CREATE TABLE table_31912 ("Name" TEXT, "Investigation" TEXT, "Route of administration" TEXT, "In-vitro / in-vivo" TEXT, "Imaging / non-imaging" TEXT)

Tell me the name for Investigation of thrombus imaging and Route of administration of iv
SELECT "Name" FROM table_31912 WHERE "Route of administration" = 'iv' AND "Investigation" = 'thrombus imaging'
SELECT "Name" FROM "table_31912" WHERE "Investigation" = 'thrombus imaging' AND "Route of administration" = 'iv'