No abstract available.
Adult ; Carcinoma, Hepatocellular/radiography/radionuclide imaging/ultrasonography ; Granuloma, Plasma Cell/pathology/*radiography/radionuclide imaging ; Humans ; Liver Diseases/pathology/*radiography/radionuclide imaging ; Liver Neoplasms/radiography/radionuclide imaging/ultrasonography ; Magnetic Resonance Imaging ; Male ; Tomography, X-Ray Computed

The reduction in the amount of asialoglycoprotein (ASGP) receptor, which resides exclusively on the plasma membrane of functioning mammalian hepatocytes, as a consequence of hepato-cellular damage has been demonstrated in various pathologic conditions of the liver. Galac tosylated human serum albumin (GSA) is a newly developed receptor-binding agent, specific for the ASGP receptor. Tc-99m GSA binds quantitatively to liver ASGP receptors and the rate of accumulation in the liver is dependent on hepatic function represented as the amount of receptor, as well as the amount of ligand injected, its affinity to the receptor and the hepatic blood flow. The findings of Tc-99m GSA scintigraphy were reported to reflect the hepatic function of the patients with large hepatic tumors, obstructive jauniice, acute and chronic liver disease. Tc-99m GSA scintigraphy is an easy and reliable test and has the clinical potentials to evaluate the liver function in the patients with hepatic disorders.
Asialoglycoprotein Receptor ; Cell Membrane ; Evaluation Studies as Topic* ; Hepatocytes ; Humans ; Liver Diseases ; Liver* ; Radionuclide Imaging* ; Serum Albumin*

Von Hippel-Lindau (VHL) syndrome is a rare neoplastic disorder characterized by central nervous system (CNS) and visceral tumors. We here present 68Ga-labelled [1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid]-1-Nal3-Octreotide positron emission tomography computed tomography findings in a 52 year old female with VHL syndrome, demonstrating both CNS and visceral tumors.
Brain Diseases/radionuclide imaging ; Female ; Humans ; Kidney Diseases/radionuclide imaging ; Liver Diseases/radionuclide imaging ; Middle Aged ; Multimodal Imaging/*methods ; Organometallic Compounds/diagnostic use ; Pancreatic Diseases/radionuclide imaging ; Positron-Emission Tomography/*methods ; Tomography, X-Ray Computed/*methods ; von Hippel-Lindau Disease/*radionuclide imaging

PURPOSE: Heart to liver ratio on T1-201 per rectal scintigraphy (shunt index) is known to be useful in the assessment of portal systemic shunt. We assessed T1-201 uptake pattern and early liver/heart uptake rate of T1-201 and correlated with shunt index in patients with chronic active hepatitis (CAH) and liver cirrhosis (LC). MATERIALS AND METHODS: Fifty eight patients with biopsy-proven chronic liver disease (35 with CAH, 23 with LC) underwent T1-201 per rectum scintigraphy after instillation of 18.5 MBq of T1-201 into the upper rectum. We evaluated hepatic uptake (type 1: homogeneous, 2: inhomogeneous segmental, 3: inhomogeneous nonsegmental) and extrahepatic uptake of spleen, heart and kidney (grade 0: no uptake, 1: less than liver, 2: equal to liver, 3: greater than liver). We measured the early liver/heart uptake rate (the slope of the liver to heart uptake ratio for 10 min) and shunt index (heart to liver uptake ratio). T1-201 uptake pattern and early liver/heart uptake rate of T1-201 was correlated with the pathologic diagnosis and shunt index. RESULTS: Hepatic uptake patterns of type 1 and 2 were dominant in CAH (CAH: 27/35, LC: 8/23), and type 3 in LC (CAH: 8/35, LC: 15/23) (p<0.005). The grades of extrahepatic uptake were higher in LC than in CAH (spleen: p<0.001, other soft tissue: p<0.005). The early liver/heart uptake rate of CAH (0.110+/-0.111) was significantly higher than that of LC (0.014+/-0.090) (p<0.001). The sensitivity and specificity of the early liver/heart uptake rate were 77.7% and 67.7% in differentiating LC from CAH. There was negative correlation between early liver/heart uptake rate and shunt index (r=-0.3347, p<0.01). CONCLUSION: Hepatic and extrahepatic uptake pattern and early liver/heart uptake rate on T1-201 per rectum scintigraphy are useful in the assessment of portal systemic shunt in patients with chronic liver disease.
Diagnosis ; Heart ; Hepatitis, Chronic ; Humans ; Kidney ; Liver Cirrhosis ; Liver Diseases* ; Liver* ; Portal System ; Radionuclide Imaging* ; Rectum* ; Sensitivity and Specificity ; Spleen

