SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Wikström Johan) "

Sökning: WFRF:(Wikström Johan)

  • Resultat 41-50 av 247
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
41.
  • Amini, Hashem (författare)
  • Fetal Anomalies : Surveillance and Diagnostic Accuracy of Ultrasound and Magnetic Resonance Imaging
  • 2010
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The aims were to investigate the accuracy of ultrasound in diagnosis of structural fetal anomalies with special focus on false positive findings (I), to evaluate the additional value of second trimester fetal MRI on pregnancy management (II-III) and to estimate the ascertainment in the Swedish Birth Defects Registry and incidence of spina bifida and cleft lip/palate (IV). Retrospectively, 328 fetal autopsies were identified where pregnancies were terminated due to ultrasonographically diagnosed fetal anomalies. In 175 (53.4 %) cases ultrasound and fetal autopsy were identical, in 124 (37.8 %) ultrasound was almost correct, in 23 (7.0 %)  ultrasound diagnoses could not be verified, but fetal autopsy showed other anomalies with at least the same prognostic value and in six (1.8 %)  ultrasound diagnosis could not be verified and autopsy showed no or less severe anomalies (I). Prospectively, 29 pregnancies with CNS- (II) and 63 with non-CNS-anomalies (III) were included. In the CNS study MRI provided no additional information in 18 fetuses (62 %), additional information without changing the management in 8 (28 %) and additional information altering the pregnancy management in 3 (10%). In the non-CNS study the corresponding figures were 43 (68 %), 17 (27 %) and three (5 %), respectively. MRI in the second trimester might be a clinically valuable adjunct to ultrasound for the evaluation of CNS anomalies, especially when the ultrasound is inconclusive due to maternal obesity (II) and in non-CNS anomalies in cases of diaphragmatic hernia or oligohydramnios (III). In newborns, the ascertainments of birth defects are relatively high and assessable, but in pregnancy terminations they are lower or unknown. The incidence of newborns with spina bifida has decreased because of an increased rate of pregnancy terminations (>60%). There is room for improvement concerning the reporting of anomalies from terminated pregnancies (IV).
  •  
42.
  • Amini, Hashem, et al. (författare)
  • Second trimester fetal magnetic resonance imaging improves diagnosis of non-central nervous system anomalies
  • 2011
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 0001-6349 .- 1600-0412. ; 90:4, s. 380-389
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives. To evaluate the additional information of second trimester magnetic resonance imaging (MRI) compared to ultrasound in fetuses with identified or suspected non-CNS anomalies and to study the clinical impact of the MRI information on pregnancy management. Design. Prospective study during 2003-2007. The fetal MRI examination was planned to be performed within three days after the ultrasound. Setting. Uppsala University hospital. Material and methods. Sixty-three women, where the second trimester ultrasound identified or raised suspicion of fetal anomalies were included. Ultrasound was compared to MRI in relation to the final diagnosis, which was based on the assessment of all available data including post-partum clinical follow-up and autopsy results. Main outcome measures. Evaluation of the additional information gained from MRI and the consequences it had on pregnancy management. Results. The mean interval between ultrasound and MRI was 2.6 days (range 0-15). In 42 (67%) cases MRI was performed within three days. All MRI examinations were assessable. In 43 (68%) fetuses MRI provided no additional information, in 17 (27%) MRI added information without changing the management and in three (5%) MRI provided additional information which changed the management. All these three cases had oligohydramnios. In all six cases of diaphragmatic hernia MRI provided additional information. Conclusions. Fetal MRI of non-CNS anomalies in the second trimester seems to be a valuable adjunct to ultrasound diagnosis of non-CNS anomalies, especially in cases of oligohydramnios and diaphragmatic hernia.
  •  
43.
  • Amini, Hashem, 1960-, et al. (författare)
  • The Clinical Impact of Fetal Magnetic Resonance Imaging on Management of CNS Anomalies in the Second Trimester of Pregnancy
  • 2010
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 0001-6349 .- 1600-0412. ; 89:12, s. 1571-1581
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: To evaluate the additional information of second trimester magnetic resonance imaging (MRI) compared to ultrasound in fetuses with identified or suspected CNS anomalies and to study the clinical impact of the information on pregnancy management. Design: Prospective study during 2004-2007. The fetal MRI examination was planned to be performed within three days after the ultrasound. Setting: Uppsala University hospital.     Subjects: Twenty-nine pregnant women where second trimester ultrasound identified or suspected fetal CNS anomalies. Main outcome measures: Evaluation of the additional information gained from MRI and the consequence it had on pregnancy management. Results: The mean interval between ultrasound and MRI was 1.6 days (range 0 –7). In 18 fetuses (62 %)  MRI verified the ultrasound diagnosis but provided no additional information, while in 8 (28 %) MRI gave additional information without changing the management. In 3 (10 %), MRI provided additional information that changed the management of the pregnancy. Two of these women were obese. Conclusions: Fetal MRI in the second trimester might be a clinically valuable adjunct to ultrasound for the evaluation of CNS anomalies, especially when ultrasound is inconclusive due to maternal obesity.  
