Yi Xiang
Wang1, M Deng1, H T. Ma2,3, Y F. Zhang4,
J F. Griffith1, T C. Kwok4, A T. Ahuja1
1Department of Diagnostic Radiology and
Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital,
Shatin, NT, Hong Kong; 2Jockey Club Centre for Osteoporosis Care
and Control, The Chinese University of Hong Kong, Prince of Wales Hospital; 3Department
of Electronic and Information Engineering, Harbin Institute of Technology
Shenzhen Graduate School, Shenzhen, China; 4Department of Medicine
and Therapeutics, The Chinese University of Hong Kong, Prince of Wales
Hospital
Clinical
studies have shown femoral head has a poorer blood supply compared to femoral
neck and femoral shaft. It has been suggested that delayed wash-out in DCE
MRI suggests tissue blood stasis or outflow obstruction. In this study, the DCE MRI wash-out
characteristics in femoral head of normal rats were investigated, and
comparison was made to those of proximal and distal femoral diaphysis, distal
femoral epiphysis, proximal tibial epiphysis, proximal tibial diaphysis.
After the initial fast wash-in phase, for femoral head a continuous further
slow wash-in was observed, while other sites showed a wash-in phase followed
by a wash-out phase.