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Tao Liu, Shenghao Wang, Hao Liu, Bin Meng, Feng Zhou, Fan He, Xiaojian Shi, Huilin Yang
OBJECTIVE: To perform a meta-analysis to compare the diagnostic value of magnetic resonance imaging (MRI), computed tomography (CT), positron emission tomography (PET), bone scintigraphy (BS) and BS with single-photon emission computed tomography (SPECT) in detecting vertebral metastases. METHODS: Relevant original articles published from January 1995 to December 2015 were searched. Two reviewers independently extracted data. Software called "META-DiSc" was used to obtain pooled estimates of sensitivity, specificity, diagnostic odds ratio (DOR) and summary receiver operating characteristic (SROC) curves...
October 17, 2016: Journal of Cancer Research and Clinical Oncology
Sang-Geon Cho, Zeenat Jabin, Ki Seong Park, Jahae Kim, Sae-Ryung Kang, Seong Young Kwon, Geum-Cheol Jeong, Minchul Song, Jong Sang Kim, Jae Yeong Cho, Hyun Kuk Kim, Ho-Chun Song, Jung-Joon Min, Hee-Seung Bom
PURPOSE: The aim of this study was to evaluate the prognostic value of additional evaluation of left ventricular mechanical dyssynchrony (LVMD) by gated myocardial perfusion single-photon emission computed tomography (GMPS) in patients with acute myocardial infarction (MI) and multivessel disease. METHODS: One hundred and nine acute MI patients with >50 % stenosis in at least one non-culprit artery who underwent GMPS within 2 weeks were enrolled. All patients underwent successful revascularization of the culprit arteries...
October 18, 2016: European Journal of Nuclear Medicine and Molecular Imaging
A Venkatraman, A Khawaja, A K Bag, M Mirza, J P Szaflarski, S Pati
Lateralized Periodic Discharges (LPDs) are commonly seen on EEG in critically-ill patients. They are often associated with seizures, but some patients may have them without seizures. Therefore, they are considered to lie in the ictal-interictal continuum. When ictal, they require multiple antiepileptic drugs to treat effectively, which can expose the patient to iatrogenic complications. Therefore, optimal management is controversial. We present here two cases where perfusion-weighted Magnetic Resonance Imaging (pMRI) was useful in distinguishing ictal from interictal LPDs...
October 5, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Samine Sahbai, Florin-Andrei Taran, Francesco Fiz, Annette Staebler, Sven Becker, Erich Solomayer, Diethelm Wallwiener, Christian la Fougère, Sara Brucker, Helmut Dittmann
PURPOSE: Scintigraphic mapping of sentinel lymph node (SLN) is increasingly performed in patients with endometrial carcinoma although its routine clinical use is still under investigation. The purpose of this study was to compare preoperative SLN detection by means of SPECT/CT using pericervical (PC) versus hysteroscopic peritumoral (PT) injection. PATIENTS AND METHODS: One hundred forty consecutive patients with endometrial carcinoma who underwent surgery and preoperative SLN SPECT/CT with Tc-nanocolloid were included...
October 5, 2016: Clinical Nuclear Medicine
Khimling Tew, David Farlow
Sentinel lymph node biopsy is a crucial part of staging intermediate and thick melanoma. Lymphatic drainage from a tumor site can be highly variable, especially on the head, neck, and trunk. SPECT/CT fuses nuclear medicine and x-ray CT images to produce images with high anatomic detail. At our institution, SPECT/CT is performed routinely in addition to planar imaging. This article presents examples where SPECT/CT has proven helpful in image interpretation.
October 5, 2016: Clinical Nuclear Medicine
Chadwick L Wright, Jun Zhang, Katherine Binzel, Evan J Wuthrick, Michael V Knopp
Imaging of Y internal pair production with conventional photomultiplier detector PET technology has been previously reported for patients with malignant/metastatic liver lesions treated with Y radioembolization (RE). We present a 54-year-old man with unresectable liver metastases from rectal carcinoma (involving the right and left lobes) who was referred for Y RE and subsequently imaged using new solid-state digital photon counting technology (Vereos 64 Time-of-Flight PET/CT; Philips, Cleveland, OH). Despite imaging at 26 hours following RE, digital PET/CT provides improved image quality and Y-to-background contrast as well as accurate visualization of Y biodistribution when compared with Bremsstrahlung SPECT/CT...
October 5, 2016: Clinical Nuclear Medicine
Elisa Tardelli, Sara Mazzarri, Domenico Rubello, Marta Gennaro, Lorenzo Fantechi, Valerio Duce, Antonella Romanini, Sotirios Chondrogiannis, Duccio Volterrani, Patrick M Colletti, Gianpiero Manca
Melanoma is an important public health problem, and its incidence is increasing worldwide. The disease status of regional lymph nodes is the most important prognostic factor in early-stage melanoma patients. Sentinel lymph node biopsy (SLNB) was introduced in the early 1990s as a less invasive procedure than complete lymph node dissection to allow histopathologic evaluation of the "sentinel lymph node" (SLN), which is the first node along the lymphatic pathway from a primary tumor. Sentinel lymph node biopsy has minimal complication risks compared with standard complete lymph node dissection...