  •  
44.
  • Amini, Hashem, 1960-, et al. (författare)
  • The Clinical Impact of Fetal Magnetic Resonance Imaging on Management of Non-CNS Anomalies in the Second Trimester of Pregnancy
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Objectives: To evaluate the additional information of second trimester MRI compared to ultrasound in fetuses with identified or suspected non-CNS anomalies and to study the clinical impact of the MRI information on pregnancy management. Methods: Sixty-three women were included, where the second trimester ultrasound identified or raised suspicion of fetal anomalies. Ultrasound was compared to MRI in relation to the final diagnosis, fetal autopsy if performed or postnatal diagnosis. The additional information of MRI and effect on pregnancy management was estimated in consensus. Results: The mean gestational age at the last ultrasound before MRI was 18+1 weeks (range 13+0-21+5). The mean interval between ultrasound and MRI was 2.6 days (range 0-15). In 42 (67 %) cases MRI was performed within three days. All MRI examinations were assessable. In 43 (68 %) fetuses MRI provided no additional information, in 17 (27 %) MRI added information without changing the management and in three (5 %) MRI provided additional information which changed the management. These three cases had all oligohydramnios. In all six cases of diaphragmatic hernia MRI provided additional information. Conclusions: Fetal MRI of non-CNS anomalies is feasible in the second trimester and gives additional information in nearly a third of cases. It may provide a clinically valuable adjunct to ultrasound especially in cases of diaphragmatic hernia or oligohydramnios.
  •  
45.
  • Andersson, Jacob, et al. (författare)
  • Differences in head circumference and neuroimaging characteristics : what can they tell about the aetiologies of infant subdural haematoma?
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Background Acute (ASDH) and chronic subdural haematoma (CSDH) in infants have been regarded as highly specific for abuse. A recent study showed different risk factors for ASDH and CSDH, indicating that CSDH in many cases was related to external hydrocephalus. Purpose To investigate to what extent external hydrocephalus may explain findings and symptoms interpreted as signs of abusive head trauma. Material and methods Eighty-five infants with ASDH (n=16) and CSDH (n=69) were reviewed with regard to cranio-cortical- (CCW), sino-cortical- (SCW), frontal interhemispheric-(IHW), subarachnoid space width (SSW) and head circumference (HC). In infants with unilateral SDH, the correlation between the contralateral SSW and the ipsilateral CCW and SDH width was calculated. A correlation would imply that the CSDH replaces an already existing extracerebral space.Results Infants with CSDH had significantly higher CCW, SCW, IHW and SSW than infants with ASDH (p < 0.05). The ipsilateral CCW (R = 0.92, p < 0.001) and SDH width (R = 0.81, p < 0.01) were correlated to the contralateral SSW. Increased HC was more prevalent in Infants with CSDH (71%) than in infants with ASDH (14%) (p < 0.01). Forty-two infants, all with CSDH, had at least one of CCW, SCW or IHW ≥ 95th percentile. Twenty infants, all with CSDH, had CCW, SCW and IHW > 5 mm and increased HC. Conclusion A significant proportion of infants with CSDH may have external hydrocephalus as an underlying cause and that parts of the widened subarachnoid space in some infants is replaced by a CSDH.
  •  
46.
  • Andersson, Jacob, et al. (författare)
  • Different vulnerability profiles in acute compared to chronic subdural haematoma amongst infants with suspected abusive head trauma
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Background: In a register study based on ICD 10 coding, there was a similar vulnerability profile (male sex, preterm and small for gestational age) in infants diagnosed with non-traumatic subdural haematoma (SDH) and infants having SDH with abuse diagnosis. However, ICD-10 does not separate between acute (ASDH) and chronic subdural haematoma (CSDH). Purpose: To determine the vulnerability profile in infants having CSDH and ASDH, respectively. Material and methods: A descriptive review of infants with SDH/hygroma examined by the Swedish National Board of Forensic Medicine between 1994 and 2018. Included cases (n=85) were analysed with regard to possible vulnerability factors. Results: Type of subdural fluid could be determined in 85 of 96 cases. Sixteen infants had ASDH and 69 CSDH. Infants with ASDH had the peak incidence during the first month of life, 56% were male, 6% were premature, 13% were twins and 44% died. In infants with CSDH, the peak incidence occurred during the third month of life, 69% were male, 34% were premature, 12% were twins and 4% died. Conclusion: CSDH, but not ASDH, is associated with factors suggesting non-traumatic pathogenesis, for which reason CSDH and ASDH should be analysed separately to extend the knowledge regarding the aetiology of SDH during infancy.   
