Characterization of trabecular bone by dipolar demagnetizing field MRI

被引：41

作者：

Capuani, S

Curzi, F

Alessandri, FM

Maraviglia, B

Bifone, A

机构：

[1] Univ La Sapienza, Dept Phys, UdR Roma 1, INFM, I-00185 Rome, Italy

[2] Univ La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[3] Inst Canc Res, CRC, Clin Magnet Resonance Res Grp, Sutton, Surrey, England

来源：

MAGNETIC RESONANCE IN MEDICINE | 2001年 / 46卷 / 04期

关键词：

multiple spin-echo (MSE); trabecular bone; bone marrow; intertrabecular space; diffusion coefficient;

D O I：

10.1002/mrm.1246

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

A multiple spin-echo (MSE) sequence has been applied for the first time to study trabecular bone ex vivo. The second echo generated by the demagnetizing field presents discrete drops in signal intensity for certain values of the pitch of the magnetization helix created by the correlation gradient. These dips may reflect characteristic pore sizes in the trabecular bone specimens. This hypothesis is supported by similar experiments performed on a phantom with uniform pore size distribution. Trabecular bone images weighted in the MSE contrast mechanism are reported. (C) 2001 Wiley-Liss, Inc.

引用

页码：683 / 689

页数：7

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