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

2. Using ‘obi:value specification’ _: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 :length value specification obi:value specification Added Classes: Size in PATO:

3. Using ‘obi:value specification’ for 2D 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 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 :length value specification obi:value specification _:2d-lmd :two directional length measurement datum _:vs2 _:md2 “2.5”^^xsd:float ro:has_part _:diam-LN2 iao:measurement datum

4. Normal Size Specifications

5. _:vs uo:centimeter iao:has measurement unit label uo:length unit “1.0”^^xsd:float obi:has specified value obi:scalar value specification :has maximal value specification _:ns :normal size upper bound specification iao:information content entity obi:value specification :length value specification Example: Lymph nodes are normally up to 1 cm. Added Object Properties:Added Classes: fma:lymph node _:nd pato:diameter bfo:is quality of pato:normal _:ln iao:is quality specification of pato:length pato:size Instances: 96 size specifications about 38 different anatomical entities.

6. Using Defined Classes normal size interval specification normal size upper bound specification …

7. Work in Progress 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.” Questions OBI is using BFO(2?) while IAO is using BFO1.1… ??? OBI contains two DataProperties ‘iao:has measurement value’ and ‘obi:has specified value’: Is the IAO property still needed? Could one use the IAO property as a shortcut for the path ‘obi:has value specification’/‘obi:has specified value’?