Files > CT DOSE

+---------------------------------------------------------------+ | | | Property of the US Government. | | No permission to copy or redistribute this software is given. | | Use of unreleased versions of this software requires the user | | to execute a written test agreement with the VistA Imaging | | Development Office of the Department of Veterans Affairs, | | telephone (301) 734-0100. | | | | The Food and Drug Administration classifies this software as | | a medical device. As such, it may not be changed in any way. | | Modifications to this software may result in an adulterated | | medical device under 21CFR820, the use of which is considered | | to be a violation of US Federal Statutes. | | | +---------------------------------------------------------------+ This file contains CT DOSE information corresponding to an entry in the IMAGE SERIES file (#2005.63).
.01id(+)0;1FREE TEXTBThis is a unique ID assigned to each CT DOSE instance.
1irradiation instance uid0;2FREE TEXTThis is the IRRADIATION INSTANCE UID associated with a CT DOSE instance.
2target region0;3POINTER2005.6361This is the anatomical region targeted by the procedure.
4ctdivol0;5NUMERICThis field is Computed Tomography Dose Index volume. It 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 each actual patient. However, the CTDIvol is very useful for comparing and adjusting CT imaging protocols. Unit: mGy (milligray).
7dlp0;8NUMERICThis field is the Dose Length Product. The Dose Length Product is the CTDIvol multiplied by the scan length (slice thickness × number of slices) in centimeters. Unit: mGy-cm (milligray-centimeters)
11series instance0;12POINTER2005.63CThis is the image series associated with this CT DOSE instance.
12phantom type0;13POINTER2005.6362 This field indicates which phantom type was used to determine the irradiation dosage of this irradiation dosage instance. A phantom is a specially designed object that is scanned or imaged in the field of medical imaging to evaluate, analyze, and tune the performance of various imaging devices.

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