The purpose of this study was to assess the suitability of different radiation dosimetry methods and record radiation exposures during paediatric catheterization. Three methods of dosimetry were employed: thermoluminescent dosimetry (TLD), dose-area product and calculation of entrance surface dose from calibrated exposure factors. Examinations included bi-plane fluoroscopy, and cineangiography for diagnosis and treatment of congenital heart disease. The most suitable method of radiation dosimetry for cardiac catheterization is the use of calculated entrance dose or a dose-area product meter. Children were exposed to high levels of radiation during cardiac catheterization but there was a wide variation in radiation dosage. Careful consideration should be given to the suitability of radiation dosimetry for cardiac catheterization.

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We conclude that high negative pressure and deep-suctioning causes RUL collapse in children. Any lobar collapse not only prolongs the child's stay in intensive care, but can be associated with further morbidity which may have a serious implication. By improving suctioning technique this morbidity can be significantly reduced.

The purpose of this pictorial review is to demonstrate the imaging features of a range of cranial injuries associated with birth at term. Scalp and skull injuries include simple cephalhaematoma, osteomyelitis of the skull vault from infected cephalhaematoma, subgaleal haemorrhage and skull fracture. Intracranial injuries include extradural, subdural and subarachnoid haemorrhage, leptomeningeal cyst and brain infarct. Radiologists need to be aware of the range of cranial injuries following birth and their differentiating features.

Breast masses are uncommon in the first two decades of life. 17 girls aged between 2 and 15 years who presented over a 5-year period are reviewed retrospectively. The cases comprised inflammation (11), asymmetrical gynaecomastia (1), precocious puberty (1), giant juvenile fibroadenoma (1), primary rhabdomyosarcoma (1), lymphoma (1), and metastatic neuroblastoma (1). Ultrasound was useful in all cases in identifying the abnormality and guiding any further investigation.