In the context of radiological safety, which action is described as prohibited after radiopharmaceutical treatment?

• A. Enter Radiological Zones
• B. Speak To A Supervisor
• C. Take Lunch In The Control Room
• D. File A Safety Report

Answer: (A)

Access to Radiological Zones is restricted because radiopharmaceutical treatment can leave residual radioactivity and contamination risk. After treatment, entering high-activity areas without proper authorization and shielding could expose others and spread contamination, so such entry is prohibited. The safe path is to stay in designated patient or staff areas and follow the radiological safety officer’s instructions; only authorized personnel with the right training and dosimetry may enter Radiological Zones. The other actions are routine safety activities or generally not restricted solely by post-treatment status (for example, consulting a supervisor or filing a safety report), while activities like eating or taking breaks in a control or high-radiation area would typically violate safety rules.