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  1. No Access

    Article

    Isotropic 3-D T2-weighted spin-echo for abdominal and pelvic MRI in children

    MRI has a fundamental role in paediatric imaging. The T2-weighted fast/turbo spin-echo sequence is important because it has high signal-to-noise ratio compared to gradient-echo sequences. It is usually acquire...

    Sílvia Costa Dias, Øystein E. Olsen in Pediatric Radiology (2012)

  2. Article

    Erratum to: 2011 – year of the bold step?

    Øystein E. Olsen, Catherine M. Owens in Pediatric Radiology (2011)

  3. Article

    2011 – year of the bold step?

    Øystein E. Olsen, Catherine M. Owens in Pediatric Radiology (2011)

  4. Article

    Open Access

    Implementing accountability for reasonableness framework at district level in Tanzania: a realist evaluation

    Despite the growing importance of the Accountability for Reasonableness (A4R) framework in priority setting worldwide, there is still an inadequate understanding of the processes and mechanisms underlying its ...

    Stephen Maluka, Peter Kamuzora, Miguel SanSebastián, Jens Byskov in Implementation Science (2011)

  5. No Access

    Article

    High signal in bone marrow at diffusion-weighted imaging with body background suppression (DWIBS) in healthy children

    In our experience, diffusion-weighted imaging with body background suppression (DWIBS) is hard to interpret in children who commonly have foci of restricted diffusion in their skeletons unrelated to pathology,...

    Lil-Sofie Ording Müller, Derk Avenarius, Øystein E. Olsen in Pediatric Radiology (2011)

  6. No Access

    Article

    Patterns of shift in ADC distributions in abdominal tumours during chemotherapy—feasibility study

    Apparent diffusion coefficient (ADC) relates to tissue cellularity, and change in ADC during chemotherapy may be a promising tool for assessing oncological response.

    Kirsteen McDonald, Neil J. Sebire, John Anderson, Øystein E. Olsen in Pediatric Radiology (2011)

  7. Article

    Open Access

    The impact of global health initiatives on trust in health care provision under extreme resource scarcity: presenting an agenda for debate from a case study of emergency obstetric care in Northern Tanzania

    Through the nearly three decades that have passed since the Alma Ata conference on Primary Health Care, a wide range of global health initiatives and ideas have been advocated to improve the health of people l...

    Øystein E Olsen in Health Research Policy and Systems (2010)

  8. Article

    Open Access

    Women's experiences and views about costs of seeking malaria chemoprevention and other antenatal services: a qualitative study from two districts in rural Tanzania

    The Tanzanian government recommends women who attend antenatal care (ANC) clinics to accept receiving intermittent preventive treatment against malaria during pregnancy (IPTp) and vouchers for insecticide-trea...

    Godfrey M Mubyazi, Paul Bloch, Pascal Magnussen, Øystein E Olsen in Malaria Journal (2010)

  9. Article

    Open Access

    Accountable priority setting for trust in health systems - the need for research into a new approach for strengthening sustainable health action in develo** countries

    Despite multiple efforts to strengthen health systems in low and middle income countries, intended sustainable improvements in health outcomes have not been shown. To date most priority setting initiatives in ...

    Jens Byskov, Paul Bloch, Astrid Blystad in Health Research Policy and Systems (2009)

  10. Article

    Imaging of abdominal tumours: CT or MRI?

    The scope of this review is to discuss a theoretical approach to imaging policy, particularly in the perspective of radiation risk reduction. Decisions are ideally driven by empirical evidence about efficacy a...

    Øystein E. Olsen in Pediatric Radiology (2009)

  11. No Access

    Article

    What is the value of magnetic resonance venography in children before renal transplantation?

    Radiological evaluation before renal transplantation includes imaging of vascular anatomy, as thrombosis, narrowing and anomalies of the inferior vena cava (IVC) and/or iliac veins (IV) can influence the surgi...

    Mark G. Meister, Øystein E. Olsen, Rose de Bruyn, Kieran McHugh in Pediatric Nephrology (2008)

  12. No Access

    Article

    Imaging of abdominal tumours: CT or MRI?

    Øystein E. Olsen in Pediatric Radiology (2008)

  13. Article

    Open Access

    Gadolinium and nephrogenic systemic fibrosis: time to tighten practice

    Nephrogenic systemic fibrosis (NSF) is a relatively new entity, first described in 1997. Few cases have been reported, but the disease has high morbidity and mortality. To date it has been seen exclusively in ...

    Iosif A. Mendichovszky, Stephen D. Marks, Clare M. Simcock in Pediatric Radiology (2008)

  14. No Access

    Article

    Bilateral disease and new trends in Wilms tumour

    Wilms tumour is a great therapeutic success story within paediatric oncology; its prognosis is excellent. Although mainly sporadic, occurring in otherwise well children, it occurs in a small number of genetica...

    Catherine M. Owens, Hervé J. Brisse, Øystein E. Olsen, Joanna Begent in Pediatric Radiology (2008)

  15. Article

    Open Access

    2005 PRETEXT: a revised staging system for primary malignant liver tumours of childhood developed by the SIOPEL group

    Over the last 15 years, various oncology groups throughout the world have used the PRETEXT system for staging malignant primary liver tumours of childhood. This paper, written by members of the radiology and s...

    Derek J. Roebuck, Daniel Aronson, Philippe Clapuyt, Piotr Czauderna in Pediatric Radiology (2007)

  16. No Access

    Article

    Atypical abdominal paediatric lymphangiomatosis: diagnosis aided by diffusion-weighted MRI

    We report a 4-year-old child with a mesenteric mass, which on ultrasound, CT and conventional MRI appeared solid, raising lymphoma as a possible diagnosis. Diffusion weighted MRI (DW-MRI), however, suggested a...

    Paul D. Humphries, Catherine S. Wynne, Neil J. Sebire in Pediatric Radiology (2006)

  17. No Access

    Article

    Changes in computed tomography features following preoperative chemotherapy for nephroblastoma: relation to histopathological classification

    The objective of this study is to assess computed tomography (CT) changes, both volume estimates and subjective features, following preoperative chemotherapy for nephroblastoma (Wilms’ tumour) in patients trea...

    Øystein E. Olsen, Annmarie C. Jeanes, Neil J. Sebire in European Radiology (2004)

  18. No Access

    Article

    Chronic pneumonitis of infancy: high-resolution CT findings

    Chronic pneumonitis of infancy (CPI) is a very rare entity. We report the chest radiography and high-resolution CT (HRCT) findings in an infant with histopathologically confirmed CPI. The child was admitted fo...

    Øystein E. Olsen, Neil J. Sebire, Adam Jaffe, Catherine M. Owens in Pediatric Radiology (2004)

  19. No Access

    Article

    Routine magnetic resonance imaging of the spine in children with Gaucher disease: does it help therapeutic management?

    Routine magnetic resonance imaging (MRI) surveillance of bone marrow change in patients with Gaucher disease (GD) is recommended, but interpretation of imaging findings in the develo** skeleton may be diffic...

    Øystein E. Olsen, Kieran McHugh, Ashok Vellodi in Pediatric Radiology (2003)

  20. No Access

    Article

    Skeletal measurements among infants who die during the perinatal period: new population-based reference

    Background: Reference data for roentgen skeletal measurements among infants who die during the perinatal period is not available, although it might prove helpful in the study of pre-autopsy radio...

    Øystein E. Olsen, Rolv T. Lie, Helga Maartmann-Moe, Jouko Pirhonen in Pediatric Radiology (2002)

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