# IN-VIVO VERTEBRAL BONE ARCHITECTURE IN OSTEOPOROSIS

> **NIH NIH R01** · HENRY FORD HOSPITAL · 1989 · $151,629

## Abstract

We have recently developed x-ray computed tomography methods
to accurately measure the regional bone mineral density (rBMD)
within small volumes (.004cc) of individual vertebra and produce
detailed (n = 655,360), three dimensional mappings of vertebral
rBMD for human submects.  Compared to previous computed
tomography methods, which assay the bone mineral density within
single large volumes, the regional method produces a complete
description of the spatial distribution of bone material in a
vertebra.  Our preliminary results indicate that vertebral
cancellous bone is distributed with varied, non-uniform patterns
within the vertebral body.

The objective of the proposed research is to characterize in-vivo
vertebral bone architecture based on measured rBMD and
evaluate the hypothesis that changes in bone architecture
associated with metabolic bone disease are of importance in the
pathogenesis of vertebral fractures.  Specifically we wish to
improve our ability to characterize measured rBMD data,
evaluate the vertebral rBMD characteristics of asymptomatic
volunteers and subjects with minimal osteoporotic disease,
establish whether vertebral bone loss occurs with regional
variations, and measure the relationship between rBMD and the
mechanical properties of in-vivo specimens.

Overall, the proposed research involves measurements of
vertebral rBMD on 800 new in-vivo vertebrae (data has already
been acquired on 200) and 336 measurements on in-vitro
specimens.  The bone architecture of each vertebra will be
described by 31 parameters computed from the detailed, three
dimensional mapping of rBMD.

## Key facts

- **NIH application ID:** 3158863
- **Project number:** 5R01AR038874-03
- **Recipient organization:** HENRY FORD HOSPITAL
- **Principal Investigator:** MICHAEL G. FLYNN
- **Activity code:** R01 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 1989
- **Award amount:** $151,629
- **Award type:** 5
- **Project period:** 1987-08-01 → 1991-07-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/3158863

## Citation

> US National Institutes of Health, RePORTER application 3158863, IN-VIVO VERTEBRAL BONE ARCHITECTURE IN OSTEOPOROSIS (5R01AR038874-03). Retrieved via MORVS 2026-10-25 from https://api.morvs.ai/grant/nih/3158863. Licensed CC0.

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