In this context, post-contrast subtraction imaging is mandatory to depict the suspicious focus of PCa because on T1-weighted subtraction images, the hyperintensity of the hematoma is effaced and the enhancing nodule is well depicted (Fig. 25).
This will be also supported by the corresponding hypointense signal in the post-contrast subtraction imaging.
c Axial T1-weighted post-contrast subtraction axial MRI image shows an irregular, intensely enhancing mass in the left breast extending to the chest wall with central areas of non-enhancement consistent with abscess formation.
This corresponds to a hyperintense area on pre-contrast T1-weighted imaging (d), which is consistent with the products from the haemoglobin degradation after biopsy, as also supported by the post-contrast subtraction imaging (e) and in the colour DCE map (f).
A frustrated father posted a subtraction problem from his second-grade son's math quiz on Facebook this week with a note to the teacher calling it ridiculous.
This post-imaging subtraction was used as the method of fat suppression, i.e., no active fat suppression was used.
b Post-embolisation digital subtraction angiography (lateral view) of the right ICA shows good patency of the foetal Pcom (red arrow) and complete obliteration of the aneurysmal sac (black arrow).
T1-weighted (a), T2-weighted (b), and T1-weighted, post-contrast with subtraction (c) axial MR images show a T1 and T2 hypointense lesion with contrast enhancement (arrow) anterior to right breast implant.
Sequences pre- and post-contrast with subtraction demonstrate the late enhancement pattern of the lesion (b, c, d) Open image in new window Fig. 5 A 30-year-old female with stiffness on the medial aspect of the right breast, with inflammatory signs and pain (a, b, c, d).
Lesions were visualised using conventional FLASH3D pre- and post-gadolinium contrast subtraction images.
