Singapore legislation
Regulation 32
of Radiation Protection (Non-Ionising Radiation) Regulations
Regulation 32
Requirements for labelling of magnetic resonance imaging apparatus
Subregulation 1
Each magnetic resonance imaging apparatus shall bear, on the external surface of its housing, the following information:
the name and address of the manufacturer;
the name and address of the distributor, if the distributor is not the manufacturer;
the type and model designation;
the serial number;
the month and year of manufacture;
the static magnetic field strength in Tesla (T); and
the line voltage used for normal operation.
Subregulation 2
Each magnetic resonance imaging apparatus shall display a label which contains, at least, the following information:
a contraindications section stating that —
the apparatus is contraindicated for patients who have electrically, magnetically or mechanically activated implants; and
scanning patients with intracranial aneurysm clips is contraindicated unless the physician is certain that the clip is not magnetically active;
a warning statement, warning of —
the risk of scanning patients with implanted surgical clips or other ferromagnetic materials or engaged in occupations or activities which may cause ferromagnetic metal implants;
the risk of scanning fetuses and infants;
the risk to patients and other persons that might result from the inadvertent introduction of ferromagnetic materials into proximity with the magnet, along with a recommendation advising the user to establish a security zone to prevent such a risk;
the risk to persons with cardiac pacemakers or other implanted devices who enter a zone where the magnetic field exceeds 5 gauss;
the risk to decompensated cardiac patients, febrile patients and patients with impaired ability to perspire;
the risk of scanning patients with permanent eye-liner tattoo or who are wearing facial make-up which may contain ferromagnetic particles;
the risk of scanning patients suspected of having embedded conductive or magnetically active fragments in or near the eye; and
in the case of a superconducting magnet system, the risk of asphyxiation related to quench, along with a recommendation that the magnet room be designed to vent gases directly to the outside; and
a precaution concerning the scanning of patients —
who have a greater than normal potential for cardiac arrest;
who are likely to develop seizures or claustrophobic reactions; or
who are unconscious, heavily sedated or confused and with whom no reliable communication can be maintained.
Subregulation 3
Each magnetic resonance imaging apparatus shall be equipped with an operator’s manual which shall, in addition to appropriate directions for use, contain —
a description of the recommended training needed by the physician and the operator to operate the apparatus safely and effectively;
a recommendation to the user to establish an appropriate plan and an emergency procedure for removing and treating any person, who requires emergency assistance, rapidly from the magnet’s influence;
a description of quality assurance procedures recommended for the user including a detailed specification of all phantoms to be used;
recommended maintenance schedules, including designation of whether the user or company service personnel should perform them; and
device specifications from the summary specification sheet with ranges where applicable.