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https://www.readbyqxmd.com/read/28224198/intraoperative-pth-may-not-be-necessary-in-the-management-of-primary-hyperparathyroidism-even-with-only-one-positive-or-only-indeterminate-preoperative-localization-studies
#1
Alireza Najafian, Stacie Kahan, Matthew T Olson, Ralph P Tufano, Martha A Zeiger
BACKGROUND: Intraoperative PTH (IOPTH) monitoring has been widely used to confirm the removal of the culprit lesion during operation. However, the true benefit of IOPTH in patients with preoperatively well-localized single adenoma has been questioned. The aim of this study was to examine how or if IOPTH changes the surgical management and outcomes in patients with only one positive or only indeterminate localization studies. METHODS: This is a retrospective review of data from a parathyroid surgery database and patient records from July 2004 to June 2014, including patients with primary hyperparathyroidism with a planned MIP by two experienced endocrine surgeons after ≥1 positive/indeterminate preoperative localization study by ultrasound and/or sestamibi...
February 21, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28198536/prevalence-of-risk-factors-and-asymptomatic-carotid-atherosclerosis-in-diabetic-patients-screened-for-silent-myocardial-ischemia-by-spect-myocardial-imaging
#2
Irena Peovska Mitevska, Natalija Baneva, Marijan Bosevski, Elizabeta Srbinovska Kostovska
BACKGROUND: The aim of the study was to evaluate whether there is any association between myocardial ischemia, common risk factors and carotid artery ultrasound parameters in asymptomatic type 2 diabetic (DMT2) patients. MATERIAL AND METHODS: 60 asymptomatic DMT2 patients (pts) without known coronary artery disease (CAD) underwent one day rest Dypiridamole stress Tc-99m sestamibi single photon emission computed tomography myocardial perfusion scintigraphy (MPS)...
2017: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/28192245/feasibility-and-safety-of-minimally-invasive-radioguided-parathyroidectomy-using-very-low-intraoperative-dose-of-tc-99m-mibi
#3
Mostafa Mehrabibahar, Zohreh Mousavi, Ramin Sadeghi, Parvin Layegh, Masoumeh Nouri, Mehdi Asadi
BACKGROUND: Surgical resection of the abnormal parathyroid glands is the only curative treatment for primary hyperparathyroidism (PHPT). Radioguided parathyroidectomy with technetium-99m (TC-99m) sestamibi has been successfully used in patients with PHPT. This study was designed to evaluate the results of a series of patients with PHPT who underwent minimally invasive radioguided parathyroidectomy (MIRP) using very low dose (1 mCi) of TC-99m sestamibi (MIBI) without application of intraoperative parathyroid hormone (PTH) assay or frozen section analysis...
February 10, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28176257/left-ventricular-phase-entropy-novel-prognostic-predictor-in-patients-with-dilated-cardiomyopathy-and-narrow-qrs
#4
Naoaki Kano, Takahiro Okumura, Satoshi Isobe, Akinori Sawamura, Naoki Watanabe, Kenji Fukaya, Hiroaki Mori, Ryota Morimoto, Katsuhiko Kato, Yasuko K Bando, Toyoaki Murohara
BACKGROUND: The prognostic impact and pathophysiology of global left ventricular mechanical dyssynchrony (LVMD), namely mechanical dyssynchrony of whole left ventricle, as assessed by phase analysis of electrocardiographically gated (ECG-gated) myocardial perfusion SPECT has not been clearly elucidated in patients with dilated cardiomyopathy (DCM) and narrow QRS complex (<120 ms). METHODS AND RESULTS: Forty-six patients with DCM underwent ECG-gated myocardial (99m)Tc-sestamibi perfusion SPECT and endomyocardial biopsy...
February 7, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28166819/validation-of-selective-use-of-intraoperative-pth-monitoring-in-parathyroidectomy
#5
Alexandra Thielmann, Paul Kerr
BACKGROUND: The objective of this study was to validate our approach of treating primary hyperparathyroidism using sestamibi scan directed parathyroidectomy, without routine use of intraoperative parathyroid hormone measurements (ioPTH). METHODS: We prospectively established a protocol limiting the use of ioPTH to patients with negative or equivocal sestamibi scans, and those who had risk factors for multi-gland disease. We then performed a retrospective review to determine our disease control rate...
