Table 2.

Increase in chromosome translocation after a single CT scan (chromosome 1, 2, 4-painting)

Patient no.	Timing	Number of cells scored		Number of translocations	Increment	Frequency of observed translocationb
		Cell count of analysis	Cell equivalenta
1	Before CT	5131	2011	43	7	2.14
	After CT	5126	2009	50		2.49
2	Before CT	5184	2031	172	29	8.47
	After CT	5134	2012	201		9.99
3	Before CT	5128	2010	3089	128	189.50
	After CT	5139	2014	3937		195.48
4	Before CT	5126	2009	26	13	1.29
	After CT	5106	2001	39		1.95
5	Before CT	5118	2006	21	12	1.05
	After CT	5138	2014	33		1.64
6	Before CT	5120	2007	671	−40	33.43
	After CT	5135	2012	631		31.36
7	Before CT	5133	2012	1067	82	53.03
	After CT	5156	2021	1149		56.85
8	Before CT	5121	2007	215	−7	10.71
	After CT	5134	2012	208		10.34
9	Before CT	5122	2008	85	12	4.23
	After CT	5104	2001	97		4.85
10	Before CT	5139	2014	37	60	1.84
	After CT	5128	2010	97		4.83
11	Before CT	5134	2012	65	19	3.23
	After CT	5111	2003	84		4.19
12	Before CT	5137	2014	43	−11	2.14
	After CT	5120	2007	32		1.59

^aCell count 196/500 (see Methods for formula). ^bPer 100 cells equivalent.