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Sub-Field: 70.31

Package: Radiology Nuclear Medicine

RADIATION ABSORBED DOSE(#70.3)-->70.31

Sub-Field: 70.31


Information

Parent File Name Number Package
RADIATION ABSORBED DOSE(#70.3) IRRADIATION INSTANCE UID 70.31 Radiology Nuclear Medicine

Details

Field # Name Loc Type Details
.01 IRRADIATION INSTANCE UID 0;1 FREE TEXT
************************REQUIRED FIELD************************

  • INPUT TRANSFORM:  K:$L(X)>64!($L(X)<3)!'(X?1.N1".".PN) X
  • LAST EDITED:  MAY 30, 2013
  • HELP-PROMPT:  The Irradiation Instance UID must be 3-64 characters in length.
  • DESCRIPTION:  
    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.
  • TECHNICAL DESCR:  The Irradiation Instance UID is defined as a character string containing a UID that is used to uniquely identify a wide variety of items. The UID is a series of numeric components separated by the period "." character.
    If a Value Field containing one or more UIDs is an odd number of bytes in length, the Value Field shall be padded with a single trailing NULL (00H) character to ensure that the Value Field is an even number of bytes in
    length.
    DICOM Value Representation: UI (Unique Identifier) Data format: "0"-"9", "." (A series of numeric components separated by the period "." character)
  • CROSS-REFERENCE:  70.31^B
    1)= S ^RAD(DA(1),"II","B",$E(X,1,64),DA)=""
    2)= K ^RAD(DA(1),"II","B",$E(X,1,64),DA)
2 ANATOMICAL TARGET REGION 0;2 POINTER TO ANATOMIC TARGET REGION FILE (#2005.6361) ANATOMIC TARGET REGION(#2005.6361)

  • LAST EDITED:  APR 11, 2013
  • HELP-PROMPT:  Enter the part of the body scanned.
  • DESCRIPTION:  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 TO PHANTOM TYPE FILE (#2005.6362) PHANTOM TYPE(#2005.6362)

  • LAST EDITED:  APR 11, 2013
  • HELP-PROMPT:  Enter the appropriate phantom used in this instance.
  • DESCRIPTION:  
    A model of the human body or any of its parts used for predicting irradiation dosage within the body.
4 CTDIvol 0;4 NUMBER

  • INPUT TRANSFORM:  K:+X'=X!(X>99999)!(X<0)!(X?.E1"."10N.N) X
  • LAST EDITED:  MAR 10, 2015
  • HELP-PROMPT:  Type a number between 0 and 99999, 9 decimal digits.
  • DESCRIPTION:  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 NUMBER

  • INPUT TRANSFORM:  K:+X'=X!(X>99999)!(X<0)!(X?.E1"."10N.N) X
  • LAST EDITED:  MAR 10, 2015
  • HELP-PROMPT:  Type a number between 0 and 99999, 9 decimal digits.
  • DESCRIPTION:  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)
  • FIELD INDEX:  DLP (#1149) REGULAR IR LOOKUP & SORTING
    Short Descr:  This cross-reference sorts the sub-file records by DLP.
    Description:  This cross-reference will sort the Irradiation Instance sub-file records by Dose Length Product (DLP).
    Set Logic:  S ^RAD(DA(1),"II","DLP",$E(X,1,30),DA)=""
    Kill Logic:  K ^RAD(DA(1),"II","DLP",$E(X,1,30),DA)
    Whole Kill:  K ^RAD(DA(1),"II","DLP")
    X(1):  DLP  (70.31,5)  (Subscr 1)  (Len 30)  (forwards)
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