Størmer Jan, Norum Jan, Olsen Lena Ringstad, Eldevik Petter, Broderstad Ann Ragnhild
Department of Radiology, University Hospital of North Norway, Tromsø, Norway.
Int J Circumpolar Health. 2012 Mar 23;71:17620. doi: 10.3402/ijch.v71i0.17620.
The Northern Norway Regional Health Authority trust aims to offer a high quality specialist health care to all inhabitants. The objective of this study was to document the consumption of medical imaging [conventional radiography (CR), computerised tomography (CT), magnetic resonance (MR), ultrasound (US)].
The eight municipalities in northern Norway included in the administration area of the Sami language law (Sami group - 132,490 persons/year in the period 2003-2009, mean/year 19,363 inhabitants) were matched with a control group of 11 municipalities (non-Sami group - 135,539 persons/year, mean/year 18,927 inhabitants). Population data was accessed from Statistics Norway. Data on imaging exams were derived from a regional database including production data from all public and private institutions within the region. All four main modality groups (CR, CT, MR, US) were analysed. Variations for imaging frequency on each modality were compared between the Sami and non-Sami municipalities.
A total of 278,832 exams were performed during study period. The age adjusted exam rate (all modalities) was significantly higher (p < 0.001) in non-Sami (females and males) group. There was no difference with regard to conventional radiography (CR) (p = 0.855). Whereas MR (p < 0.001) imaging was more common in the Sami group, CT (p < 0.001) and US (p = 0.003) exams were more frequently used in the control group.
People living in Sami speaking communities experienced significantly less CT and US exams, but had more MR exams than the control group. A relatively high physical activity, obesity and a lower risk of cancer may be explanations.
挪威北部地区卫生局信托旨在为所有居民提供高质量的专科医疗服务。本研究的目的是记录医学影像（传统放射摄影（CR）、计算机断层扫描（CT）、磁共振成像（MR）、超声（US））的使用情况。
将挪威北部纳入萨米语法律管理区域的8个自治市（萨米族组——2003年至2009年期间每年132,490人，年均19,363名居民）与11个自治市的对照组（非萨米族组——每年135,539人，年均18,927名居民）进行匹配。人口数据来自挪威统计局。影像检查数据来自一个区域数据库，该数据库包含该区域内所有公立和私立机构的生产数据。对所有四个主要模态组（CR、CT、MR、US）进行了分析。比较了萨米族和非萨米族自治市在每种模态上影像检查频率的差异。
研究期间共进行了278,832次检查。非萨米族（女性和男性）组经年龄调整后的检查率（所有模态）显著更高（p < 0.001）。传统放射摄影（CR）方面无差异（p = 0.855）。而磁共振成像（MR）（p < 0.001）在萨米族组中更常见，CT（p < 0.001）和超声（US）（p = 0.003）检查在对照组中使用更频繁。
与对照组相比，生活在讲萨米语社区的人群接受CT和超声检查的次数明显较少，但磁共振成像检查更多。较高的体力活动水平、肥胖以及较低的癌症风险可能是原因。
