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Are English CT departments and radiographers prepared for the morbidly obese patient?

Radiography 2017 August
INTRODUCTION: Morbid obesity is increasing in England, as is the use of CT scanning. All CT scanners have weight and body width limits. It is imperative that the radiographer performing the scan is aware of these limits, particularly in an emergency. This study aim was to determine whether radiographers are aware of their scanner limits, where they may be able to send a patient who exceeds these limits and whether a formal protocol exists. The secondary aim of the study was to determine capacities of scanners in acute trusts throughout England.

METHODS: CT radiographers from 86 English Hospital Trusts with Emergency Departments were contacted and asked questions regarding their CT scanners and their practice of CT scanning morbidly obese patients.

RESULTS: 21% of CT radiographers did not know the maximum width capacity of their scanner. Only 24% knew where a nearby larger capacity scanner was located and only 3% had a formal protocol for scanning obese patients. Weight capacities ranged from 147 to 305 kg. Width capacities ranged from 55 to 100 cm. 70% had weight capacity 226 kg or less and 70% had size capacity of 78 cm or less.

CONCLUSION: Patients over 226 kg or 78 cm may not be accommodated in most (70%) trusts in England. Lack of knowledge of scanner capacities and alternative scanners for morbidly obese patients could have consequences for these patients, particularly in an emergency. The authors advise that all acute trusts have a protocol regarding CT scanning morbidly obese to prevent delays in accessing imaging.

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