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Clinical Imaging

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https://www.readbyqxmd.com/read/29223410/characteristics-of-computed-tomography-perfusion-parameters-in-non-small-cell-lung-cancer-and-its-relationship-to-histology-size-stage-an-treatment-response
#1
Carmen Trinidad López, Miguel Souto Bayarri, Roque Oca Pernas, Carlos Delgado Sánchez-Gracián, Maria González Vázquez, Antonio Vaamonde Liste, Gonzalo Tardáguila De La Fuente, Javier De La Fuente Aguado
OBJECTIVES: To analyze computed tomography perfusion (CTP) parameters in NSCLC. MATERIALS AND METHODS: Prospective study, 152 patients with NSCLC. CTP parameters were correlated with histology, stage, size and response to conventional chemotherapy/radiotherapy. RESULTS: Neuroendocrine tumours presented higher BV (p 0.002). Negative correlation of PMB (p 0.003) and positive of MTT (p 0.046) with T stage was found. BF showed negative correlation with size...
December 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29207301/percutaneous-low-dose-ct-guided-lung-biopsy-with-an-augmented-reality-navigation-system-validation-of-the-technique-on-496-suspected-lesions
#2
Eliodoro Faiella, Giulia Frauenfelder, Domiziana Santucci, Giacomo Luppi, Emiliano Schena, Bruno Beomonte Zobel, Rosario Francesco Grasso
PURPOSE: To validate a CT-navigation system during percutaneous lung biopsy (PLB). METHODS: Four hundred-ninety-six patients underwent low-dose CT-guided PLB. Lesion diameter (LD), procedural time (PT), histologic validity, lesion distance from pleural surface (DPS), needle distance travelled during procedure (DTP), complications and radiation exposure were recorded. RESULTS: Hysto-patological diagnosis was obtained in 96.2% cases. Mean PT, DPS, DTP, LD were respectively 29...
December 2, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29216522/case-of-urethral-duplication-seen-by-voiding-urosonography
#3
Hanisha Patel, Christopher Watterson, Jeanne S Chow
A 3-month-old premature male infant with imperforate anus and hypospadias underwent contrast-enhanced voiding urosonography (ceVUS) followed by voiding cystourethrography (VCUG). Images from the ceVUS demonstrated a distinct linearity arising dorsally from the posterior urethra that partially opacified with contrast. VCUG confirmed a urethral duplication. To our knowledge, this exceedingly rare anomaly has yet to be reported by ceVUS.
December 1, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29190519/the-predictive-value-of-computed-tomography-in-the-detection-of-reflux-esophagitis-in-patients-undergoing-upper-endoscopy
#4
Lukas Lambert, Gabriela Grusova, Andrea Burgetova, Patrik Matras, Alena Lambertova, Petr Kuchynka
BACKGROUND: Reflux esophagitis (RE) may mimic symptoms requiring cross-sectional imaging. METHODS: From 565 patients who had CT and esophagogastroduodenoscopy within four days apart, CT scans of 72 patients with RE confirmed by esophagogastroduodenoscopy and 108 matched patients without RE were evaluated for distal esophageal wall characteristics. RESULTS: In RE patients the distal esophageal wall thickness was greater (5.2±2.0mm) compared to patients without RE (3...
November 24, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29190518/multiple-focal-nodular-hyperplasia-mri-features
#5
Kiran K Busireddy, Miguel Ramalho, Mamdoh AlObaidy, António P Matos, Lauren M Burke, Brian M Dale, Richard C Semelka
PURPOSE: To describe MRI features of multiple Focal Nodular Hyperplasia (FNHs). METHODS: 40 consecutive subjects (37 females, mean age, 38.8years) were included. All studies were independently reviewed. This was an observational study to define the radiological features of multifocal FNH. RESULTS: 130 lesions were evaluated. The majority (88.5%), were peripheral in location. 92.3% lesions were lobulated. Marked enhancement was present in 94...
November 24, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29232574/imaging-analysis-of-superficial-soft-tissue-lymphomas
#6
In Sook Lee, You Seon Song, Seung Hyun Lee, Young Jin Choi, Sung Moon Lee
PURPOSE: To describe imaging findings in superficial soft tissue lymphomas, especially those located in the skin and subcutaneous layer. MATERIALS AND METHODS: This study included 44 pathologically confirmed superficial lymphoma lesions. Imaging analysis included the size, margin, location, morphology, homogeneity and multiplicity. RESULTS: A nodular form was the most common (21/44, 47.7%) morphology, and of them, 18 demonstrated a streaky appearance...
November 20, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29161580/artificial-intelligence-and-deep-learning-radiology-s-next-frontier
#7
REVIEW
Ray Cody Mayo, Jessica Leung
Tracing the use of computers in the radiology department from administrative functions through image acquisition, storage, and reporting, to early attempts at improved diagnosis, we begin to imagine possible new frontiers for their use in exam interpretation. Given their initially slow but ultimately substantial progress in the noninterpretive areas, we are left desiring and even expecting more in the interpretation realm. New technological advances may provide the next wave of progress and radiologists should be early adopters...
