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Dynamic Contrast Enhancement Patterns of Solitary Pulmonary Nodules on 3D Gradient-Recalled Echo MRI

¹ Department of Radiology, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey.
² Present address: Department of Radiology, Baskent University, Faculty of Medicine, 46 Sokak No. 11/8 Yuksel Apt, 06500, Bahcelievler, Ankara, Turkey.

View larger version (82K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1A —48-year-old man with adenocarcinoma of left lung. Dynamic contrast-enhanced 3D fast low-angle shot images (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) show peripheral enhancement with progressive heterogeneous fill-in of left apical lung cancer.

View larger version (83K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1B —48-year-old man with adenocarcinoma of left lung. Dynamic contrast-enhanced 3D fast low-angle shot images (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) show peripheral enhancement with progressive heterogeneous fill-in of left apical lung cancer.

View larger version (83K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1C —48-year-old man with adenocarcinoma of left lung. Dynamic contrast-enhanced 3D fast low-angle shot images (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) show peripheral enhancement with progressive heterogeneous fill-in of left apical lung cancer.

View larger version (82K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1D —48-year-old man with adenocarcinoma of left lung. Dynamic contrast-enhanced 3D fast low-angle shot images (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) show peripheral enhancement with progressive heterogeneous fill-in of left apical lung cancer.

View larger version (81K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1E —48-year-old man with adenocarcinoma of left lung. Dynamic contrast-enhanced 3D fast low-angle shot images (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) show peripheral enhancement with progressive heterogeneous fill-in of left apical lung cancer.

View larger version (82K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1F —48-year-old man with adenocarcinoma of left lung. Dynamic contrast-enhanced 3D fast low-angle shot images (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) show peripheral enhancement with progressive heterogeneous fill-in of left apical lung cancer.

View larger version (8K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 1G —48-year-old man with adenocarcinoma of left lung. Time–signal intensity curve obtained from periphery of lesion in A shows type A pattern (early increasing enhancement with rapid washout).

View larger version (117K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 2A —45-year-old man with adenocarcinoma of right lung. Dynamic contrast-enhanced 3D fast low-angle shot late-phase image (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) shows diffusely enhancing mass (arrows) on posterobasal segment of right lung.

View larger version (23K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 2B —45-year-old man with adenocarcinoma of right lung. Time–signal intensity curve obtained from lesion in A shows type D pattern (gradually increasing enhancement).

View larger version (79K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 3A —52-year-old woman with tuberculosis. Dynamic contrast-enhanced 3D fast low-angle shot image (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) shows rim enhancement of left apical tuberculoma (arrows).

View larger version (6K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 3B —52-year-old woman with tuberculosis. Time–signal intensity curve obtained from rim of tuberculoma in A depicts type B pattern (early increasing enhancement with early plateau at second minute).

View larger version (111K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 4A —56-year-old man with round atelectasis. Dynamic contrast-enhanced 3D fast low-angle shot image (TR/TE, 5.2/2.5; flip angle, 10°; slab thickness, 78–96 mm; slice thickness, 3 mm; matrix size, 196 x 256) shows intense homogeneous enhancement of round atelectasis lesion (arrow).

View larger version (6K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 4B —56-year-old man with round atelectasis. Time–signal intensity curve obtained from lesion in A shows type C pattern (early increasing enhancement with late plateau at fourth minute).

View larger version (11K): [in this window] [in a new window] [as a PowerPoint slide]   Fig. 5 —Algorithm for evaluation of solitary pulmonary nodules.

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