No abstract available.
Amyloidosis/*radionuclide imaging ; Female ; Fluorodeoxyglucose F18/*diagnostic use ; Humans ; Liver Diseases/*radionuclide imaging ; Multiple Myeloma/*complications ; *Positron-Emission Tomography and Computed Tomography ; Radiopharmaceuticals/*diagnostic use

A Tc-99m sulfur colloid hepatic scintigraphy is often the first imaging modality empolyed in the evaluation ofthe patient with suspected liver disease,since the hepatic scintigraphy is not only highly sensitive, low expenseand easy of performance but also provides both structural and functional information of the liver. The authoranlayzed the scintigraphic findings in 304 patient proven various hepatic disease and 58 normal liver, and alsoretrospectively analyzed the result of hepatic scintigraphy and ultlrasonography of the liver in 117 patients. Theresults were as follows; 1. The overall sensitivity and specificity of hepatic scintigraphy in the liver diseaseis 91% and 67%, respectively. 2. On the evaluation of the diffuse parenchymal parenchymal disease of liver, thescintigiraphy was found to be highly sensitive (88%) and also specific image patterns were found in cirrhosis. 3.The hepatic scintigraphy was highly sensitive (92%) in the detection of the focal lesions of liver. 4. Theultrasonography was capable of differentiating solid and cystic masses which were detected on scintigraphy, whilescintigraphy was more sensitive in detection of hepatocellular disease. 5. Tc-99m sulfur colloid imaging reminedthe preferred inital screening method in patients with suspected liver disease, while ultrasonography should bedone for those patients with prior suspicious findings.
Fibrosis ; Humans ; Liver Diseases ; Liver ; Mass Screening ; Methods ; Radionuclide Imaging ; Sensitivity and Specificity ; Technetium Tc 99m Sulfur Colloid ; Ultrasonography

PURPOSE:The International Labor Organization (ILO) has established an international standard for chest X-ray diagnosis of pneumoconiosis since 1980. However, there is a need for improved diagnosis and staging in occupational disease. We evaluated Ga-67 citrate scintigraphy quantitatively and correlated the scintigraphic findings with pulmonary function tests and chest X-ray result. MATERIALS AND METHODS: Twenty-five patients underwent whole body scintigraphy with additional chest and abdomen images 48 hrs after intravenous injection of 185 MBq of Ga-67 citrate. Ten normal controls were also studied. Regions of interest (ROI) were drawn on the posterior image to measure counts from the liver and lungs (Lung/Liver Ratio). RESULTS: L/L ratio according to the stages of chest X-ray classification were as follows; stage 0 (normal, n=10): 0.3948+/-0.0692, stage 1 (n=10): 0.5763+/-0.1837, stage 2 (n=11): 0.6849+/-0.1459, stage 3 (n=4): 0.9913+/-0.0712. There was a significant correlation between the scintigraphic L/L ratio and the X-ray stage (r=0.618, p<0.05). However, no significant correlation between L/L ratio and pulmonary function tests were observed (p>0.05). CONCLUSION: Quantitative Ga-67 scintigraphy can be a useful method for staging of silicosis. However, it is not a method to assess pulmonary functional impairment.
Abdomen ; Citric Acid ; Classification ; Diagnosis ; Humans ; Injections, Intravenous ; Liver ; Lung ; Occupational Diseases ; Pneumoconiosis ; Radionuclide Imaging* ; Respiratory Function Tests ; Silicosis* ; Thorax*

