I am currently working with a single slice GE CT scanner in West Africa and wondered if it is possible to get some advice on protocols.
Our most common scans are abdomens, chests and heads/facial CT. The Coronal and Sag recons are terrible and I am not sure if this is related to the way we are scanning or simply that it is a 1slice and I am used to a 64slice.
I understand that single slice CTs are somewhat uncommon these days but any adivce you have on pitch, recons etc is greatly appreciated!!
If your system is a CTi or above the system ships with recommended
protocols for everybody area within Protocol Management. With a single
slice system the faster pitches such as 2 or 3, are generally used with
thin slices. If you are doing facial bones, temporal bones and using a
slice thickness of 1, then a pitch of 3 is acceptable. If you are doing
abdominal and chest work and using a slice thickness of 5 mm or 10 mm
then the lower pitch values of 1 and 1.5 should be used for image
quality. In some cases like extreme shortness of breath most
Radiologists would accept the helical artifact that would likely be
evident with a 10 mm thickness and a pitch of 2. This should only be
done with the Doctor's approval as there have been cases that show a lot
of softening or blurring at the periphery of the chest and abdomen that
they may feel makes diagnosing the data harder.
There are GE applications specialists working in Western and Saharan
Africa. They can be contacted through the sales representatives. These
specialists would be able to help you more knowing your exact system and
patient population. Good luck and thank you for being concerned with
your patients wellbeing and dose related matters.