All patients with NSCLC who have undergone biopsy of primary tumour lesion will be administered 3-12 MBq/kg of 99mTc-NM-01 in a single injection.

All patients with NSCLC who have undergone biopsy of primary tumour lesion will be administered 0.75- 4 MBq/kg of 68Ga-NM-01 in a single injection.

Patient is injected with micro-dose of 99mTc-NM-01

Visual analysis will be carried out by 4 experienced nuclear medicine physicians to observe the uptake of 99mTc-NM-01 and 68Ga-NM-01 in lung lesions. A 4 point system will be used to interpret the scans for abnormalities. It is categorised as such: score 0, no abnormal increased uptake; score 1, low increased uptake; score 2, moderate increased uptake; score 3, high increased uptake. The lesion will be considered positive for malignancy if the score is 2 or higher.

Patients in the 99mTc-NM-01 group will be administered 3-12 MBq/kg of 99mTc-NM-01 and patients in the 68Ga-NM-01 group will be administered 0.75-4 MBq/kg of 68Ga-NM-01. The semiquantitative analysis of the region of interest (ROI) will be performed in lung lesions. Higher level of PD-L1 expression (Tumor proportion score, TPS), higher ROI in tumor. No expression TPS < 1%; Low expression TPS 1 - 49%; High expression TPS ≥ 50%.

Patients biopsy sample will be tested to confirm the levels of PD-L1 expression using Human PD-L1 ELISA Kit.

Monitor adverse events within 7 days after the injection and scanning to establish the safety of 99mTc-NM-01 and 68Ga-NM-01 in patients.