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View article: Different Impact of Immunosuppressive Therapy on Cardiac Outcomes in Systemic Versus Isolated Cardiac Sarcoidosis
Different Impact of Immunosuppressive Therapy on Cardiac Outcomes in Systemic Versus Isolated Cardiac Sarcoidosis Open
Isolated cardiac sarcoidosis (iCS) is increasingly recognized; however, its prognosis and the efficacy of immunosuppressive therapy remain undetermined. We aimed to compare the prognosis of iCS and systemic sarcoidosis including cardiac in…
View article: Clinical significance of the combination of preoperative <scp>SUV</scp>max and <scp>CEA</scp> in patients with clinical stage <scp>IA</scp> lung adenocarcinoma
Clinical significance of the combination of preoperative <span>SUV</span>max and <span>CEA</span> in patients with clinical stage <span>IA</span> lung adenocarcinoma Open
Background Preoperative maximum standardized uptake value (SUVmax) of 2‐[18F]‐fluoro‐2‐deoxy‐D‐glucose positron emission tomography and serum carcinoembryonic antigen (CEA) have been reported as prognostic factors for lung adenocarcinoma. …
View article: Continuous Bed Motion in a Silicon Photomultiplier–Based Scanner Provides Equivalent Spatial Resolution and Image Quality in Whole-Body PET Images at Similar Acquisition Times Using the Step-and-Shoot Method
Continuous Bed Motion in a Silicon Photomultiplier–Based Scanner Provides Equivalent Spatial Resolution and Image Quality in Whole-Body PET Images at Similar Acquisition Times Using the Step-and-Shoot Method Open
This study investigated the spatial resolution and image quality of the continuous bed motion (CBM) method in a sensitive silicon photomultiplier (SiPM)-based positron emission tomography (PET)/computed tomography (CT) system compared with…
View article: Impact of Nuclear Factor Erythroid 2–Related Factor 2 in Hepatocellular Carcinoma: Cancer Metabolism and Immune Status
Impact of Nuclear Factor Erythroid 2–Related Factor 2 in Hepatocellular Carcinoma: Cancer Metabolism and Immune Status Open
We examined phosphorylated nuclear factor erythroid 2–related factor 2 (P‐NRF2) expression in surgically resected primary hepatocellular carcinoma (HCC) and investigated the association of P‐NRF2 expression with clinicopathological feature…
View article: Alveolar soft part sarcoma of the orbit: A case report
Alveolar soft part sarcoma of the orbit: A case report Open
Alveolar soft part sarcoma is a rare soft tissue neoplasm that accounts for approximately 1% of all sarcomas and is usually identified in the extremities in adults. The occurrence of alveolar soft part sarcoma in the orbit is extremely rar…
View article: Monte Carlo simulation of the acquisition conditions for <sup>177</sup>Lu molecular imaging of hepatic tumors.
Monte Carlo simulation of the acquisition conditions for <sup>177</sup>Lu molecular imaging of hepatic tumors. Open
177Lu-SPECT images generated via the Monte Carlo simulation suggested that the recommended acquisition time was 6 min or longer at 6 and 24 h and 3 min or longer at 72 h after administration.
View article: Impact of Metabolic Activity in Hepatocellular Carcinoma: Association With Immune Status and Vascular Formation
Impact of Metabolic Activity in Hepatocellular Carcinoma: Association With Immune Status and Vascular Formation Open
We evaluated the prognostic value of fluorine‐18 fluorodeoxyglucose ( 18 F‐FDG) positron emission tomography/computed tomography (PET/CT) in hepatocellular carcinoma (HCC). Their association with programmed death ligand 1 (PD‐L1) expressio…
View article: Obesity is a risk factor for intrahepatic cholangiocarcinoma progression associated with alterations of metabolic activity and immune status
Obesity is a risk factor for intrahepatic cholangiocarcinoma progression associated with alterations of metabolic activity and immune status Open
Body mass index (BMI) is well known to be associated with poor prognosis in several cancers. The relationship between BMI and the long-term outcomes of patients with intrahepatic cholangiocarcinoma (ICC) is incompletely understood. This st…
View article: Estimation of the lower limits for feasible Ra-223 SPECT imaging: a Monte Carlo simulation study.
Estimation of the lower limits for feasible Ra-223 SPECT imaging: a Monte Carlo simulation study. Open
The MEGP collimator is superior in terms of detectability, while the HEGP collimator is superior in terms of quantitative accuracy. When the lesion size is small, the MEGP collimator may be favorable. Based on these results, the estimated …
View article: Impact of Collimator on DaT-SPECT Imaging: Monte Carlo Simulation Study
Impact of Collimator on DaT-SPECT Imaging: Monte Carlo Simulation Study Open
Aim: The purpose of this study was to assess the impact of the collimator in viewing the dopamine transporter, using 123I ioflupane single-photon emission computed tomography (DaT-SPECT) images utilizing a Monte Carlo simulation. Methods: …
View article: The Influence of Minimal Misalignment on the Repeatability of PET Images Examined by the Repositioning of Point Sources
The Influence of Minimal Misalignment on the Repeatability of PET Images Examined by the Repositioning of Point Sources Open
We aimed to evaluate the influence of minimal misalignment of a hot spot on the repeatability of PET images using repositioning of point sources. Methods: Point sources with an inner diameter of 1 mm were made with 1 μL of 18F solution. Se…
View article: Time-of-Flight Information Improved the Detectability of Subcentimeter Spheres Using a Clinical PET/CT Scanner
Time-of-Flight Information Improved the Detectability of Subcentimeter Spheres Using a Clinical PET/CT Scanner Open
Recent advancements in clinical PET/CT scanners have improved the detectability of small lesions. However, the ideal reconstruction parameters for detecting small lesions have not yet been sufficiently clarified. The purpose of this study …
View article: Comparison of TOF-PET and Bremsstrahlung SPECT Images of Yttrium-90: A Monte Carlo Simulation Study.
