Three-dimensional evaluation of skeletal and dental changes in patients with skeletal class III malocclusion and facial asymmetry after surgical-orthodontic treatment.
This study included forty adult patients diagnosed with skeletal Class III malocclusion and asymmetry who underwent either isolated mandibular surgery or bimaxillary surgery. CBCT scans were taken before treatment (T0), at the completion of presurgical orthodontic treatment (T1) and after treatment (T2). Mimics 17.0 and 3-Matics 7.0 were used to measure skeletal and dental parameters. Skeletal and dental changes within each group from pretreatment to posttreatment were assessed, and Pearson correlation analysis was used to analyze the correlations among skeletal changes. RESULTS: The three-dimensional changes in condyl...
Source: Journal of X-Ray Science and Technology - May 18, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Dosimetric measurement of scattered radiation for simulated head and neck radiotherapy with homemade oral phantom.
Authors: Li KL, Lin JP, Chen YC, Lu CC Abstract During radiotherapy for head and neck tumours, the oral cavity and cheek area would be inevitably exposed to high energy radiation; thus, the material surface of the teeth, dental restorations with high atomic number, or alloy prosthodontics would generate backscatter electrons that cause the buccal mucosa adjacent to these materials to receive localized high dose enhancement, which primarily leads to side effects or oral mucositis. Based on the size of the adult oral cavity, this study aimed to use acrylic resin to create an oral phantom with two grooves on the left ...
Source: Journal of X-Ray Science and Technology - May 18, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Dosimetric evaluation of PASSAG-U polymer gel dosimeter: Dependence of dose rate and photon energy.
CONCLUSIONS: The study results demonstrated that dosimetric characteristics (dependence of dose rate and photon energy, and dose resolution) of PASSAG-U gel dosimeter with 3% were better than those of PASSAG-U gel dosimeter with 5% urea. PMID: 32390644 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - May 12, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

A reference architecture for plausible Threat Image Projection (TIP) within 3D X-ray computed tomography volumes.
CONCLUSION: Qualitative evaluations on real 3D CT baggage imagery show that our approach is able to generate realistic and plausible TIP which are indiscernible from real CT volumes and the TIP quality scores are consistent with human evaluations. PMID: 32390645 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - May 12, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Breast cancer pathological image classification based on deep learning.
Authors: Hou Y Abstract The automatic classification of breast cancer pathological images has important clinical application value. However, to develop the classification algorithm using the artificially extracted image features faces several challenges including the requirement of professional domain knowledge to extract and compute highiquality image features, which are often time-consuming, laborious, and difficult. For overcoming these challenges, this study developed and applied an improved deep convolutional neural network model to perform automatic classification of breast cancer using pathological images. S...
Source: Journal of X-Ray Science and Technology - May 12, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

A review of airport dual energy X-ray baggage inspection techniques: image enhancement and noise reduction.
Authors: Khan SU, Khan IU, Ullah I, Saif N, Ullah I Abstract In this paper, we present a review of the research literature regarding applying X-ray imaging of baggage scrutiny at airport. It discusses multiple X-ray imaging inspection systems used in airports for detecting dangerous objects inside the baggage. Moreover, it also explains the dual energy X-ray image fusion and image enhancement factors. Different types of noises in digital images and noise models are explained in length. Diagrammatical representations for different noise models are presented and illustrated to clearly show the effect of Poisson and I...
Source: Journal of X-Ray Science and Technology - May 12, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Review of CT image reconstruction open source toolkits.
Authors: Shi L, Liu B, Yu H, Wei C, Wei L, Zeng L, Wang G Abstract Computed tomography (CT) has been widely applied in medical diagnosis, nondestructive evaluation, homeland security, and other science and engineering applications. Image reconstruction is one of the core CT imaging technologies. In this review paper, we systematically reviewed the currently publicly available CT image reconstruction open source toolkits in the aspects of their environments, object models, imaging geometries, and algorithms. In addition to analytic and iterative algorithms, deep learning reconstruction networks and open codes are al...
Source: Journal of X-Ray Science and Technology - May 12, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Combining ultrasonography and mammography to improve diagnostic accuracy of plasma cell mastitis.
Authors: Hu J, Huang X Abstract OBJECTIVE: To evaluate the diagnostic value of ultrasonography and mammography for plasma cell mastitis. METHODS: The ultrasonographic and mammographic images of 111 women with histopathologically confirmed plasma cell mastitis were retrospectively analyzed. The diagnostic accuracy of the two imaging methods was compared. RESULTS: Ultrasonography identified 91 out of 111 (82.0%) patients with plasma cell mastitis, while the other twenty (18.0%) patients were misdiagnosed. Mammography identified 83 (74.8%) out of 111 patients with plasma cell mastitis. Nineteen (17.1%) patient...
Source: Journal of X-Ray Science and Technology - April 27, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Qualitative and quantitative image analysis of 16  cm wide-coverage computed tomography compared to new-generation dual-source CT.
This study aims to compare the performance of 16 cm wide-coverage detector CT (WDCT) using the snapshot freeze technique with a new-generation dual-source CT (DSCT) with 66 ms temporal resolution for CCTA. METHODS: Total 101 patients with suspected coronary heart disease were enrolled. Of these, 50 and 51 patients were examined on WDCT and DSCT, respectively. CT values, image noise, signal-to-noise ratio, and contrast-to-noise ratio were measured. The image processing efficiency was recorded, followed by statistical comparison of diagnostic accuracy and radiation dose. RESULTS: Ninety-nine patients (98.02%) had...
Source: Journal of X-Ray Science and Technology - April 27, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Dedicated cone-beam breast CT using laterally-shifted detector geometry: Quantitative analysis of feasibility for clinical translation.
CONCLUSIONS: Laterally-shifted detector CBBCT with at least 220 pixels overlap in conjugate views (24.1×30 cm detector format) provides quantitatively accurate and artifact-free image reconstruction. PMID: 32333575 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - April 27, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

An adaptive pulmonary nodule detection algorithm.
Authors: Cao K, Meng G, Wang Z, Liu Y, Liu H, Sun L Abstract Recently, lung cancer has been paid more and more attention. People have reached a consensus that early detection and early treatment can improve the survival rate of patients. Among them, pulmonary nodules are the important reference for doctors to determine the lung health. With the continuous improvement of CT image resolution, more suspected pulmonary nodule information appears from the impact of chest CT. How to relatively and accurately locate the suspected nodule location from a large number of CT images has brought challenges to the doctor's daily...
Source: Journal of X-Ray Science and Technology - April 27, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Clinical and computed tomographic (CT) images characteristics in the patients with COVID-19 infection: What should radiologists need to know?
CONCLUSION: There were some typical CT features for diagnosis of COVID-19 pneumonia. The radiologists should know these CT findings and clinical information, which could help for accurate analysis in the patients with 2019 novel coronavirus infection. PMID: 32280076 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - April 15, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

The clinical study of en Bloc transurethral resection with 980  nm Laser for treatment of primary non-muscle invasive bladder cancer.
CONCLUSION: En bloc transurethral resection using 980 nm laser is an effective and safe treatment option for non-muscle-invasive bladder cancer. Compared to the traditional TUR-Bt procedure, the procedure using 980 nm laser has fewer perioperative complications and similar oncological results. PMID: 32224536 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - April 1, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Three-dimensional printing - assisted planning for complete and safe resection of  retroperitoneal tumor.
Three-dimensional printing - assisted planning for complete and safe resection of retroperitoneal tumor. J Xray Sci Technol. 2020 Mar 18;: Authors: Sun G, Ding B, Yu G, Chen L, Wang Z, Wang S, Chen X Abstract BACKGROUND: Surgery is usually recommended to treat retroperitoneal tumors. However, complete surgical resections often remain challenging. OBJECTIVE: To assess the assistant role of three-dimensional (3D) imaging and printing model in retroperitoneal tumor resection, as well as compare the difference between 3D printing and computed tomography (CT) in preoperative planning and confidence...
