Read by QxMD icon Read

images clinical

Peter A Muller, Jennifer L Mueller, Michelle Mellenthin, Rashmi Murthy, Michael Capps, Brandie Wagner, Melody Alsaker, Robin Deterding, Scott D Sagel, Jordana Hoppe
Lung function monitoring by spiromety plays a critical role in the clinical care of pediatric cystic fibrosis (CF) patients, but many young children are unable to perform spirometry, and the outputs are often normal even in the presence of lung disease. Measures derived from electrical impedance tomography (EIT) images were studied for their utility as potential surrogates for spirometry in CF patients and to assess response to intravenous antibiotic treatment for acute pulmonary exacerbations (PEx) in a subset of patients...
March 22, 2018: Physiological Measurement
Melissa Preissner, Rhiannon P Murrie, Isaac Pinar, Freda Werdiger, Richard P Carnibella, Graeme R Zosky, Andreas Fouras, Stephen Dubsky
We have developed an X-ray imaging system for <i>in vivo</i> four-dimensional computed tomography (4DCT) of small animals for pre-clinical lung investigations. Our customized laboratory facility is capable of high resolution <i>in vivo</i> imaging at high frame rates. Characterization using phantoms demonstrate a spatial resolution of slightly below 50 μm at imaging rates of 30 Hz, and the ability to quantify material density differences of at least 3%...
March 22, 2018: Physics in Medicine and Biology
Soo Young Yun, Young Jin Heo, Hae Woong Jeong, Jin Wook Baek, Hye Jung Choo, Jung Hwa Seo, Sung Tae Kim, Ji Young Lee, Sung Chul Jin
Background Acute ischemic stroke (AIS) more frequently develops in patients with intracranial vertebral artery dissection (VAD) than extracranial VAD, and is associated with possible poor clinical outcomes. The aim of this study is to compare high-resolution magnetic resonance imaging (HR-MRI) findings and clinical features of VAD with and without AIS. Methods Twenty-nine lesions from 27 patients (15 male and 12 female patients; age range = 28-73 years) who underwent diffusion MRI and 3T HR-MRI within seven days were included...
January 1, 2018: Neuroradiology Journal
Paolo Fogagnolo, Maurizio Digiuni, Giovanni Montesano, Chiara Rui, Marco Morales, Luca Rossetti
BACKGROUND: Compass (CenterVue, Padova, Italy) is a fundus automated perimeter which has been introduced in the clinical practice for glaucoma management in 2014. The aim of the article is to review Compass literature, comparing its performances against Humphrey Field Analyzer (Zeiss Humphrey Systems, Dublin, CA, USA). RESULTS: Analyses on both normal and glaucoma subjects agree on the fact that Humphrey Field Analyzer and Compass are interchangeable, as the difference of their global indices is largely inferior than test -retest variability for Humphrey Field Analyzer...
March 1, 2018: European Journal of Ophthalmology
Xiaoyan Yang, Dongya Wang, Yunhao Shi, Jianhua Zou, Qisen Zhao, Qi Zhang, Wei Huang, Jinjun Shao, Xiaoji Xie, Xiaochen Dong
In preclinical and clinical research, to destroy cancers, particularly those located in deep tissues is still a great challenge. Photodynamic therapy and photothermal therapy are promising alternative approaches for tissue cancer curing. Black phosphorus (BP) based nanomaterials, with broad UV-vis near-infrared (NIR) absorbance and excellent photothermal effect, have shown great potential in biomedical applications. Herein, a biocompatible therapeutic platform, Chlorin e6 (Ce6) decorated BP nanosheets (NSs), has been developed for fluorescence and thermal imaging guided photothermal and photodynamic synergistic cancer treatment...
March 22, 2018: ACS Applied Materials & Interfaces
Brittany L Daughtry, Shawn L Chavez
The use of time-lapse microscopic imaging has proven to be a powerful tool for the study of mitotic divisions and other cellular processes across diverse species and cell types. Although time-lapse monitoring (TLM) of human preimplantation development was first introduced to the in vitro fertilization (IVF) community several decades ago, it was not until relatively recently that TLM systems were commercialized for clinical embryology purposes. Traditionally, human IVF embryos are assessed by successful progression and morphology under a stereomicroscope at distinct time points prior to selection for transfer...
