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FIG 6. Clinical diffusion imaging in a 58-year-old patient with ischemic brain insults of different ages.
A, C, E, Anatomic details are well depicted on T2-weighted standard fast spin-echo images (4000/106/1).
B, D, F, Images show averaged signals from six single-shot scans with half-Fourier reconstruction. Diffusion-weighting (b = 1000 s/mm2, TE = 155) allows distinction between the relatively recent lesion (6 days old, with markedly restricted diffusion (CNR = 10; arrow, B), the older lesion (4 weeks old) with slight signal enhancement (CNR = 4; arrow, D), and the 1-year-old lesion without any visible diffusion abnormalities. FOV, 175 x 350 mm; matrix, 96 x 256; section thickness, 10 mm.
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