Source: Journal of X-Ray Science and Technology - March 23, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Automatic left ventricle segmentation from cardiac magnetic resonance images using a capsule network.
CONCLUSIONS: The evaluation metrics of medical image segmentation indicate that the proposed method in combination with postprocessing and feature detection effectively improves segmentation accuracy for cardiac MRI. To the best of our knowledge, this study is the first to use a deep learning model based on capsule networks to systematically evaluate end-to-end LV segmentation. PMID: 32176675 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - March 18, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Radiomics study for predicting the expression of PD-L1 in non-small cell lung cancer based on CT images and clinicopathologic features.
CONCLUSION: The prediction model that incorporates the radiomics signature and clinical risk factors has potential to facilitate the individualized prediction of PD-L1 expression in NSCLC patients and identify patients who can benefit from anti-PD-L1 immunotherapy. PMID: 32176676 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - March 18, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Assessment of an in-house phantom for the quality control of a clinical gamma camera.
CONCLUSION: This work demonstrates that in-house phantoms are capable of monitoring gamma camera performance. This approach is particularly useful when scientific support is not easily accessible and when commercial phantoms are not readily available. PMID: 32145008 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - March 9, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Radiomics analysis of multicenter CT images for discriminating mucinous adenocarcinoma from nomucinous adenocarcinoma in rectal cancer and comparison with conventional CT values.
CONCLUSION: This study demonstrated that CT radiomics features could be utilized as a noninvasive biomarker to identify MA patients from NMA of rectal cancer preoperatively, which is more accurate than using the conventional CT values. PMID: 32116286 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - March 3, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Optimize non-contrast head CT imaging tasks using multiple virtual monochromatic image sets in dual-energy spectral CT.
Authors: Li X, Li Z, Li J, Song J, Yu Y, Liu B Abstract OBJECTIVE: To demonstrate the value of optimizing non-contrast head imaging tasks by using the multiple virtual monochromatic spectral imaging (VMSI) sets in dual-energy spectral computed tomography (CT) and determine the optimal energy levels for various tasks in imaging head. MATERIALS AND METHODS: This retrospective study includes 55 patients (29 women and 26 men, average age of 54.5±12.3years) who underwent non-contrast head CT in spectral imaging mode. For each patient, 21 VMSI sets from 40 to 140 keV at 5 keV intervals and 120 kVp-like i...
Source: Journal of X-Ray Science and Technology - March 3, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Comparison of the clinical effectiveness of ultrasound-guided corticosteroid injection with and without needle release of the A1 pulley in treating trigger finger.
Authors: Wu YY, He FD, Chen K, Quan JR, Guo XY Abstract OBJECTIVE: To compare the clinical effectiveness of ultrasound-guided corticosteroid injection with and without needle release of the A1 pulley in treating trigger finger. METHODS: A total of 60 patients with trigger finger were enrolled in this retrospective study. Among them, 30 patients were treated with ultrasound-guided needle release of the A1 pulley with corticosteroid injection (group A) and 30 patients were treated with single ultrasound-guided corticosteroids injection (group B). The following parameters were evaluated including clinical paramete...
Source: Journal of X-Ray Science and Technology - March 3, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

A primary analysis on measuring repeatability of the maximum diameter between CT and MR imaging for lung cancers.
CONCLUSIONS: For peripheral lung cancer, the measurement on CT and routine MRI sequences can potentially replace each other after comprehensive consideration of examination purposes, but for central lung cancer, alternative use of CT and MRI in evaluating treatment responses for lung cancer should needs extra attention. The diameter measurement of lung cancer on DWI is consistent with that on T1WI and T2WI, suggesting that DWI can provide functional and morphological information. PMID: 32083610 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - February 22, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Directional weighted spatial fuzzy C-means for segmentation of brain MRI images.
