Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_31913 ( "Name" text, "Investigation" text, "Route of administration" text, "In-vitro / in-vivo" text, "Imaging / non-imaging" text )

### Question ###
Tell me the in-vitro for Route of administration of iv and Investigation of somatostatin receptor imaging

### Accurate SQL ###

SELECT "In-vitro / in-vivo" FROM table_31913 WHERE "Route of administration" = 'iv' AND "Investigation" = 'somatostatin receptor imaging'