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The Latin root word spect and its variant spic both mean "see." These roots are the word origin of a fair number of English vocabulary words, including spectator, respect, auspicious and suspicion.The root spect is easily recalled through the word spectacles, whose function is giving you the ability to "see," and spic is conspicuous, or easily "seen" through, yes, …
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Pre-ablation 131-I SPECT/CT imaging in a 65-year-old-woman with a 1.2 cm papillary thyroid cancer with capsular and vascular invasion, no extra-thyroidal extension, and positive surgical margins; no pathologic evidence for nodal disease (0/3 central nodes submitted); pT1b N0 Mx Stage I. Planar anterior (a) and posterior (b) images depict two …
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This study was performed to evaluate regional wall motion (WM) and wall thickening (WT) using gated myocardial perfusion single photon emission computed …
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Eight patients (40%) were symptomatic and received medications. All patients included in this study underwent a rest and exercise or dipyridamole stress myocardial …
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SPECT/CT studies as an add-on to scintigraphy have been extensively applied to evaluate infectious diseases in various clinical scenarios. These include circumstances that require anatomical landmarks, e.g., when soft-tissue infection has to be differentiated from osseous involvement, in cases in which it is necessary to define all …
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Objective: The purpose of this prospective study was to define the characteristics of rest and stress SPECT studies in patients with known ACM, and whether SPECT may be helpful …
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Pat Morita started his career in the early 1960s as a comedic actor. When it came time to audition for the role of Mr. Miyagi in "The Karate Kid," he was known best for playing Arnold on the retro ...
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Purpose The aim of this study was to investigate the clinical value of coregistration of interictal SPECT and magnetic resonance imaging (MRI) in patients with partial epilepsy. Materials and Methods Seventeen patients with partial epilepsy were examined with I-123 IMP or Tc-99m ethyl cysteinate dimer SPECT during the interictal phase.
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Diagnosis was made with 2-D echo. A rest and exercise or dipyridamole stress SPECT study was performed in all patients with Tc-99m sestamibi.ResultsWe enrolled 20 patients (mean age 60 ± 16 years), 9 were , with ACM. SPECT at rest revealed in 15 patients (75%) an increased apical tracer uptake, a spade-like deformity of the left ...
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Findings suggest that different criteria are required in each segment to evaluate segmental WM and WT by means of gated myocardial perfusion SPECT. BackgroundGlobal and …
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Upper Panel: (A) Rest and stress myocardial perfusion single photon emission computed tomography (SPECT) with motion artifact on stress images, resulting in misalignment of the septum and the lateral wall and producing a "tuning fork" defect ( arrow ). (B) Sinogram of the stress perfusion SPECT images depicting a sharp indentation ( …
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M ATERIALS AND M ETHODS. In this study, the SIMIND (SIMulation of Imaging Nuclear Detectors) Monte Carlo program[18,19] is used to simulate the pixelated CZT SPECT imaging system and to produce the energy spectra.The simulation is performed by considering the contribution of both charge carriers (electron and hole), and by using …
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Purpose The objective of this study was to assess the incremental value of myocardial wall motion and thickening compared with perfusion alone obtained from gated single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) in diagnosing myocardial viability in patients with ischemic heart failure. Methods …
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In view of the commercial success of integrated PET/CT scanners, there is an increasing interest in comparable SPECT/CT systems. SPECT in combination with CT enables a direct correlation of anatomic information and functional information, resulting in better localization and definition of scintigraphic findings. Besides anatomic referencing, the added value of …
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The results obtained in this study with the brain SPECT with 99mTC-TRODAT-1 helped in the differential diagnosis of 153 patients with Parkinsonism. The reduction in striatal DAT uptake on brain SPECT scan with 99mTC-TRODAT-1 was directly related to the severity of motor signs in the synucleinopathies, including PD, expressed …
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It was concluded that multiple hypoperfusion areas were observed in the 3D‐SSP SPECT analysis, and the presence of dementia showed a significant relationship with the …
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However, specificity was significantly higher for DS SPECT than for perfusion SPECT ( vs. 52%, respectively, P < 0.05). Conclusion: This study indicated that DS SPECT correlates well with DSE in the assessment of viability. In addition, gated SPECT can evaluate regional wall motion, even in areas inadequately assessed by echocardiography.