Authors: Khan SU, Ullah I, Ahmed I, Imran A, Ullah N PMID: 32083611 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - February 22, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Association between magnetic resonance imaging of carotid artery and coronary stenosis detected by computed tomography angiography.
Authors: Chen SY, Wu WF, Di C, Zhao XX Abstract OBJECTIVE: To investigate the correlation between carotid artery stenosis (CAS) measured by magnetic resonance imaging (MRI) and the coronary stenosis (CS) determined by computed tomography angiography (CTA). METHODS: In this prospective study, 42 subjects diagnosed with coronary artery disease (CAD) underwent MRI and CTA examinations. The severity degree and number of CAS, the score, detection rate and type of carotid plaque, and also the severity degree and number of CS were assessed. Spearman's rank correlation test was used to evaluate the correlation between ...
Source: Journal of X-Ray Science and Technology - February 20, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

A quality improvement method for lung LDCT images.
CONCLUSIONS: Comparing with the results of other methods tested using the same dataset, this study demonstrated that our new method significantly improved quality of the lung LDCT images. PMID: 32039881 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - February 11, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Challenges in the diagnosis of severe renal trauma in child: A case report and literature review.
We present and discuss the clinical characteristics and radiologic features of the patient. PATIENTS AND METHODS: A 10 years old child was admitted for serious blunt renal trauma formed a huge urinoma in the right renal after injury gradually in 2018. We treated the patient with synchronous percutaneous nephrostomy drainage and retrograde ureteral catheterization. A retrospective review was performed of this case, including the clinical features, imaging studies and short-term follow-up. A literature review was also performed to highlight the principals of diagnosis and treatment of severe blunt renal trauma in childre...
Source: Journal of X-Ray Science and Technology - February 11, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Region growing algorithm combined with morphology and skeleton analysis for segmenting airway tree in CT images.
CONCLUSIONS: The results show that our method is accurate for pulmonary airway tree segmentation. The strategy of separating the leakage detection from the segmenting process is feasible and promising for ensuring a high branch detected rate with a low leakage volume. PMID: 32039883 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - February 11, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Breast microcalcifications detection based on fusing features with DTCWT.
CONCLUSIONS: The proposed model combined with DTCWT features achieves better result in the automatic extraction of ROI. Moreover, in the subsequent detection of microcalcifications based on three methods, the three methods achieved better results in sensitivity and false positive detection rate, respectively. PMID: 31985483 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - January 29, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Spatial resolution improvement of 450  kV computed tomography via vertical subpixel detector shifting.
Spatial resolution improvement of 450 kV computed tomography via vertical subpixel detector shifting. J Xray Sci Technol. 2020 Jan 22;: Authors: Lifton J, Liu T Abstract The 450 kV X-ray sources typically have large focal spot sizes that lead to low spatial resolution of the computed tomography (CT) images. This work developed and tested a new method to improve spatial resolution of CT images generated using the 450 kV X-ray sources. The proposed method relies on using the vertical subpixel detector shifting and deconvolution to generate a projection-set that has double the number of pixels in th...
Source: Journal of X-Ray Science and Technology - January 29, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Changes of the upper airway and bone in microimplant-assisted rapid palatal expansion: A cone-beam computed tomography (CBCT) study.
Authors: Yi F, Liu S, Lei L, Liu O, Zhang L, Peng Q, Lu Y Abstract OBJECTIVE: To evaluate the changes of maxillary expansion and upper airway structure after microimplant assisted rapid palatal expansion (MARPE) using cone-beam computed tomography (CBCT). METHODS: This retrospective study included 19 subjects (15 females and 4 males) aged 15-29 years old (mean, 19.95±4.39 years) with maxillary transverse deficiency treated with MARPE. CBCT was performed at the initial diagnosis and 3 months after MARPE treatment. Measurements were taken to evaluate the amount of total expansion, skeletal expansion, and d...
Source: Journal of X-Ray Science and Technology - January 29, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Evaluation of geometrical uncertainties on  localized prostate radiotherapy of patients with bilateral metallic hip prostheses using 3D-CRT, IMRT and VMAT: A planning study.