  •  
47.
  • Andersson, Jacob, et al. (författare)
  • External Hydrocephalus as a Cause of Infant Subdural Hematoma : Epidemiological and Radiological Investigations of Infants Suspected of Being Abused
  • 2022
  • Ingår i: Pediatric Neurology. - : Elsevier. - 0887-8994 .- 1873-5150. ; 126, s. 26-34
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Acute subdural hematoma (ASDH) and chronic subdural hematoma (CSDH) in infants have been regarded as highly specific for abuse. Other causes of CSDH have not been investigated in a large population.Purpose: The purpose of this study was to investigate to what extent external hydrocephalus is present in infants with ASDH and CSDH undergoing evaluation for abuse.Material and methods: Eighty-five infants suspected of being abused, with ASDH (n = 16) or CSDH (n = 69), were reviewed regarding age, risk factor profiles, craniocortical width (CCW), sinocortical width (SCW), frontal interhemispheric width (IHW), subarachnoid space width (SSW), and head circumference (HC). In infants with unilateral subdural hematoma (SDH), correlations between contralateral SSW and ipsilateral CCW and SDH width were investigated.Results: Infants with CSDH had significantly lower mortality, were more often premature and male, and had significantly higher CCW, SCW, IHW, and SSW than infants with ASDH (P < 0.05). Ipsilateral CCW (R = 0.92, P < 0.001) and SDH width (R = 0.81, P < 0.01) correlated with contralateral SSW. Increased HC was more prevalent in infants with CSDH (71%) than in infants with ASDH (14%) (P < 0.01). Forty-two infants, all with CSDH, had at least one of CCW, SCW, or IHW ≥95th percentile. Twenty infants, all with CSDH, had CCW, SCW, and IHW >5 mm, in addition to increased HC.Conclusion: A substantial proportion of infants with CSDH who had been suspected of being abused had findings suggesting external hydrocephalus.
  •  
48.
  • Aronsson, Thomas, 1963-, et al. (författare)
  • Regional income growth and net migration in Sweden, 1970-1995
  • 2001
  • Ingår i: Regional studies. - : Taylor & Francis Group. - 0034-3404 .- 1360-0591. ; 35:9, s. 823-830
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper concerns the regional growth pattern in Sweden, and the purpose is to analyse what factors determine the growth rate of average income and the net migration at the regional level. We find a negative relationship between the initial level of regional average income and subsequent income growth. The results also imply that the initial endowment of human capital (measured as the percentage of the population with higher education) has a positive effect on the subsequent net migration. Other determinants of regional income growth and population movements are 'fixed endowments' (related to geography and climate) and regional labour market characteristics.
  •  
49.
  • Aronsson, Thomas, 1963-, et al. (författare)
  • The Impact of regional public expenditures on the local decision to spend
  • 2000
  • Ingår i: Regional Science and Urban Economics. - 0166-0462 .- 1879-2308. ; 30:2, s. 185-202
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper studies the hypothesis that local (municipal) expenditures in part can be explained by the expenditures of the regional (county) government. To accomplish this task, we derive and estimate a model of local public (municipal) spending that is defined conditional on the level of regional public expenditures. The empirical analysis is based on panel data from the Swedish local public sector for the time period 1981–1986. Among the results, we find that the hypothesis that regional expenditures are weakly separable from local expenditures can be rejected. However, we cannot reject the hypothesis that the regional expenditures are weakly exogenous in the local expenditure equation.
  •  
50.
