Improved algorithm for 3D non-contrast pulmonary MRA
Chia-Ling Chang 1 , Tzu-Cheng Chao 1,2 , Maria Alejandra Durn-Mendicuti 3 , Ming-Ting Wu 4,5 , and Bruno Madore 3
Department of Computer Science and
Information Engineering, National Cheng-Kung University,
of Medical Informatics, National Cheng-Kung University,
of Radiology, Brigham and Women's Hospital, Harvard
Medical School, Boston, Massachusetts, United States,
of Radiology, Kaohsiung Veteran General Hospital,
of Medicine, National Yang-Ming University, Taipei,
In an emergency room context, there is a need for a
reliable non-contrast enhanced pulmonary MR angiography
method to help handle the large number of patients with
suspicion for pulmonary embolism and contra-indication
for CT angiography. A promising method was previously
introduced whose main weakness might have been the
presence of discontinuities at the junction between the
several slabs used to cover the chest volume. The
present work aimed at alleviating this problem, thus
making the overall approach more generally applicable.
Through a specially-tailored registration algorithm as
well as intensity-correction strategies, such
discontinuities have been considerably suppressed here.
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