Table 4.

Items investigated with in-depth survey among the medical staff of intervention radiology department

Survey contents	Components	Detailed item
Detailed questionnaire	Demographics	Same as baseline survey questionnaire
	Work history	Same as baseline survey questionnaire
	Work practices	Frequency of interventional procedures, badge wearing, wearing of protective equipment and use of shielding devices (by decade*)
	Experience of high radiation exposure	Exposure to >5 milliSievert a quarter, low WCC and radiation work in other job
	Management of radiation exposure	Regular health check-up, knowledge of dose limits and personal dose and risk perception items
	Personal medical examination	X-ray (by site†), mammography, dental radiography, CT (by site‡), fluoroscopy (by site§), interventional radiography, PET-CT, nuclear medicine imaging, radiation therapy and MRI
	Lifestyle	Smoking, alcohol consumption, physical exercise and night shifts
	Medical history	Cataract, skin diseases, thyroid diseases, neck/back pain, cardiovascular diseases, cancer and so on Medication history, family history of cataract, cardiovascular diseases and cancer
Clinical examination	Anthropometry	Height, weight and waist circumference
	Blood pressure	Systolic and diastolic blood pressure
	Blood analysis	For haematologic disease WCC, differential count, RBC, Hb, Hct, MCV, MCH, MCHC, RDW, platelet, MPV, PDW and reticulocyte count
		For diabetes HbA1c
		For dyslipidaemia Total cholesterol, TG, HDL cholesterol and LDL cholesterol
		For thyroid disease TSH, thyroid hormones T3, T4 and free T4
		For cardiovascular risk factors Homocysteine, hs-CRP
	Ophthalmological examination	Visual acuity Lens opacities
	Ultrasonography examination	Thyroid gland Common and internal carotid artery CMIT
Badge monitoring	Dosimetry Work diary	Inside/outside of lead apron at chest and outside of thyroid shield Interventional procedures (type, frequency and time)
Biodosimetry	Stable and unstable chromosomal aberrations	Dicentric assay 1,2,4-FISH translocation assay
Past health check-up records	Haematology Blood pressure	WCC, differential count, RBC, Hb and platelet
		Systolic and diastolic blood pressure

*1980–1989, 1990–1999, 2000–2009 and 2010–present.

†Head and neck, chest, abdomen and extremity.

‡Head and neck, chest, abdomen, pelvis and extremity.

§Stomach, intestine, hepatobiliary, kidney and others.

CIMT, carotid intima–media thickness; FISH, fluorescent in situ hybridisation; Hb, haemoglobin; HbA1c, glycated haemoglobin; Hct, haematocrit; HDL, high-density lipoprotein; hs-CRP, high-sensitivity C reactive protein; LDL, low-density lipoprotein; MCH, mean corpuscular haemoglobin; MCHC, mean corpuscular haemoglobin concentration; MCV, mean corpuscular volume; MPV, mean platelet volume; PDW, platelet distribution width; PET, positron emission tomography; RBC, red blood cell; RDW, red cell distribution width; T3, tri-iodothyronine; T4, thyroxine; TG, triglyceride; TSH, thyroid-stimulating hormone; WCC, white cell count.