  • Bajic, Dragan, et al. (författare)
  • Asymmetric Development of the Hippocampal Region Is Common : A Fetal MR Imaging Study
  • 2012
  • Ingår i: American Journal of Neuroradiology. - 0195-6108 .- 1936-959X. ; 33:3, s. 513-518
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND AND PURPOSE: Hippocampal development is poorly understood. This study evaluated the normal development of the hippocampal region during the fetal period by using MR imaging. MATERIALS AND METHODS: MR images of 63 fetuses without intracranial pathology were reviewed independently by 2 radiologists with no knowledge of the fetal GA. Three MR images were performed postmortem and 60 in vivo. The progress of hippocampal inversion was analyzed in coronal sections, and the left and right sides of the hippocampal region were compared in every case. RESULTS: The fetuses in the postmortem examinations were at GWs 17-18 and in the in vivo examinations, at GWs 19-36. The hippocampal sulcus was open, bi- or unilaterally, in 39 fetuses. The oldest was at GW 32. The sulcus was closed at GW 21 at the earliest, unilaterally. In 26/63 fetuses (41%), the deepening or closure of the hippocampal sulcus or hippocampal inversion was asymmetric; in 23 fetuses, the right side developed faster. A shallow collateral sulcus was found earliest at GW 17. A deep collateral sulcus was visible earliest at GW 26 unilaterally, but in all fetuses from GW 31 onward, it was seen bilaterally. The orientation of the collateral sulcus was not related to the GA. CONCLUSIONS: There are wide individual temporal variations in the development and the inversion process of the hippocampal sulcus as well as in the formation of the collateral sulcus. Asymmetric development is common, and in most of the asymmetric cases, the right hippocampus develops faster.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 41-50 av 247
Typ av publikation
tidskriftsartikel (183)
doktorsavhandling (17)
konferensbidrag (15)
annan publikation (14)
rapport (12)
bok (3)
visa fler...
bokkapitel (2)
samlingsverk (redaktörskap) (1)
visa färre...
Typ av innehåll
refereegranskat (184)
övrigt vetenskapligt/konstnärligt (59)
populärvet., debatt m.m. (4)
Författare/redaktör
Wikström, Johan (92)
Wikström, Johan, 196 ... (53)
Sundström Poromaa, I ... (21)
Wikström, Johan, Pro ... (20)
Ahlström, Håkan (17)
Johansson, Lars (15)
visa fler...
Wikström, Anna-Karin ... (14)
Raininko, Raili (13)
Enblad, Per (11)
Comasco, Erika, 1982 ... (11)
Sundström Poromaa, I ... (11)
Engman, Jonas (10)
Fahlström, Markus (10)
Lanzenberger, Rupert (10)
Lind, Lars (9)
Larsson, Elna-Marie (9)
Strand, Robin, 1978- (9)
Gingnell, Malin (9)
Wikström, Anna-Karin (8)
Wester, Knut (8)
Bannbers, Elin (8)
Hansen, Tomas (8)
Fredrikson, Mats (7)
Abu Hamdeh, Sami (7)
Lewén, Anders, 1965- (7)
Canto Moreira, Nuno (7)
Bergman, Lina (6)
Gingnell, Malin, 198 ... (6)
Banerjee, Subhashis (6)
Toumpanakis, Dimitri ... (6)
Morell, Arvid (6)
Bannbers, Elin, 1984 ... (6)
Larsson, Anders (5)
Josefson, Mats (5)
Trygg, Johan (5)
Kumlien, Eva (5)
Ronne-Engström, Elis ... (5)
Dhara, Ashis Kumar (5)
Persson, Jonas (5)
Libard, Sylwia (5)
Svedung-Wettervik, T ... (5)
Axelsson, Ove (5)
Wikström, Johan, Doc ... (5)
Sandblad, Bengt (5)
Andersson, Jacob (5)
Wikström, Håkan (5)
Kask, Kristiina (5)
Nelander, Maria (5)
Borota, Ljubisa (5)
Ortiz-Nieto, Francis ... (5)
visa färre...
Lärosäte
Uppsala universitet (183)
Umeå universitet (32)
Karolinska Institutet (29)
Chalmers tekniska högskola (10)
Göteborgs universitet (8)
Kungliga Tekniska Högskolan (8)
visa fler...
Lunds universitet (8)
Stockholms universitet (4)
Örebro universitet (4)
RISE (4)
Karlstads universitet (3)
Sveriges Lantbruksuniversitet (3)
Luleå tekniska universitet (2)
Linköpings universitet (2)
Gymnastik- och idrottshögskolan (2)
Högskolan Dalarna (2)
VTI - Statens väg- och transportforskningsinstitut (2)
Jönköping University (1)
Mittuniversitetet (1)
Södertörns högskola (1)
visa färre...
Språk
Engelska (227)
Svenska (15)
Latin (3)
Norska (1)
Odefinierat språk (1)
Forskningsämne (UKÄ/SCB)
Medicin och hälsovetenskap (131)
Teknik (24)
Naturvetenskap (22)
Samhällsvetenskap (14)
Lantbruksvetenskap (3)
Humaniora (3)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy