Do I need to remove my necklace for chest X-ray during physical examination?

When taking chest X-rays for physical examination, it is necessary to remove the necklace. Metal objects may interfere with imaging results, leading to misdiagnosis or the need for repeated examinations.

Metal necklaces may produce high-density shadows under X-ray irradiation, which may obstruct the development of key areas such as the lungs and mediastinum. Chest X-rays are mainly used to screen for lung infections, tuberculosis, tumors, and abnormal cardiac contours. The necklace shadow in the clavicle area is easily mistaken for calcifications or foreign bodies. Some necklace pendants contain heavy metal components, which can cause artifacts that interfere with doctors' observation of lung texture, especially significantly affecting the recognition of early small nodules or ground glass like changes. A few decorative necklaces made of low-density alloys or plastic materials may not be visible in low-dose chest X-rays, but the X-ray machine parameters of most medical institutions will enhance the metal imaging effect. In special circumstances, if the patient is unable to remove the necklace due to religious reasons, they should inform the radiology technician in advance and make up for it by adjusting the shooting angle or using a side view film. However, such operations will reduce diagnostic accuracy and are not recommended unless necessary. Before the physical examination, all neck accessories, including metal necklaces, pendants, tie clips, etc., should be actively removed. Wearing cotton clothing without metal fasteners can avoid the trouble of changing clothes. If the necklace is not removed due to special reasons, resulting in unclear images, it may be necessary to take additional photos at one's own expense. Retrieve the items promptly after inspection and take care to prevent loss.