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Low-dose gated chest exams on the iCT

White Paper
Philips CT Marketing Philips Healthcare


ECG-synchronized acquisition of the aortic root, thoracic aorta and complete chest is required to eliminate cardiac motion when evaluating thoracic aorta and triple rule-out exams. The large FOV (more than 250 mm) typically used for these types of exams requires increased overlap between steps. This makes it challenging for a 4 cm Z-axis coverage system to complete acquisition within a reasonable breath-hold, limiting the use of low-dose triple rule-out exams.


The iCT breakthrough technology has a rotation speed of 0.27 seconds and extended Z-axis coverage of 8 cm. This enables gated chest exams and 30 cm acquisitions at a FOV of 500 mm using the prospective gating Step & Shoot technique.


The Step & Shoot mode on the iCT allows for ECG-gated motion-free acquisition of a complete chest or thoracic aorta, with a breath-hold of 8 to 10 seconds and with an extremely low radiation dose of 6 to 8 mSv.

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Jan 8, 2010

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White Paper
abdomen, aorta, Body, Cardiac, chest, chest CTA, ECG-gated chest, gated chest, low dose, Step & Shoot, Thorax, triple rule-out, Vascular, z-axis

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