Nuclear medicine serving prostheses and biomaterials

Bordenave, Laurence

doi:10.1016/j.rbmret.2005.04.010

Cited by 2 publications

(1 citation statement)

References 45 publications

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“…Based on bone scan imaging the HA fibrovascularization is more rapid than porous polyethylene implants [ 41 ]. Nuclear medicine studies have great potential in future implant and biomaterial evaluation [ 42 ]. A single-photon emission computed tomography (SPECT) study showed that increasing pore size of the implant was associated with a higher rate vascular penetration while the amount of fibrotic tissue was decreased.…”

Section: Discussionmentioning

confidence: 99%

Porous Hydroxyapatite and Aluminium-Oxide Ceramic Orbital Implant Evaluation Using CBCT Scanning: A Method forIn VivoPorous Structure Evaluation and Monitoring

Lukáts

Bujtár

Sándor

et al. 2012

International Journal of Biomaterials

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Objective. This study aimed to define CBCT as a technique for postimplantation in vivo examination of porous hydroxyapatite and aluminium-oxide orbital implant shape, volume and density changes. Methods and Materials. CBCT was used to evaluate 30 enucleated patients treated with spherical polyglactin 910 wrapped hydroxyapatite and aluminum-oxide orbital implants. The mean duration of patient followup was 3.2 years or 1338 days with a range of 0.2 to 7.2 years or 79 to 2636 days in a population with an average age of 40.8 years. Results. The resolution of currently clinically used CBCT equipment allowed detailed structural observation of the orbital hydroxyapatite implants with some modifications. Volume and shape estimations were possible while density evaluation was more complicated compared to medical source computed tomography. The mean densities of the orbital implants were followed and a consistent gradual decrease identified from the beginning of implantation which was better defined after the applied correction procedure. Conclusion. CBCT with lower dosages of radiation exposure can be used to follow changes in implanted high-density porous structures. The density evaluation is possible with calibration modifications. Changes in orbital implant densities identified in this study may correspond to healing and maturation of soft tissues surrounding and penetrating the implants.

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Section: Discussionmentioning

confidence: 99%