This book discusses the definition of the Radon transform, it's properties, it's relation to other transforms (Fourier, et al.), it's inverse, and so on. It is well documented. (It even contains a translation of Radon's original 1917 paper!)This book is the most useful source of such information I've found, so far. I judge it to be a bit challenging to advanced undergraduate students in mathematics and engineering. Graduate students should be able to handle it and may also feel that it extends them.Four stars instead of five because some of the proofs reference papers apart from the book. It could be more readable, but it is quite good as it is.I recommend it.