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Follow each guideline for this scenario: 1 . explain the nature and assess the severity of the hazards to patients and staff 2. explain how the procedures reduce the hazardous effect 3. explain the circumstances where this method of imaging might be used in preference to ultrasound1 which has relatively low probability of harming the patient. Your answers should show your understanding of the physics principles underlying the hazards and the control measures taken. Nuclear Medicine Imaging Patients who have received radionuclide therapy shall be accommodated in the hospital facilities in a manner dist minimizes the radiation eimosure of workers, other patients and visitors. Patients who have had radioactive substances administered to them may be treated as outpatients when radiation exposures caused to family members and other persons by the residual activity in these patients remain insignicant. The following dose constraints shall be applied: Family members of the patient o Children {including unborn children} 1 mSvftreatment o Adults [under Ell years of age) 3 mSvftreatrnent o Pidults {Bil years of age and older) 15 mSvftreatment Other persons (members of the public) {13 mSvfyear lfit is possible mat the dose constraints of family members or any odter individuals might be exceeded, {e.g. because of a long journey, or if there are small children at home) the patient must remain in hospital until the residual activity in this patient has fallen sufciently- Patients with incontinence should not be released to ieir own home or to nursing home inunediately after treatment. lifter 1311 treatment the patient may be released from hospital after receiving the relevant radiation protection instructions when the residual 1311 activity in patient no longer exceeds Silt} NIP-g. When using betaemitting radionuclides, such as 32F, E'QSI and WY, no radiation protection measures are necessary after the residual activity in a patient no longer exceeds EDD NIB-:1