October 5, 2016: Clinical Nuclear Medicine
Chia-Ju Liu, Hsin-Hsi Tsai, Kuan-Yin Ko, Ching-Chu Lu, Ruoh-Fang Yen
A 68-year-old man with diabetes mellitus type 2 presented himself with visual distortion and apraxia. Nonketotic hyperglycemic seizure with both motor and sensory components was suspected. Tc-ECD perfusion SPECT demonstrated hyperperfusion at right parieto-occipital lobe during ictal phase. Normalization of hyperperfused area was noted on follow-up perfusion SPECT after intense glucose control. In nonketotic hyperglycemic state, the depletion of GABA in cerebral neurons lowers the seizure threshold. We demonstrated that ictal phase perfusion SPECT contributed to not only diagnosis but also served as a follow-up tool...
October 5, 2016: Clinical Nuclear Medicine
Ana Abreu, Helena Santa Clara
Cardiac resynchronization therapy (CRT) is an established treatment for patients with moderate-to-severe chronic heart failure (CHF) and intraventricular conduction delay, which is identified by a QRS interval of 120msec or more on a 12-lead electrocardiogram (ECG). CRT improved functional capacity, reduced hospitalizations for worsening CHF and increased survival. However, about 30-40% of patients who underwent CRT were non-responders with no clinical or echocardiographic improvement. Imaging parameters for prediction of CRT response have been reviewed...
October 14, 2016: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
Mark Doyle, Gerald M Pohost, C Noel Bairey Merz, Leslee J Shaw, George Sopko, William J Rogers, Barry L Sharaf, Carl J Pepine, Diane V Thompson, Geetha Rayarao, Lindsey Tauxe, Sheryl F Kelsey, Robert W W Biederman
BACKGROUND: We introduce an algorithmic approach to optimize diagnostic and prognostic value of gated cardiac single photon emission computed tomography (SPECT) and magnetic resonance (MR) myocardial perfusion imaging (MPI) modalities in women with suspected myocardial ischemia. The novel approach: bio-informatics assessment schema (BIAS) forms a mathematical model utilizing MPI data and cardiac metrics generated by one modality to predict the MPI status of another modality. The model identifies cardiac features that either enhance or mask the image-based evidence of ischemia...
October 2016: Cardiovascular Diagnosis and Therapy
Rene Razzak, Todd McMullen, Eric L R Bédard
We report a case involving a female patient with primary hyperparathyroidism arising from a middle mediastinal parathyroid adenoma. Initial diagnosis was made based on a history of polyuria and recurrent renal colic. At the age of 77 she underwent videoscopic assisted mediastinoscopy (VAM) for resection of the adenoma which was localized using single-photon emission computed tomography (SPECT/CT). This case illustrates the importance for accurate pre-operative localization and intra-operative monitoring to ensure complete surgical removal in order to improve postoperative normocalcemia success rates...
September 2016: Journal of Thoracic Disease
Adam Ali Ghotbi, Andreas Kjaer, Lars Nepper-Christensen, Kiril Aleksov Ahtarovski, Jacob Thomsen Lønborg, Niels Vejlstrup, Kasper Kyhl, Thomas Emil Christensen, Thomas Engstrøm, Henning Kelbæk, Lene Holmvang, Lia E Bang, Rasmus Sejersten Ripa, Philip Hasbak
BACKGROUND: Determining infarct size and myocardial salvage in patients with ST-segment elevation myocardial infarction (STEMI) is important when assessing the efficacy of new reperfusion strategies. We investigated whether rest (82)Rb-PET myocardial perfusion imaging can estimate area at risk, final infarct size, and myocardial salvage index when compared to cardiac SPECT and magnetic resonance (CMR). METHODS: Twelve STEMI patients were injected with (99m)Tc-Sestamibi intravenously immediate prior to reperfusion...
October 14, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Guido Germano, Paul B Kavanagh, Terrence D Ruddy, R Glenn Wells, Yuan Xu, Daniel S Berman, Piotr J Slomka
OBJECTIVES: This paper investigates the ability of grouped quantification (an expression of the same-patient processing approach, or SPP) to improve repeatability of measurements in patients with multiple SPECT studies, and evaluates its performance compared to standard quantification in a population of 100 patients undergoing rest, stress, gated rest, and gated stress SPECT MPI. All acquisitions were performed twice, back-to-back, for a total of 800 image datasets (8 per patient). METHODS: Each dataset was automatically processed (a) independently, using standard quantitative software, and (b) as a group, together with the other 7 datasets belonging to the same patient, using an SPP-modified version of the software that registered the images to one another using a downhill simplex algorithm for the search of optimal translation, rotation, and scaling parameters...
