. Author manuscript; available in PMC: 2012 Mar 1.

Published in final edited form as: Radiol Clin North Am. 2011 Mar;49(2):257–265. doi: 10.1016/j.rcl.2010.11.004

Table 1.

CT Colonography Studies Reporting Added Costs of Incidental Findings

Authors	Journal	Year	Location	Study Type	Population	Cohort Mean Age	Number of Cases	% Incidental Findings	% Clinically Significant	Average Added Cost Per Scan
Hara et al⁵	Radiology	2000	US	Prospective	Asymptomatic	64	264	41%	11%	$28^#
Gluecker et al³	Gastroenterology	2003	US	Prospective	Asymptomatic	64^*	681	69%	10%	$34^#
Yee et al¹⁰	Radiology	2005	US	Prospective	Mixed	63	500	63%	9%	$28^#
Chin et al¹	Am J Gastroent	2005	AUS	Prospective	Asymptomatic	59	432	27%	7%	$24^†
Xiong et al⁹	Br J Radiol	2006	UK	Prospective	Symptomatic	74^*	225	52%	N/A	$282^‡^§
Tolan et al⁸	AJR	2007	UK	Retrospective	Symptomatic	80	400	67%	29%	$67^†
Flicker et al²	JCAT	2008	US	Retrospective	Mixed	61	376	72%	18%	$13^#
Pickhardt et al⁷	Radiology	2008	US	Retrospective	Asymptomatic	58	2195	N/A	7%	$99^‡
Kimberly et al⁶	J Gen Intern Med	2008	US	Prospective	Mixed	57^*	136	98%	18%	$248^‡
Veerappan et al⁴	AJR	2010	US	Retrospective	Asymptomatic	59	2277	46%	11%	$50^†

US= United States, AUS= Australia, UK= United Kingdom, N/A= Not Specifically Addressed

median reported instead of mean

^§

converted based on 2006 rates²⁵

includes imaging-related costs

^†

includes imaging-related costs and other diagnostic costs

^‡

includes imaging-related costs, as well as other diagnostic costs and treatment costs