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albumin scintigraphy

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https://www.readbyqxmd.com/read/28430738/three-dimensional-fractal-analysis-of-99mtc-maa-spect-images-in-chronic-thromboembolic-pulmonary-hypertension-for-evaluation-of-response-to-balloon-pulmonary-angioplasty-association-with-pulmonary-arterial-pressure
#1
Yasuhiro Maruoka, Michinobu Nagao, Shingo Baba, Takuro Isoda, Yoshiyuki Kitamura, Yuzo Yamazaki, Koichiro Abe, Masayuki Sasaki, Kohtaro Abe, Hiroshi Honda
OBJECTIVE: Balloon pulmonary angioplasty (BPA) is used for inoperable chronic thromboembolic pulmonary hypertension (CTEPH), but its effect cannot be evaluated noninvasively. We devised a noninvasive quantitative index of response to BPA using three-dimensional fractal analysis (3D-FA) of technetium-99m-macroaggregated albumin (Tc-MAA) single-photon emission computed tomography (SPECT). PATIENTS AND METHODS: Forty CTEPH patients who underwent pulmonary perfusion scintigraphy and mean pulmonary arterial pressure (mPAP) measurement by right heart catheterization before and after BPA were studied...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28408698/reproducibility-of-lobar-perfusion-and-ventilation-quantification-using-a-spect-ct-segmentation-software-in-lung-cancer-patients
#2
Karine Provost, Antoine Leblond, Annie Gauthier Lemire, Edith Fillion, Houda Bahig, Martin Lord
Planar perfusion scintigraphy with Tc99m-labelled macroaggregated albumin (Tc99m-MAA) is often used for pre-therapy quantification of regional lung perfusion in lung cancer patients, particularly in patients with poor respiratory function. However, subdividing lung parenchyma in rectangular regions of interests, as done on planar images, is a poor reflection of true lobar anatomy. New tridimensional methods using SPECT and SPECT/CT have been introduced, including a semi-automatic lung segmentation software (Hermes Medical Solutions)...
April 13, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28342443/incidental-metastatic-mediastinal-atypical-carcinoid-in-a-patient-with-parathyroid-adenoma-a-case-report
#3
Zareen Kiran, Asma Ahmed, Owais Rashid, Saira Fatima, Faizan Malik, Saulat Fatimi, Mubassher Ikram
BACKGROUND: Atypical carcinoid arising from the mediastinal tissue is a rare neuroendocrine tumor and an association with parathyroid adenoma is very unusual. We report an unusual case of atypical carcinoid of mediastinum with metastasis in a patient presenting with parathyroid adenoma, which is the first case to be reported from Pakistan. CASE PRESENTATION: A 51-year-old Pakistani man was seen in postoperative intensive care after right parathyroidectomy and mediastinal mass resection for the management of postoperative hypocalcaemia...
March 26, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28220598/applicability-of-99m-tc-labeled-human-serum-albumin-scintigraphy-in-dogs-with-protein-losing-enteropathy
#4
N Engelmann, N Ondreka, K von Pückler, S Mohrs, J Sicken, R Neiger
BACKGROUND: Diagnosis of protein loss into the gastrointestinal tract using noninvasive techniques is challenging. In people, scintigraphy not only is a sensitive tool to confirm protein-losing enteropathy (PLE), but it also allows for localization of protein loss. HYPOTHESIS/OBJECTIVES: To investigate the feasibility of (99m) Tc-labeled human serum albumin (HSA) scintigraphy in dogs with PLE in comparison with control dogs. ANIMALS: A total of 8 clinically healthy control research dogs and 7 client-owned dogs with gastrointestinal clinical signs and hypoalbuminemia (serum albumin concentration <2...
