Tổ công tác đã đồng ý rằng các đặc điểm lâm sàng để xem xét khi quyết định có nên để ngực trước tác X-ray bao gồm hút thuốc lá, nhiễm trùng đường hô hấp trên gần đây (URTI), tắc nghẽn mãn tính bệnh phổi (COPD) và bệnh tim. | Anaesthesia in the radiology department 6 is contained in a RF screened enclosure. Sensors in this type of equipment may also be shielded for example to prevent the LED cycling in the pulse oximeter probe from causing further interference. Main power supplies can carry interference through the RF screen and monitoring equipment should use an adequately filtered and isolated power source or be run by batteries. Batteries are strongly ferromagnetic and battery powered monitoring equipment must be very firmly secured within the magnetic field. Anaesthesia for MRI Piped medical gases are essential and the installation of an isolated filtered AC power circuit and RF filters will minimise interference from monitoring equipment. Purchase of an MRI-compatible anaesthetic machine and ventilator and fibre-optic monitoring systems will reduce potential problems. MRI-compatible anaesthetic machines with MRI-compatible ventilators are now made by most of the major manufacturers these can be sited adjacent to the magnet bore minimising the length of breathing systems. Space for resuscitation induction and recovery from anaesthesia will enhance patient safety and increase patient throughput. In my opinion . Peden patients are best anaesthetised outside the magnet room and then transferred into the magnet suite once they are stable and their airway has been secured. The airway of a patient whose head goes first into the magnet is completely inaccessible in addition a receiver coil is placed around the area being examined which in the case of a head scan reduces space for tubes and connections. All connections must be plastic. The laryngeal mask is widely used for MRI and a mask with no ferromagnetic components is specifically made for MRI. Anaesthetists who have not worked in the MRI environment will be surprised by the level of noise generated during an examination. The gradient magnetic fields produce a loud thumping or tapping which can be very disconcerting for the awake .
