4. The Target Lesion(s) must have measurable disease, defined as a unidimensionally measurable lesion ≥ 1.0 cm in longest diameter by helical computed tomography (CT); the maximum diameter of any Target Lesion should be ≤ 3.9 cm. These lesions should also overexpress SSTR. If the lesion is negative on positron emission tomography-computed tomography (PET/CT), there is no need to perform further PET/CT scans.