Patterns of diagnostic imaging and associated radiation exposure among long-term survivors of young adult cancer: a population-based cohort study

Table 2 Mean number of diagnostic imaging studies received per person year, years 5–15 after diagnosis/referent dates, stratified by imaging modality and malignancy type

	CT		Plain Radiography		Nuclear Medicine		MRI		Ultrasound
Malignancy Type	Survivors	Controls	Survivors	Controls	Survivors	Controls	Survivors	Controls	Survivors	Controls
All Malignancies	0.30	0.08	1.02	0.63	0.12	0.06	0.09	0.04	0.65	0.47
Thyroid	0.15	0.08	0.80	0.62	0.12	0.06	0.06	0.04	0.87	0.57
Melanoma	0.17	0.07	0.67	0.57	0.06	0.06	0.06	0.04	0.50	0.43
Gynecologic^a	0.21	0.09	0.87	0.71	0.08	0.07	0.05	0.04	0.71	0.58
Bone & Soft-tissue	0.23	0.07	1.00	0.48	0.09	0.04	0.11	0.03	0.52	0.41
Head & Neck	0.25	0.09	0.76	0.53	0.09	0.07	0.13	0.03	0.42	0.37
Brain	0.26	0.08	0.58	0.50	0.06	0.05	0.65	0.03	0.39	0.84
Breast	0.32	0.10	1.70	0.84	0.22	0.08	0.10	0.04	0.85	0.59
Colorectal	0.33	0.08	0.87	0.62	0.09	0.07	0.05	0.04	0.64	0.42
Chest & Lung	0.33	0.10	1.13	0.60	0.09	0.06	0.04	0.03	0.43	0.41
Leukemia	0.34	0.07	0.91	0.49	0.09	0.06	0.06	0.04	0.60	0.73
Urologic	0.34	0.09	0.99	0.55	0.14	0.07	0.08	0.04	0.80	0.38
Testicular	0.40	0.07	0.68	0.34	0.06	0.04	0.03	0.03	0.29	0.20
HL	0.45	0.07	0.88	0.41	0.09	0.04	0.06	0.03	0.49	0.37
Upper GI	0.45	0.09	0.80	0.58	0.11	0.08	0.07	0.04	0.64	0.43
NHL	0.73	0.09	0.90	0.54	0.11	0.06	0.07	0.04	0.56	0.41

^aIncludes cervical, uterine and ovarian malignancies
Abbreviations: CT, computed tomography; MRI, magnetic resonance imaging; HL, Hodgkin lymphoma; GI, gastrointestinal; NHL, non-Hodgkin lymphoma

ISSN: 1471-2407