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Preoperative and postoperative H-1-MR spectroscopy changes in frontal deep white matter and the thalamus in idiopathic normal pressure hydrocephalus
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Neurologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Närsjukvården i centrala Östergötland, Neurologiska kliniken.
Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiofysik. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US.
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Neurologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Närsjukvården i centrala Östergötland, Neurologiska kliniken.
Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US.ORCID-id: 0000-0002-6189-0807
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2013 (engelsk)Inngår i: Journal of Neurology, Neurosurgery and Psychiatry, ISSN 0022-3050, E-ISSN 1468-330X, Vol. 84, nr 2, s. 188-193Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background In a previous study we found significantly decreased N-acetyl aspartate (NAA) and total N-acetyl (tNA) groups in the thalamus of patients with idiopathic normal pressure hydrocephalus (iNPH) compared with healthy individuals (HI). No significant difference between the groups could be found in the frontal deep white matter (FDWM). less thanbrgreater than less thanbrgreater thanObjective The primary aim of this study was to investigate if these metabolites in the thalamus were normalised after shunt surgery. The secondary aim was to investigate postoperative metabolic changes in FDWM. less thanbrgreater than less thanbrgreater thanSubjects and methods Fourteen patients with iNPH, mean age 74 years, and 15 HI, also mean age 74 years, were examined. Assessment of a motor score (MOSs) was performed before and after shunt surgery. Absolute quantitative H-1-MR spectroscopy (1.5 T, volumes of interest 2.5-3 ml) was performed on the patients in the FDWM and in the thalamus, before and 3 months after shunt surgery, and also once on the HI. The following metabolites were analysed: tNA, NAA, total creatine, total choline (tCho), myo-inositol (mIns), glutamate and lactate concentrations. MRI volumetric calculations of the lateral ventricles were also performed. less thanbrgreater than less thanbrgreater thanResults At 3 months postoperatively, we found no significant changes of tNA or NAA in the thalamus. In contrast, in the FDWM, there was a significant increase of tCho (p=0.01) and a borderline significant decrease of mIns (p=0.06). 12/14 patients were shunt responders (motor function). Median reduction of the lateral ventricle was 16%. A weak correlation between MOS and ventricular reduction was seen. less thanbrgreater than less thanbrgreater thanConclusions Normalisation of thalamic tNA and NAA could not be detected postoperatively. The increased tCho and decreased mIns in the FDWM postoperatively might relate to clinical improvement.

sted, utgiver, år, opplag, sider
BMJ Publishing Group , 2013. Vol. 84, nr 2, s. 188-193
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URN: urn:nbn:se:liu:diva-88662DOI: 10.1136/jnnp-2012-302190ISI: 000313554700014OAI: oai:DiVA.org:liu-88662DiVA, id: diva2:605498
Merknad

Funding Agencies|National Research Council (VR/NT)|2008-3368|University Hospital Research funds, CMIV||University of Linkoping||

Tilgjengelig fra: 2013-02-14 Laget: 2013-02-14 Sist oppdatert: 2019-06-14bibliografisk kontrollert

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Lundin, FredrikTisell, AndersLeijon, GöranDahlqvist Leinhard, OlofDavidsson, LeifGrönqvist, AndersLundberg, Peter
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