(1)H and hyperpolarized (3)He MR imaging of mouse with LPS-induced inflammation.

Olsson, Lars EGothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences (författare)

PURPOSE: To evaluate the lipopolysaccharide (LPS) model of chronic obstructive pulmonary disease (COPD) in mouse with (1)H and hyperpolarized (HP) (3)He MR imaging. MATERIALS AND METHODS: Axial slices of the lung volume were acquired with HP (3)He and (1)H MRI at 4, 24, and 48 h after LPS exposure. A quantitative ventilation index was calculated from two HP (3)He acquisitions. A bronchoalveolar lavage (BAL) for a cell count was performed following magnetic resonance imaging (MRI). RESULTS: The LPS exposure resulted in a significant increase of cells in BAL, with maximum at 48 h. Lesions on (3)He images were characterized by ventilation defects, whereas lesions on (1)H images were hyperintense and were attributed to edema. The number of lesions was at maximum at 48 h. At this time point, and for both (3)He and (1)H MRI, the volume of the lesions was significantly higher for LPS-exposed mice compared to controls. At 4, 24, and 48 h the ventilation index from the (3)He data was significantly smaller for the LPS-exposed animals compared to controls. CONCLUSION: The time point 48 h after LPS exposure was advantageous for MRI evaluation. Functional read-out with (3)He MRI seems to be more sensitive than conventional (1)H MRI.

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Radiologi och bildbehandling hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Radiology, Nuclear Medicine and Medical Imaging hsv//eng
Animals
Bronchoalveolar Lavage
Female
Helium
diagnostic use
Hydrogen
diagnostic use
Isotopes
diagnostic use
Lipopolysaccharides
Magnetic Resonance Imaging
methods
Mice
Mice
Inbred BALB C
Pulmonary Disease
Chronic Obstructive
chemically induced
pathology

Smailagic, Amir (författare)
Onnervik, Per-Ola (författare)
Hockings, Paul D (författare)
Göteborgs universitetInstitutionen för kliniska vetenskaper (creator_code:org_t)

Ingår i:Journal of magnetic resonance imaging : JMRI: Wiley29:4, s. 977-811053-18071522-2586

Av författaren/redakt...: Olsson, Lars E; Smailagic, Amir; Onnervik, Per-Ol ...; Hockings, Paul D

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MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Radiologi och bi ...

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