Comparison of TOF-PET and Bremsstrahlung SPECT Images of Yttrium-90: A Monte Carlo Simulation Study. Open
In almost all the cases examined in this investigation, the quantitative indexes of TOF-PET 90Y images were better than those of Bremsstrahlung SPECT images. However, the superiority of PET image became critical in the case of low activity…
View article: Evaluation of the Reconstruction Parameters of Brain Dopamine Transporter SPECT images Obtained by a Fan Beam Collimator: A Comparison with Parallel-hole Collimators.
Evaluation of the Reconstruction Parameters of Brain Dopamine Transporter SPECT images Obtained by a Fan Beam Collimator: A Comparison with Parallel-hole Collimators. Open
As the findings indicated, the optimal reconstruction parameters differed according to the devices and collimators. The fan beam collimator was found to provide promising results with each device.
View article: Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization.
Characteristics of Smoothing Filters to Achieve the Guideline Recommended Positron Emission Tomography Image without Harmonization. Open
The suitable FWHM for image quality or SUVmax depends on the type of smoothing filter that is applied.
View article: Metabolic characteristics of programmed cell death‐ligand 1‐expressing lung cancer on <sup>18</sup>F‐fluorodeoxyglucose positron emission tomography/computed tomography
Metabolic characteristics of programmed cell death‐ligand 1‐expressing lung cancer on <sup>18</sup>F‐fluorodeoxyglucose positron emission tomography/computed tomography Open
Programmed cell death‐1 ( PD ‐1) and programmed cell death‐ligand 1 ( PD ‐L1) have been identified as novel targets of immunotherapy of lung cancer. In present study, we evaluated the metabolic characteristics of lung cancer by using 18 F‐…
View article: Three-dimensional fractal analysis of 99mTc-MAA SPECT images in chronic thromboembolic pulmonary hypertension for evaluation of response to balloon pulmonary angioplasty
Three-dimensional fractal analysis of 99mTc-MAA SPECT images in chronic thromboembolic pulmonary hypertension for evaluation of response to balloon pulmonary angioplasty Open
3D-FA using Tc-MAA SPECT pulmonary perfusion scintigraphy enables a noninvasive evaluation of the response of CTEPH patients to BPA.
View article: Influence of the Different Primary Cancers and Different Types of Bone Metastasis on the Lesion-based Artificial Neural Network Value Calculated by a Computer-aided Diagnostic System, BONENAVI, on Bone Scintigraphy Images
Influence of the Different Primary Cancers and Different Types of Bone Metastasis on the Lesion-based Artificial Neural Network Value Calculated by a Computer-aided Diagnostic System, BONENAVI, on Bone Scintigraphy Images Open
Objective(s): BONENAVI, a computer-aided diagnostic system, is used in bone scintigraphy. This system provides the artificial neural network (ANN) and bone scan index (BSI) values. ANN is associated with the possibility of bone metastasis,…
View article: Edge Artifacts in Point Spread Function-based PET Reconstruction in Relation to Object Size and Reconstruction Parameters.
Edge Artifacts in Point Spread Function-based PET Reconstruction in Relation to Object Size and Reconstruction Parameters. Open
PSF-based image reconstruction resulted in edge artifacts, the degree of which depends on the pixel size, number of iterations, FWHM of the Gaussian filter, and object size.
View article: Association between volumetric analysis of lung metastases on F-18-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography and short-term progression after i-131 therapy for differentiated thyroid carcinoma
Association between volumetric analysis of lung metastases on F-18-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography and short-term progression after i-131 therapy for differentiated thyroid carcinoma Open
MTVtotal in LMs on F-18 FDG PET/CT is an independent predictive factor with a high predictive value for short-term progression of DTC after initial I-131 therapy. It is recommended that F-18 FDG PET/CT be performed before planning therapy …
View article: Association between Refractoriness to 131I Therapy for Differentiated Thyroid Carcinoma and 18F-FDG Accumulation in Lung Metastasis
Association between Refractoriness to 131I Therapy for Differentiated Thyroid Carcinoma and 18F-FDG Accumulation in Lung Metastasis Open
Background:The purpose of this study was to retrospectively investigate the association between 2-[F-18]-fluoro-2-deoxy-D-glucose ( 18 F-FDG) accumulation in lung metastasis (LM) before 131 I therapy and refractoriness to 131 I therapy for…
View article: The Efficiency of Respiratory-gated <sup>18</sup>F-FDG PET/CT in Lung Adenocarcinoma: Amplitude-gating Versus Phase-gating Methods.
The Efficiency of Respiratory-gated <sup>18</sup>F-FDG PET/CT in Lung Adenocarcinoma: Amplitude-gating Versus Phase-gating Methods. Open
The PG method was more effective for measuring FDG accumulation of lung lesions under free-breathing conditions in comparison with the AG method.