November 18, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29220708/comparative-diagnostic-accuracy-of-dual-energy-ct-myocardial-perfusion-imaging-by-monochromatic-energy-versus-material-decomposition-methods
#8
Ibrahim Danad, Iksung Cho, Kimberly Elmore, Joshua Schulman-Marcus, Bríain Ó Hartaigh, Wijnand J Stuijfzand, Patricia Carrascosa, James K Min
PURPOSE: To compare the diagnostic value of monochromatic and material decomposition (MD) dual- energy computed tomography (DECT) imaging for the evaluation of ischemia. METHODS: Patients with suspected coronary artery disease underwent rest-stress DECT and SPECT perfusion imaging. DECT images were reconstructed between 40 and 140keV and through MD of iodine/muscle. RESULTS: MD and monochromatic imaging had a sensitivity, specificity, negative predictive, positive predictive value, and accuracy of 89%, 40%, 67%, 73% and 71%; and 91%, 67%, 67%, 91% and 86%, respectively (p=0...
November 11, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29161579/correlation-between-lung-perfusion-blood-volume-and-spect-images-in-patients-with-chronic-thromboembolic-pulmonary-hypertension-by-balloon-pulmonary-angioplasty
#9
Hirofumi Koike, Eijun Sueyoshi, Ichiro Sakamoto, Masataka Uetani, Tomoo Nakata, Kouji Maemura
OBJECTIVES: We evaluated the reperfusion by balloon pulmonary angioplasty (BPA) in lung PBV and SPECT images. METHODS: In total, 17 patients and 57 sessions were evaluated. Pre-BPA and post-BPA lung PBV and SPECT/CT images, based on both anatomical segments and physiologic regions (upper/middle/lower) were compared. RESULTS: BPA had a positive effect on most hypoperfused/unperfused segments/regions. There was generally a high rate of agreement between PBV measurements and SPECT/CT...
November 11, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29150343/response-to-does-sex-influence-biceps-brachii-muscle-stiffness
#10
LETTER
Johnson Chen, Jing Gao
No abstract text is available yet for this article.
November 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29150342/does-sex-influence-biceps-brachii-muscle-stiffness
#11
LETTER
Chueh-Hung Wu
No abstract text is available yet for this article.
November 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29132054/contrast-enhanced-imaging-features-and-differentiation-of-benign-and-malignant-focal-splenic-lesions
#12
Fang Cao, Wei Qian, Yanqing Ma, Yinbo Wu, Jianguo Zhong
To assess the value of imaging features for differentiating malignant from benign focal splenic lesions, 79 pathologically proved cases with contrast-enhanced CT or MRI were retrospectively studied. The morphological characteristics were assessed and the enhancement patterns were classified into five categories. After multivariate logistic analysis, the lesion margin and enhancement patterns were significantly different between benign and malignant lesions. The combination of ill-defined margin and hypovascular enhancement for suggesting malignant lesions had a good specificity (94...
November 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29127877/breast-arterial-calcification-on-screening-mammography-can-predict-significant-coronary-artery-disease-in-women
#13
Brendan S Kelly, Emer ScanlON, Helen Heneghan, Ciaran E Redmond, Gerard M Healy, Enda Mc Dermott, Eric J Heffernan, Ruth Prichard, Sorcha Mc Nally
INTRODUCTION: Breast Arterial Calcification (BAC) on digital mammography has been associated with an increased risk of Coronary Artery Disease (CAD). We aimed to investigate the association of BAC with findings on Coronary Computed Tomography Angiography (CCTA) within a cohort of women from the national breast screening program. METHODS: Symptomatic women (chest pain) aged between 50 and 65 who underwent a CCTA and who also had a screening mammography between 2014 and 2015 were recorded...
November 3, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29127876/differentiating-biliary-cystadenomas-from-benign-hepatic-cysts-preliminary-analysis-of-new-predictive-imaging-features
#14
Mark D Kovacs, Douglas H Sheafor, Philip F Burchett, Melissa M Picard, Andrew D Hardie
OBJECTIVE: To identify performance of imaging features in differentiating hepatic cysts from biliary cystadenomas of the liver. METHODS: 25 pathologically confirmed hepatic cystic lesions (hepatic cysts or biliary cystadenomas) were evaluated retrospectively and predetermined imaging features assessed for performance in differentiation. RESULTS: Any septation which arose from a cyst wall without external indentation had a very high association with biliary cystadenoma, while the presence of a thick septation had only a moderate association...