2018: Methods in Molecular Biology
Yoshihiko Tsukamoto
The mouse retina has a layered structure that is composed of five classes of neurons supported by Müller glial and pigment epithelial cells. Recent studies have made progress in the classification of bipolar and ganglion cells, and also in the wiring of rod-driven signaling, color coding, and directional selectivity. Molecular biological techniques, such as genetic manipulation, transcriptomics, and fluorescence imaging, have contributed a lot to these advancements. The mouse retina has consistently been an important experimental system for both basic and clinical neurosciences...
2018: Methods in Molecular Biology
Neha Berry, Saroj Kant Sinha, Anish Bhattacharya, K K Prasad, Chetana Vaishnavi, Kim Vaiphei, Jayanta Samanta, Raghavendra Prasada, Narendra Dhaka, Rakesh Kochhar
BACKGROUND: Disease activity in ulcerative colitis (UC) is best assessed clinically by Mayo score. 18-Fluorodeoxyglucose positron emission tomography-computerized tomography (FDG PET-CT) is a noninvasive imaging technique to assess extent, disease activity and response to treatment of UC, especially in high risk population or patients unwilling for endoscopy. AIMS: We conducted a prospective observational study with the aim of assessing and correlating UC disease activity by clinical criteria, endoscopy, histology, serum and fecal biomarkers, and FDG PET-CT...
March 21, 2018: Digestive Diseases and Sciences
Jeffrey Lambe, Olwen C Murphy, Shiv Saidha
PURPOSE OF REVIEW: With the recognition that neurodegeneration represents the principal substrate of disability in multiple sclerosis (MS), there has been increased strives towards identifying biomarkers for accurately quantifying and tracking neurodegeneration during the disease course. The retina provides an opportune "window" into the central nervous system (CNS) in MS, with retinal changes in MS reflecting not only local, but also global aspects of neurodegeneration and inflammation operative in the disease...
March 21, 2018: Current Treatment Options in Neurology
Jayson Lian, Nicole Levine, Woojin Cho
PURPOSE: To review the current literature on methods of accurate numeration of vertebral segments in patients with Lumbosacral transitional vertebrae (LSTVs). LSTVs are a common congenital anomaly of the L5-S1 junction. While their clinical significance has been debated, unquestionable is the need for their identification prior to spinal surgery. We hypothesize that there are no reliable landmarks by which we can accurately number transitional vertebrae, and thus a full spinal radiograph is required...
March 21, 2018: European Spine Journal
Arnaud Attyé, Michael Eliezer, Maud Medici, Irène Tropres, Georges Dumas, Alexandre Krainik, Sébastien Schmerber
OBJECTIVES: A case-controlled imaging study demonstrated that saccular hydrops was specific to Meniere's disease (MD), but only present in a subset of patients. Here, we compared patients with definite MD, vertigo and sensorineural hearing loss (SNHL) to elucidate the relationship between saccular hydrops and extent of SNHL. METHODS: In this prospective study, we performed 3D-FLAIR sequences between 4.5 and 5.5 h after contrast media injection in patients with MD (n=20), SNHL (n=20), vertigo (n=20) and 30 healthy subjects...
March 21, 2018: European Radiology
Zhi-Cheng Li, Hongmin Bai, Qiuchang Sun, Qihua Li, Lei Liu, Yan Zou, Yinsheng Chen, Chaofeng Liang, Hairong Zheng
OBJECTIVES: To build a reliable radiomics model from multiregional and multiparametric magnetic resonance imaging (MRI) for pretreatment prediction of O6 -methylguanine-DNA methyltransferase (MGMT) promotor methylation status in glioblastoma multiforme (GBM). METHODS: In this retrospective multicentre study, 1,705 multiregional radiomics features were automatically extracted from multiparametric MRI. A radiomics model with a minimal set of all-relevant features and a radiomics model with univariately-predictive and non-redundant features were built for MGMT methylation prediction from a primary cohort (133 patients) and tested on an independent validation cohort (60 patients)...
March 21, 2018: European Radiology
Xiaohua Yin, Rong Xu, Yingchun Wang, Tao Cheng, Hui Zhou
Coronary computed tomography angiography (CCTA) can provide abundant information about the anatomy of the coronary artery. However, this modality is limited in evaluation of myocardial function. Four-dimensional speckle tracking echocardiography (4DSTE) is a novel and sensitive technique for quantitative evaluation of myocardial deformation. We estimated the value of these imaging modalities to predict the risk of MACE in 209 patients with suspected coronary artery disease(CAD) after a median follow-up of 727 days...
