Patterns and trends of Computed Tomography usage among pediatric and young adult patients in a private hospital in Rio de Janeiro, 2005-2015

Abstract

Computed tomography (CT) scanning is a relatively high-dose procedure which use has been rapidly increasing in many countries, although a decline has been observed recently in some developed countries. Relatively little is known about CT usage in Brazil. A recent report showed that number of CT procedures among outpatients of the Brazilian public healthcare system (SUS) tripled from 2001 to 2011 and about 13% of all CTs procedures were performed in pediatric and young adult patients. In the present study, we aimed to evaluate CT use in the private healthcare system, where the larger availability of CT scanners may result in a different CT usage pattern. We evaluated data from 15,892 CT procedures underwent by children and young adults (<20 years) between 2005 and 2015 in a private general hospital in the city of Rio de Janeiro. These procedures represented about 8% of the overall number of CT scans in the hospital over the study period. The number of CT examinations increased 10% per year, from 902 in 2005 to 2,376 in 2015. Head/neck was the most frequently examined body anatomical region for all age groups, except for patients aged 15-19 years for whom abdomen/pelvis was the most common scanned region. One third of the patients underwent more than one CT examination in the study hospital, with multiple CT exams increasing with patient age. The greater availability of other diagnostic imaging examinations in the private setting, such as magnetic resonance and ultrasound, could have contributed to the lower proportion of pediatric and young adult CT in the study hospital. The rapid increase of pediatric CT usage in the public and private healthcare setting reinforces the need for initiatives to avoid unwarranted CT exposure in Brazil.

Comparison of organ and effective dose estimations from different Monte Carlo simulation‐based software methods in infant CT and comparison with direct phantom measurements

“… 2 Even with this knowledge, the total number of yearly CT examinations grows. 3 , 4 Large‐scale studies have indicated the detrimental impact of ionizing radiation on human tissue, with the increased radiosensitivity of pediatric populations compared to adult populations, an area of particular concern. 5 During a child's development, cells proliferate more rapidly.…”

“…In the USA, CT radiation doses account for over half the population effective dose received from medical sources 2 . Even with this knowledge, the total number of yearly CT examinations grows 3,4 . Large‐scale studies have indicated the detrimental impact of ionizing radiation on human tissue, with the increased radiosensitivity of pediatric populations compared to adult populations, an area of particular concern 5 .…”

Patterns and trends of pediatric and young adult computed tomography use in Brazil: 2008-2014

“…• 2020 3 -the public healthcare system of Brazil [28] -between 2008 and 2011, when CT usage increased by 13% per year. Another study [29], focused on CT procedures in a single private general hospital in the city of Rio de Janeiro, reported that patients below 20 years of age underwent around 8% of all CT examinations performed between 2005 and 2015, with an annual increasing rate of 10%.…”