CT angiography of various superficial femoral artery stents: an in vitro phantom study.

Purpose: To evaluate CT reconstruction parameters to improve stent lumen visualization in vitro.

Material And Methods: 12 latest superficial femoral artery (SFA) stents were placed in a vessel phantom (diameter 4.7 mm, intravascular attenuation 250 HU, extravascular density 50 HU).

Estimation of radiation exposure of retrospective gated and prospective triggered 128-slice triple-rule-out CT angiography.

Background: CT has become an important role in the differential diagnosis of acute chest pain to exclude an aortic dissection, pulmonary embolism and acute coronary artery syndrome. However, the additional radiation exposure is a cause of concern and dose saving strategies should be applied, if possible.

Purpose: To estimate effective dose of retrospective gated and prospective ECG-triggered triple-rule-out computed tomography angiography (TRO-CTA).

Estimation of radiation exposure of different dose saving techniques in 128-slice computed tomography coronary angiography.

Purpose: To estimate the effective dose of cardiac CT with different dose saving strategies dependent on varying heart rates.

Materials And Methods: For dose measurements, an Alderson-Rando-phantom equipped with thermoluminescent dosimeters was used. The effective dose was calculated according to ICRP 103.