CONCLUSION: For radiotherapy treatment of localized prostate cancer in patients with hip prosthesis, the dose distribution was better in the VMAT and MAR- CT image methods than the conventional methods. Because the anatomical structure of the male pelvic region is relatively constant among individuals, we consider that VMAT is a valid treatment plan despite analyzing just three cases. PMID: 31985486 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - January 29, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

High penetration x-ray communication under physical shielding.
CONCLUSIONS: As a new wireless optical communication technology, X-ray communication is expected to solve the problem of signal transmission under physical shielding conditions. PMID: 31929130 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - January 15, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Assessment of an Elekta Versa HD linear accelerator for stereotactic radiosurgery with circular cone collimators.
Authors: Zhang M, Fan Q, Lei Y, Thapa B, Padula G Abstract BACKGROUND: Versa HD linear accelerators (linacs) are used for stereotactic radiosurgery treatment. However, the mechanical accuracy of such systems remains a concern. OBJECTIVE: The purpose of this study was to evaluate the accuracy of an Elekta Versa HD linac. METHODS: We performed measurements with a ball bearing phantom to calculate the rotational isocenter radii of the linac's gantry, collimator, and table, and determine the relative locations of those isocenters. We evaluated the accuracy of the cone-beam computed tomography (CBCT) guidance wi...
Source: Journal of X-Ray Science and Technology - January 8, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Dosimetric comparison of artificial walls of bladder and rectum with real walls in common prostate IMRT techniques: Patient and monte carlo study.
Authors: Gorji KE, Sadat-Mirkazemi M, Banaei A, Abedi-Firouzjah R, Afkhami-Ardekani M, Ataei G Abstract BACKGROUND: Rectum and bladder are hallow structures and considered as critical organs in prostate cancer intensity modulated radiotherapy (IMRT). Therefore, dose received by these organ walls must be considered for prediction of radiobiological effects. Contouring the real organ walls is quite difficult and time consuming in CT/MRI images, so the easy contouring artificial walls with uniform thickness could be appropriated alternatives. OBJECTIVE: To compare reconstructed artificial walls with real walls of ...
Source: Journal of X-Ray Science and Technology - January 8, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Extended-field bone marrow sparing radiotherapy for primary chemoradiotherapy in cervical cancer patients with para-aortic lymphadenopathy: Volumetric-modulated Arc Therapy Versus Helical Tomotherapy.
Authors: Chen JL, Wang MC, Huang YS, Huang CY, Pan CK, Hsu CY, Lan KH, Kuo SH Abstract BACKGROUND: Extended-field (EF) bone marrow-sparing (BMS) radiotherapy is attracting interest for cervical cancer patients with para-aortic lymphadenopathy. OBJECTIVE: To compare dosimetric quality of volumetric-modulated arc therapy (VMAT) vs. helical tomotherapy (HT) during EF BMS radiotherapy. METHODS: HT dose-volume histogram parameters including (1) coverage, homogeneity, and conformity of target volumes, (2) sparing of organs-at-risk, (3) monitor units, and (4) estimated treatment time were compared with those of VM...
Source: Journal of X-Ray Science and Technology - January 8, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research

A similarity measure method fusing deep feature for mammogram retrieval.
CONCLUSIONS: We propose a similarity measure method fusing deep feature, content feature, and location feature. The retrieval results show that the precision and recall of this method have obvious advantage, compared with the content-based image retrieval and location-based image retrieval. PMID: 31868727 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - December 25, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

An improved method for quantitative recovery of conductivity using tomographically measured thermoacoustic data.
Authors: Zheng Z, Jiang Y, Huang L, Zhao Y, Jiang H Abstract Noninvasive extraction of tissue conductivity distribution is important in brain imaging and cancer detection. Here we present an improved method that can accurately image tissue conductivity using tomographically measured microwave-induced thermoacoustic data. Our reconstruction algorithm is first tested using simulations, and then validated using tissue phantom experiments where saline-containing tubes are used as target(s) with various target sizes, positions and conductivities. The average error of reconstruction for the simulations is reduced from 4....
