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A conservative approach used by some radiology facilities is to apply a 10-day rule only for examinations with the potential to deliver a high dose to the lower abdomen and pelvis, such as barium enemas and CT of the abdomen or pelvis. These facilities use a 28-day rule for all other examinations.
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If the patient is outside the first 10 days of the menstrual cycle and the exam is one for which the 10 day rule is normally applied, then the exam is rescheduled or the radiographer documents why the 10 day rule is not being followed e.g. - Exam urgent and justified - Previous hysterectomy - Periods absent/very irregular - Contraception in use
23 Φεβ 2018 · 10-DAY RULE (contd.) • The 10-day rule is linked to the teratogenic effect of radiation. • The responsibility for pregnancy determination lies with the referring physician, radiographer or radiologist or technician.
The 10-day rule was established by the International Commission on Radiological Protection to minimize the potential for performing x-ray exams on pregnant women. The basis of the rule was to do abdominal and pelvic x-ray exams only during the 10 days following the onset of menstruation.
n For high dose examinations, involving greater than 10 mGy to the fetus, the 10 day rule should be applied4. In practice this means that abdominal or pelvic CT and some barium studies should be scheduled in the first 10 days of their menstrual cycle. This timing refers to patients with a regular 28 day cycle and
The Health Protection Agency provides practical advice regarding the 10-day rule for what are classified as high-dose examinations.3 These are investigations resulting in doses to the uterus of ‘some tens of milligray’.
higher dose examinations on all potentially pregnant women to the first ten days of their menstrual cycle when conception is very unlikely to have occurred (the so-called ten-day rule)....
