Cluster 949: nodal lesions mm axis recorded short accurately longest dimension calipers 
Cluster 1300: mm accurately dimension longest diameter recorded measured spiral measurable techniques 
Cluster 1561: mm calipers exam ray recorded accurately longest dimension chest diameter 
Cluster 1727: mm repeated accurately suitable accurate measurements axis longest irradiated lesion 
Cluster 1764: measured measurable lesion accurately dimension mm ct disease defined mri