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Table 1 Summary of the information recorded by a radiation dose monitoring system per modality and implementation level

From: Statement of the Italian Association of Medical Physics (AIFM) task group on radiation dose monitoring systems

 

Level

Recorded parameters

Patient information

I

Age, sex

II

Height, weight

III

BMI, Patient Effective Diameter

Computed tomography

I

CTDIvol or CTDIw, Phantom Type, DLP, and anatomical district per each series (including localizer, contrast monitoring, etc.)

II

kV, mAs (minimum and average value), mA (minimum and average value), rotation time, collimation, pitch, slice thickness, and scanning range per each series

III

Automated tube current modulation system descriptors (Noise Index, Effective mAs, etc.), reconstruction algorithm (if iterative the related strength should also be reported), field of view, if perfusion study the number and acquisition timing should also be reported, “virtual filter” applied to save radiation dose on a particular organ (specify the organ), SSDE, water equivalent diameter, and current profile across z axis

Angiography

I

Total KERMA air product (KAP), fluoroscopy KAP, radiography KAP, anatomical region (i.e., chest, abdomen, etc.)

II

Total number of exposure events

Per each exposure event: kV, mA, mAs, frames/second, filtration, fluoroscopy time, radiography image numbers, KAP and KERMA at the patient entrance reference point, X-ray tube position, source–detector distance (SDD), FOV, radiation field size

III

Table position, source–skin distance (SSD), indication of the different contribution of air KAP and KERMA per each exposure event and per orientation angle, peak skin dose (PSD)

Digital radiography

I

KAP per each exposure event, anatomical region (i.e., chest, abdomen, etc.)

II

Per each exposure event: kV, mAs, filtration, source–detector distance (SDD), radiation field size, detector radiation dose, tube orientation, air KERMA at reference point

III

Source–skin distance (SSD)

Digital mammography

I

Air skin KERMA, AGD per each exposure event

II

Per each exposure event: kV, mAs, anode, filtration, breast thickness, compression force

III

Tomosynthesis exposure parameters (number of exposures, angle, kV, mAs, filtration)

Mobile fluoroscopy

I

Total KAP, total fluoroscopy time, and anatomical region (i.e., chest, abdomen, etc.)

II

Total number of exposure events, fluoroscopy KAP, and radiography KAP

Per each exposure event: kV, mA or mAs, frames/second, filtration, source–detector distance (SSD), fluoroscopy time, number of radiographic images, cumulative KERMA at reference point

III

Source–skin distance (SSD)

Cone beam computed tomography

I, II, III

See “Digital radiography” (typically for dental CBCT) or “Angiography” section. Note that CBCT irradiation events must be clearly labeled as rotational events in the RDSR