The call 1/4 Thru (normally spoken as "Quarter Thru") is like Swing Thru except that the first arm turn is 1/4 instead of 1/2. The second arm turn is still 1/2.
Like Swing Thru, 1/4 Thru always starts with the right hand. There is also Left 1/4 Thru, which is left 1/4 followed by right 1/2.
3/4 Thru and Left 3/4 Thru are exactly the same except that the first arm turn is 3/4 instead of 1/4.