March 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28216520/examination-of-some-factors-affected-right-to-left-shunt-rate-and-the-normal-value-of-right-to-left-shunt-rate-in-lung-perfusion-scintigraphy
#5
Fumitoshi Nakamura, Masafumi Okabe, Takaaki Ono, Yousuke Sugimura, Naoko Muromoto, Ryou Suzuki, Taketoshi Okawada
PURPOSE: Diagnosis for right-to-left shunt was determined by the assessment of shunt-rate, which was obtained by using (99 m)Tc-macroaggregated albumin. However, it is difficult to diagnose right-to-left shunt, using the normal level of shunt-rate measured by using conventional methods. To solve this problem, we investigated ourselves the normal level of shunt-rate. METHOD: We researched 20 patients with pulmonary embolism, and they didn't have right-to-left shunt...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28191789/attenuation-of-partial-unilateral-ureteral-obstruction-induced-renal-damage-with-hyperbaric-oxygen-therapy-in-a-rat-model
#6
Eyup Burak Sancak, Yusuf Ziya Tan, Hakan Turkon, Coskun Silan
OBJECTIVE: The objective of the present study was to evaluate the effectiveness of HBO therapy on biochemical parameters, renal morphology and renal scintigraphy in rats undergoing chronic unilateral partial ureteral obstruction (UPUO). MATERIAL AND METHODS: Thirty-five rats were divided into five equal groups: Control group; Sham group; HBO group; UPUO group and UPUO/HBO group. The effects of HBO therapy were examined using biochemical parameters and histopathological changes...
January 27, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28102814/successful-induction-of-peritoneal-dialysis-in%C3%A2-a%C3%A2-patient-with-massive-hydrothorax-due-to%C3%A2-pleuroperitoneal-communication%C3%A2
#7
Takahiro Uchida, Yuji Yamada, Toshihiko Imakiire, Naoki Oshima, Hiroo Kumagai
A 74-year-old woman with liver cirrhosis and chronic kidney disease (CKD) who had complained of chronic abdominal distension due to prominent ascites presented with sudden dyspnea. Chest radiography showed massive right pleural effusion that shifted the mediastinum. Peritoneal scintigraphy using <sup>99</sup>mTc-macroaggregated albumin revealed pleuroperitoneal communication (PPC). As her hydrothorax was refractory and frequent thoracentesis did not improve her respiratory distress, thoracoscopic surgery was performed for repair of the diaphragm defect...
April 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28046903/su-f-t-687-comparison-of-spect-ct-based-methodologies-for-estimating-lung-dose-from-y-90-radioembolization
#8
S Kost, S Lin, N Yu
PURPOSE: To compare mean lung dose (MLD) estimates from 99mTc macroaggregated albumin (MAA) SPECT/CT using two published methodologies for patients treated with (90) Y radioembolization for liver cancer. METHODS: MLD was estimated retrospectively using two methodologies for 40 patients from SPECT/CT images of 99mTc-MAA administered prior to radioembolization. In these two methods, lung shunt fractions (LSFs) were calculated as the ratio of scanned lung activity to the activity in the entire scan volume or to the sum of activity in the lung and liver respectively...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28002156/technetium-99m-albumin-scintigraphy-in-protein-losing-gastroenteropathy-with-systemic-lupus-erythematosus-typical-diagnostic-pattern-of-radiotracer-leakage-and-chronological-improvement-by-treatment
#9
Akira Nishino, Masanori Hanaoka, Yasuhiro Katsumata, Yasushi Kawaguchi, Hisashi Yamanaka
No abstract text is available yet for this article.
January 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/27986173/liver-function-assessment-by-magnetic-resonance-imaging
#10
REVIEW
Emre Ünal, Deniz Akata, Musturay Karcaaltincaba
Liver function assessment by hepatocyte-specific contrast-enhanced magnetic resonance imaging is becoming a new biomarker. Liver function can be assessed by T1 mapping (reduction rate) and signal intensity measurement (relative enhancement ratio) before and after GD-EOB-DTPA (gadoxetic acid) administration, as alternative to Tc-99m galactosyl serum albumin scintigraphy, 99m Tc-labeled mebrofenin scintigraphy, and indocyanine green clearance test. Magnetic resonance imaging assessment of liver function can enable diagnosis of cirrhosis, nonalcoholic fatty liver disease associated fibrosis and steatohepatitis, primary sclerosing cholangitis, toxic hepatitis, and chemotherapy and radiotherapy-related changes, which may be only visible on hepatobiliary phase images...
