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BMC Medical Imaging

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https://www.readbyqxmd.com/read/29970014/structured-reporting-of-x-rays-for-atraumatic-shoulder-pain-advantages-over-free-text
#1
Franziska Schöppe, Wieland H Sommer, Florian Schmidutz, Dominik Pförringer, Marco Armbruster, Karolin J Paprottka, Jessica L V Plum, Bastian O Sabel, Felix G Meinel, Nora N Sommer
BACKGROUND: To analyse structured and free text reports of shoulder X-ray examinations evaluating the quality of reports and potential contributions to clinical decision-making. METHODS: We acquired both standard free text and structured reports of 31 patients with a painful shoulder without history of previous trauma who received X-ray exams. A template was created for the structured report based on the template ID 0000154 (Shoulder X-ray) from radreport.org using online software with clickable decision trees with concomitant generation of structured semantic reports...
July 3, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29914385/tonsillar-plasmacytoma-clues-on-magnetic-resonance-imaging
#2
İrfan Çelebi, Gülpembe Bozkurt, Nedim Polat
BACKGROUND: Malignant plasma cell proliferation may present as a disseminated disease (multiple myeloma), a solitary plasmacytoma of bone, or an extramedullary plasmacytoma of soft tissue. The latter plasmacytomas represent approximately 3% of all plasma cell proliferations, and 80% develop in the head-and-neck region. The unexpected clinical presentation of such masses may be present. CASE PRESENTATION: Here, we report a rare case of primary tonsillar plasmacytoma in a 42-year-old female...
June 18, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29788923/the-segmentation-of-bones-in-pelvic-ct-images-based-on-extraction-of-key-frames
#3
Hui Yu, Haijun Wang, Yao Shi, Ke Xu, Xuyao Yu, Yuzhen Cao
BACKGROUND: Bone segmentation is important in computed tomography (CT) imaging of the pelvis, which assists physicians in the early diagnosis of pelvic injury, in planning operations, and in evaluating the effects of surgical treatment. This study developed a new algorithm for the accurate, fast, and efficient segmentation of the pelvis. METHODS: The proposed method consists of two main parts: the extraction of key frames and the segmentation of pelvic CT images...
May 22, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29769079/a-consistency-evaluation-of-signal-to-noise-ratio-in-the-quality-assessment-of-human-brain-magnetic-resonance-images
#4
Shaode Yu, Guangzhe Dai, Zhaoyang Wang, Leida Li, Xinhua Wei, Yaoqin Xie
BACKGROUND: Quality assessment of medical images is highly related to the quality assurance, image interpretation and decision making. As to magnetic resonance (MR) images, signal-to-noise ratio (SNR) is routinely used as a quality indicator, while little knowledge is known of its consistency regarding different observers. METHODS: In total, 192, 88, 76 and 55 brain images are acquired using T2 * , T1 , T2 and contrast-enhanced T1 (T1 C) weighted MR imaging sequences, respectively...
May 16, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29769042/mpcad-a-multi-scale-radiomics-driven-framework-for-automated-prostate-cancer-localization-and-detection
#5
Farzad Khalvati, Junjie Zhang, Audrey G Chung, Mohammad Javad Shafiee, Alexander Wong, Masoom A Haider
BACKGROUND: Quantitative radiomic features provide a plethora of minable data extracted from multi-parametric magnetic resonance imaging (MP-MRI) which can be used for accurate detection and localization of prostate cancer. While most cancer detection algorithms utilize either voxel-based or region-based feature models, the complexity of prostate tumour phenotype in MP-MRI requires a more sophisticated framework to better leverage available data and exploit a priori knowledge in the field...