February 6, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28150082/relationship-between-gated-myocardial-perfusion-spect-findings-and-hemodynamic-electrocardiographic-and-heart-rate-changes-after-dipyridamole-infusion
#6
Arash Gholoobi, Narjess Ayati, Alireza Baghyari, Mohsen Mouhebati, Baharak Atar, Vahid Reza Dabbagh Kakhki
After dipyridamole infusion, electrocardiographic (ECG), blood pressure and heart rate (HR) changes were seen. We tried to investigate whether there is a relationship between hemodynamic, ECG and HR changes after dipyridamole infusion and gated myocardial perfusion SPECT findings. We studied 206 consecutive patients which underwent a 2-day protocol Dipyridamole Stress/Rest Tc99m-Sestamibi gated myocardial perfusion SPECT. Systolic blood pressure (SBP), diastolic blood pressure (DBP), HR and ECG were recorded...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28146214/case-report-multivessel-coronary-disease-assessment-with-spect-99mtc-sestamibi-and-rubidium-82-pet-ct
#7
Bruno Gomes Padilha, Daniela Sabino, Maria Clementina Giorgi, José Soares, Marisa Izaki, José Claudio Meneghetti
No abstract text is available yet for this article.
January 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28145779/scan-directed-mini-incision-focused-parathyroidectomy-how-accurate-is-accurate-enough
#8
I M Shapey, S Jabbar, Z Khan, J E Nicholson, R J Watson
INTRODUCTION Mini-incision focused parathyroidectomy (MI-FP) is advocated as an alternative to bilateral neck exploration (BNE), owing to its reduced morbidity. The site and side of the affected gland is identified preoperatively using a combination of ultrasound and sestamibi scans. However, the acceptable degree of inter-scan concordance required to prompt MI-FP without compromising accuracy is undetermined. METHODS Accuracy of preoperative imaging was determined both individually and in combination for all parathyroidectomies (2007-2014)...
February 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28121522/-18-f-fluorocholine-pet-mr-imaging-in-patients-with-primary-hyperparathyroidism-and-inconclusive-conventional-imaging-a-prospective-pilot-study
#9
Wouter P Kluijfhout, Jesse D Pasternak, Jessica E Gosnell, Wen T Shen, Quan-Yang Duh, Menno R Vriens, Bart de Keizer, Thomas A Hope, Christine M Glastonbury, Miguel H Pampaloni, Insoo Suh
Purpose To investigate the performance of flourine 18 ((18)F) fluorocholine (FCH) positron emission tomography (PET)/magnetic resonance (MR) imaging in patients with hyperparathyroidism and nonlocalized disease who have negative or inconclusive results at ultrasonography (US) and technetium 99m ((99m)Tc) sestamibi scintigraphy. Materials and Methods This study was approved by the institutional review board. Between May and December 2015, 10 patients (mean age, 70.4 years; range, 58-82 years) with biochemical primary hyperparathyroidism and inconclusive results at US and (99m)Tc sestamibi scintigraphy were prospectively enrolled...
January 25, 2017: Radiology
https://www.readbyqxmd.com/read/28108033/the-utility-of-repeat-sestamibi-scans-in-patients-with-primary-hyperparathyroidism-after-an-initial-negative-scan
#10
Vikram D Krishnamurthy, Sara Sound, Alexis K Okoh, Pinar Yazici, Hakan Yigitbas, Donald Neumann, Krupa Doshi, Eren Berber
BACKGROUND: We analyzed the utility of repeated sestambi scans in patients with primary hyperparathyroidism and its effects on operative referral. METHODS: We carried out a retrospective review of patients with primary hyperparathyroidism who underwent repeated sestambi scans exclusively within our health system between 1996-2015. Patient demographic, presentation, laboratory, imaging, operative, and pathologic data were reviewed. Univariate analysis with JMP Pro v12 was used to identify factors associated with conversion from an initial negative to a subsequent positive scan...
