It is the guidance for Radiation Safety

It stands for As Low As Reasonably Achievable

It means avoiding exposure to radiation that does not have a direct benefit to you

All of the above

Chest and Abdominal Radiographs

Computed Tomography (CT)

Magnetic Resonance Angiography

Fluoroscopy studies

Gamma Rays

X Rays

Alpha Particles

All the above            

Stochastic effects of radiation are probabilistic effects that can occur from radiation exposure, even at low doses

The probability of a stochastic effect is proportional to the dose of radiation received

Cancer and genetic effects are the main stochastic effects of radiation

All of the above

Contrast enhanced CT brain

Skeletal survey radiographs

Dental Cone beam CT

Micturating Cystourethrogram Study (MCUG)

Radiation can cause cancer by damaging the DNA

The voltage of 80 kV is too low to provide good image quality

CT chest is always indicated in children with recurrent pneumonia

Radiation dose in CT chest is equivalent to approximately 200 chest radiographs

Is indicated to diagnose meningitis

Contrast enhanced study is always indicated in CNS infection

Poor soft tissue contrast but useful to exclude intra-cranial bleed

Able to exclude demyelination disease in a child with encephalopathy

Their cells are actively dividing due to growth

They have long life expectancy which enable malignancy to develop

Sensitive organs of children are closer to each other and not easy to exclude from radiation field

All of the above

Is the CT scan really needed to come to a diagnosis

Can a previous exam give the information needed

Multiphase CT is essential for accurate diagnosis of liver tumour

Is there an alternative imaging modality that does not involve radiation