• Title, Summary, Keyword: scintigraphy

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Scintigraphic Evaluation of Gastrointestinal Motility Disorders (기능성 위장관 질환에서 핵의학 검사의 역할)

  • Choe, Jae-Gol
    • The Korean Journal of Nuclear Medicine
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    • v.35 no.1
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    • pp.1-11
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    • 2001
  • Current scintigraphic tests of gastrointestinal motor function provides relevant pathophysiologic information, but their clinical utility is controversial. Many scintigraphic methods are developed to investigate gastrointestinal motility from oral cavity to colon. These are esophageal transit scintigraphy, oropharyngeal transit study, gastric emptying test, small bowel transit time measurement, colon transit study and gastroesopahgeal reflux scintigraphy. Scintigraphy of gastrointestinal tract is the most physiologic and noninvasive method to evaluate gastrointestinal motility disorders. Stomach emptying test is regarded as a gold standard in motility study. Gastrointestinal transit scintigraphy also has a certain role in assessment of drug effect to GI motility and changes alter therapy of motility disorders. Scintigraphy provides noninvasive and quantitative assessment of physiological transit throughout the gastrointestinal tract, and it is extremely useful for diagnosing gastrointestinal motor dysfunction. This article reviews the current procedures, indications, significance and guidelines for gastrointestinal motility measurements by scintigraphy.

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T1-201 and I-131 Whole Body Scintigraphy in Postoperative Well-differentiated Thyroid Cancer (분화된 갑상선암 수술후 T1-201 및 I-131 전신신티그라피 소견)

  • Hyun, In-Young;Cha, Joong-Jik;Lee, Jin-Oh;Kang, Tae-Woong;Lim, Sang-Moo;Hong, Sung-Woon
    • The Korean Journal of Nuclear Medicine
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    • v.24 no.1
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    • pp.87-92
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    • 1990
  • T1-201 and I-131 scintigraphy were performed to visualize malignant lesions postoperatively in 26 patients with well-differentiated thyroid cancer. Anyone of uptake index and retention index was higher in malignant lesions than that in benign lesions. T1-201 scintigraphy showed uptake ininflammatory tissues. T1-201 concentration was observed in fourteen patients and six of them had malignant lesions, while I-131 concentration was observed in six patients and all had malignant lesions. In sensitivity, combination of T1-201 and I-131 scintigraphy is higher than I-131 or T1-201 scintigraphy only. In postoperative patients with well-differentiated thyroid cancer, it may be useful that T1-201 scintigraphy will be performed simultaneously with I-131 scintigraphy for detecting recurrence.

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A Case of Muscular Sarcoidosis diagnosed by Gallium-67 Scintigraphy and Magnetic Resonance Imaging (갈륨 신티그라피와 자기공명영상으로 진단한 근육 유육종증)

  • Sohn, Hyung-Sun;Kim, Euy-Neyng
    • The Korean Journal of Nuclear Medicine
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    • v.33 no.6
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    • pp.543-547
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    • 1999
  • Gallium-67 scintigraphy is helpful in the assessment of active extrapulmonary sarcoidosis. Muscular involvement of sarcoidosis is often asymptomatic or nonspecific, and laboratory examinations do not provide convincing evidence of muscular involvement We report a case of muscular sarcoidosis, which was detected by gallium-67 scintigraphy. In a patient who was suffering from fever and arthralgia of knee joint, gallium-67 scintigraphy showed mediastinal and hilar involvement of sarcoidosis with unexpected extensive muscular uptake. Magenetic resonance imaging revealed the detailed depiction of intramuscular infiltration of sarcoid granuloma. Gallium-67 scintigraphy is useful in detecting inflammatory muscular involvement of sarcoidosis as well as other multiorgan involvement.

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Diagnostic Value of $^{99m}Tc-DISIDA$ Hepatobiliary Scintigraphy in Patients with Acute or Intermittent Common Bile Duct Obstruction (급성 및 간헐성 총담관폐쇄에서의 $^{99m}Tc-DISIDA$간담도 스캔의 진단적 가치)

  • Moon, Dae-Hyuk;Lee, Myung-Hae;Kim, Myung-Hwan;Lee, Young-Sang;Min, Young-Il
    • The Korean Journal of Nuclear Medicine
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    • v.24 no.2
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    • pp.254-259
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    • 1990
  • We examined patients with suspected acute or intermittent biliary obstruction using hepatobiliary scintigraphy, ultrasonography and contrast cholangiography. Of 16 patients with confirmed common bile duct obstruction, sonography and scintigraphy disagreed in 8(50%). Scintigraphy revealed partial or complete common bile duct obstruction in 13 patients (81.3%) and 6 of them had no evidence of dilated biliary trees. It is concluded that disagreement between sonography and scintigraphy is not rare in patients with acute or intermittent biliary obstruction and hepatobiliary scintigraphy is useful in diagnosing obstruction prior to ductal dilatation.

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$^{99m}Tc$-HDP Bone Scintigraphy Finding of Metastatic Renal Cell Carcinoma Bone Lesion Changed from Hot to Cold Lesion: Comparing with $^{18}F$-FDG PET/CT ($^{99m}Tc$-HDP 뼈스캔의 열소에서 냉소로 변한 신세포암 뼈전이 소견: $^{18}F$-FDG PET/CT와의 비교)

  • Seo, Young-Duk;Kim, Seong-Min;Kim, Kun-Ho
    • Nuclear Medicine and Molecular Imaging
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    • v.43 no.6
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    • pp.588-591
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    • 2009
  • A 26-year-old man with renal cell carcinoma underwent $^{99m}Tc$-HDP bone scintigraphy for detecting bony metastasis after left total nephrectomy for renal cell carcinoma. $^{99m}Tc$-HDP bone scintigraphy showed small hot lesion in the first lumbar spine. About 12 months later, he underwent spinal MRI for lower back pain. A large mass was seen around spinous process of the first lumbar spine (L1) on spinal MRI and confirmed as metastatic renal cell carcinoma by bone biopsy. $^{99m}Tc$-HDP bone scintigraphy and $^{18}F$-FDG PET/CT were underwent for further evaluation. $^{99m}Tc$-HDP bone scintigraphy showed cold lesion in the first lumbar spine which was initially hot and newly developed hot lesion in the twelfth thoracic spine, and which were shown as hypermetabolic lesions in $^{18}F$-FDG PET/CT. We report a case of bony metastasis from renal cell carcinoma which is changed from hot lesion to cold lesion in $^{99m}Tc$-HDP bone scintigraphy and compare with $^{18}F$-FDG PET/CT.

Comparison of I-131 Scintigraphy, T1-201 Scintigraphy, and Serum Thyroglobulin in the Postoperative Follow-Up of Differentiated Thyroid Cancer (분화된 갑상선암의 수술후 경과관찰에서 I-131 스캔, T1-201 스캔 및 혈청 갑상선 글로불린 농도의 비교)

  • Lee, Hyun-Kyung;Song, Jae-Soon;Shinn, Joon-Jae;You, Kye-Hwa;Cha, Wang-Ki;Kim, Eun-Sil;Kim, Chong-Soon
    • The Korean Journal of Nuclear Medicine
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    • v.31 no.3
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    • pp.346-355
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    • 1997
  • To evaluate the utility of I-131, T1-201 scintigraphy, and serum thyroglobulin(Tg) in the follow-up of differentiated thyroid cancer, we compared retrospectively the data from 33 patients who underwent total or subtotal thyroidectomy. I-131 scintigraphy was performed after optimal endogenous TSH stimulation ($TSH>50{\mu}U/ml$). Total 41 cases of I-131 and T1-201 scintigraphy pairs were examined. Concomitant serum thyroglobulin levels were measured for 41 pairs of scan. Tg-off levels(that measured after discontinuation of the thyroid hormone) higher than 40ng/m1 were considered positive, and Tg-on levels(that measured during the thyroid hormone replacement) higher than 5ng/ml were considered positive. The concordance rates between I-131 therapeutic scintigraphy and T1-201 scintigraphy was 48% in the 38 case of total scan pairs(59% in the 17 cases of postoperative preablation group, and 38% in the 21 cases of postoperative postablation group). Of 17 studies before the I-131 ablation therapy(preablation group), 7 showed positive I-131 therapeutic scintigraphy despite of negative T1-201 scintigraphy. Among patients with negative I-131 therapeutic scintigraphy, no patients had abnormal T1-201 uptake. However, of 21 studies which were done after radioiodine therapy(postablation group) 6 had abnormal uptake on T1-201 scintigraphy which were not seen on I-131 therapeutic scintigraphy, and Tg-off levels also elevated in this 4 of 6 cases. As a result, I-131 therapeutic scintigraphy showed highest positive rate at postoperative preablation follow-up study in differentiated thyroid cancer patients. T1-201 scintigraphy may be useful in postablation studies, and the use of the combined modalities(T1-201 and Tg levels) provides a higher diagnostic yield.

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Diagnostic Value of 18F-FDG PET/CT in Comparison to Bone Scintigraphy, CT and 18F-FDG PET for the Detection of Bone Metastasis

  • Liu, Ning-Bo;Zhu, Lei;Li, Ming-Huan;Sun, Xiao-Rong;Hu, Man;Huo, Zong-Wei;Xu, Wen-Gui;Yu, Jin-Ming
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.6
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    • pp.3647-3652
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    • 2013
  • Purpose: To evaluate the diagnostic value of $^{18}F$-FDG PET/CT for detection of bone metastasis in comparison with the efficacies of $^{18}F$-FDG PET/CT, CT, $^{18}F$-FDG PET and conventional planar bone scintigraphy in a series of cancer patients. Methods: Five hundred and thirty patients who underwent both $^{18}F$-FDG PET/CT and bone scintigraphy within 1 month were retrospectively analyzed. The skeletal system was classified into 10 anatomic segments and interpreted blindly and separately. For each modality, the sensitivity, specificity, accuracy, PPV and NPV were calculated and the results were statistically analyzed. Results: Bone metastases were confirmed in 117 patients with 459 positive segments. On patient-based analysis, the sensitivity, specificity, accuracy, PPV and NPV of $^{18}F$-FDG PET/CT were significantly higher than bone scintigraphy, CT and $^{18}F$-FDG PET (P<0.05). On segment-based analysis, the sensitivity of CT, bone scintigraphy, $^{18}F$-FDG PET and $^{18}F$-FDG PET/CT were 70.4%, 89.5%, 89.1% and 97.8%, respectively (P<0.05, compared with $^{18}F$-FDG PET/CT). The overall specificity and accuracy of the four modalities were 89.1%, 91.8%, 90.3%, 98.2% and 90.3%, 90.9%, 89.8%, 98.0%, respectively (P<0.05, compared with $^{18}F$-FDG PET/CT). The PPV and NPV were 89.8%, 87.6%, 85.6%, 97.2% and 85.6%, 93.2%, 92.8%, 98.6%, respectively. Three hundred and twelve lesions or segments were presented as lytic or sclerotic changes on CT images at the corresponding sites of increased $^{18}F$-FDG uptake. In lytic or mixed lesions, the sensitivity of $^{18}F$-FDG PET/CT and $^{18}F$-FDG PET were better than bone scintigraphy, while in osteoblastic lesions bone scintigraphy had a similar performance with $^{18}F$-FDG PET/CT but better than $^{18}F$-FDG PET alone. Conclusion: Our data allow the conclusion that $^{18}F$-FDG PET/CT is superior to planar bone scintigraphy, CT or $^{18}F$-FDG PET in detecting bone metastasis. $^{18}F$-FDG PET/CT may enhance our diagnosis of tumor bone metastasis and provide more information for cancer treatment.

