» Articles » PMID: 12750863

Detecting the Subregion Proceeding to Infarction in Hypoperfused Cerebral Tissue: a Study with Diffusion and Perfusion Weighted MRI

Overview
Journal Neuroradiology
Specialties Neurology
Radiology
Date 2003 May 17
PMID 12750863
Citations 4
Authors
Affiliations
Soon will be listed here.
Abstract

Diffusion and perfusion weighted MRI have been widely used in ischaemic stroke. We studied 17 patients in whom ischaemic areas showed an ischaemic core, an area of infarct growth and hypoperfused but ultimately surviving tissue. Apparent diffusion coefficients (ADC) were measured on days 1, 2, and 8 in the three subregions and in contralateral control areas. Cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time (MTT) were measured in these regions on day 1 perfusion maps. On day 1, the ischaemic core had very low ADC and CBF and increased MTT. The ADC in the ischaemic core gradually increased during the week. The area of infarct growth on day 1 had slightly but significantly decreased ADC (96% of control, P=0.028), moderately decreased CBF and increased MTT. On day 1 the hypoperfused but surviving tissue had slightly but significantly increased ADC (103% of control, P=0.001), mildly decreased CBF and increased CBV and MTT. The ADC of the area of infarct growth decreased to the same level as in the ischaemic core on days 2 and 8. That of surviving tissue was still above normal on day 2 (103% of control), but had returned to the normal level by day 8. Measurement of ADC combined with perfusion MRI may help distinguish different subregions in acutely hypoperfused brain.

Citing Articles

Multimodal imaging in acute ischemic stroke.

Copen W Curr Treat Options Cardiovasc Med. 2015; 17(3):368.

PMID: 25732923 DOI: 10.1007/s11936-015-0368-z.


Spatial distribution of perfusion abnormality in acute MCA occlusion is associated with likelihood of later recanalization.

Siemonsen S, Forkert N, Hansen A, Kemmling A, Thomalla G, Fiehler J J Cereb Blood Flow Metab. 2014; 34(5):813-9.

PMID: 24473482 PMC: 4013754. DOI: 10.1038/jcbfm.2014.13.


Does diffusion-weighted imaging represent the ischemic core? An evidence-based systematic review.

Kranz P, Eastwood J AJNR Am J Neuroradiol. 2009; 30(6):1206-12.

PMID: 19357385 PMC: 7051331. DOI: 10.3174/ajnr.A1547.


Systematic review of CT and MR perfusion imaging for assessment of acute cerebrovascular disease.

Provenzale J, Shah K, Patel U, McCrory D AJNR Am J Neuroradiol. 2008; 29(8):1476-82.

PMID: 18583410 PMC: 8119039. DOI: 10.3174/ajnr.A1161.

References
1.
Parsons M, Yang Q, Barber P, Darby D, Desmond P, Gerraty R . Perfusion magnetic resonance imaging maps in hyperacute stroke: relative cerebral blood flow most accurately identifies tissue destined to infarct. Stroke. 2001; 32(7):1581-7. DOI: 10.1161/01.str.32.7.1581. View

2.
Xue M, Ng T, Majors A, Furlan A, Awad I, Jones S . Sensitivity of magnetic resonance diffusion-weighted imaging and regional relationship between the apparent diffusion coefficient and cerebral blood flow in rat focal cerebral ischemia. Stroke. 1995; 26(4):667-74; discussion 674-5. DOI: 10.1161/01.str.26.4.667. View

3.
Marks M, Tong D, Beaulieu C, Albers G, de Crespigny A, Moseley M . Evaluation of early reperfusion and i.v. tPA therapy using diffusion- and perfusion-weighted MRI. Neurology. 1999; 52(9):1792-8. DOI: 10.1212/wnl.52.9.1792. View

4.
Moseley M, Cohen Y, Mintorovitch J, Chileuitt L, Shimizu H, Kucharczyk J . Early detection of regional cerebral ischemia in cats: comparison of diffusion- and T2-weighted MRI and spectroscopy. Magn Reson Med. 1990; 14(2):330-46. DOI: 10.1002/mrm.1910140218. View

5.
Wirestam R, Borg M, Brockstedt S, Lindgren A, Holtas S, Stahlberg F . Perfusion-related parameters in intravoxel incoherent motion MR imaging compared with CBV and CBF measured by dynamic susceptibility-contrast MR technique. Acta Radiol. 2001; 42(2):123-8. View