December 2016: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/27941374/delayed-gastric-emptying-in-advanced-parkinson-disease-correlation-with-therapeutic-doses
#11
Alberto Bestetti, Antonella Capozza, Marco Lacerenza, Luigi Manfredi, Francesca Mancini
INTRODUCTION: Gastrointestinal dysfunction is often described in patients with Parkinson disease (PD), and gastrointestinal symptoms are usually attributed to gastroparesis. The consequent delayed gastric emptying (GE) may be an important pharmacokinetic mechanism underlying some of the response fluctuations that develop after long-term levodopa (L-dopa) therapy.The aim of this prospective study was to assess GE time by a liquid meal scintigraphy, in PD patients, and to correlate them with demographic, clinical, and therapeutic data...
February 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27884683/yttrium-90-radioembolization-with-resin-microspheres-without-routine-embolization-of-the-gastroduodenal-artery
#12
Thomas J Ward, John D Louie, Daniel Y Sze
PURPOSE: To evaluate safety of resin microsphere radioembolization (RE) without prophylactic embolization of the gastroduodenal artery (GDA). MATERIALS AND METHODS: Between July 2013 and April 2015, all patients undergoing RE with resin microspheres for liver-dominant metastatic disease were treated without routine embolization of the GDA. Selective embolization of distal hepaticoenteric vessels was performed if identified by digital subtraction angiography, cone-beam computed tomography, or technetium-99m macroaggregated albumin scintigraphy...
February 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/27857516/sentinel-lymph-node-scintigraphy-in-cutaneous-melanoma-using-a-planar-calibration-phantom-filled-with-tc-99m-pertechnetate-solution-for-body-contouring
#13
Claudiu Peştean, Elena Bărbuş, Andra Piciu, Maria Iulia Larg, Alexandrina Sabo, Cristina Moisescu-Goia, Doina Piciu
BACKGROUND AND AIMS: Melanoma is a disease that has an increasing incidence worldwide. Sentinel lymph node scintigraphy is a diagnostic tool that offers important information regarding the localization of the sentinel lymph nodes offering important input data to establish a pertinent and personalized therapeutic strategy. The golden standard in body contouring for sentinel lymph node scintigraphy is to use a planar flood source of Cobalt-57 (Co-57) placed behind the patients, against the gamma camera...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27833324/hepatocellular-carcinoma-with-intra-atrial-tumor-extension-identified-on-99m-tc-labeled-macroaggregated-albumin-single-photon-emission-computed-tomography-computed-tomography
#14
Piyush Chandra, Sneha Shah, Nilendu Purandare, Archi Agrawal, Venkatesh Rangarajan
(99)mTc macroaggregated albumin (MAA) scintigraphy is always performed before administration of (90)Y--microspheres for the treatment of liver tumors for hepatopulmonary shunt calculation. Tumor thrombus visualization in the hepatic vasculature is an infrequent finding on the (99)m Tc--MAA single photon emission computed tomography. We present a rare case of a hepatocellular carcinoma extending as a tumor thrombus through hepatic vein, inferior vena cava into the right atrium.