Source: Journal of X-Ray Science and Technology - December 25, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Improving brain tumor segmentation on MRI based on the deep U-net and residual units.
CONCLUSIONBy extending the U-net model to a deeper layer and adding the residual structure to ensure effective and stable training of the model, the experiment results demonstrate that applying the improved Deeper ResU-net can effectively eliminate the degradation phenomenon of deep network and improve segmentation performance. PMID: 31839620 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - December 17, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Application of ultrasound fusion imaging technique for unilateral percutaneous vertebroplasty in treatment of osteoporotic thoracolumbar compression fracture.
CONCLUSIONS: Real-time CT-ultrasound fusion imaging is easy to perform, and provides precise localization of the puncture point, path, and target point. The selected puncture path was reasonable, and the needle had reached the target point accurately, which increased the success rate of puncture without radiation exposure. PMID: 31815726 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - December 10, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Research progress of computer aided diagnosis system for pulmonary nodules in CT images.
CONCLUSIONS: We summarized the current tendency and limitations as well as future challenges in this field. The development of CAD needs to meet the rigid clinical requirements, such as high accuracy, strong robustness, high efficiency, fine-grained analysis and classification, and to provide practical clinical functions. This review provides helpful information for both engineering researchers and radiologists to learn the latest development of CAD systems. PMID: 31815727 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - December 10, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Characterization of breast lesions using diffusion kurtosis model-based imaging: An initial experience.
Authors: Zhou WP, Zan XY, Liu X, Sudarshan SKP, Yang SD, Fang XM, Guo YJ, Hu XY Abstract OBJECTIVE: To investigate the characterization of breast lesions using diffusion kurtosis model-based imaging. METHODS: This prospective study included 120 consecutive patients underwent preoperative DCE-MRI examinations and multi-b-value diffusion-weighted imaging (DWI). Among them, 88 malignant lesions and 44 benign lesions were detected, 56 normal fibroglandular breast tissue were selected as normal control. Conventional apparent diffusion coefficient (ADC), DKI-based parameters mean kurtosis (MK) and mean diffusivity (M...
Source: Journal of X-Ray Science and Technology - December 10, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Minimally invasive management of acute ureteral obstruction and severe infection caused by upper urinary tract calculi.
CONCLUSIONThis study demonstrated an optimal approach for relieving upper urinary tract obstruction and acute infection in which percutaneous nephrostomy drainage is preferred for patients with severe pyonephrosis, large stones (>10 mm) with high-grade hydronephrosis, steinstrasse, or failure in retrograde ureteric stent placement, while retrograde ureteral catheterization using cystoscopy is suitable for patients diagnosed with small stones (≤10 mm) and low-grade hydronephrosis. PMID: 31796723 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - December 6, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Analysis of spinal stress analysis application in determining method for the pedicle screw placement under the guidance of X-Ray.
Authors: Jiang C, Yang Y, Zhou J, Yang K, Yao S, Jiang Z, Wu R Abstract OBJECTIVE: To evaluate the accuracy of a novel guidance method of pedicle screw implantation determined by spinal stress. METHODS: We retrospectively analyzed patients underwent pedicle screw internal fixation between January 2015 and August 2018 in our hospital. Patients were divided into two groups according to the methods of pedicle screw implantation namely, the conventional nail placement and novel guidance method of pedicle screw implantation determined by spinal stress. Accuracy of spinal pedicle screw placements was evaluated using ...
Source: Journal of X-Ray Science and Technology - November 29, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Thermoacoustic tomography of germinal matrix hemorrhage in neonatal mouse cerebrum.
CONCLUSIONS: This study demonstrates for the first time that TAT can detect GMH in neonatal mouse cerebrum in vivo. This represents the first important step towards the in vivo diagnosis and grading of hemorrhage in the infant human brain. PMID: 31771088 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - November 29, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

An approach for adaptive automatic threat recognition within 3D computed tomography images for baggage security screening.
