There is clear motivation for increasing the accessibility of MRI, particularly for brain imaging. To address this, we present a portable tight-fitting MRI scanner with a geometry that is optimized for head. We use a 35kg “Halbach-bulb” permanent magnet design that combines a Halbach sphere and Halbach cylinder. The gradient coils are designed on the outer surface of the magnet, enabling a closer-fit B0 magnet. The inhomogeneous B0 magnet results image distortion, which we correct using a generalized reconstruction algorithm that employs measured field maps. We present the full scanner system and in vivo 3D images with resolution 1.5mmx2.7mmx7mm.