The required pitch depends on the rotation time of the gantry in relationship to the R-R interval of the patient. We need to ensure that by the time the next diastolic phase of the cardiac cycle occurs, the scanner has just reached a new area of z-axis coverage.
The faster the heart rate, the faster we need to move to arrive at the next z-axis point at the next diastole - in other words, the faster the heart rate, the faster the pitch.
You can see in the simulation above how altering pitch causes gaps or overlap in z-axis coverage. The plot in the bottom left shows the portion of the z-axis that is adequately covered for a certain cardiac phase in this case, diastole.
On the right, you can stars in the sky dating agency how the tube position is changing over time. The tube makes a very tight helix around the patient, covering many areas multiple times; but by the time the next diastolic phase occurs, the tube is exactly 1 detector width over. Again, we need degrees of coverage for each phase of the cardiac cycle in order to reconstruct CT images. Because of the low pitch, retrospective gating yields a very high radiation dose we are covering each part of the chest many times.
Keeping a kosher home, observing shabbat, raising the children Jewish will require both parents to be Jewish. I dated a non Jew for awhile; I was getting ready emotionally to break up with him when he announced his interest in converting, he did. We were married by a rabbi and have raised three Jewish children. Interestingly the children having watched some awkward interactions with my in laws have said they will only marry Jews. Stars in the sky dating agency currently a freshman in highschool and the first girl I saw and had a crush on was Jewish.
She told me we couldn't be together, basically telling me not to waste time on something that wouldn't have any future.
To this day I still have feelings for this girl, anq. I don't buy it.
A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates. All locks have three elements: A watertight chamber connecting the upper and lower canals, and large enough stars in the sky dating agency enclose one or more boats. The position of the chamber is fixed, but its water level can vary.
A lock gate schematic. A gate often a pair of ""pointing"" half-gates at either end of the chamber.