A radio-isotope study of the healing of mandibular bone grafts in patients

Frame, J.W.; Edmondson, H.D.; Okane, M.

doi:10.1016/0007-117x(83)90016-1

Cited by 13 publications

(2 citation statements)

References 13 publications

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“…Single-photon emission tomography (SPET) has been proposed to be superior to planar imaging [6,7]. Most investigations of scintigraphic results in the evaluation of mandibular bone grafts consider either revascularized [1-3, 8, 9] or non-revascularized [10][11][12] grafts. In the present study clinical and scintigraphic results in revascularized as well as non-revascularized mandibular bone grafts were analysed retrospectively.…”

Section: Introductionmentioning

confidence: 99%

Bone scintigraphy in the evaluation of bone grafts used for mandibular reconstruction

et al. 1994

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Bone scintigraphy was applied in the follow-up of 24 patients who received bone grafts for reconstruction of the mandible after partial resection. Semiquantitative assessment of the grafts was done with a six-grade scoring system, based on comparison of tracer uptake in the graft and in the calvarium (as an internal control). Sixty-nine bone scans were evaluated. Late planar imaging was carried out in all cases, and single-photon emission tomography (SPET) was performed additionally in 34 of these cases. Complications were observed in four grafts. They occurred less frequently in revascularized grafts than in non-revascularized grafts. Planar scintigrams performed within 14 days after reconstruction showed a significantly higher tracer uptake in grafts with an uncomplicated further course than in those which developed complications. Follow-up scintigrams after 1 and 3 months revealed a significant increase in tracer uptake in grafts with an uncomplicated course. This was not apparent in grafts which developed complications. The tracer uptake was estimated to be higher on the basis of the SPET scans as compared with the planar scintigrams. It is concluded that bone scintigraphy is of prognostic value in the evaluation of bone grafts used for mandibular reconstruction. SPET seems to be more sensitive than planar imaging for the assessment of graft viability.

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Section: Introductionmentioning

confidence: 99%

Bone scintigraphy in the evaluation of bone grafts used for mandibular reconstruction

et al. 1994

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“…Diese physiologischen Parameter sind von entscheidender Bedeutung für die Knochenheilung im Bereich von Frakturen, Knochentransplantaten und enossalen Implantaten (21,39). Dem-entsprechend wurde die Skelettszintigraphie auch klinisch eingesetzt zur Untersuchung der Frakturheilung (13,23,24,34), der Einheilung von Knochentransplantaten (3,10,27) und der ossären Integration von Implantaten (5,25,37).…”

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Knochen-SPECT des Kiefers nach Fraktur, Auflagerungsosteoplastik oder Implantatinsertion

Berding¹,

Schliephake²,

Neumann³

et al. 1996

Nuklearmedizin

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Zusammenfassung Ziel: Ziel der vorliegenden Studie war es, unkomplizierte und komplizierte Heilungsprozesse im Kieferbereich frühzeitig mit Knochen-SPECT zu unterscheiden. Methoden: Untersucht wurden 40 Unterkieferfrakturen und 26 Kiefer nach Auflagerungsosteoplastik sowie sekundärer Implantatinsertion. Knochen-SPECT-Studien erfolgten innerhalb von 1-2 Monaten und nach etwa 4-5 Monaten. Der Uptake im Kiefer wurde durch ROI-Analysen semiquantifiziert. Ergebnisse: Frakturen mit unkomplizierter Heilung zeigten im Verlauf eine Abnahme, Frakturen mit später auftretender Infektion eine Zunahme des Uptakes, der bei letzteren dann in der Verlaufsuntersuchung signifikant höher lag. 1-2 Monate nach Auflagerungsosteoplastik fand sich in Kieferregionen, in denen später eine Sequestrierung auftrat, ein signifikant verminderter Uptake. In Regionen mit späterer Implantatlockerung war der Uptake initial signifikant vermindert und in der Verlaufsuntersuchung signifikant erhöht. Schlußfolgerung: Die vorliegenden Ergebnisse sprechen für eine prognostische Bedeutung der Knochen-SPECT bei der Beurteilung von Heilungsprozessen im Kieferbereich.

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Utility of Emission Tomography in Evaluation of Mandibular Bone Grafts

Fig

Shulkin

Sullivan

et al. 1990

Archives of Otolaryngology - Head and Neck Surgery

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Bone scanning, performed within 1 week postoperatively, is valuable in predicting the survival of revascularized composite flap grafts. Conventional planar scintigraphy is limited by a two-dimensional representation of three-dimensional structures. Single photon emission computed tomography (SPECT) is a technique in which a gamma camera rotates around the patient, acquires multiple projections, and with the aid of a computer, reconstructs three-dimensional representations. We wished to evaluate the potential advantages of SPECT in the assessment of mandibular graft viability and to compare it with planar scanning. These noninvasive methods of assessing the vascular supply are critical to patient management in the early postoperative period because the presence of or inability to exclude vascular compromise commands surgical exploration of the anastomosis for graft salvage. Fifteen patients who underwent mandibular reconstruction with revascularized free grafts were studied by both planar and SPECT scintigraphy. Long-term follow-up data were correlated with the outcome predicted by the scanning.

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A radio-isotope study of the healing of mandibular bone grafts in patients

Cited by 13 publications

References 13 publications

Bone scintigraphy in the evaluation of bone grafts used for mandibular reconstruction

Bone scintigraphy in the evaluation of bone grafts used for mandibular reconstruction

Knochen-SPECT des Kiefers nach Fraktur, Auflagerungsosteoplastik oder Implantatinsertion

Utility of Emission Tomography in Evaluation of Mandibular Bone Grafts

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