BACKGROUND: The disturbances of portal circulation in chronic liver disease may cause hepatic failure, hepatic encephalopathy and variceal bleeding. The measure of porto-systemic shunt plays a significant role in the management and prognosis of the patients. So we have evaluated the relationship between the shunt index of thallium-201 liver scan and the histological grade and stage of chronic liver disease. METHODS: The thallium-201 scintigraphy per rectum was evaluated in 159 patients with chronic liver disease, which were proven with percutaneous liver biopsy. We used the heart to liver activity ratio at 20 minute as shunt index, representing portal-systemic shunt. The two pathologists scored independently hepatitis activity (lobular and porto-periportal activity) and stage (fibrosis). RESULTS: A significant difference was noted between the shunt index and the scores of fibrosis (p< 0.001) although this correlation was statistically weak (r=0.26, p=0.008). In cumulative logistic regression test, the shunt index had a effect on the fibrosis (p< 0.001) but not on the lobular and porto-periportal activity. Fibrosis was predicted as less than 2 if shunt index was less than 0.24, 3 if more than 0.24 but less than 0.46, 4 if more than 0.46. CONCLUSION: The shunt index of thallium-201 liver scintigraphy correlated only with fibrosis not with lobular and porto-periportal activity. As the fibrosis progresses in chronic liver disease, portal hypertension becomes more severe and the shunt index increases. Thallium-201 liver scan may be useful for evaluation of hepatic fibrosis instead of invasive liver biopsy in predicting the histological stage (fibrosis) of advanced chronic liver disease.
Biopsy* ; Esophageal and Gastric Varices ; Fibrosis ; Heart ; Hepatic Encephalopathy ; Hepatitis ; Humans ; Hypertension, Portal ; Liver Diseases* ; Liver Failure ; Liver* ; Logistic Models ; Prognosis ; Radionuclide Imaging* ; Rectum

BACKGROUND/AIMS: [18F]FDG-PET is a functional imaging modality reflecting cellular glucose metabolism. In most malignant cells, accumulation and trapping of [18F]FDG allows the visualization of increased uptake compared with normal cells. The aim of this study was to assess the value of PET in differentiating benign from malignant hepatic lesions and to determine in which types of hepatic tumors PET can help evaluate stage, monitor response to therapy, and detect recurrence. METHODS: Eighty patients with liver lesions were enrolled (hepatocellular carcinoma 34, cholangiocarcinoma 8, metastatic liver cancer 25, hemangioma 6, liver abscess 7). Liver metastases were 22 adenocarcinoma, 2 lymphoma, 2 squamous cell carcinoma. The PET images of these patients were analyzed. SUV and lesion-to-normal liver background SUV ratio were obtained and compared among the disease groups. RESULTS: All liver metastases and all cholangiocarcinomas had increased uptake value, with SUV ratios greater than 2. Hepatocellular carcinoma had SUV ratios greater than 2 in 20 of 34 patients (59%). All hemangiomas had poor uptake, a SUV ratio of less than 2. All liver abscesses showed definite uptake. CONCLUSIONS: The PET technique using FDG static imaging was useful in differentiating malignant from benign lesions of the liver in limited situations. Limitations included false negative results in some patients with hepatocellular carcinoma. Liver abscesses raised problems in differential diagnosis from malignant liver tumors. The findings of this study suggest that the PET technique might be applied in tumor staging and the detection of recurrence, as well as monitoring responses to therapy for all adenocarcinomas and some hepatocelluar carcinomas.
Adult ; Aged ; Diagnosis, Differential ; English Abstract ; Female ; Fludeoxyglucose F 18/diagnostic use ; Human ; Liver Diseases/*radionuclide imaging ; Liver Neoplasms/radionuclide imaging ; Male ; Middle Aged ; Radiopharmaceuticals/diagnostic use ; *Tomography, Emission-Computed

We report here on a rare case of primary AL hepatic amyloidosis associated with multiple myeloma in a 64-year-old woman. The patient was referred for evaluating her progressive jaundice and right upper quadrant pain. 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/computed tomography (CT) showed diffusely and markedly increased 18F-FDG uptake in the liver. Although there have been several case studies showing positive 18F-FDG uptake in pulmonary amyloidosis, to the best of our knowledge, the 18F-FDG PET/CT findings of hepatic amyloidosis or primary hepatic amyloidosis associated with multiple myeloma have not been reported previously.
Amyloidosis/complications/pathology/*radionuclide imaging ; Biopsy, Needle ; Female ; Fluorodeoxyglucose F18/*diagnostic use ; Humans ; Liver/pathology ; Liver Diseases/complications/pathology/*radionuclide imaging ; Middle Aged ; Multiple Myeloma/*complications ; *Positron-Emission Tomography and Computed Tomography ; Radiopharmaceuticals/*diagnostic use