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99m Tc SPECT

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https://www.readbyqxmd.com/read/29327129/quantification-of-osteoblastic-activity-in-epiphyseal-growth-plates-by-quantitative-bone-spect-ct
#1
Tomohiko Yamane, Ichiei Kuji, Akira Seto, Ichiro Matsunari
OBJECTIVE: Quantifying the function of the epiphyseal plate is worthwhile for the management of children with growth disorders. The aim of this retrospective study was to quantify the osteoblastic activity at the epiphyseal plate using the quantitative bone SPECT/CT. MATERIALS AND METHODS: We enrolled patients under the age of 20 years who received Tc-99m hydroxymethylene diphosphonate bone scintigraphy acquired by a quantitative SPECT/CT scanner. The images were reconstructed by ordered subset conjugate-gradient minimizer, and the uptake on the distal margin of the femur was quantified by peak standardized uptake value (SUVpeak)...
January 11, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29319202/analysis-of-brain-spect-images-coregistered-with-mri-in-patients-with-epilepsy-comparison-of-three-methods
#2
Zaiyang Long, Dennis P Hanson, Brian P Mullan, Christopher H Hunt, David R Holmes, Benjamin H Brinkmann, Michael K O'Connor
BACKGROUND AND PURPOSE: SISCOM and STATISCOM were clinically proved to be effective for ictal/inter-ictal single-photon emission computed tomography (SPECT) analysis coregistered with magnetic resonance imaging (MRI) for seizure localization. Recently, a software package also became available for this analysis. This study aimed to investigate and compare the performance of these analysis methods for seizure localization. METHODS: A total of 378 patients who underwent 99m Tc-ethyl cysteinate dimer (ECD) SPECT scans were retrospectively reviewed and 28 remained after applying exclusion criteria...
January 10, 2018: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29319134/diagnostic-accuracy-of-planar-spect-and-spect-ct-parathyroid-scintigraphy-protocols-in-patients-with-hyperparathyroidism
#3
Yutapong Raruenrom, Daris Theerakulpisut, Nantaporn Wongsurawat, Charoonsak Somboonporn
BACKGROUND: Several parathyroid scintigraphy protocols have been used for preoperative localization of hyperfunctioning parathyroid glands in patients with hyperparathyroidism. The aim of this study is to compare the diagnostic accuracy of various parathyroid scintigraphy protocols. MATERIAL AND METHODS: A retrospective diagnostic accuracy study with histopathology as the reference standard was done. Five imaging protocols were investigated including planar dual tracer Tc-99m pertechnetate/Tc-99m sestamibi (DT), planar dual phase Tc-99m sestamibi (DP), and combined dual tracer dual phase (DTDP) protocols, as well as add-on single photon emission computed tomography (SPECT), and single photon emission computed tomography/computed tomography (SPECT/CT)...
January 10, 2018: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/29319132/evaluation-of-changes-in-perfusion-defect-and-left-ventricular-systolic-function-using-tc-99m-tetrofosmin-single-photon-emission-computed-tomography-over-3-month-period-in-patients-of-acute-myocardial-infarction-undergoing-primary-angioplasty
#4
Anil Kumar Avs, P G Kumar, Ajay Swami, Yiteedra Dinker
BACKGROUND: After a primary transluminal coronary angioplasty (PTCA) following AMI (acute myocardial infarction), the perfusion defect and LV (left ventricular) function recover/change over a period of time. The analysis immediately after the procedure may not be true depiction of the exact success of the procedure. There is varying and scanty information available on the natural course of changes in these parameters after a successful PTCA. We hypothesized that majority of change occurs at 3-4 month period...
January 10, 2018: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/29305666/decorated-superparamagnetic-iron-oxide-nanoparticles-with-monoclonal-antibody-and-diethylene-triamine-pentaacetic-acid-labeled-with-thechnetium-99m-and-galium-68-for-breast-cancer-imaging
#5
Marta de Souza Albernaz, Sergio Hiroshi Toma, Jeff Clanton, Koiti Araki, Ralph Santos-Oliveira
PURPOSE: In this study we developed and tested an iron oxide nanoparticle conjugated with DTPA and Trastuzumab, which can efficiently be radiolabeled with 99m-Tc and Ga-68, generating a nanoradiopharmaceutical agent to be used for SPECT and PET imaging. METHODS: The production of iron oxide nanoparticle conjugated with DTPA and Trastuzumab was made using phosphorylethanolamine (PEA) surface modification. Both radiolabeling process was made by the direct radiolabeling of the nanoparticles...
