Abstract
Clinical assessment of adenoidal size is difficult and an objective means of measurement relies on radiology. The lateral soft tissue plain radiograph of the post-nasal space is the accepted method. The adenoidal–nasopharyngeal ratio (ANR) can be calculated by simple linear measurements as described by Fujioka et al. [Am. J. Roentgenol. 133 (1979) 401]. This method has proved reliable for accurate identification of children likely to benefit from adenoidectomy.A plain radiograph, however, involves exposure to X-ray radiation.MRI with its multiplanar ability, its excellent soft tissue contrast and no radiation, forms a more acceptable diagnostic tool. T1 weighted sagital scans were obtained in children referred for assessment of adenoidal hypertrophy. The scans were obtained on the 1.5 T SIEMENS Scanner. The scans were reviewed for quality, definition of the soft palate and the adenoids and for the ANR.This paper will emphasise this radiation free diagnostic tool for assessment of adenoidal hypertrophy in children and the greater clarification of soft tissues in the post-nasal space.
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