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Gamma Cameras (0):
Recent article
Gamma Cameras
Abstract
Studies of bone remodeling using bone biopsy and biochemical markers of bone turnover play an important role in research studies to investigate the effect of new osteoporosis treatments on bone quality. Quantitative radionuclide imaging using either positron emission tomography with...
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PMID: 21600822
PDF is available here.
PDF is available here.
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Abstract
In patients with lung cancer, FDG PET/CT scan detected more metastatic bone lesions than BS. It also identified bone metastasis in negative BS. In our experience, when the BS was positive and the FDG PET/CT scan was negative, the lesions observed were mostly related with degenerative bone conditions...
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PMID: 21208693
PDF is available here.
PDF is available here.
Abstract
We calculated the coefficients of variation (CVs) of angular and positional differences between the arranged data and the percentage errors between mathematical phantoms and reconstructed images. All ordering schemes showed an order-of-magnitude acceleration over the standard EM, and their computati...
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PMID: 20702926
PDF is available here.
PDF is available here.
Anticancer Research (30)9 2010
Abstract
The aim of this study was to compare the utility of gamma camera using a coincidence detection system imaging (CDET) with 18-fluorodeoxyglucose to conventional imaging techniques in the detection of recurrence of non-small cell lung cancer. Sixty-nine patients were randomized into two groups for fol...
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PMID: 20944175
PDF is available here.
PDF is available here.
Abstract
Arthritis & Rheumatism (62)7 2010
Abstract
Our findings indicate that indocyanine green near-infrared lymphatic imaging is a valuable method for assessing the lymphatic draining function in mice with inflammatory arthritis. Indocyanine green-near-infrared imaging of K/BxN mice identified 2 distinct lymphatic phenotypes during the acute and c...
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PMID: 20309866
PDF is available here.
PDF is available here.
Abstract
This document provides general information about somatostatin receptor scintigraphy with (111)In-pentetreotide. This guideline should not be regarded as the only approach to visualise tumours expressing somatostatin receptors or as exclusive of other nuclear medicine procedures usefu...
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PMID: 20461371
PDF is available here.
PDF is available here.
Abstract
These results are then validated against experimental data. In SPECT, Monte Carlo simulations confirm the merits of the HiSens architecture observed in planar imaging....
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PMID: 20400808
PDF is available here.
PDF is available here.
Abstract
We present the results of the experimental characterization of the DRAGO (DRift detector Array-based Gamma camera for Oncology), a detection system developed for high-spatial resolution gamma-ray imaging. This camera is based on a monolithic array of 77 silicon drift detectors (SDDs), with a total a...
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PMID: 20441357
PDF is available here.
PDF is available here.
Abstract
Of the 21 lesions, seven were malignant, and 14 were benign. Among the 13 subjects with one lesion each, three had positive biopsy results, and 10 had negative biopsy results. Among the four subjects with two lesions, the biopsy results were as follows: bilateral in one, both negative; bilateral in...
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PMID: 20308457
PDF is available here.
PDF is available here.
Health Physics (98)3 2010
Abstract
Enhancements in radiation detection equipment at border crossings and airports resulted in a report to our institution from a Sm-EDTMP therapy patient who was questioned after triggering radiation alarms. Using a clinical SPECT camera in its service mode, gamma-ray spectroscopy was performed on thre...
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PMID: 20147793
PDF is available here.
PDF is available here.
Abstract
We present the preliminary experience at a tertiary care center with early follow-up results of Y-90 therapy, as well as a review of the related literature. MATERIALS AND METHODS: Complete evaluation for radioembolization was performed in 10 patients (8 males, 2 females; mean age, 52.3 years) during...
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PMID: 20180183
PDF is available here.
PDF is available here.
Abstract
All phantom images from 180 degrees acquisitions contained some degree of distortion at the periphery, but clearly retain the presence of centrally positioned caudate and putamen; hence 180 degrees acquisitions were deemed to produce clinically useful diagnostic images. The shorter (half) acquisitio...
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PMID: 20032802
PDF is available here.
PDF is available here.
