+)	0;1	FREE TEXT		B	An irradiation event is the occurrence of radiation being applied to a patient in a single continuous time-frame between the start (release) and the stop (cease) of the irradiation.
2	anatomical target region	0;2	POINTER	2005.6361		This is the part of the body scanned through the emitting of a series of x-ray beams. For example, you might need a CT scan of the brain, liver, kidneys, or lungs. The target areas of CT scans are usually sinuses, the head, chest, abdomen, and pelvic regions.
3	phantom type	0;3	POINTER	2005.6362		A model of the human body or any of its parts used for predicting irradiation dosage within the body.
4	ctdivol	0;4	NUMERIC			The Computed Tomography Dose Index volume (CTDIvol) is approximately the average dose that would have been delivered to a standard cylindrical plastic phantom for a specific examination. One phantom is used for head scans and another larger diameter phantom is used for body scans. The CTDIvol must be adjusted for body size and other factors to estimate the dose to the scanned volume of a actual patient. However, the CTDIvol is very useful for comparing and adjusting CT imaging protocols. Unit: mGy (milligray)
5	dlp	0;5	NUMERIC			The Dose Length Product (DLP) is the CTDIvol multiplied by the scan length (slice thickness * number of slices) in centimeters. Unit: mGy-cm (milligray-centimeters)