January 5, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29297607/signal-enhancement-ratio-imaging-of-the-lung-parenchyma-with-ultra-fast-steady-state-free-precession-mri-at-1-5t
#6
Orso Pusterla, Gregor Sommer, Francesco Santini, Mark Wiese, Didier Lardinois, Michael Tamm, Jens Bremerich, Grzegorz Bauman, Oliver Bieri
BACKGROUND: Lung perfusion MRI after i.v. gadolinium (Gd) contrast administration is commonly based on spoiled gradient-echo acquisitions, such as volume-interpolated breath-hold examinations (VIBE), suffering from low signal-to-noise in the parenchyma. PURPOSE: To investigate the lung signal enhancement ratio (SER) with ultra-fast steady-state free precession (ufSSFP) after Gd-administration. STUDY TYPE: Retrospective. SUBJECTS: Ten subjects with healthy lungs; nine patients with pulmonary diseases (chronic obstructive pulmonary disease [COPD], lung cancer, pulmonary fibrosis, lung contusion)...
January 3, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29249274/evaluation-of-the-diagnostic-value-of-preoperative-sentinel-lymph-node-sln-imaging-in-penile-carcinoma-patients-without-palpable-inguinal-lymph-nodes-via-single-photon-emission-computed-tomography-computed-tomography-spect-ct-as-compared-to-planar-scintigraphy
#7
Carsten Maik Naumann, Christian Colberg, Michael Jüptner, Marlies Marx, Yi Zhao, Ping Jiang, Moritz Franz Hamann, Klaus-Peter Jünemann, Maaz Zuhayra, Ulf Lützen
BACKGROUND: Sentinel lymph node (SLN) biopsy represents a well-established diagnostic tool for the assessment of lymphatic metastasis. Correct pre- and intraoperative visualization of SLN is of the utmost importance to ensure the safety and feasibility of the procedure. Aim of this study was to evaluate the diagnostic value of preoperative SLN imaging via single photon emission computed tomography/computed tomography (SPECT/CT) and planar scintigraphy in patients with penile carcinoma with nonpalpable inguinal lymph nodes...
December 14, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29242732/usefulness-of-tc-99m-pertechnetate-spect-ct-in-the-diagnosis-of-testicular-infarction-after-inguinal-herniorrhaphy
#8
Myoung Hyoun Kim, Chang Guhn Kim, Soon-Ah Park, Dae-Weung Kim
A 77-year-old male underwent open repair for a right indirect inguinal hernia and complained of right scrotal pain on the third postoperative day. Color Doppler imaging revealed decreased blood flow with heterogeneous hypoechogenicity in the right testis. A Tc-99m pertechnetate testicular scan showed diffuse hyperemia and increased uptake in the right scrotum. Additional SPECT/CT revealed a photon defect in the right testicle with increased uptake in the peri-testicular area. A subsequent operation revealed a large hematoma in the right spermatic cord and consequent right testicular infarction, and right orchiectomy was performed...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242728/quantitative-single-photon-emission-computed-tomography-computed-tomography-for-glomerular-filtration-rate-measurement
#9
Yeon-Koo Kang, Sohyun Park, Min Seok Suh, Seok-Soo Byun, Dong-Wan Chae, Won Woo Lee
Purpose: We propose a quantitative Tc-99m diethylenetriaminepentaacetic acid (DTPA) single-photon emission computed tomography/computed tomography (SPECT/CT) for glomerular filtration rate (GFR) measurement. Methods: Quantitative SPECT/CT data obtained at 2-3 min post-Tc-99m DTPA injection (370 MBq) were used to determine % injected doses (%IDs) for individual kidneys. The reproducibility of %ID measurement was tested and compared with planar scintigraphy. Cr-51 ethylenediaminetetraacetic acid (EDTA) GFR was used as reference standard...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242727/evaluation-of-cadmium-zinc-telluride-detector-based-single-photon-emission-computed-tomography-for-nuclear-cardiology-a-comparison-with-conventional-anger-single-photon-emission-computed-tomography
#10
Takanaga Niimi, Mamoru Nanasato, Mitsuo Sugimoto, Hisatoshi Maeda
Purpose: The differences in performance between the cadmium-zinc-telluride (CZT) camera or collimation systems and conventional Anger single-photon emission computed tomography (A-SPECT) remain insufficient from the viewpoint of the user. We evaluated the performance of the D-SPECT (Spectrum Dynamics, Israel) system to provide more information to the cardiologist or radiological technologist about its use in the clinical field. Materials and Methods: This study evaluated the performance of the D-SPECT system in terms of energy resolution, detector sensitivity, spatial resolution, modulation transfer function (MTF), and collimator resolution in comparison with that of A-SPECT (Bright-View, Philips, Japan)...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29188334/increased-in-vivo-patellofemoral-loading-after-total-knee-arthroplasty-in-resurfaced-patellae
#11
Omer Slevin, Florian A Schmid, Filippo Schiapparelli, Helmut Rasch, Michael T Hirschmann
PURPOSE: The primary purpose of the study was to investigate if and how patellar bone tracer uptake (BTU) distribution in SPECT/CT is influenced by patellar resurfacing and the position of femoral and tibial TKA component position. METHODS: A total of 104 knees of 103 consecutive patients who underwent primary TKA were prospectively investigated. Primary patellar resurfacing was done in 40 knees while 64 had a TKA without patellar resurfacing. All patients underwent clinical assessment using the knee society score (KSS) and standardized radiographs and Tc-99m-HDP-SPECT/CT before and 12 and 24 months after TKA...
