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[Evaluation of lumbar vertebral bone marrow changes with MR imaging]
Y Kakitsubata1, K Nabeshima, S Kakitsubata
1Department of Radiology, Miyazaki Medical College.
Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|November 25, 1993
Summary
This study classifies vertebral bone marrow signal intensity changes in lumbar spine MR imaging into four types. These changes, often seen in older individuals and lower lumbar levels, represent a spectrum of degenerative bone marrow alterations.
Area of Science:
- Radiology
- Orthopedics
- Pathology
Context:
- Magnetic resonance (MR) imaging is crucial for evaluating the lumbar spine.
- Vertebral bone marrow signal intensity (SI) changes can indicate various conditions.
Purpose:
- To classify and characterize different types of vertebral bone marrow SI changes observed on MR imaging.
- To correlate MR imaging findings with radiographic and histological data.
Summary:
- Seven hundred nine lumbar spine MR imaging studies were reviewed.
- Marrow changes were classified into four types based on T1-weighted and T2-weighted imaging.
- Type 1: decreased T1-WI, increased T2-WI (fibrous tissue/cartilage). Type 2: increased T1-WI, isointense/increased T2-WI (fatty replacement). Type 3: decreased T1-WI, decreased T2-WI (sclerosis on radiographs). Type 4: linear increased T1-WI (fatty replacement/sclerosis).
- Types 1, 2, and 3 commonly occurred in older individuals and lower lumbar levels, suggesting degenerative changes.
Impact:
- Provides a classification system for vertebral bone marrow SI changes on MR imaging.
- Enhances understanding of degenerative bone marrow changes, differentiating between pathological and physiological processes.
- Aids in the interpretation of lumbar spine MR imaging findings.