A low-density lipoprotein (LDL)-based iodinated nanoparticle targeting the LDL receptor (LDLR), expressed in PCa, for example, has also been evaluated for CT imaging [304,305,306], as well as polyvinyl pyrrolidone coated bismuth sulfide (Bi2S3) based nanocrystals [307]. Here, LDLR is linked to posterior cortical atrophy.