May 16, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29769030/in-silico-simulation-of-liver-crack-detection-using-ultrasonic-shear-wave-imaging
#6
Erwei Nie, Jiao Yu, Debaditya Dutta, Yanying Zhu
BACKGROUND: Liver trauma is an important source of morbidity and mortality worldwide. A timely detection and precise evaluation of traumatic liver injury and the bleeding site is necessary. There is a need to develop better imaging modalities of hepatic injuries to increase the sensitivity of ultrasonic imaging techniques for sites of hemorrhage caused by cracks. In this study, we conduct an in silico simulation of liver crack detection and delineation using an ultrasonic shear wave imaging (USWI) based method...
May 16, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29764411/contrast-enhanced-ultrasonography-of-the-pancreas-shows-impaired-perfusion-in-pancreas-insufficient-cystic-fibrosis-patients
#7
Trond Engjom, Kim Nylund, Friedemann Erchinger, Marcus Stangeland, Birger Norderud Lærum, Martin Mézl, Radovan Jiřík, Odd Helge Gilja, Georg Dimcevski
BACKGROUND: Perfusion assessment of the pancreas is challenging and poorly evaluated. Pancreatic affection is a prevalent feature of cystic fibrosis (CF). Little is known about pancreatic perfusion in CF. We aimed to assess pancreatic perfusion by contrast-enhanced ultrasound (CEUS) analysed in the bolus-and-burst model and software. METHODS: We performed contrast enhanced ultrasound of the pancreas in 25 CF patients and 20 healthy controls. Perfusion data was analysed using a dedicated perfusion model providing the mean capillary transit-time (MTT), blood flow (BF) and blood-volume (BV)...
May 15, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29764383/an-automated-algorithm-for-the-detection-of-cortical-interruptions-and-its-underlying-loss-of-trabecular-bone-a-reproducibility-study
#8
M Peters, J de Jong, A Scharmga, A van Tubergen, P Geusens, D Loeffen, R Weijers, S K Boyd, C Barnabe, K S Stok, B van Rietbergen, J van den Bergh
BACKGROUND: We developed a semi-automated algorithm that detects cortical interruptions in finger joints using high-resolution peripheral quantitative computed tomography (HR-pQCT), and extended it with trabecular void volume measurement. In this study we tested the reproducibility of the algorithm using scan/re-scan data. METHODS: Second and third metacarpophalangeal joints of 21 subjects (mean age 49 (SD 11) years, 17 early rheumatoid arthritis and 4 undifferentiated arthritis, all diagnosed < 1 year ago) were imaged twice by HR-pQCT on the same day with repositioning between scans...
May 15, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29764382/utility-of-routine-ultrasonography-follow-up-after-total-thyroidectomy-in-patients-with-papillary-thyroid-carcinoma-a-single-center-study
#9
Ha Kyoung Park, Dong Wook Kim, Tae Kwun Ha, Young Jin Heo, Jin Wook Baek, Yoo Jin Lee, Young Jun Cho, Dong Kun Lee, Do Hun Kim, Soo Jin Jung, Ki Jung Ahn, Hye Shin Ahn, Hye Jin Baek
BACKGROUND: This study aimed to assess the appropriate number of sessions and interval of routine follow-up ultrasonography (US) in patients who underwent total thyroidectomy for papillary thyroid carcinoma (PTC). METHODS: Between January 2008 and December 2009, 569 patients underwent total thyroidectomy for PTC. Of the 569 patients, 44 were excluded from the study because of no US follow-up data for the neck (n = 43) or owing to indeterminate tumor recurrence/persistence (n = 1)...
May 15, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29743035/mammographic-density-changes-in-surgical-weight-loss-an-indication-for-personalized-screening
#10
Natalia Partain, Ali Mokdad, Nancy Puzziferri, Jessica Porembka, Stephen Seiler, Alana Christie, Deborah Farr, Aeisha Rivers, A Marilyn Leitch, Rachel Wooldridge, James Huth, Roshni Rao
BACKGROUND: Obesity and high radiologic breast density independently increase breast cancer risk. We evaluated the effect of surgical weight loss on mammographic density (MD). METHODS: Patients undergoing bariatric surgery and screening mammography (MG) were identified, data regarding demographics, comorbidities, calculated and genetic breast cancer risk was collected. Patients had a MG before and after surgery. Fellowship-trained breast radiologists assigned Breast Imaging Reporting and Data System density categories...
