Who is the patient portrayer of the episode with the production code 3T5004?
CREATE TABLE "table1_26561509_1" (
  "no" real,
  "num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "patient_portrayer" text,
  "original_air_date" text,
  "production_code" text
);
SELECT "patient_portrayer" FROM "table1_26561509_1" WHERE "production_code"='3T5004';