| Usefulness of 99m Tc-MDP Bone Scintigraphy for Assessing Vascular Ingrowth on Hydrox yapatite Ocular Implant. |
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Jung Hoon Kim, Woong Chul Choi, Hyung Sun Shon |
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Department of Opthalmology, St.Mary's Hospital, The Catholic University of Korea. |
| 99mTc - MDP 골신티그라피를 이용한 Hydroxyapatite 안구 보충물의 혈관 신생 평가 및 임상적 유용성 |
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최웅철(Woong Chul Choi),김정훈(Jung Hoon Kim),손형선(Hyung Sun Shon) |
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| Abstract |
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This study was to evaluate the clinical usefulness of 99m Tc-MDP bone scintigraphy for assessing vascular ingrowth into the ocular implants after enucleation and evisceration. Twenty four patients(M:F=7:17, mean age:36), with a coralline hydroxyapatite after uncomplicated enucleation or evisceration surgery were studied. Uptake ratio was also calculated by measuring the implants activity(H)and contralateral orbit activity(N). Grading score and uptake ratio were compared with clinical outcome of vascularization. Additionally, we also analyzed the vascularization status as time lapse between primary surgery and scintigraphic study and surgical methods. The degree of grade and uptake ratio were inversely correlated with vascular ingrowth. Higher than grade 2 or greater than 1.56 in H/N ratio seemed to be an indicator for better prognosis. 99m Tc-MDP bone scintigraphy can be a useful method to evaluate the vascularized status of implants. Adequate time for 99m Tc-MDP bone scintigraphy after enucleation and evisceration was 11~20 weeks. |
| Key Words:
Hydroxyapatite ocular implant;99m Tc-MDP Bone scintigraphy;Fibrovascularization of hydroxyapatite |
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