cartilage contact visualization postview colin smith

Improved and artifact-free 3-D visualization of the cartilage canals was demonstrated by QSM processing of the data, especially by utilizing susceptibility data as an enhancing mask. Combination of GRE with a mask based on QSM data further improved visualization. Thus, orientation-independent visualization and better localization of the cartilage canals was achieved with the QSM approach. The artifactual splitting of the cartilage canals that occurs due to the dipolar phase, which was present in the SWI post-processed data, was eliminated by the QSM approach. To compare the post-processing methods, minimum/maximum intensity projections and 3-D reconstructions of the processed datasets were generated and evaluated.Ĭartilage canals were successfully visualized using both SWI and QSM approaches.

Datasets were processed using the standard SWI method and truncated k-space division QSM approach. The human specimen and the stifle joint of a live, 3-week-old piglet also were scanned at 7.0 T. It is hypothesized that QSM post-processing improves visualization of the cartilage canals by resolving artifacts present in the standard SWI post-processing while retaining sensitivity to the cartilage canals.Įx vivo distal femoral specimens from 3- and 8-week-old piglets and a 1-month-old human cadaver were scanned at 9.4 T with a 3-D gradient recalled echo sequence suitable for SWI and QSM post-processing. In the present study, a quantitative susceptibility mapping (QSM) approach is evaluated for 3-D visualization of the cartilage canals. High-resolution, three-dimensional (3-D) visualization of cartilage canals has recently been demonstrated using susceptibility weighted imaging (SWI). 4 Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, United States of America.Ĭartilage canal vessels are critical to the normal function of epiphyseal (growth) cartilage and damage to these vessels is demonstrated or suspected in several important developmental orthopaedic diseases.3 Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, United States of America Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, United States of America.2 Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St.1 Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, United States of America Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, United States of America Research Group of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.

Cartilage contact visualization postview colin smith