Clinical Usefulness of Thallium-201 chloride Scintigraphy for Evaluation of Oral Malignant Tumors-Relationship between Retention Index, Histological Type and Tumor Involvement.
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Accession number;99A1045598
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| Title;Clinical Usefulness of Thallium-201 chloride Scintigraphy for Evaluation of Oral Malignant Tumors-Relationship between Retention Index, Histological Type and Tumor Involvement. |
| Author;
SATO TSUYOSHI
(Kagoshima Univ., Dent. Sch.)
NAGAI KOYU
(Kagoshima Univ., Dent. Sch.)
MORITA YASUHIKO
(Kagoshima Univ., Dent. Sch.)
INDO HIROKO
(Kagoshima Univ., Dent. Sch.)
KAWANO KAZUNORI
(Kagoshima Univ., Dent. Sch.)
NOIKURA TAKENORI
(Kagoshima Univ., Dent. Sch.)
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Journal Title;Dental Radiology
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Journal Code:Z0608B
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ISSN:0389-9705
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VOL.39;NO.3;PAGE.147-158(1999)
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| Figure&Table&Reference;FIG.9, TBL.4, REF.36 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In this report we assessed retrospectively the usefulness of Thallium-201 chloride scintigraphy for diagnosing malignant tumors of the maxillofacial region. Thallium-201 chloride scintigraphy was performed on 74 patients with malignant tumors and 8 patients with benign tumors, and a retention index was calculated from the early and delayed scintigrams(delayed accumulation ratio/early accumulation ratio). This retention index dependeds on the blood flow of tumors and the affinity of tumors with Thallium-201 chloride. The retention index was large for malignant tumors(avg.:1.05) and small for benign tumors(avg.:0.78). Concerning the degree of malignancy(the histological type and the degree of tumor involvement), the retention index was higher in highly malignant tumors(1.20 for poorly-differentiated tumors and 1.19 for aggressive-involvement-type tumors) and lower for tumors of low malignancy(1.02 for well-differentiated tumors and 0.98 for low involvement-type tumors). Thus, our results indicated that the retention index of Thallium-201 chloride is useful for the qualitative diagnosis of malignant tumors. (author abst.) |
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