November 29, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29184876/feasibility-of-sentinel-lymph-node-dissection-using-tc-99m-phytate-in-papillary-thyroid-carcinoma
#12
Se Hyun Paek, Ka Hee Yi, Su-Jin Kim, June Young Choi, Kyu Eun Lee, Young Joo Park, Do-Joon Park, Keon Wook Kang, June-Key Chung
Purpose: Various methods of sentinel lymph node (SLN) biopsy in thyroid cancer have been introduced. Tc-99m phytate as a radiotracer has been successfully utilized for SLN biopsy in breast, cervix, and endometrial cancer. We assessed the feasibility of SLN dissection using Tc-99m phytate in papillary thyroid carcinoma (PTC). Methods: Seventeen patients with PTC were prospectively enrolled. Ultrasound-guided peritumoral injection of 55.5 MBq Tc-99m phytate in 0.25-mL normal saline was performed...
November 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29170426/non-invasive-whole-body-detection-of-complement-activation-using-radionuclide-imaging-in-a-mouse-model-of-myocardial-ischaemia-reperfusion-injury
#13
Ehsan Sharif-Paghaleh, May Lin Yap, Sarah-Lena Puhl, Adam Badar, Julia Baguña Torres, Krisanat Chuamsaamarkkee, Florian Kampmeier, Richard A Smith, James Clark, Philip J Blower, Steven Sacks, Gregory E Mullen
Complement activation is a recognised mediator of myocardial ischaemia-reperfusion-injury (IRI) and cardiomyocytes are a known source of complement proteins including the central component C3, whose activation products can mediate tissue inflammation, cell death and profibrotic signalling. We investigated the potential to detect and quantify the stable covalently bound product C3d by external body imaging, as a marker of complement activation in heart muscle in a murine model of myocardial IRI. We used single-photon-emission-computed-tomography (SPECT) in conjunction with (99m)Technecium-labelled recombinant complement receptor 2 ((99m)Tc-rCR2), which specifically detects C3d at the site of complement activation...
November 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29164482/molecular-imaging-in-musculoskeletal-infections-with-99m-tc-ubi-29-41-spect-ct
#14
Mike Sathekge, Osvaldo Garcia-Perez, Diana Paez, Noura El-Haj, Taylor Kain-Godoy, Ismaheel Lawal, Enrique Estrada-Lobato
OBJECTIVE: To determine the added value of CT over planar and SPECT-only imaging in the diagnosis of musculoskeletal infection using (99m)Tc-UBI 29-4. MATERIALS AND METHODS: 184 patients with suspected musculoskeletal infection who underwent planar and SPECT/CT imaging with (99m)Tc-UBI 29-41 were included. Planar, SPECT-only and SPECT/CT images were reviewed by two independent analysts for presence of bone or soft tissue infection. Final diagnosis was confirmed with tissue cultures, surgery/histology or clinical follow-up...
November 21, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29152431/intensity-modulated-proton-therapy-with-advanced-planning-techniques-in-a-challenging-hepatocellular-carcinoma-patient
#15
Smith Apisarnthanarax, Jatinder Saini, Avril O'Ryan-Blair, Jackie Castro, Stephen R Bowen
The use of radiation therapy has been increasing over recent years for the treatment of hepatocellular carcinoma (HCC). Proton beam therapy (PBT) has emerged as a promising treatment option for HCC patients due to its dosimetric advantages of sparing more normal liver tissue from radiation at low to moderate doses compared to photon-based treatments while still delivering high doses of radiation to tumors. The PBT therapy may be particularly beneficial in high-risk HCC cirrhotic patients with large, bulky tumors and/or vascular invasion complicated by surrounding perfusion abnormalities...
