Fig. 4.
A histopathologically proven involved 13-mm node in station 10L in a patient with squamous cell carcinoma. Ordered subset expectation maximum (OSEM) maximum standardised uptake value (SUVmax) 5.4, increasing to 7.7 on Bayesian penalised likelihood reconstruction (BPL), with a visually appreciable decrease in noise of the mediastinal blood pool. All positron emission tomography (PET) images are displayed on SUV scale 0–6