## Anniversary paper: Role of medical physicists and the AAPM in improving geometric aspects of treatment accuracy and precision.

The last 50 years have seen great advances in the accuracy of external beam radiation therapy. Geometrical uncertainties have been reduced from a centimeter or more in presimulation, skin-mark guided days to 1-2 mm in today's image-guided radiation therapy treatments. Medical physicists, with the support and guidance of the American Association of Physicists in Medicine (AAPM), have been, and continue to be, at the forefront of research, development and clinical implementation in this area. This article reviews some of the major contributions of physicists to the improvement of treatment accuracy and precision, and speculates as to what the future may bring.

DOI: 10.1118/1.2836420
Version: za2963e q8zae q8zb9 q8zca q8zd2 q8zeb q8zfc q8zg6

#### Similar articles you may find interesting…

1. The Influence of Outer Solar System Architecture on the Structure and Evolution of the Oort Cloud

arXiv:1305.5253 [astro-ph.EP] 22 May 2013

We study the influence of outer Solar System architecture on the structural Evolution of the Oort Cloud (OC) and the flux of Earth-crossing comets. In Particular, we seek to quantify the role of the giant planets as "planetary Protectors". To do so, we have run simulations in each of four different...
2. On the Dirac Monopole Mass Scale

arXiv:1305.4810 [physics.gen-ph] 21 May 2013

It is shown, by a semi-classical argument, that the Dirac charge quantization is still valid in the (classical) Born-Infeld electromagnetic theory. Then it is possible to calculate Dirac's monopole mass in the framework of this theory, which is not possible in Maxwell's theory. The existence of an...
3. Nuclear $\beta^+$/EC decays in covariant density functional theory and the impact of isoscalar proton-neutron pairing

arXiv:1305.5387 [nucl-th] 23 May 2013

Self-consistent proton-neutron quasiparticle random phase approximation based on the spherical nonlinear point-coupling relativistic Hartree-Bogoliubov theory is established and used to investigate the $\beta^+$/EC-decay half-lives of neutron-deficient Ar, Ca, Ti, Fe, Ni, Zn, Cd, and Sn isotopes. T...