January 17, 2017: Surgery
https://www.readbyqxmd.com/read/28091980/comparison-of-tc-99m-maraciclatide-and-tc-99m-sestamibi-molecular-breast-imaging-in-patients-with-suspected-breast-cancer
#11
Michael K O'Connor, Melissa M B Morrow, Katie N Hunt, Judy C Boughey, Dietlind L Wahner-Roedler, Amy Lynn Conners, Deborah J Rhodes, Carrie B Hruska
BACKGROUND: Molecular breast imaging (MBI) performed with (99m)Tc sestamibi has been shown to be a valuable technique for the detection of breast cancer. Alternative radiotracers such as (99m)Tc maraciclatide may offer improved uptake in breast lesions. The purpose of this study was to compare relative performance of (99m)Tc sestamibi and (99m)Tc maraciclatide in patients with suspected breast cancer, using a high-resolution dedicated gamma camera for MBI. Women with breast lesions suspicious for malignancy were recruited to undergo two MBI examinations-one with (99m)Tc sestamibi and one with (99m)Tc maraciclatide...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28077904/regadenoson-in-myocardial-perfusion-study-first-institutional-experiences-in-bosnia-and-herzegovina
#12
Nermina Beslic, Renata Milardovic, Amera Sadija, Sejla Ceric, Zeljka Raic
INTRODUCTION: Myocardial perfusion imaging (MPI) is widely used in the evaluation of known and suspected coronary artery disease (CAD). Imaging of heart in stress and rest enables the comparison of myocardial uptake of radiotracer in proportion to the needs and coronary flow, which is used for detection of perfusion defects. Exercise stress and pharmacologic agents are used for the stressing purpose. Novel pharmacologic stressor regadenoson is A2A selective adenosine agonist, which selectively binds to the adenosine receptors in coronary arteries causing coronary dilatation...
December 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28033216/incremental-value-of-18f-fluorocholine-pet-ct-in-the-localization-of-double-parathyroid-adenomas
#13
Paul Lalire, Sang Ly, Sophie Deguelte, Martine Patey, David Morland
A 73-year-old man displaying primary hyperparathyroidism with severe hypercalcemia (Ca: 4.1 mmol/l, PTH > 600 pmol/l) was referred for preoperative localization of a parathyroid adenoma. Tc-pertechnetate and Tc-sestaMIBI dual tracer scintigraphy displayed a mild focal uptake in the projection of the right thyroid lobe with negative ultrasonography. F-Fluorocholine PET/CT was quickly performed considering this discrepancy and not only confirmed the scintigraphic findings but also revealed a second contralateral focus of increased uptake, both later confirmed by operative consideration (the two other parathyroid glands are considered normal by the surgeon), pathology, and intraoperative parathyroid hormone assessment...
March 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28032913/correction-of-hysteretic-respiratory-motion-in-spect-myocardial-perfusion-imaging-simulation-and-patient-studies
#14
Paul K R Dasari, Arda Könik, P Hendrik Pretorius, Karen L Johnson, William P Segars, Mohammed S Shazeeb, Michael A King
PURPOSE: Amplitude based respiratory gating is known to capture the extent of respiratory motion (RM) accurately but results in residual motion in the presence of respiratory hysteresis. In our previous study, we proposed and developed a novel approach to account for respiratory hysteresis by applying the Bouc-Wen (BW) model of hysteresis to external surrogate signals of anterior / posterior motion of the abdomen and chest with respiration. In this work using simulated and clinical SPECT myocardial perfusion imaging (MPI) studies, we investigate the effects of respiratory hysteresis and evaluate the benefit of correcting it using the proposed BW model in comparison with the abdomen signal typically employed clinically...
December 29, 2016: Medical Physics
https://www.readbyqxmd.com/read/28028974/myocardial-ischaemia-coronary-atherosclerosis-and-pulmonary-pressure-elevation-in-antiphospholipid-syndrome-patients
#15
Agnieszka Padjas, Wojciech Płazak, Magdalena Celińska-Lowenhoff, Adam Mazurek, Carlo Perricone, Piotr Podolec, Jacek Musiał
BACKGROUND: Thrombotic events in antiphospholipid syndrome (APS) involve venous and arterial circulation with the possible involvement of coronary or pulmonary microcirculation. OBJECTIVES: To evaluate the influence of antiphospholipid antibodies (aPL) and on myocardial ischaemia assessed by single-photon emission computerized tomography (SPECT), coronary atherosclerosis assessed by multidetector computerized tomography (MDCT) and pulmonary pressure assessed by transthoracic echocardiography (TTE) in patients with primary antiphospholipid syndrome (PAPS)...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28017299/is-intraoperative-parathyroid-hormone-monitoring-necessary-for-primary-hyperparathyroidism-with-concordant-preoperative-imaging
#16
Iuliana D Bobanga, Christopher R McHenry
BACKGROUND: The purpose of this study was to determine if intraoperative parathyroid hormone (PTH) monitoring is necessary in patients with concordant ultrasound and sestamibi imaging. METHODS: Clinical factors, intraoperative findings and outcome were correlated with imaging results in patients with primary hyperparathyroidism who underwent parathyroidectomy with concordant ultrasound and sestamibi imaging. RESULTS: There were 127 patients with primary hyperparathyroidism and concordant imaging who underwent parathyroidectomy...
