You should use FREETEXTTABLE
(link) instead of FREETEXT
:
SELECT TOP 1000 Q.*, QI.*
FROM Quotes Q
INNER JOIN QuoteImages QI
ON Q.Id = QI.QuoteId
INNER JOIN FREETEXTTABLE(Quotes,QuoteText,'some text') FT
ON Q.Id = FT.[Key]
ORDER BY RANK DESC