October 14, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Guido Germano, Paul B Kavanagh, Mathews B Fish, Mark H Lemley, Yuan Xu, Daniel S Berman, Piotr J Slomka
OBJECTIVES: This paper describes a novel approach (same-patient processing, or SPP) aimed at improving left ventricular segmentation accuracy in patients with multiple SPECT studies, and evaluates its performance compared to conventional processing in a large population of 962 patients undergoing rest and stress electrocardiography-gated SPECT MPI, for a total of 5,772 image datasets (6 per patient). METHODS: Each dataset was independently processed using a standard algorithm, and a shape quality control score (SQC) was produced for every segmentation...
October 14, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Christoph Wetz, I Apostolova, I G Steffen, F Hofheinz, C Furth, D Kupitz, J Ruf, M Venerito, S Klose, Holger Amthauer
PURPOSE: The purpose of this study was to assess the value of the spatial heterogeneity of somatostatin receptor (SSR) volume, quantified as asphericity (ASP), and to predict response to peptide receptor radionuclide therapy (PRRT) in patients with metastatic gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN). PROCEDURES: From June 2011 to May 2013, patients suffering from GEP-NEN who underwent pretherapeutic [(111)In-DTPA(0)]octreotide scintigraphy (Octreoscan®) prior to [(177)Lu-DOTA(0)-Tyr(3)]octreotate ([(177)Lu]DOTATATE)-PRRT were enrolled in this retrospective evaluation...
October 14, 2016: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
Weibin Zhou, Min Chen
INTRODUCTION: Parathyroid crisis due to ectopic parathyroid adenomas can pose diagnostic and management challenges, since it is quite rare in clinical practice. CLINICAL FINDINGS/PATIENT CONCERNS: A 67-year-old Chinese male presented as a parathyroid crisis due to an ectopic mediastinal parathyroid adenoma with his serum calcium and PTH markedly increased in short time. An ultrasonography and computed tomography (CT) scan of the neck did not reveal any parathyroid adenoma...
October 2016: Medicine (Baltimore)
Robert S Miletich
PURPOSE OF REVIEW: Positron emission tomography (PET) and single-photon emission computed tomography (SPECT) are now available for routine clinical applications in neurology. This article discusses their diagnostic use in dementia, brain tumors, epilepsy, parkinsonism, cerebrovascular disease, and traumatic brain injury. RECENT FINDINGS: Neuromolecular imaging, also known as nuclear neurology, involves clinical imaging of both basal regional physiology (perfusion, metabolism, and transport mechanisms) and specific neurochemical physiology (currently, only the dopamine transporter)...
October 2016: Continuum: Lifelong Learning in Neurology
Samuel Lapalme-Remis, Gregory D Cascino
PURPOSE OF REVIEW: This article discusses structural and functional neuroimaging findings in patients with seizures and epilepsy. The indications for neuroimaging in these patients and the potential diagnostic utility of these studies are presented. RECENT FINDINGS: Patients presenting with new seizures typically require urgent imaging to rule out a critical underlying cause. MRI is the structural neuroimaging procedure of choice in individuals with epilepsy. Specific epilepsy protocols should be considered to increase the diagnostic yield of neuroimaging in patients with structural lesions associated with focal or generalized seizures...
October 2016: Continuum: Lifelong Learning in Neurology
Angela Collarino, Sergi Vidal-Sicart, Germano Perotti, Renato A Valdés Olmos
This review discusses the state-of-the-art of sentinel lymph node mapping in gynaecological malignancies, including cervical cancer, endometrial cancer, and vulvar cancer, with an emphasis on new technological advances. For this objective, PubMed/MEDLINE was searched for relevant studies about the sentinel lymph node procedure in gynaecology. In particular, the use of preoperative lymphatic mapping with lymphoscintigraphy and single photon emission tomography/computed tomography (SPECT/CT) was identified in 18 studies...
2016: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
Stephanie C J M Speth, Roy F P M Kruitwagen, Marjolein Kleppe, Ivo N A Pooters, Toon Van Gorp, Brigitte F M Slangen, Boudewijn Brans
PURPOSE: Tracer injection into ovarian ligaments has been shown to detect sentinel nodes (SNs) in patients with ovarian cancer. To determine the possibility that SNs are missed, this feasibility study compared their detection during surgery with postoperative SPECT/CT. METHODS: In eight patients (either ovarian or endometrial cancer), after a staging lymphadenectomy including resection of SNs related to the ovary, SPECT/CT scans were performed within 24 hours. RESULTS: SPECT/CT identified hotspots in four patients at sites where SNs were resected...
October 13, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
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