Article Figures & Data
Figures
- fig 1.
51-year-old man with cerebral abscess.
A—C, T2-weighted fast spin-echo (5000/128/2/6 [TR/TE/excitations/slice thickness]) (A) and T1-weighted spin-echo without (600/14/2/6) (B) and with (C) gadolinium injection show nonspecific “ring-enhancing” mass.
D—E, Diffusion-weighted (“z” sensitising direction) multishot echo-planar sequence (D) (800/123/5/6) and corresponding ADC map (E) show central hyperintensity on diffusion-weighted image with very low ADC values (.25—.33 × 10−3 mm2/sec).
- fig 2.
70-year-old man with cerebral abscess.
A—C, T2-weighted fast spin-echo (5300/128/2/6) (A) and T1-weighted spin-echo images without (600/14/2/6) (B) and with (C) gadolinium injection show nonspecific “ring-enhancing” mass. Initial radiologic and clinical diagnosis was necrotic glioblastoma.
D—E, Diffusion-weighted (“z” sensitizing direction) multishot echo-planar image (D) (800/123/5/6) and corresponding ADC map (E) show important decrease of diffusion with very low ADC values (.21—.34 × 10−3 mm2/sec) suggesting diagnosis of abscess.
- fig 3.
60-year-old man with glioblastoma multiforme.
A—B, Using T2-weighted fast spin-echo (A)(6000/128/2/6) and enhanced T1-weighted spin-echo (B) (600/14/2/6) imaging, differential diagnosis between glioblastoma and abscess is impossible.
C—D, Diffusion-weighted (“z” sensitizing direction) multishot echo-planar images (800/123/5/6) (C) and corresponding ADC map (D) show central hypointensity on diffusion-weighted image and hyperintensity on ADC map consistent with diagnosis of tumor.
- fig 4.
57-year-old woman with cerebral metastasis.
A—B, On T2-weighted fast spin-echo (A)(6000/128/1/6) and enhanced T1-weighted spin-echo images (B) (600/14/2/6) the differential diagnosis between metastasis and abscess is impossible.
C—D, Diffusion-weighted (“z” sensitizing direction) multishot echo-planar image (800/123/5/6) (C) and corresponding ADC map (D) show central hypointensity on diffusion-weighted image and hyperintensity on ADC map consistent with diagnosis of tumor.
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