• Title/Summary/Keyword: scintigraphy

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Thyroid Carcinoma Presenting as Hot nodule on Technetium-99m Pertechnetate Thyroid Scintigraphy (Technetium-99m Pertechnetate 갑상선 스캔에서 열결절로 나타난 갑상선암)

  • Shong, Young-Kee;Lee, Mun-Ho;Ryu, Jin-Sook;Moon, Dae-Hyuk;Lee, Myung-Hae
    • The Korean Journal of Nuclear Medicine
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    • v.26 no.1
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    • pp.147-150
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    • 1992
  • In general, hot nodules on techetium scan are regarded as benign tumors, and usually no further work up for malignancy is indicated, if they are truly autonomous. The authors experienced two cases of thyroid carcinoma presenting as hot nodule on technetium-99m pertechnetate thyroid scintigraphy. One case with papillary carcinoma, and other case with follicular carcinoma are presented in addition to a review of the literature.

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Evaluation of Fracture Healing in Canine Radius by Bone Scan with $^ {99m}Tc-MDP$ ($^ {99m}Tc-MDP$를 이용한 개의 요골 골절 치유 과정의 평가)

  • 김남수
    • Journal of Veterinary Clinics
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    • v.16 no.2
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    • pp.293-299
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    • 1999
  • Bone scintigraphy with $^{99m}Tc-methylene$ diphosphonate(MDP) performed for 20 weeks per two weeks interval respectively after fracture in seven(male 3 heads, female 4 heads) canine radius were analysed. All of bone scans performed 2 weeks to 20 weeks after fracture showed increase in generalized tracer uptake and showed localized increase in tracer uptake at the fracture site. Bone scans and ratio performed 6 weeks after fracture showed the most outstanding increase in generalized and localized tracer uptake. New bone formation had been observed from 2 weeks and they were incorporated completely on 18 weeks, they showed most activity during 6-10 weeks after fracture. It was recognized that the bone scan with $^{99m}Tc-methylene$ was quite sensitivity but low specificity on the fracture healing in canine radius.

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Assessment of Prognosis and Risk Stratification in Coronary Artery Disease (관상동맥질환의 예후 및 위험도 평가)

  • Lim, Seok-Tae
    • Nuclear Medicine and Molecular Imaging
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    • v.43 no.3
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    • pp.222-228
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    • 2009
  • Risk stratification and assessment of prognosis in patients with known or suspected CAD is of crucial important for the practice of contemporary medicine. Noninvasive testing such as myocardial perfusion scintigraphy, coronary artery calcium scoring or CT coronary angiography is increasingly being used to determine the need for aggressive medical therapy and to select patients for catheterization. The integrated anatomic and functional information may provide more additional information for the cardiologist or other clinician by the improved risk stratification and diagnostic accuracy of integrated techniques. The development of SPECT/CT or PET/CT hybrid systems is therefore of important value for the nuclear cardiology.

Protocols of Myocardial Perfusion SPECT (심장관류SPECT 검사 프로토콜)

  • Kim, Seong-Min
    • The Korean Journal of Nuclear Medicine
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    • v.39 no.2
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    • pp.82-86
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    • 2005
  • In myocardial perfusion scintigraphy, the results of this evalution now confront the practitioner of nuclear medicing with methodologic options. Most nuclear cardiologic studies are performed using thallium-201, Tc-99m sestamibi and Tc-99m tetrofosmin. Some part of these studies use some form of pharmacologic stress test. While tailoring each test to the individual is ideal, this may be impractical for a busy department. Accordingly, established protocols to be used for patients with similar clinical presentations will be helpful. The following review presents methodology of various imaging protocols mainly according to the guidelines of nuclear cardiology procedures in American Society of Nuclear Cardiology.

Acute Osteomyelitis Shown as a Cold Lesion on Bone Scan (골스캔에서 냉소로 보인 급성골수염)

  • Lee, Seok-Mo;Bae, Sang-Kyun;Cho, Myung-Rae
    • The Korean Journal of Nuclear Medicine
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    • v.34 no.6
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    • pp.516-520
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    • 2000
  • Acute osteomyelitis is usually shown as a localized area of increased activity (hot uptake) in the infectious focus on bone scintigraphy. In our patient, absence of radioactivity (cold lesion) was noted in the distal metaphyseal and diaphyseal regions of his right femur. Initial x-ray was interpreted as normal except for mild soft tissue swelling in the right thigh. The lesion was confirmed as an acute osteomyelitis with subperiosteal abscess on surgery. Staphylococcus aureus was the etiologic organism. We describe a case of acute osteomyelitis in a one-year-old boy shown as a cold lesion on bone scan.

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