Often times when patients complain about chest discomforts and pain, the occurrence of aneurysm(s) are suspected. It is difficult to pinpoint the exact location of the aneurysm. Hence MRI and CT scan are the most frequently used tools to detect the presence and location of aneurysms. In this scenario, the test locations are often broadly defined as the subject's chest, abdominal cavity or the whole body. The specific location(s) where aneurysms are identified/found should be mapped to result location, not test.
Rows 1-2:
Show subject ABC-123 has a single aortic aneurysm from a chest CT scan.
Row 3:
Shows the said aneurysm is 7.5cm in length (diameter), which is measured from the Aortic Arch to Descending Aorta
Rows 4-5:
Show subject ABC-456 is found to have aneurysms in two locations from a whole-body MRI Scan: RENAL ARTERY and THORACIC AORTA.
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cv.xpt
Row
STUDYID
DOMAIN
USUBJID
CVSEQ
CVGRPID
CVTEST
CVORRES
CVORRESU
CVTSTLOC
CVMETHOD
VISITNUM
VISIT
CVDTC
CVRESLOC1
CVRESLOC2
CVRLODTL
1
ABC
CV
ABC-123
1
1
Aneurysm Indicator
Y
CHEST
CT SCAN
1
BASELINE
2020-04-27
2
ABC
CV
ABC-123
2
1
Number of Aneurysms
1
CHEST
CT SCAN
1
BASELINE
2020-04-27
AORTA
3
ABC
CV
ABC-123
3
1
Aneurysm Length/Diameter
7.5
CM
CHEST
CT SCAN
1
BASELINE
2020-04-27
AORTA
Aortic Arch to Descending Aorta
4
ABC
CV
ABC-456
1
2
Aneurysm Indicator
Y
BODY
MRI
1
BASELINE
2020-04-27
5
ABC
CV
ABC-456
2
2
Number of Aneurysms
2
BODY
MRI
1
BASELINE
2020-04-27
RENAL ARTERY
THORACIC AORTA
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From the CV-imaging project we also encountered use-cases where we need sub-LOC variables to help to further specify the free-text, detailed, more granular locations where a test is performed. These values are indeed clinically relevant location information that should NOT be pre-coordinated into the TEST itself, but are also inappropriate for LOC.
So we need a variable that provides additional, more specific and granular information about a proximate location or a range of location(s).
This example shows the minor axis cross-sectional diameter measurements of the left and right ventricle of the heart, at end ventricular diastole.
Row 1:
Shows the cross-sectional diameter of the left ventricle at end ventricular diastole, measured along the minor axis and specifically at the location of the high papillary muscle. The more granular, free-text anatomical description at which the measurement is set and performed is represented by the CVTLODTL NSV.
Row 2:
Shows the cross-sectional diameter of the right ventricle at end ventricular diastole, measured along the minor axis and specifically at just below the tricuspid valve. The more granular, free-text anatomical description at which the measurement is set and performed is represented by the CVTLODTL NSV.