May 9, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29743027/quantification-of-fdg-pet-ct-with-delayed-imaging-in-patients-with-newly-diagnosed-recurrent-breast-cancer
#11
Christina Baun, Kirsten Falch, Oke Gerke, Jeanette Hansen, Tram Nguyen, Abass Alavi, Poul-Flemming Høilund-Carlsen, Malene G Hildebrandt
BACKGROUND: Several studies have shown the advantage of delayed-time-point imaging with 18F-FDG-PET/CT to distinguish malignant from benign uptake. This may be relevant in cancer diseases with low metabolism, such as breast cancer. We aimed at examining the change in SUV from 1 h (1h) to 3 h (3h) time-point imaging in local and distant lesions in patients with recurrent breast cancer. Furthermore, we investigated the effect of partial volume correction in the different types of metastases, using semi-automatic quantitative software (ROVER™)...
May 9, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29739350/automatic-brain-tissue-segmentation-based-on-graph-filter
#12
Youyong Kong, Xiaopeng Chen, Jiasong Wu, Pinzheng Zhang, Yang Chen, Huazhong Shu
BACKGROUND: Accurate segmentation of brain tissues from magnetic resonance imaging (MRI) is of significant importance in clinical applications and neuroscience research. Accurate segmentation is challenging due to the tissue heterogeneity, which is caused by noise, bias filed and partial volume effects. METHODS: To overcome this limitation, this paper presents a novel algorithm for brain tissue segmentation based on supervoxel and graph filter. Firstly, an effective supervoxel method is employed to generate effective supervoxels for the 3D MRI image...
May 9, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29728144/a-prospective-study-to-evaluate-the-intra-individual-reproducibility-of-bone-scans-for-quantitative-assessment-in-patients-with-metastatic-prostate-cancer
#13
Mariana Reza, Reza Kaboteh, May Sadik, Anders Bjartell, Per Wollmer, Elin Trägårdh
BACKGROUND: The Bone Scan Index (BSI) is used to quantitatively assess the total tumour burden in bone scans of patients with metastatic prostate cancer. The clinical utility of BSI has recently been validated as a prognostic imaging biomarker. However, the clinical utility of the on-treatment change in BSI is dependent on the reproducibility of bone scans. The objective of this prospective study is to evaluate the intra-patient reproducibility of two bone scan procedures performed at a one-week interval...
May 4, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29724180/joint-sparse-reconstruction-of-multi-contrast-mri-images-with-graph-based-redundant-wavelet-transform
#14
Zongying Lai, Xinlin Zhang, Di Guo, Xiaofeng Du, Yonggui Yang, Gang Guo, Zhong Chen, Xiaobo Qu
BACKGROUND: Multi-contrast images in magnetic resonance imaging (MRI) provide abundant contrast information reflecting the characteristics of the internal tissues of human bodies, and thus have been widely utilized in clinical diagnosis. However, long acquisition time limits the application of multi-contrast MRI. One efficient way to accelerate data acquisition is to under-sample the k-space data and then reconstruct images with sparsity constraint. However, images are compromised at high acceleration factor if images are reconstructed individually...
May 3, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29716527/differentiation-of-orbital-lymphoma-and-idiopathic-orbital-inflammatory-pseudotumor-combined-diagnostic-value-of-conventional-mri-and-histogram-analysis-of-adc-maps
#15
Jiliang Ren, Ying Yuan, Yingwei Wu, Xiaofeng Tao
BACKGROUND: The overlap of morphological feature and mean ADC value restricted clinical application of MRI in the differential diagnosis of orbital lymphoma and idiopathic orbital inflammatory pseudotumor (IOIP). In this paper, we aimed to retrospectively evaluate the combined diagnostic value of conventional magnetic resonance imaging (MRI) and whole-tumor histogram analysis of apparent diffusion coefficient (ADC) maps in the differentiation of the two lesions. METHODS: In total, 18 patients with orbital lymphoma and 22 patients with IOIP were included, who underwent both conventional MRI and diffusion weighted imaging before treatment...
