Bone marrow segmentation in leukemia using diffusion and T (2) weighted echo planar magnetic resonance imaging. Academic Article uri icon

Overview

MeSH

  • Adult
  • Aged
  • Diffusion
  • Female
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged

MeSH Major

  • Bone Marrow
  • Leukemia

abstract

  • Magnetic resonance images of leukemic bone marrow were acquired over large regions of the pelvis and lower abdomen with minimal interference from overlying tissues using diffusion and T(2) weighted echo planar imaging. Data acquisition times were on the order of 1 min for scanning volumes of up to 25 l at a spatial resolution of 31 microl. A survey of 21 patients with leukemia and eight healthy adult volunteers was undertaken to determine the magnitude of the observed effect and its dependence upon specific pathologies. The acquisition methods yielded high-quality segmentation of leukemic bone marrow prior to therapy in seven of seven patients with acute lymphocytic leukemia, chronic lymphocytic leukemia or chronic myelogenous leukemia, and who had hypercellular (>95%) bone marrow at the time of the study. The quality of the segmentation was sufficient to allow the use of maximum intensity projection images which afforded a convenient evaluation of both intra- and extramedullary disease. The measured signal-to-noise ratios agreed with a theoretical estimate that accounted for the percentage cellularity, T(2) relaxation time of water, and self-diffusion coefficient of water in iliac bone marrow. In addition, the mean signal-to-noise ratios from iliac marrow were strongly dependent upon the time after the initiation of chemotherapeutic regimens, implying that the methods may be useful for therapeutic monitoring. Copyright 2000 John Wiley & Sons, Ltd.

publication date

  • October 2000

has subject area

  • Adult
  • Aged
  • Bone Marrow
  • Diffusion
  • Female
  • Humans
  • Leukemia
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged

Research

keywords

  • Journal Article

Identity

Language

  • eng

PubMed ID

  • 11002312

Additional Document Info

start page

  • 321

end page

  • 328

volume

  • 13

number

  • 6