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thesis presentation

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Kars Hüsken

on 9 August 2016

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Transcript of thesis presentation

How to measure bone strength in living pigs and poultry?
Bone
Description of the problem
Increasing osteoporosis
Bone breakage
Bone fragments in deboned meat
Discoloration of meat

Measurements in time
Computed tomography (CT)
Photon absorptiometry (PA)
Radiography
Introduction
Content
Bone
Description of the problem
Possible measuring techniques
Dual-energy x-ray absorptiometry
Computed Tomography
Photon absorptiometry
Neutron activation
Radiography
Magnetic resonance imaging
Biochemical tests
Nuclear medicine
Ultrasound
Summary
Conclusion
Thank you for your attention
Are there any questions?
Kars Hüsken
Oldenzaal

Bachelor thesis - Animal sciences
Animal Nutrition (ANU)
dr. ir. RP (Rene) Kwakkel


dr. ir. P (Paul) Bikker
Living tissue
Bone marrow
Osteon
Exercise
Obtain information about different methods of measuring bone strength in a non-invasive way

Determine which would be the most favourable method to use
Dual-energy x-ray absorptiometry (DEXA)
Measurement of the weakening of two x-ray beams
BMD or BMC
Precise/accurate
Predict a fracture
Low radiation dose
Two-dimensional
Around $80.000
Based on x-ray beams
Three-dimensional
Separate bone structure measurements
High radiation level
Up to $300.000

Computerized axial tomography (CAT)
Volumetric quantitative CT
High-resolution CT
Peripheral quantitative CT
µCT
SPA and DPA
Special circumstances needed
Very old and submissive to DEXA
Only BMC is measured
Neutron activation
Radioactive center
Calcium
Not precise measurement
One of the oldest methods
X-ray emitter/detector
Very big difference needed
Development of method
Photodensitometry radiography
Radiogrammetry
Biochemical tests
Osteoblasts
Hydroxyapatite
Conclusion
Summary
Nuclear medicine
Radiopharmaceuticals
Gamma camera
Only suitable for licensed centers
Ultrasound
Measurement of BUA
Compact and cheap
Diverse
No radiation risk
Could also be used to measure glands, teeth or confirm pregnancy
Magnetic resonance imaging (MRI)
Differences in structure and tissue content
Resonance between nuclei
Bone marrow and cancellous bone
Superior to CT in abnormalities
Big and expensive machine
Aim of study
Full transcript