关于CT成像的局限性，以下哪项认识是错误的：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24721' and id < 2117610 and id<>'2117610' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24721' and id > 2117610 and id<>'2117610' order by id asc limit 5