Hemorrhagic and proteinaceous contents may appear hyperdense on NECT.
Choroidal metastases from melanoma may appear hyperdense on NECT and hyperintense on T1W MR images.
The ablated zone is still slightly hyperdense on the water map image (arrow).
They are often associated with marked vasogenic edema and may be hyperdense on CT because of the high cellularity.
Bosniak III cysts are characterized by thick or multiple septations, mural nodule, and are hyperdense on CT.
The lesions are generally hyperdense on CT and show T1 hyperintense and T2 iso-hypointense signal on MRI with variable enhancement on post-contrast sequences (Fig. 5).
The solid portions are moderately echogenic on US and hyperdense on enhanced CT, while cystic areas are anechogenic on US and hypodense on CT.
This nodule is hyperdense on the synthesised monochromatic 40-keV images and shows iodine content on the greyscale- and colour-coded iodine maps (circles).
The thrombus, when detectable, appears as an endovascular filling defect, hyperdense on non-enhanced images and hypodense in post-contrast scans.
Attention should be paid to the presence of blood products, which will appear relatively hyperdense on non-contrast-enhanced CT images.