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Purpose To evaluate the feasibility of using the StarGuide (General Electric Healthcare, Haifa, Israel), a new generation multi-detector cadmium-zinc-telluride (CZT)-based SPECT/CT, for whole-body imaging in the setting of post-therapy imaging of 177Lu-labeled radiopharmaceuticals. Methods Thirty-one patients (34–89 years old; mean ± …
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In the past three decades, brain single-photon-emission-computed-tomography (SPECT) imaging has garnered a significant, evidence-based foundation for a wide array of indications relevant to the field of clinical psychiatry, including dementia, traumatic brain injuries, seizures, cerebrovascular disease, complex neuropsychiatric …
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The normal database can serve a standard for nuclear cardiology work conducted in Japan and make known the characteristics of the myocardial perfusion pattern of this population. ObjectiveStandards for myocardial single-photon emission computed tomography (SPECT) adapted for a Japanese population were not available. The …
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In the past three decades, brain single-photon-emission-computed-tomography (SPECT) imaging has garnered a significant, evidence-based foundation for a wide array of indications relevant to the field of clinical psychiatry, including dementia, traumatic brain injuries, seizures, cerebrovascular disease, complex neuropsychiatric …
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WM and WT showed similarity on QGS studies, however, these two parameters may be determined separately in gated SPECT studies for comprehensive and robust evaluation of the functional status of myocardium. This study was performed to evaluate regional wall motion (WM) and wall thickening (WT) using gated myocardial …
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Background In order to acquire accurate drug pharmacokinetic information, which is required for tissue dosimetry, micro-SPECT must be quantitative to allow for an accurate assessment of radioligand activity in the relevant tissue. This study investigates the feasibility of deriving accurate mouse-specific time-integrated drug pharmacokinetic data …
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Differentiated thyroid carcinoma. In patients with differentiated thyroid carcinoma, 131 I-iodide is widely used for therapy, but also for diagnosis and localization of disease. 131 I-iodide whole-body scintigraphy is commonly performed 2–3 days after administration of 123 I-/ 131 I-iodide for a diagnostic scan, and 5–10 days after …
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Methods. PubMed, Embase, and Cochrane Library were searched. Studies used CMR, SPECT and/or PET for the diagnosis of CA were included. Pooled sensitivity, specificity, positive and negative likelihood ratio (LR), diagnostic odds ratio (DOR), their respective 95% confidence intervals (CIs) and the area under the summary receiver …
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This study compared the accuracy of low-dose dobutamine stress gated myocardial SPECT (DS SPECT) with the accuracy of dobutamine stress …
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The IQ single-photon emission computed tomography (IQ-SPECT) system is a new instrument for imaging myocardial perfusion. It is equipped with a dedicated Smart-Zoom collimator for examination of the heart [].The advantages of IQ-SPECT over conventional SPECT include high sensitivity, high spatial resolution, short scan time, a …
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Abstract. Single-photon emission computed tomography with integrated computed tomography (SPECT/CT) systems has been applied in a wide range of clinical circumstances, and differentiated thyroid cancer (DTC) is one of the most important indications of SPECT/CT imaging. In the treatment of DTC, SPECT/CT images have …
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The detector is mounted on the same gantry as the SPECT camera, which allows the acquisition of SPECT and cone-beam CT images. The SPECT images were acquired under a ± 10% main energy window at 140 keV with ⅜″ crystal thickness, a low-energy high-resolution collimator (LEHR), 128 × 128 matrix with 4.8-mm pixels, and 60 …
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Creation and characterization of Japanese standards for myocardial perfusion SPECT: Database from the Japanese Society of Nuclear Medicine Working Group December 2007 Annals of Nuclear Medicine 21 ...
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Purpose. Single-photon emission computed tomography (SPECT) combined with computed tomography (CT) was introduced as a hybrid SPECT/CT imaging …
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SPECT allows the visualization of the distribution of radioactivity within the human body. The modality is widely used for clinical purposes (for more details, see the articles by, e.g., Bockisch et al. [] or Schulthess et al. []).SPECT also holds the promise to exactly quantify the concentration of radioactivity within a given volume in absolute units, …
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Biomarkers are playing a progressively leading role in both clinical practice and scientific research in dementia. Although amyloid and tau biomarkers have gained ground in the clinical community in recent years, neurodegeneration biomarkers continue to play a key role due to their ability to identify different patterns of brain involvement that …
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This book describes fundamental theory and recent advances of sum frequency generation (SFG) spectroscopy. SFG spectroscopy is widely used as a powerful tool of surface characterization, although theoretical interpretation of the obtained spectra has been a major bottleneck for most users. Recent advances in SFG theory have …
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DS SPECT correlates well with DSE in the assessment of viability and can evaluate regional wall motion, even in areas inadequately assessed by echocardiography, which is often overestimated by routine perfusion scans. UNLABELLED The identification of severely dysfunctional but viable myocardium is of particular importance for the selection …
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SPECT/CT frequently uses an acquisition protocol that has a 128 × 128 matrix with a zoom factor of 1.0. The CT protocols for SPECT/CT and PET/CT are described in part E4 of this section ( 5 ). PET/CT MPI. MPI ( 13 N-ammonia or 82 Rb) and myocardial metabolic imaging ( 18 F-FDG) can be performed using PET ( 6 ).
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