March 21, 2018: International Journal of Cardiovascular Imaging
Ana Filipa Geraldo, João Pereira, Pedro Nunes, Sofia Reimão, Rita Sousa, Miguel Castelo-Branco, Susana Pinto, Jorge Guedes Campos, Mamede de Carvalho
PURPOSE: This paper aims to analyze the contribution of mean diffusivity (MD), axial diffusivity (AD), and radial diffusivity (RD) in the detection of microstructural abnormalities in amyotrophic lateral sclerosis (ALS) and to evaluate the degree of agreement between structural and functional changes through concomitant diffusion tensor imaging (DTI), transcranial magnetic stimulation (TMS), and clinical assessment. METHODS: Fourteen patients with ALS and 11 healthy, age- and gender-matched controls were included...
March 22, 2018: Neuroradiology
S Rajesh, Amar Mukund, Binit Sureka, Kalpana Bansal, Maxime Ronot, Ankur Arora
Non-cirrhotic portal hypertension (NCPH) comprises a group of diseases that are characterized by increased portal pressure in the absence of cirrhosis of the liver. It may arise as a result of either primary hepatic disease or the effects of systemic disorders on liver. The natural course of NCPH is largely indolent and benign with an overall better outcome than cirrhosis, as long as the complications of portal hypertension are properly managed and regular surveillance is carried out. However, due to the numerous and variable etiological factors and lack of standardized diagnostic criteria, this entity is under-recognized clinically as well as pathologically and often gets mislabeled as cryptogenic cirrhosis...
March 21, 2018: Abdominal Radiology
Alanna Van Hooser, Todd R Williams, Daniel T Myers
Mucinous appendiceal neoplasms are uncommon, but important to recognize with imaging due to malignant potential. Peritoneal seeding and pseudomyxoma peritonei can occur with both frankly malignant as well as low-grade appendiceal neoplasms. Prospective imaging identification of potential appendiceal neoplasm is paramount to clinical/surgical management. When a mucinous appendiceal neoplasm is suspected, a right hemicolectomy with lymph node dissection is the preferred surgical management. Unfortunately, accurate preoperative diagnosis can be challenging due to a wide range of clinical presentations and overlapping imaging appearances of appendiceal neoplasms with benign entities...
March 21, 2018: Abdominal Radiology
Mohammad-Ali Abtahi, Alireza Zandi, Hassan Razmjoo, Sara Ghaffari, Seyed-Mojtaba Abtahi, Hamidreza Jahanbani-Ardakani, Zahra Kasaei, Samira Kasaei-Koupaei, Sepideh Sajjadi, Seyed-Ali Sonbolestan, Seyed-Hossein Abtahi
Purpose: Ameloblastoma is a non-encapsulated and slow-growing tumor with high recurrence rate. Orbital involvement by this neoplasm is an extremely rare entity. In this study, we present a systematic review on this situation along with clinical and paraclinical features of a case. Methods: An electronic search was conducted on major medical sources. Data of the cases in the literature in addition to our own case were extracted, summarized, and statistically analyzed...
March 2018: Journal of Current Ophthalmology
Folami Alamudun, Paige Paulus, Hong-Jun Yoon, Georgia Tourassi
Prior research has shown that physicians' medical decisions can be influenced by sequential context, particularly in cases where successive stimuli exhibit similar characteristics when analyzing medical images. This type of systematic error is known to psychophysicists as sequential context effect as it indicates that judgments are influenced by features of and decisions about the preceding case in the sequence of examined cases, rather than being based solely on the peculiarities unique to the present case...
July 2018: Journal of Medical Imaging
Wenyao Xia, Stephen L Breen
Image guidance with cone beam computed tomography in radiotherapy can guarantee the precision and accuracy of patient positioning prior to treatment delivery. During the image guidance process, operators need to take great effort to evaluate the image guidance quality before correcting a patient's position. This work proposes an image registration assessment method based on control chart monitoring to reduce the effort taken by the operator. According to the control chart plotted by daily registration scores of each patient, the proposed method can quickly detect both alignment errors and image quality inconsistency...
April 2018: Journal of Medical Imaging
Jun Han, Seok-Hyung Won, Jung-Taek Kim, Myung-Hoon Hahn, Ye-Yeon Won
Purpose: Femoroacetabular impingement (FAI) is considered an important cause of early degenerative arthritis development. Although three-dimensional (3D) imaging such as computed tomography (CT) and magnetic resonance imaging are considered precise imaging modalities for 3D morphology of FAI, they are associated with several limitations when used in out-patient clinics. The paucity of FAI morphologic data in Koreans makes it difficult to select the most effective radiographical method when screening for general orthopedic problems...
March 2018: Hip & Pelvis
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"