  High-energy Coulomb corrections (CCs) to some quantities of the quantum
Migdal theory of the Landau-Pomeranchuk-Migdal (LPM) effect are obtained
analytically and numerically for the regimes of small and strong LPM
suppression on the basis of a refined Moliere multiple scattering theory.
Numerical calculations are presented in the ranges of the nuclear charge number
Z of a scatterer from 6 to 92 and the expansion parameter B of Moliere from 4.5
to 8.5. It is shown that the relative CC to the spectral bremsstrahlung rate
can reach a value of the order of -19% in the ranges considered and must be
borne in mind, e.g., in the Monte-Carlo analysis of electromagnetic cascade LPM
showers in extremely high-energy region.
