double frac = curDetPos - detPosFloor; // fraction distance from det
if (iDetPos > 0 && iDetPos < nDet - 1)
*pImCol++ += filteredProj[iDetPos] + (frac * (filteredProj[iDetPos+1] - filteredProj[iDetPos]));
double frac = curDetPos - detPosFloor; // fraction distance from det
if (iDetPos > 0 && iDetPos < nDet - 1)
*pImCol++ += filteredProj[iDetPos] + (frac * (filteredProj[iDetPos+1] - filteredProj[iDetPos]));