September 10, 2017: Curēus
https://www.readbyqxmd.com/read/29145285/degeneration-of-paramedian-nuclei-in-the-thalamus-induces-holmes-tremor-in-a-case-of-artery-of-percheron-infarction
#16
Tz-Shiang Wei, Chun-Sheng Hsu, Yu-Chun Lee, Shin-Tsu Chang
RATIONALE: Holmes' tremor is an uncommon neurologic disorder following brain insults, and its pathogenesis is undefined. The interruption of the dento-rubro-thalamic tract and secondary deterioration of the nigrostriatal pathway are both required to initiate Holmes' tremor. We used nuclear medicine imaging tools to analyze a patient with concurrent infarction in different zones of each side of the thalamus. Finding whether the paramedian nuclear groups of the thalamus were injured was a decisive element for developing Holmes' tremor...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29140573/-99m-tc-labeled-rhuepo-for-imaging-of-the-erythropoietin-receptor-in-tumors
#17
Xiaoqing Zhuang, Dan Zhao, Pengfei Yang, Yingqin Jia, Rui Liang, Qian Zhao, Chunlei Han, Joseph M Kinsella, Ruilong Sheng, Juan Li
To analyze erythropoietin receptor (EpoR) status in tumors, recombinant human erythropoietin (rHuEpo) was labeled with (99m) Tc by (99m) Tc-centered one-pot synthesis, resulting in high radiochemical purity, stability and biological activity. Both in vitro cell culture experiments and biodistribution studies of normal rats demonstrated successful EpoR targeting. The biodistribution of labeled rHuEpo in a NCI-H1975 xenograft model showed tumor accumulation (tumor-to-muscle ratio: 4.27±1.77), confirming the expression of active EpoR in tumors...
November 15, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29122401/the-efficacy-of-adrenocorticotropic-hormone-in-a-girl-with-anti-n-methyl-d-aspartate-receptor-encephalitis
#18
Mari Hatanaka, Shuichi Shimakawa, Akihisa Okumura, Jun Natsume, Miho Fukui, Shohei Nomura, Mitsuru Kashiwagi, Hiroshi Tamai
BACKGROUND: Immunomodulatory therapy has shown some therapeutic benefits in patients with anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis. In this report, we describe the use of adrenocorticotropic hormone (ACTH) immunotherapy with good outcome in a patient with anti-NMDAR encephalitis. SUBJECT AND METHODS: A 4-year-old girl developed convulsions in her right arm and leg without impaired consciousness. These convulsions occurred frequently in clusters of 10-20 events of 10-20 s duration...
November 6, 2017: Brain & Development
https://www.readbyqxmd.com/read/29119373/additional-value-of-systolic-wall-thickening-in-myocardial-stunning-evaluated-by-stress-rest-gated-perfusion-spect
#19
Alberto Bestetti, Besart Cuko, Adriano Decarli, Alessio Galli, Federico Lombardi
AIM AND PATIENTS: The aim of the present study is to evaluate the additional value of systolic wall thickening to myocardial perfusion in diagnosing myocardial stunning in patients with angiography proven coronary artery disease. We selected 91 ischemic patients (82 males; mean age 59.7 ± 10.3) with CAD documented by angiography. Ischemia was defined as a summed difference score ≥5. All patients underwent a 2-day gated perfusion SPECT protocol. The patients received a dose of 740 MBq of 99mTc-tetrofosmin after stress and at rest...
November 8, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29116562/prediction-of-long-term-%C3%A2-10%C3%A2-year-cardiovascular-outcomes-in-heart-transplant-recipients-value-of-stress-technetium-99m-tetrofosmin-myocardial-perfusion-imaging
#20
Jesse F Veenis, Hendrik J Boiten, Jan C van den Berge, Kadir Caliskan, Alex P W M Maat, Roelf Valkema, Alina A Constantinescu, Olivier C Manintveld, Felix Zijlstra, Ron T van Domburg, Arend F L Schinkel
BACKGROUND: Myocardial perfusion imaging (MPI) using single-photon emission computed tomography (SPECT) is useful in the evaluation of cardiac allograft vasculopathy (CAV) in heart transplant (HTx) recipients. The current study evaluated the long-term prognostic value of stress SPECT MPI for predicting all-cause mortality and cardiac events in HTx recipients. METHODS: The study population consisted of 166 HTx recipients (mean age 54 ± 10 years, 84% male) who underwent exercise or dobutamine stress (99m)Tc-tetrofosmin SPECT MPI for the assessment of CAV...
November 7, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
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