Cerebral Infarction Mimicking Skeletal Metastases on Tc-99m MDP Bone Scintigraphy

  • Lim, Seok-Tae;Park, Soon-Ah;Sohn, Myung-Hee;Yim, Chang-Yeol
    • The Korean Journal of Nuclear Medicine
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    • v.34 no.5
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    • pp.433-435
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    • 2000
  • A 6000-year-old male with carcinoma of the prostate and cerebral infarction underwent a Tc-99m MDP bone scintigraphy for the evaluation of skeletal metastases. Bone scintigraphy (Fig. 1) showed multiple areas of increased uptake of Tc-99m MDP in the skull, spine, and ribs representing skeletal metastases. Two different patterns of uptake occurred in the skull region (Fig. 1A-C); one represents bony metastasis and the ether represents cerebral infarction. The shape, size, location, intensity, and border of the increased uptake differed between the two lesions. An oval-shaped pattern with smaller size, greater intensity and more sharply defined border in the frontal region was consistent with bony metastasis. A rectangular-shaped pattern with larger size, lesser intensity and relatively indistinct border in the temporo-parieto-occipital region was consistent with cerebral infarction. Increased uptake of bone-seeking radiotracers in cerebral infarction has been reported previously.$^{1-4)}$ A suggested mechanism by which bone-seeking radiotracers accumulate in the necrotizing cerebral tissue is an alteration of the blood-brain barrier induced during cerebral infarction, which results in entry of the radiotracers into the extracellular space of the brain.$^{4)}$ Brain CT (Fig. 2) performed 7 days before and one month after the bone scintigraphy revealed lesions on the right temporo-parieto-occipital region consistent with acute hemorrhagic and chronic cerebral infarction, respectively.

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Three Cases of Sarcoidosis Evaluated by $^{67}Ga$ Scintigraphy ($^{67}Ga$ 스캔으로 관찰된 유육종증)

  • Yi, Gang-Wook;Koh, Eun-Mi;Chung, June-Key;Lee, Myung-Chul;Shim, Young-Soo;Koh, Chang-Soon
    • The Korean Journal of Nuclear Medicine
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    • v.22 no.1
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    • pp.93-98
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    • 1988
  • $^{67}Ga$ scintigraphy has been used in the evaluation of sarcoidosis, particularly for delineating sites of involvement and grading activity. Three patients admitted in SNUH between Jan. 1986 and Jun. 1987 were diagnosed as sarcoidosis after clinical examination and $^{67}Ga$ scintigraphy. $^{67}Ga$ scintigraphy disclosed increased uptake of radioactivity in both hilar region, mediastinum, both lacrimal glands and parotid glands prior to treatment. In one case after prednisolon therapy, there was definit improvement of clinical findings and $^{67}Ga$ scintigraphy was normalized.

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Clinical Application of $^{99m}Tc-DISIDA$ Scintigraphy with Nonvisualization of Biliary Excretion (담도계로 배설되지 않는 $^{99m}Tc-DISIDA$ 신티그램의 임상적 응용)

  • Moon, Tae-Yong;Kim, Yong-Ki;Kim, Dong-Soo
    • The Korean Journal of Nuclear Medicine
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    • v.21 no.1
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    • pp.25-32
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    • 1987
  • Authors analysed biochemical studies and scintigraphic findings of obstructive jaundice and nonobstructive jaundice in 44 cases of $^{99m}Tc-DISIDA$ scintigraphy with nonvisualization of biliary excretion till 120 min or 240 min after injection of $^{99m}Tc-DISIDA$. Causative diseases of $^{99m}Tc-DISIDA$ scintigraphy with nonvisualization of biliary excretion were in order to choledocholithiasis (25%), hepatitis (25%), cholangiocarcinoma (14%), cholangitis (14%) and pancreas head tumor (11%). In obstructive jaundice, statistically significant findings were elevated alkaline phosphatase above 300 IU/L on biochemical study and single lobe enlargement of the liver, irregular radioisotope uptake of the liver and concave indentation of the gall bladder fossa of the liver on scintigraphy. In nonobstructive jaundice, statistically significant findings were persistent renal excretion of $^{99m}Tc-DISIDA$ and more increased uptake density of the heart than the liver on scintigraphy.

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