November 3, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29132055/benefit-and-clinical-significance-of-retrospectively-obtained-spectral-data-with-a-novel-detector-based-spectral-computed-tomography-initial-experiences-and-results
#15
Prabhakar Rajiah, Rong Rong, Claudia Martinez-Rios, Negin Rassouli, Luis Landeras
OBJECTIVES: To evaluate the benefits and clinical significance of retrospectively generated spectral image-datasets with the novel detector-based Spectral CT (SDCT). METHODS: A total of 118 body CTs from the SDCT prototype were included. Based on the clinical indication, two radiologists were asked if they would have opted for a dual-energy mode/scan if the patient was scanned in one of the other commercially-available dual-energy scanners, which need prospective selection of dual energy mode...
October 31, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29120812/imaging-findings-in-systemic-childhood-diseases-presenting-with-dermatologic-manifestations
#16
REVIEW
Adam Z Fink, Julia K Gittler, Radhika N Nakrani, Jonathan Alis, Einat Blumfield, Terry L Levin
PURPOSE: Many childhood diseases often present with skin abnormalities with which radiologists are largely unfamiliar. Knowledge of associated dermatologic manifestations may aid the radiologist in confirming the diagnosis and recommending targeted imaging of affected organs. METHODS: We review the imaging findings in childhood diseases associated with dermatologic manifestations. FINDINGS: Diseases include dermatologic findings which herald underlying malignancy (Neuroblastoma, leukemia/lymphoma, Langerhans cell histiocytosis),are associated with risk of malignancy (Epidermolysis Bullosa, basal cell nevus syndrome, Cowden's syndrome, Tuberous Sclerosis),or indicate a systemic inflammatory/immune disorder (Kawasaki's disease, Henoch Schonlein Purpura, systemic lupus erythematosus, scleroderma, sarcoidosis, dermatomyositis and immune thrombocytopenic purpura)...
October 31, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29120813/visibility-of-mammographically-occult-breast-cancer-on-diffusion-weighted-mri-versus-ultrasound
#17
Nita Amornsiripanitch, Habib Rahbar, Averi E Kitsch, Diana L Lam, Brett Weitzel, Savannah C Partridge
PURPOSE: To investigate the visibility of mammographically occult breast cancers on diffusion-weighted MRI (DWI) versus ultrasound. MATERIALS AND METHODS: Mammographically occult breast cancers (n=60) initially detected on contrast-enhanced MRI that underwent pre-biopsy targeted ultrasound were retrospectively evaluated for visibility on DWI and ultrasound. RESULTS: More cancers were visible on DWI than ultrasound (78% vs. 63%; p=0.049), with 32 (53%) visible on both and 7 (12%) not visible on either...
October 28, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29100042/trends-in-breast-imaging-an-analysis-of-21years-of-formal-scientific-abstracts-at-the-radiological-society-of-north-america
#18
Samantha L Heller, Abbas Charlie, James S Babb, Linda Moy, Yiming Gao
PURPOSE: To capture shifts in breast imaging through 21years of scientific meeting abstracts. MATERIALS AND METHODS: RSNA meeting programs (1995-2015) were searched to identify breast imaging scientific oral abstracts. Abstract year, author gender and degree, country, state, study design, modality, topic, funding and disclosures were recorded. Spearman correlation was performed. RESULTS: There was an increase in %women first authors (rs=0...
October 28, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29120811/magnetic-resonance-mr-features-in-triple-negative-breast-cancer-tnbc-vs-receptor-positive-cancer-ntnbc
#19
Giulia Angelini, Carolina Marini, Chiara Iacconi, Dionisia Mazzotta, Monica Moretti, Eugenia Picano, Riccardo Morganti
Few reports in literature describe triple negative breast cancer (TNBC) imaging findings. Aim of the study is to determine MR-features of TNBC compared to receptor positive cancer (nTNBC). From May 2014 to May 2015, we retrospectively enrolled 31 consecutive patients with histological diagnosis of TNBC and a control group of 31 consecutive nTNBC observed in the same period, out of 602 cancer, diagnosed in our department in the same year. Histopathological analysis and MR-features of TNBC (31 patients) were compared to nTNBC (31 patients)...
October 27, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29149718/coronary-risk-assessment-at-x-ray-dose-equivalent-ungated-chest-ct-results-of-a-multi-reader-study
#20
Michael Messerli, Lukas Hechelhammer, Sebastian Leschka, René Warschkow, Simon Wildermuth, Ralf W Bauer
OBJECTIVES: To determine the value of ultra-low dose chest CT with tin filtration for ordinal coronary artery calcium (CAC) risk scoring. METHODS: 50 patients were prospectively included and underwent clinical standard dose chest CT (1.8±0.7mSv) and ultra-low dose CT (0.13±0.01mSv). Four radiologists estimated presence and extent of CAC. RESULTS: Weighted kappa values for CAC were 0.76-0.97 in standard dose and 0.75-0.95 in ultra-low dose CT (p<0...
October 25, 2017: Clinical Imaging
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