October 2016: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/27661042/distribution-of-lung-blood-on-modified-bilateral-glenn-shunt-evaluated-by-tc-99m-maa-lung-perfusion-scintigraphy-a-retrospective-study
#15
Biao Si, Zhao-Sheng Luan, Tong-Jian Wang, Yan-Song Ning, Na Li, Meng Zhu, Zhong-Min Liu, Guang-Hong Ding, Bin Qiao
The aim of the present study was to determine the distribution of lung blood in a modified bilateral Glenn procedure designed in our institute with lung perfusion scintigraphy. Sixteen consecutive patients who underwent modified bilateral Glenn operation from 2011 to 2014 were enrolled in the study. The control group consisted of 7 patients who underwent bidirectional Glenn shunt. Radionuclide lung perfusion scintigraphy was performed using Tc-99m-macro aggregated albumin (MAA) in all patients. For the patients in modified bilateral Glenn group, the time at which the radioactivity accumulation peaked did not differ significantly between the right and left lung field (t = 0...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27556796/deep-vein-thrombosis-presenting-on-pulmonary-ventilation-and-perfusion-scintigraphy
#16
Malak Itani, Joanna Fair, Zachary Hillman, Fatemeh Behnia, Saeed Elojeimy
A 52-year-old woman presenting with dyspnea was referred for a ventilation and perfusion scan (VQ). VQ images (with Tc-DTPA [diethylene triamine pentaacetic acid aerosol] and Tc-MAA [macroaggregated albumin]) initially appeared normal; however, count rates on perfusion images were similar to ventilation images, implying little Tc-MAA had reached the lungs. Spot images of the injected extremity demonstrated focal Tc-MAA accumulation worrisome for a venous thrombus, subsequently confirmed by Doppler ultrasound...
October 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27544383/gallium-68-perfusion-positron-emission-tomography-computed-tomography-to-assess-pulmonary-function-in-lung-cancer-patients-undergoing-surgery
#17
Pierre-Yves Le Roux, Tracy L Leong, Stephen A Barnett, Rodney J Hicks, Jason Callahan, Peter Eu, Renee Manser, Michael S Hofman
BACKGROUND: Pre-operative evaluation of lung cancer patients relies on calculation of predicted post-operative (PPO) lung function based on split lung function testing. Pulmonary perfusion (Q) PET/CT can now be performed by substituting Technetium-99 m labeling of macroaggregated albumin (MAA) with Gallium-68. This study compares Q PET/CT with current recommended methods of pre-operative lung function assessment. METHODS: Twenty-two patients planned for curative surgical resection (mean FEV1 77 %, SD 21 %; mean DLCO 66 %, SD 17 % predicted) underwent pre-operative Q PET/CT...
August 20, 2016: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
https://www.readbyqxmd.com/read/27540433/vertebral-uptake-of-tc-99m-macroaggregated-albumin-maa-with-spect-ct-occurring-in-superior-vena-cava-obstruction
#18
Shawn Karls, Hani Hassoun, Vilma Derbekyan
A 67-year-old male presented with dyspnea for which lung scintigraphy was ordered to rule out pulmonary embolus. Planar images demonstrated abnormal midline uptake of Tc-99m macroaggregated albumin, which SPECT/CT localized to several thoracic vertebrae. Thoracic vertebral uptake on perfusion lung scintigraphy was previously described on planar imaging. Radionuclide venography and contrast-enhanced CT subsequently demonstrated superior vena cava (SVC) obstruction with collateralization through the azygous/hemiazygous system and vertebral venous plexus...
September 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27439923/-can-ischemia-modified-albumin-help-in-differentiating-myocardial-perfusion-scintigraphy-results
#19
Hüseyin Ede, Barış Yaylak, Süleyman Akkaya, Seyhan Karaçavuş, Ayşe Yeşim Göçmen, Ali Rıza Erbay
OBJECTIVE: Myocardial perfusion scintigraphy (MPS) is a diagnostic tool commonly used to detect significant coronary lesion. However equivocal, false negative or positive results can be yielded. Controversial findings regarding the role of ischemia-modified albumin (IMA) in MPS evaluation persist. The aim of the present study was to examine the role of serum IMA in the assessment of MPS results. METHODS: MPS using technetium (99mTc) sestamibi and transthoracic echocardiography was performed on 62 consecutive subjects prospectively enrolled...
July 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/27439919/-can-ischemia-modified-albumin-increase-diagnostic-power-of-myocardial-perfusion-scintigraphy
#20
EDITORIAL
Asife Şahinarslan
No abstract text is available yet for this article.
July 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
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