Dual-source dual-energy CT: dose reduction after endovascular abdominal aortic aneurysm repair.

Purpose: This study was done to evaluate the possibility of reducing the dose of ionising radiation by using dual-source dual-energy computed tomography (CT) in patients undergoing CT angiography of the aorta to search for endoleaks after endovascular aneurysm repair (EVAR).

Materials And Methods: One hundred and forty-eight patients (117 M, 31 F; mean age 75 ± 6.5) underwent 171 CT angiography scans for follow-up after EVAR.

Dual energy CT (DECT) of the liver: conventional versus virtual unenhanced images.

Objective: To compare image quality and noise of conventional unenhanced (CU) and virtual unenhanced (VU) images in patients who underwent hepatic dual energy computed tomography (DECT) and to assess potential radiation dose reduction.

Materials And Methods: Forty consecutive patients were studied. Mean CU and VU image quality and noise were analyzed by two blinded radiologists using a five-point grade scale.

Hemoperitoneum following ovarian cyst rupture: CT usefulness in the diagnosis.

Purpose: The rupture of an ovarian cyst is among the most frequent causes of hemoperitoneum in women, and especially in young women. An ultrasound (US) examination performed in emergency allows the easy detection of fluids leaking into the abdomen. It may however be difficult to establish whether this fluid is blood and identify the cyst or the signs of a cystic rupture.