Acta Chirurgica Belgica (110)4 2010
Abstract
There were no differences in the complication rates, surgical time, anaesthesia time or mean length of hospital stay between the groups. However, total hospital charges were more favourable in the MISGE group with a mean saving of $400 per case. CONCLUSION: This study demonstrates that with the addi...
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PMID: 20919670
PDF is available here.
PDF is available here.
Bratislavske lekarske listy (111)1 2010
Radionavigated detection of sentinel nodes in breast carcinoma--first experiences of our department.
Abstract
From May 2006 to June 2008, we examined 61 patients with breast carcinoma. They underwent radionavigated and blue-dye sentinel node biopsy. We detected 57 (93.4%) sentinel nodes with preoperative scintigraphy, of which only 51 (83.6%) were detected peroperatively and underwent histological evaluatio...
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PMID: 20429309
PDF is available here.
PDF is available here.
Abstract
Imaging using positron emission tomography (PET) in the field of nuclear medicine is becoming increasingly important. The aim of this study was to develop a method for labeling of affibody molecules with radiocobalt for PET applications.
The human epidermal growth fac...
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PMID: 19557480
PDF is available here.
PDF is available here.
Abstract
Molecular breast imaging (MBI) is a new nuclear medicine technique that utilizes small semiconductor-based gamma-cameras in a mammographic configuration to provide high-resolution functional images of the breast. Current studies with MBI have used Tc-99m sestamibi, which is an approved agent for bre...
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PMID: 19671027
PDF is available here.
PDF is available here.
Abstract
Substantial efficiencies have occurred over the decade thereby increasing productivity, but whether staffing levels are appropriate for safe, high quality practice is unclear. Future staffing adequacy is of concern given the anticipated increasing service needs....
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PMID: 19619358
PDF is available here.
PDF is available here.
Abstract
By using this technique two cases of dyshormonogenesis were identified. CONCLUSION: The gamma-camera-based perchlorate discharge test is an easy, reliable, convenient, and feasible procedure where thyroid uptake probe is not available....
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PMID: 19430323
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Abstract
With Single Photon Emission Computed Tomography (SPECT), images of minute concentrations of tracer molecules can be acquired, allowing in vivo molecular imaging. For human imaging, the SPECT system has a modest spatial resolution of 5-15 mm, a large field of view and a high sensitivi...
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PMID: 19328232
PDF is available here.
PDF is available here.
Medical Physics (36)6 2009
Abstract
An alternative to the conventional method of performing the AAPM Report 52 rotational uniformity and sensitivity test has been developed. In contrast to the conventional method in which a Co-57 sheet source is fastened to the collimator, this new point-source method acquires the images intrinsically...
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PMID: 19610283
PDF is available here.
PDF is available here.
Abstract
The response rate to the survey from the 21 nuclear medicine departments in Scotland was 100%. During 2004/2005, there were 71 426 nuclear medicine procedures carried out in Scotland, just over 14 per 1000 of population. A mean of 1619 procedures per imager was found. The mean number of procedures p...
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PMID: 19252452
PDF is available here.
PDF is available here.
Abstract
Sixty-one observers, with an experience of approximately five or more 99mTc-DMSA/month, contributed to the study. Median agreement was 93%. The agreement was less than 80% in 29 kidneys (24%) but only in 13% (16 kidneys) was there disagreement between normality and abnormality, the remaining cases b...
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PMID: 19252455
PDF is available here.
PDF is available here.
Medical Physics (36)4 2009
Abstract
The authors report on the performance of two small field of view, compact gamma cameras working in single photon counting in planar imaging tests at 122 and 140 keV. The first camera is based on a LaBr3: Ce scintillator continuous crystal (49 x 49 x 5 mm3) assembled with a flat panel multianode phot...
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PMID: 19472638
PDF is available here.
PDF is available here.
Abstract
The dose of inhaled radiolabeled aerosols is usually assessed using gamma (GC) camera imaging. Because of the complex and inhomogeneous structure of the lung, consisting of soft tissue, the thoracic skeleton, blood vessels, and air spaces, proper attenuation correction coefficients are difficult to...
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PMID: 18844481
PDF is available here.
PDF is available here.