CONCLUSIONS: Our AATR shows the capabilities of adapting to varying types of materials, even the unknown materials which are not available in the training data, adapting to varying required probability of detection and adapting to varying scales of the threat object. PMID: 31744038 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - November 22, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Quantification of hepatic steatosis in histologic images by deep learning method.
Authors: Yang F, Jia X, Lei P, He Y, Xiang Y, Jiao J, Zhou S, Qian W, Duan Q Abstract OBJECTIVE: To develop and test a novel method for automatic quantification of hepatic steatosis in histologic images based on the deep learning scheme designed to predict the fat ratio directly, which aims to improve accuracy in diagnosis of non-alcoholic fatty liver disease (NAFLD) with objective assessment of the severity of hepatic steatosis instead of subjective visual estimation. MATERIALS AND METHODS: Thirty-six 8-week old New Zealand white rabbits of both sexes were fed with high-cholesterol, high-fat diet and sacrifice...
Source: Journal of X-Ray Science and Technology - November 22, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Limits on transfer learning from photographic image data to X-ray threat detection.
CONCLUSIONS: Transfer learning is beneficial when X-ray data is very scarce-of the order of tens of training images in our experiments-but provides no significant benefit when hundreds or thousands of X-ray images are available. PMID: 31658095 [PubMed - as supplied by publisher] (Source: Journal of X-Ray Science and Technology)
Source: Journal of X-Ray Science and Technology - October 30, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Radiomics study for differentiating gastric cancer from gastric stromal tumor based on contrast-enhanced CT images.
Authors: Sun ZQ, Hu SD, Li J, Wang T, Duan SF, Wang J Abstract PURPOSE: To test the feasibility of differentiate gastric cancer from gastric stromal tumor using a radiomics study based on contrast-enhanced CT images. MATERIALS AND METHODS: The contrast-enhanced CT image data of 60 patients with gastric cancer and 40 patients with gastric stromal tumor confirmed by postoperative pathology were retrospectively analyzed. First, CT images were read by two senior radiologists to acquire subjective CT signs model, including perigastric fatty infiltration, perigastric enlarged lymph nodes, the enhancement and growth m...
Source: Journal of X-Ray Science and Technology - October 24, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Clinical efficacy of ultrasound-guided injection in the treatment of olecranon subcutaneous bursitis.
Authors: Wu Y, Chen Q, Chen K, He F, Quan J, Chen S, Guo X Abstract BACKGROUND: Recent studies have shown that ultrasound-guided injection of glucocorticoids is superior to blind puncture methods. OBJECTIVE: To evaluate clinical efficacy of ultrasound-guided drug injection in the treatment of olecranon subcutaneous bursitis. METHODS: From June 2016 to September 2018, 45 patients diagnosed with obvious synovial effusion and treated with ultrasound-guided injection therapy for olecranon bursitis were included in this study. Under the guidance of ultrasound, the synovial effusion aspiration was performed and 2...
Source: Journal of X-Ray Science and Technology - October 16, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Application of optical coherence tomography in clinical diagnosis.
Authors: Wang Y, Liu S, Lou S, Zhang W, Cai H, Chen X Abstract BACKGROUND: Optical coherence tomography (OCT) is a non-invasive diagnosing tool used in clinics. Due to its high resolution (
Source: Journal of X-Ray Science and Technology - October 10, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Fully automated registration of 3D CT data to CAD model for surface deviation measurement.
Authors: Yao G, Zou Y, Wang J, Yu H, Chen T Abstract  The aim of this study is to present a fully automated registration algorithm that allows for alignment and errors analysis of the 3D surface model obtained from industrial computed tomography (CT) images with the computer-aided design (CAD) model. First, two pre-processing steps are executed by the algorithm namely, CAD model subdivision and representing models. Next, two improved registration procedures are applied including covariance descriptors-based coarse registration with a novel and automatic calibration, followed by a fine registration technique th...
Source: Journal of X-Ray Science and Technology - October 10, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research