The subject had a chest CT scan and an abdominal CT scan.
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Dataset2 |
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Row | STUDYID | DOMAIN | USUBJID | PRSEQ | PRTRT | PRLOC | VISIT |
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1 | ABC | PR | ABC-123 | 1 | CT SCAN | CHEST | BASELINE |
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2 | ABC | PR | ABC-123 | 2 | CT SCAN | ABDOMEN | BASELINE |
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An evaluator examines the images of the thoracic and abdominal regions produced by the CT scan and decides whether TAA and AAA are present as well as their locations. Note for viewing simplicity, some variables are omitted from the table below.
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Rows 1-3: | Examination of the thoracic region indicates the presence of an aneurysm in the Thoracic Aorta spanning from the aortic arch to the descending aorta. It also shows that the descending aorta had dissected (the artery is tore and a false lumen had formed), most likely due to the enormous pressure caused by the large aneurysm in this area. |
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Rows 4-6: | Examination of the abdominal region indicates the presence of an aneurysm in the infrarenal aorta, proximal to the iliac bifurcation. it also shows that infrarenal aorta had dissected. |
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Dataset2 |
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hi3 | TURESLOC |
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hi2style | yellow |
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hi3style | BOLD |
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Row | STUDYID | DOMAIN | USUBJID | TUSEQ | TUGRPID | TULNKID | TUTESTCD | TUTEST | TULOC | TUORRES | TUSTRESC | TURESLOC | TURLODTL | TUMETHOD | VISITNUM | VISIT | TUDTC |
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1 | ABC | TU | ABC-123 | 1 | 1 |
| LESIONIND | Lesion Indicator | Thoracic region | Y | Y |
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| CT SCAN | 1 | BASELINE | 2020-04-27 |
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2 | ABC | TU | ABC-123 | 2 | 1 | Aneurysm 1 | ABNEXAM | Examination for Abnormality | Thoracic region | Aneurysm | Aneurysm | Thoracic Aorta | Aortic Arch to Descending aorta | CT SCAN | 1 | BASELINE | 2020-04-27 |
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3 | ABC | TU | ABC-123 | 3 | 1 | Dissection 1 | ABNEXAM | Examination for Abnormality | Thoracic region | Arterial Dissection | Arterial Dissection | Descending aorta |
| CT SCAN | 1 | BASELINE | 2020-04-27 |
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4 | ABC | TU | ABC-123 | 4 | 2 |
| LESIONIND | Lesion Indicator | Abdominal region | Y | Y |
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| CT SCAN | 1 | BASELINE | 2020-04-27 |
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5 | ABC | TU | ABC-123 | 5 | 2 | Aneurysm 2 | ABNEXAM | Examination for Abnormality | Abdominal region | Aneurysm | Aneurysm | Infrarenal aorta | proximal to the iliac bifurcation | CT SCAN | 1 | BASELINE | 2020-04-27 |
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6 | ABC | TU | ABC-123 | 6 | 2 | Dissection 2 | ABNEXAM | Examination for Abnormality | Abdominal region | Arterial Dissection | Arterial Dissection | Infrarenal aorta | proximal to the iliac bifurcation | CT SCAN | 1 | BASELINE | 2020-04-27 |
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Diameters of the identified aneurysms are measured and are mapped to TR. LNKID is used to link TU and TR.