Abstract
We also wanted to see if the clinical application type could be effective to detect sentinel nodes in simulation studies for sentinel lymph node biopsy. The camera head consisted of a pixelized CdTe module (32 x 32 individual elements, total of 1,024 pixels) (Acrorad Co. Ltd., Tokyo, Japan). The fie...
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PMID: 19413190
PDF is available here.
PDF is available here.
Abstract
We have developed a fast analytic scintillation detection algorithm that makes use of a depth-dependent light spread model and as a result is able to estimate the DOI in the scintillator. This algorithm, performing multi-scale frame analysis, was tested for an electron multiplying CCD (EM-CCD) optic...
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PMID: 19141886
PDF is available here.
PDF is available here.
Abstract
We analyzed the Time Activity Curve on a RAO image selected from raw data acquired using dynamic SPECT. A comparison of images obtained in this manner with analytical data from frontal images indicated that positioning the gamma camera at 30 degrees at RAO, can capture more radioisotope counts than...
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PMID: 19246859
PDF is available here.
PDF is available here.
Abstract
Current Eye Research (34)1 2009
Abstract
The radio-chemical purity of labeled ofloxacin was found to be 90-95% with the labeling efficiency of 90%. The static anterior planar images of verapamil pre-treated group showed marginal increase in the uptake of labeled ofloxacin, and dynamic images showed less systemic pool as compared to its con...
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PMID: 19172473
PDF is available here.
PDF is available here.
Nuklearmedizin (48)4 2009
Abstract
The field of view of the detector system was 13.8 cm, which is appropriate for the monitoring, since the area to be controlled was the precordial zone. The sensitivity of the system was 257 cps/MBq. When the percentage of leakage reaches 10% the associated absolute error is +/-1%. After a mean follo...
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PMID: 19488461
PDF is available here.
PDF is available here.
Nuklearmedizin (48)5 2009
Abstract
Abstract
GPI is a relatively simple and effective technique that may help maximize parathyroid preservation....
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PMID: 19095112
PDF is available here.
PDF is available here.
Abstract
We evaluated these organ doses to determine the normal tissues most likely at risk for stochastic and deterministic effects associated with (131)I therapy for thyroid cancer and benign disease. Our results represent preliminary findings, and the study will continue to accrue a greater number of stud...
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PMID: 19111047
PDF is available here.
PDF is available here.
Abstract
Quaternized tropinol ester derivatives of some commonly used non-steroidal anti-inflammatory drugs (NSAIDs) or their active metabolites, were prepared and studied for their anti-inflammatory activity in a chronic inflammation model and for inflamed tissue tropism. The quaternized esters were radiolab...
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PMID: 18842419
PDF is available here.
PDF is available here.
Abstract
All four CT-based methods for the calculation of split renal function showed correlation with no significant difference from radionuclide renography (p > 0.05, Student's t test). Pearson's correlation coefficients varied from 0.36 to 0.63 (p < 0.001 for each). Difference scores revealed that the exc...
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PMID: 18941100
PDF is available here.
PDF is available here.
Abstract
MBI can detect invasive ductal carcinoma, ductal carcinoma in situ, and invasive lobular carcinoma. It has a promising role in evaluating the extent of disease and multifocal disease in the breast for surgical treatment planning....
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PMID: 18723155
PDF is available here.
PDF is available here.
Abstract
We describe the combined use of diagnostic preoperative 18F-fluorodeoxyglucose positron emission tomography-computed tomography, intraoperative 18F-fluorodeoxyglucose handheld gamma probe detection, and immediate postoperative 18F-fluorodeoxyglucose positron emission tomography-computed tomography p...
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PMID: 18805196
PDF is available here.
PDF is available here.
Abstract
60% patients showed absence of inducible ischaemia on MPI, and hence further invasive procedures like angiography were prevented, 40% showed inducible ischaemia and had to be further evaluated and required intervention. Of all 121 patients, 10% had LV systolic and diastolic dysfunction whereas 66% h...
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PMID: 19263701
PDF is available here.
PDF is available here.
Journal of Urology (180)4 2008
Abstract
These findings suggest that the artifactual supranormal differential renal function that is observed during renographic evaluation of large hydronephrotic kidneys actually exists. Parenchymal proximity and distribution in relation to the pelvis are critical determinants. These findings suggest that...
