Magnetic resonance relaxation times of normal tissue in the course of chemotherapy: a study in patients with bone sarcoma |
| |
Authors: | H C Holscher MD H -J van der Woude MD J Hermans PhD M A Nooy MD J Doornbos PhD J L Bloem MD |
| |
Institution: | (1) Department of Diagnostic Radiology, University Hospital Leiden, The Netherlands;(2) Department of Medical Statistics, University Hospital Leiden, The Netherlands;(3) Department of Clinical Oncology, University Hospital Leiden, The Netherlands;(4) Department of Diagnostic Radiology, Bldg. I, C2-S, University Hospital Leiden, Rijnsburgerweg 10, NL-2333 AA Leiden, The Netherlands |
| |
Abstract: | To study the effect of chemotherapy on normal fat, skeletal muscle, and bone marrow, T1 and T2 relaxation times were measured in 15 patients with bone sarcoma before and after each cycle of preoperative chemotherapy. A section plane containing the tumor and if possible the nonaffected extremity was imaged with combined multiecho spin echo and inversion recovery pulse sequences. T1 and T2 relaxation times were calculated in the normal-appearing tissues. Although some variation was found in the values in the individual patient and between patients, no systematic changes of relaxation times of fat, muscle, or bone marrow occurred in the course of treatment. We conclude that the chemotherapy used in bone sarcoma has no effect on relaxation times of normal fat, muscle, and bone marrow, and that therefore these tissues may serve as a reference for the signal intensity of tumor. |
| |
Keywords: | Bone tumor Bone neoplasm Magnetic resonance imaging Chemotherapy Relaxation time |
本文献已被 SpringerLink 等数据库收录! |
|