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Rows 1-2: | Length and maximal luminal diameter of the thoracic aortic aneurysm where LNKID = Aneurysm 1. |
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Rows 3-4: | Length and maximal luminal diameter of the thoracic aortic aneurysm where LNKID = Aneurysm 2. |
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Dataset2 |
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hi1style | #e3fcef |
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hi1 | TRLOC,TRLOCDTL |
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tableid | TR1 |
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Row | STUDYID | DOMAIN | USUBJID | TRSEQ | TRLNKID | TRTESTCD | TRTEST | TRORRES | TRORRESU | TRMETHOD | VISITNUM | VISIT | CVDTC |
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1 | ABC | TR | ABC-123 | 1 | Aneurysm 1 |
| Length | 4 | cm | CT SCAN | 1 | BASELINE | 2020-04-27 |
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2 | ABC | TR | ABC-123 | 2 | Aneurysm 1 |
| Maximal Luminal Diameter | 3 | cm | CT SCAN | 1 | BASELINE | 2020-04-27 |
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3 | ABC | TR | ABC-123 | 3 | Aneurysm 2 |
| Length | 5 | cm | CT SCAN | 1 | BASELINE | 2020-04-27 |
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4 | ABC | TR | ABC-123 | 4 | Aneurysm 2 |
| Maximal Luminal Diameter | 4 | cm | CT SCAN | 1 | BASELINE | 2020-04-27 |
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Modeling TU/TR data in CV.
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Dataset2 |
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hi3 | TURESLOC |
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hi2style | yellow |
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hi3style | BOLD |
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ROW | STUDYID | DOMAIN | USUBJID | CVSEQ | CVLNKID | CVGRPID | CVTESTCD | CVTEST | CVCAT | CVLOC | CVORRES | CVORRESU | CVSTRESC | CVRESLOC | CVRLODTL | CVMETHOD | VISITNUM | VISIT | CVDTC |
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1 | ABC | CV | ABC-123 | 1 |
| TR | ABNIND | Abnormality Indicator | LESION IDENTIFICATION | Thoracic region | Y |
| Y |
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| CT SCAN | 1 | BASELINE | 2020-04-27 | 2 | ABC | CV | ABC-123 | 2 |
| TR-Aneurysm | ABNEXAM | Examination for Abnormality | LESION IDENTIFICATION | Thoracic region | Aneurysm |
| Aneurysm | Thoracic Aorta | Aortic Arch to Descending aorta | CT SCAN | 1 | BASELINE | 2020-04-27 | 3 | ABC | CV | ABC-123 | 3 | 1 | TR-Dissection | ABNEXAM | Examination for Abnormality | LESION IDENTIFICATION | Thoracic region | Arterial Dissection |
| Arterial Dissection | Descending aorta |
| CT SCAN | 1 | BASELINE | 2020-04-27 | 4 | ABC | CV | ABC-123 | 4 |
| AR | LESIONIND | ABNIND | Abnormality Indicator | Abdominal region | Y |
| Y |
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| CT SCAN | 1 | BASELINE | 2020-04-27 | 5 | ABC | CV | ABC-123 | 5 |
| AR-Aneurysm | ABNEXAM | Examination for Abnormality | LESION IDENTIFICATION | Abdominal region | Aneurysm |
| Aneurysm | Infrarenal aorta | proximal to the iliac bifurcation | CT SCAN | 1 | BASELINE | 2020-04-27 | 6 | ABC | CV | ABC-123 | 6 |
| AR-Dissection | ABNEXAM | Examination for Abnormality | LESION IDENTIFICATION | Abdominal region | Arterial Dissection |
| Arterial Dissection | Infrarenal aorta | proximal to the iliac bifurcation | CT SCAN | 1 | BASELINE | 2020-04-27 | 7 | ABC | CV | ABC-123 | 7 |
| TR-Aneurysm | LENGTH | Length | LESION PROPERTIES |
| 4 | cm |
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| CT SCAN | 1 | BASELINE | 2020-04-27 | 8 | ABC | CV | ABC-123 | 8 |
| TR-Aneurysm | MAXLDIA | Maximal Luminal Diameter | LESION PROPERTIES |
| 3 | cm |
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| CT SCAN | 1 | BASELINE | 2020-04-27 | 9 | ABC | CV | ABC-123 | 9 |
| AR-Aneurysm | LENGTH | Length | LESION PROPERTIES |
| 5 | cm |
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| CT SCAN | 1 | BASELINE | 2020-04-27 | 10 | ABC | CV | ABC-123 | 10 |
| AR-Aneurysm | MAXLDIA | Maximal Luminal Diameter | LESION PROPERTIES |
| 4 | cm |
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| CT SCAN | 1 | BASELINE | 2020-04-27 |
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The dissected descending aorta (LNKID =Dissection 1) is classified based on the Stanford Aortic Dissection System as type B.