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PMID: 18710764
PDF is available here.
PDF is available here.
Abstract
The response functions of a 7.62 x 7.62 cm NaI(Tl) scintillation detector to photons from point gamma-ray sources, 10 cm from the scintillator surface, in the energy up to 1.5 MeV, were calculated using the Monte Carlo method, applying simple approximations based on the peak to total ratio and the d...
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PMID: 18486481
PDF is available here.
PDF is available here.
Abstract
Twelve fractures were identified in the group who underwent planar scintigraphy alone and 13 in the group who underwent planar scintigraphy with SPECT. The sensitivities of planar scintigraphy alone and with SPECT were 50% and 92.3%, respectively (p = 0.03). The accuracy of each technique for the de...
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PMID: 18806135
PDF is available here.
PDF is available here.
Medical Physics (35)10 2008
Abstract
A quality assurance system has been designed to verify the location and strength of seeds loaded in a brachytherapy eye plaque. This system consists of (1) a pinhole camera in conjunction with a Lumisys ACR-2000i computed radiography (CR) unit to image the location and measure the relative strength...
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PMID: 18975677
PDF is available here.
PDF is available here.
Abstract
The study demonstrates the high efficiency of a pulsating airflow in paranasal sinus ventilation and aerosolized drug delivery. This proves that topical drug delivery to the paranasal sinuses in relevant quantities is possible....
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PMID: 18853874
PDF is available here.
PDF is available here.
Abstract
In both the groups, SMBF in tibialis anterior muscle changed similarly with values at the same levels. In contrast, SMBF in GCM showed marked difference between the two groups: in rugby players, SMBF in GCM returned to the baseline level (6.5+/-1.7, n=10) immediately after treadmill exercise, wherea...
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PMID: 18677203
PDF is available here.
PDF is available here.
Abstract
We characterized the scintillation probes in a series of in vitro experiments to optimize the accuracy of the measurement setup. The scintillation probes were found to have a strong geometric dependence and experience saturation effects at high activities. In vitro simulation of 4 subcutaneous limb...
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PMID: 18554743
PDF is available here.
PDF is available here.
Abstract
A total number of 31 lesions from SCLC with a thoracic (n=13) or extrathoracic location (n=18) were all positive on FDG PET/CT. Coregistration of the gamma camera to the CT demonstrated targeting of antibody to all lesions >2 cm (n=20) and in a few lesions < or =2 cm (n=2), with no visualization of...
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PMID: 17714905
PDF is available here.
PDF is available here.
Abstract
The probe is particularly useful in confirming the presence of hyperfunctional parathyroids after resection. It also is useful in identifying ectopic localizations, but its value is limited in guiding surgery for secondary or tertiary disease....
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PMID: 18436177
PDF is available here.
PDF is available here.
Abstract
LumaGEM scintigraphy revealed 9 of 11 malignancies, sized 6-20 mm. Two lesions in patients with multicentric disease were not diagnosed, one of which measured only 2.5 mm. In one patient, the procedure was inconclusive, due to major breast hypertrophy. CONCLUSION: The combined use of NC100629 and a...
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PMID: 18384623
PDF is available here.
PDF is available here.
Abstract
We have used photon-counting scintillation imaging (PCSI) to map and quantify nutrient allocation and localised growth simultaneously in heterogeneous resource environments. We show that colonies spontaneously shift to an asymmetric growth pattern, even in the absence of added resources, often with...
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PMID: 18467134
PDF is available here.
PDF is available here.
Oncology Reports (20)1 2008
Abstract
The aim of this study was to evaluate the clinical value of 18-fluorodeoxyglucose (FDG) imaging with gamma-camera positron emission tomography (GCPET) equipped with a one-inch crystal for diagnosing lung lesions and determining the stage of non-small cell lung cancer (NSCLC) in regions with a high p...
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PMID: 18575734
PDF is available here.
PDF is available here.
Abstract
Preoperative LS with radiocolloids, intraoperative lymphatic mapping with blue dye and gamma probe are all feasible methods comparable with each other for SLN detection in early stage cervical cancer patients, but gamma probe is the most useful method in terms of technical success....
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PMID: 18670855
PDF is available here.
PDF is available here.