November 23, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/28002382/the-mental-stress-ischemia-prognosis-study-mips-objectives-study-design-and-prevalence-of-inducible-ischemia
#17
Muhammad Hammadah, Ibhar Al Mheid, Kobina Wilmot, Ronnie Ramadan, Amit J Shah, Yan Sun, Brad Pearce, Ernest V Garcia, Michael Kutner, J Douglas Bremner, Fabio Esteves, Paolo Raggi, David S Sheps, Viola Vaccarino, Arshed A Quyyumi
OBJECTIVE: Mental stress-induced myocardial ischemia (MSIMI) is a common phenomenon in patients with coronary artery disease (CAD), but contemporary studies of its prognostic significance and its underlying pathophysiology are limited. METHODS: We prospectively enrolled patients with confirmed CAD in the Mental Stress Ischemia Prognosis Study (MIPS) between 2011 and 2014. All patients underwent mental stress testing using a standardized public speaking task and ischemia was detected by 99mTc sestamibi myocardial perfusion imaging...
December 20, 2016: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28000164/respiratory-average-ct-for-attenuation-correction-in-myocardial-perfusion-spect-ct
#18
Duo Zhang, Bang-Hung Yang, Nien Yun Wu, Greta Seng Peng Mok
OBJECTIVE: Cine average CT (CACT) and interpolated average CT (IACT) have been proposed to improve attenuation correction (AC) for PET/CT in oncologic and cardiac studies. This study aims to evaluate their effectiveness on myocardial perfusion SPECT/CT using computer simulation and physical phantom experiments. METHODS: We first simulated normal male with (99m)Tc-sestamibi distribution using digital XCAT phantom with respiratory motion amplitudes of 2, 3, and 4 cm...
February 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27987028/left-ventricular-function-in-response-to-dipyridamole-stress-head-to-head-comparison-between-82-rubidium-pet-and-99m-tc-sestamibi-spect-ecg-gated-myocardial-perfusion-imaging
#19
Maria Clementina Giorgi, Jose Claudio Meneghetti, Jose Soares, Marisa Izaki, Andréa Falcão, Rodrigo Imada, William Chalela, Marco Antonio de Oliveira, Cesar Nomura, Hein J Verberne
PURPOSE: Myocardial perfusion imaging (MPI) with (99m)Tc-sestamibi (sestamibi) SPECT and rubidium-82 ((82)Rb) PET both allow for combined assessment of perfusion and left ventricular (LV) function. We sought to compare parameters of LV function obtained with both methods using a single dipyridamole stress dose. MATERIALS AND METHODS: A group of 221 consecutive patients (65.2 ± 10.4 years, 52.9% male) underwent consecutive sestamibi and (82)Rb MPI after a single dipyridamole stress dose...
December 16, 2016: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27941372/early-and-delayed-18f-fch-pet-ct-imaging-in-parathyroid-adenomas
#20
Cecilia Vellani, Marina Hodolič, Spyridon Chytiris, Giuseppe Trifirò, Domenico Rubello, Patrick M Colletti
Preoperative localization with Tc-sestaMIBI or ultrasound is a common prerequisite for successful minimally invasive parathyroid adenoma (PA) surgery. SPECT/CT with Tc-sestaMIBI and PET/CT with F-FCH offer the possibility of attenuation correction and coregistration of functional and anatomical images providing more accurate PA localization. F-FCH PET/CT is used predominantly in patients with prostate cancer and is under investigation in PA. We report the case of a 43-year-old man with early FCH uptake in a cystic PA with delayed washout at 60 minutes...
February 2017: Clinical Nuclear Medicine
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