کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4244428 | 1283392 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fixation extraosseuse du radiotraceur lors de la réalisation d'une scintigraphie du squelette chez un patient atteint de bêta-thalassémie : à propos d'un cas
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کلمات کلیدی
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
رادیولوژی و تصویربرداری
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fixation extraosseuse du radiotraceur lors de la réalisation d'une scintigraphie du squelette chez un patient atteint de bêta-thalassémie : à propos d'un cas Fixation extraosseuse du radiotraceur lors de la réalisation d'une scintigraphie du squelette chez un patient atteint de bêta-thalassémie : à propos d'un cas](/preview/png/4244428.png)
چکیده انگلیسی
Red blood cell transfusion, main therapeutic modality of beta-thalassemia, leads to iron overload which may perturb several metabolic ways. The aim of this paper is to illustrate the uptake abnormalities observed on bone scan of thalassemic patients and to discuss mechanisms of extraosseous accumulation of the radiopharmaceutical in this pathology. We report a 16-year-old child suffering from beta-thalassemia major undergoing transfusion therapy. A bone scan was indicated to look for osseous infection. This study revealed a little skeletal uptake and abnormal liver, splenic and renal accumulation. A repeat bone scan, performed three weeks later showed a better skeletal uptake which enabled the discovery of focal abnormalities and made the diagnostic easier. The effect of iron overload on radiopharmaceuticals's uptake in bone scan is known since 1975. Dissociation of 99mTc from the carrier ligand due to the presence of iron excess seems the most plausible hypothesis. Free 99mTc can be bound to other tissular substrates which can explain extraosseous uptake. The normally available pool for bone is reduced and then the skeletal uptake decreased. This report limits considerably the sensitivity of the bone scan. A well-led iron chelation and eventually the use of diuretic drug may guarantee a better quality of bone scan images.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Médecine Nucléaire - Volume 33, Issue 10, October 2009, Pages 650-654
Journal: Médecine Nucléaire - Volume 33, Issue 10, October 2009, Pages 650-654
نویسندگان
M. Guezguez, M. Nouira, R. Sfar, K. Chatti, S. Zrour, M. Ben Fradj, K. Ben Ali, S. Ajmi, H. Essabbah,