Note: This test was originally created as a CVTEST, based on SDTMIG 3.4, this is now considered as a grading scale and therefore should now be represented as CC/RS.
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Dataset2 |
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Row | STUDYID | DOMAIN | USUBJID | RSSEQ | RSLNKID | RSTESTCD | RSTEST | RSCAT | RSORRES | RSSTRESC | VISITNUM | VISIT | CVDTC |
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1 | ABC | RS(CC) | ABC-123 | 1 | 1 | STAN0101 | STAN01-Stanford Aortic Dissection Classification Type | STANFORD AOD CLASSIFICATION | STANFORD B | STANFORD B | 1 | BASELINE | 2020-04-27 |
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What goes into TULOC?
After all this, i struggle with what values should go into TULOC. When a CT scans the chest, it produces cross-sectional images of the chest/thorax and everything in it. You can view the images in three angles: a) axial view (you are looking at the picture of the thorax from the direction of head to toe), b) the coronal view (you are looking at the images of the thorax as if you are standing in front of the person), c) sagittal view (you are looking at the picture of the thorax from the side). Hence TULOCs are populated with Thoracic Region and Abdominal Region for now. Especially in the axial view, as you move from cross-sectional images of the thorax to images of the abdomen, you are looking at sectioned images of the thoracic region to abdominal region, there is no mistake about which region you are looking at because the anatomy of both regions are so different and clearly sperpated. I think it is not wrong to populate TULOC with chest and abdomen as well, they are just not the most precise anatomical terms.
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title | Questions and Thoughts |
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Imaging modality for the CV-imaging project: Coronary angiography: - Done on the chest area, the probe rotates around the chest of the subject, but there is no such a thing as "chest Coronary angiography", it is simply called Coronary angiography.
- Creates images of the entire coronary artery system.
- We don't record PRLOC = chest for this procedure
Thransthoracic Echocardiogram (TTE): - Done on the chest and upper abdominal wall. The transducer is placed on various parts of the chest and upper belly to create ultrasonic views different views of the heart. Again, there is no such a thing as chest TTE.
- Creates images of the heart.
- We don't record PRLOC = Chest and upper abdomen for this procedure
Transesophageal Echocardiogram (TEE): - Transducer is inserted into the Esophagus.
- Creates images of the heart.
- We don't record PRLOC = Esophagus
Cine Angiography: - Done on the chest, again the probe is placed on top of the chest.
- Creates images of the entire coronary artery system.
In addition, i just recently took a family member to have a Thyroid Ultrasound: - The ultrasound probe moved around her neck
- Creates images of the thyroid gland. In this case would you argue that PRLOC is thyroid or neck?
Referring to Richard M's email: LOC in the interventions class is "Anatomical focus of an intervention - at which part of the body an intervention is being made". This also my understanding as well. - The "injection" intervention has an anatomical focus - the anatomical site of injection.
- Percutaneous Coronary Intervention (also known as angioplasty with stent), has an anatomical location where the procedure occurs, intervenes and alters the abnormal structure of the location - i.e. in the RIGHT POSTERIOR DESCENDING ARTERY (PRLOC), the angioplasty breaks up the blockage and inserts a stent.
- Brachytherapy places radioactive material inside a location of the body to kill cancer cells, e.g. prostate. The procedure occurs, intervenes and alters the abnormal structure of the location.
It is easy to pinpoint a location for invasive/treatment type interventions and this aligns with my understanding of how PRLOC should be used. However, for "diagnostic imaging" procedures, where the imaging probe is placed (i.e. neck, chest, abdomen, head, etc.), Is this really the location where a intervention is "made"? |