May 2, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29703180/dental-age-estimation-in-southern-chinese-population-using-panoramic-radiographs-validation-of-three-population-specific-reference-datasets
#16
Jayakumar Jayaraman, Graham J Roberts, Hai Ming Wong, Nigel M King
BACKGROUND: The accuracy of estimated age should depend on the reference data sets (RDS) from which the maturity scores or Ages of Attainment (AoA) were obtained. This study aimed to test the accuracy of age estimation from three different population specific dental reference datasets (RDS). METHODS: Two hundred and sixty six dental panoramic radiographs of subjects belonging to southern Chinese ethnicity were scored and dental age (DA) was estimated from three reference datasets: French-Canadian, United Kingdom (UK) Caucasian and southern Chinese...
April 27, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29614962/daily-routine-versus-on-demand-chest-radiograph-policy-and-practice-in-adult-icu-patients-clinicians-perspective
#17
Abdullah Al Shahrani, Khaled Al-Surimi
BACKGROUND: Chest radiographs are taken daily as a part of routine investigations in Intensive care unit (ICU) patients. They are less effective and unlikely to alter the management of the majority of these patients compared to the radiographs obtained when indicated. According to the American College of Radiology (ACR) Appropriateness criteria, only selective ordering of chest radiographs is recommended, including elderly or high risk patients. The aim of this study was to identify and assess the clinician's perspective in abandoning the current practice of daily routine chest radiograph and replacing with the on-demand radiograph in Saudi hospitals...
April 3, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29433494/incidental-finding-of-large-pneumothorax-on-cardiac-mr-scan
#18
J P M Andrews, G McKillop, M R Dweck
BACKGROUND: We believe this is the first case report of a pneumothorax being identified using cardiac magnetic resonance imaging. This case also illustrates the haemodynamic effect a large pneumothorax can have on right ventricular filling in diastole. CASE PRESENTATION: A 26-year-old attended for an interval follow up Cardiac Magnetic Resonance (CMR) of his thoracic aorta after a thoracic co-arctation repair aged 3. He was found to have an incidental large pneumothorax by the reporting cardiology fellow which was confirmed by the on-call radiologist...
February 12, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29402236/investigations-of-organ-and-effective-doses-of-abdominal-cone-beam-computed-tomography-during-transarterial-chemoembolization-using-monte-carlo-simulation
#19
Yi-Shuan Hwang, Hui-Yu Tsai, Yu-Ying Lin, Kar-Wai Lui
BACKGROUND: To investigate the organ dose, effective dose (ED), conversion factor, and the C-arm rotation angle effects on dose variations of abdominal C-arm cone-beam computed tomography (CBCT) during transarterial chemoembolization (TACE). METHODS: The organ doses and EDs for abdominal C-arm CBCT were retrospectively calculated according to a Monte Carlo technique for 80 patients. Dose variations from projections, ED to dose-area product (DAP) ratios, and effects of body mass index (BMI) on the ED and ED to DAP ratios were also analyzed...
February 5, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29374459/systemic-air-embolism-after-percutaneous-computed-tomography-guided-lung-biopsy-due-to-a-kink-in-the-coaxial-biopsy-system-a-case-report
#20
Hsu-Chao Chang, Mei-Chen Yang
BACKGROUND: Systemic air embolism is a rare but potentially life-threatening complication of percutaneous computed tomography (CT)-guided lung biopsy. The incidence might be underestimated because of failure to diagnose this adverse event in asymptomatic patients; early recognition is difficult. CASE PRESENTATION: We report the case of a 73-year-old man with systemic air embolism, a complication of percutaneous CT-guided lung biopsy, due to a kink in the coaxial biopsy system...
January 27, 2018: BMC Medical Imaging
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