Journals / Toraks Dergisi / 2000 / Cilt: 1 - Sayı: 1

The diagnostic value of 99Tcm-MIBI uptake in lung cancer

Akciğer kanserinde 99Tcm-MIBI tutulumunun tanı değeri

Pages
54–60
DOI
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⚡ TL;DR(Too Long; Didn't Read)

In conclusion, according to this preliminary study, we suggest that chest imaging using 99Tcm-MIBI may be a useful method for the detection of PLC and may give some clue about the size and type of the tumor.

📌 3 Key Takeaways

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Objective & Hypothesis:In order to evaluate the value of 99Tcm-MIBI uptake in the diagnosis, prediction of pathologic type, tumor stage and size, 22 cases with primary lung cancer (PLC) were enrolled to the study, in a prospective manner.
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Key Findings & Data:Anterior and posterior planar images were taken 15 minutes after injection of 555-740 MBq 99Tcm-MIBI intravenously and visual evaluation was done foremost.
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Conclusion & Impact:In conclusion, according to this preliminary study, we suggest that chest imaging using 99Tcm-MIBI may be a useful method for the detection of PLC and may give some clue about the size and type of the tumor.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Karsinom · küçük hücreli dışı akciğer · Radyofarmasötikler

Abstract

In order to evaluate the value of 99Tcm-MIBI uptake in the diagnosis, prediction of pathologic type, tumor stage and size, 22 cases with primary lung cancer (PLC) were enrolled to the study, in a prospective manner. Anterior and posterior planar images were taken 15 minutes after injection of 555-740 MBq 99Tcm-MIBI intravenously and visual evaluation was done foremost. Then region of interest (ROI) was drawn over the tumor (T) and contra-lateral normal lung area (NL) in each position and mean average counts per pixel were obtained from which 99Tcm-MIBI tumor-to-normal lung uptake (T/NL) ratios were calculated and semi-quantitative analysis were done. The sensitivity of planar 99Tcm-MIBI in detection of PLC was 95% (21/22). Mean age of these 21 cases that showed MIBI uptake was 64±7 (50-74) years and all of them were male. Mean T/NL ratio of cases who were included in semi-quantitative analysis was 1.45±0.32 (1.08-2.22). According to tumor type, T/NL of SCLC (n=5) was significantly higher than NSCLC (n=15) (1.740.44 vs 1.350.21, p<0.05). There was a good positive correlation between the tumor size and T/NL ratio (r=0.546, p<0.05). With increasing the tumor size, T/NL was increased. We could not found any relationship between the TNM stage of tumor and T/NL ratios. In conclusion, according to this preliminary study, we suggest that chest imaging using 99Tcm-MIBI may be a useful method for the detection of PLC and may give some clue about the size and type of the tumor. We think it has sufficient worth for further studies.

Özet

Teknesyum 99m hekzakis 2-metoksi izobutil izonitril (99Tcm-MIBI) tutulumunun primer akciğer kanserinde tanı duyarlılığı, tümör histolojisi, evresi ve tümör büyüklüğü ile ilişkisini belirlemek amacıyla 22 akciğer kanserli olgu prospektif bir şekilde çalışmaya alındı. Olgulara 15-20 mCi (550-740 MBq) 99Tcm-MIBI'nin IV enjeksiyonundan 15 dakika sonra, supine pozisyonda, anterior ve posterior planar görüntüleme yapıldı ve öncelikle görsel olarak değerlendirildi. Tümör kütlesinin tamamından alınan aktivite sayımları (T) karşı, taraf normal akciğer sayımlarına bölünerek (NA), planar 99Tcm-MIBI tümör tutulum oranı (T/NA) hesaplandı ve yarı-kantitatif değerlendirme yapıldı. MIBI'nin akciğer kanserini saptamadaki duyarlılığı 21/22, %95 idi. Tutulum gösteren 21 olgunun yaş ortalaması 64±7 (50-74) yıldı ve hepsi erkekti. Yarı kantitatif değerlendirmeye alınan 20 olgunun T/NA oranı ortalama 1.45±0.32 (1.08-2.22) idi. T/NA oranı küçük hücreli akciğer kanserinde (KHAK) (n=5) 1.74±0.44 iken küçük hücreli olmayan akciğer kanserinde (KHOAK) (n=15) 1.35±0.21 idi ve aradaki fark istatistiksel olarak anlamlıydı (P<0.05). Tümör çapı ile T/NA arasında pozitif korelasyon vardı; tümör çapı arttıkça 99Tcm-MIBI T/NA oranı artıyordu; korelasyon katsayısı 0.546 idi ve iyi derecede pozitif korelasyon olarak değerlendirildi. 99Tcm-MIBI T/NA oranlarının tümörün TNM evresi ile ilişkisi saptanmadı. Sonuç olarak bu ön çalışmada 99Tcm-MIBI toraks görüntülemesinin primer akciğer tümörünü ve lokal tümör büyüklüğünü saptamada ve histolojik tip tahmininde yararlı olabileceğini, ileri araştırmalara değer olduğunu düşündük.

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Cite This Article

KARLIKAYA, C., YÜKSEL, M., GÜLŞEN, N., ÇERMİK, T. F. (2000). The diagnostic value of 99Tcm-MIBI uptake in lung cancer. Toraks Dergisi, Cilt: 1 - Sayı: 1, 54–60. https://ajindex.com/articles/368035

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