1. Using ‘obi:value specifications’ for Measurements in Radiology Heiner Oberkampf instance owl:Class rdf:type everything in red is to be discussed Legend: 1

2. 1D Measurements _:vs uo:centimeter iao:has measurement unit label uo:length unit “1.1”^^xsd:float _:diam-LN obi:has specified value _:md iao:length measurement datum obi:has value specification pato:diameter _:ln fma:lymph node bfo:has quality ogms:clinical finding _:cf iao:is about “Enlarged lymph node with diameter 1.1 cm.”@en mci:sentence _:s mci:documented in mci:has textual representation ro:has_part iao:is quality measurement of obi:scalar value specification Size in PATO: We do not create new classes under ‘obi:scalar value representation’ 2

3. 2D Measurements (I) _:diam-LN _:md iao:length measurement datum _:ln fma:lymph node bfo:has quality ogms:clinical finding _:cf iao:is about “Enlarged lymph node with diameter 2.5 x 1.1 cm.”@en mci:sentence _:s mci:documented in mci:has textual representation ro:has_part iao:is quality measurement of _:2d-lmd :tupel _:md2 :has first part _:diam-LN2 iao:information content entity :has second part obi:has value specification pato:diameter Proposed Object Properties 3 _:vs uo:centimeter iao:has measurement unit label uo:length unit “2.5”^^xsd:float obi:has specified value obi:scalar value specification _:vs2 “1.1”^^xsd:float

4. 2D Measurements (II) _:vs uo:centimeter iao:has measurement unit label uo:length unit “2.5”^^xsd:float obi:has specified value _:ln fma:lymph node bfo:has quality ogms:clinical finding _:cf iao:is about “Enlarged lymph node with diameter 2.5 x 1.1 cm.”@en mci:sentence _:s mci:documented in mci:has textual representation obi:scalar value specification iao:measurement datum _:vs2 “1.1”^^xsd:float :has first part :has second part Proposed Object Properties obi:has value specification _:tupel :tupel _:area-ln pato:area iao:is about 4 _:md ro:has_part

5. Normal Size Specifications 5

6. Normal Upper Bound _:vs uo:centimeter iao:has measurement unit label uo:length unit “1.0”^^xsd:float obi:has specified value obi:scalar value specification :has value specification _:ns :normal size upper bound specification iao:information content entity Example: Lymph nodes are normally up to 1 cm. No object properties added… fma:lymph node _:nd pato:diameter bfo:is quality of pato:normal _:ln iao:is quality specification of pato:length pato:size Proposed Classes “The lower/upper/interval/approximate stuff will be probably be useful elsewhere in OBI, so we should think about how to factor it out.” (James) 6

7. Normal Interval uo:centimeter uo:length unit “2.6”^^xsd:float obi:scalar value specification :has value specification _:nubs :normal size upper bound specification _:nlbs :normal size lower bound specification _:vs-lower-b “1.6”^^xsd:float _:vs-upper-b _:nsis :normal size interval specification Example: Normal diameter of the pulmonary atery is between 1.6 and 2.6 cm. fma:pulmonary atery _:nd pato:diameter bfo:is quality of pato:normal _:ln pato:length pato:size iao:is quality specification of ro:has part 7 iao:has measurement unit label obi:has specified value Proposed Classes :has value specification

8. Orientation of the measurement within the three planes: longitudinal (cranio-caudal, superior-inferior) transverse (axial) antero-posterior Type of size measurement length, width, depth, height, thickness… long/short diameter Location of the measurement “Lesion of 1.8 cm in liver segment 6.” “Diameter of spleen at hilum.” Work in Progress 8