Preprints (not yet peer-reviewed)

39 downloads
121 views

Backround: frequent introduction of new dental instruments or devices into the market has been a concern for dentists worldwide, as the prices of such instruments are generally high, especially in developing countries. In addition, the use of these tools requires...

["Dentistry","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.26641v1
64 downloads
198 views

Identifying the separate parts in ultrasound images such as bone and skin plays the crucial role in synovitis detection task. This paper presents a detector of bone and skin regions in the form of a classifier which is trained on a set of annotated images. Selected...

["Orthopedics","Radiology and Medical Imaging","Rheumatology","Human-Computer Interaction","Computational Science"]
doi:10.7287/peerj.preprints.3519v1
40 downloads
182 views

Objective: This study aims to compare the sensitivity of dual phase (non-contrast and arterial) versus single phase (arterial) CT for detection of hyper-functioning parathyroid glands in patients with primary hyperparathyroidism. Methods: The CT scans of thirty-two...

["Diabetes and Endocrinology","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.3058v1
170 downloads
921 views

The involvement of the right and left hemispheres in mediating language functions has been measured in a variety of ways over the centuries since the relative dominance of the left hemisphere was first known. Functional magnetic resonance imaging (fMRI) presents...

["Neuroscience","Neurology","Psychiatry and Psychology","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.2962v2
114 downloads
369 views

Background: Traditionally, EBRT prostate treatments have been administered using three different techniques: three-dimensional conformal radiation therapy (3D-CRT), intensity modulated radiation therapy (IMRT), and volumetric modulated arc therapy (VMAT). These...

["Oncology","Radiology and Medical Imaging","Translational Medicine"]
doi:10.7287/peerj.preprints.2938v1
249 downloads
299 views

Background: The gamma analysis index (γ) is the most commonly used method to compare a calculated and measured dose distribution. A caveat to the clinical use of γ is that the formalism does have a sensitivity to noise present in either distribution. Monte Carlo...

["Oncology","Radiology and Medical Imaging","Translational Medicine"]
doi:10.7287/peerj.preprints.2904v1
106 downloads
330 views

Background: Bilingualism is a universal phenomenon. Study of bilingual brain has provided evidence to probable advantageous outcomes of early second language learning and brain structural correlates to these outcomes. Preservation of cognitive function with aging...

["Neuroscience","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.2853v1
109 downloads
297 views

We studied the effect of linearization on the repeatability of the Tofts and reference region models (RRM) for Dynamic Contrast-Enhanced MRI (DCE MRI). We compared the repeatabilities of these two linearized models, the standard non-linear version, and semi-quantitative...

["Mathematical Biology","Radiology and Medical Imaging","Statistics"]
doi:10.7287/peerj.preprints.2824v1
60 downloads
280 views

We comment on the recent developments and problems of three-dimensional printing in cardiology. Since there are currently no standards or consensuses for 3D printing in clinical medicine and the technology is at its infancy in cardiology, it’s very important to...

["Anatomy and Physiology","Cardiology","Clinical Trials","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.2597v1
148 downloads
440 views

Myelin is a critical component of the nervous system and a major contributor to contrast in Magnetic Resonance (MR) images. However the precise contribution of myelination to multiple MR modalities is still under debate. The cuprizone mouse is a well established...

["Neuroscience","Radiology and Medical Imaging","Histology"]
doi:10.7287/peerj.preprints.2323v1
492 downloads
1,430 views

Three-dimensional (3D) data of many kinds is produced at an increasing rate throughout all scientific disciplines. The Portable Document Format (PDF) is the de-facto standard for the exchange of electronic documents and allows for embedding three-dimensional models....

["Radiology and Medical Imaging","Science and Medical Education"]
doi:10.7287/peerj.preprints.1594v4
417 downloads
2,309 views

Background. Imaging biomarkers hold tremendous promise in the precision medicine clinical applications. Development of such biomarkers relies heavily on image post-processing tools for automated image quantitation. Their deployment in the context of clinical research...

["Bioinformatics","Clinical Trials","Oncology","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.1541v3
162 downloads
361 views

Background: Ketamine has been reported to have efficacy as an antidepressant in several studies of treatment-resistant depression. In this study, we investigate whether an acute administration of ketamine leads to reductions in the functional connectivity of subgenual...

["Neuroscience","Psychiatry and Psychology","Radiology and Medical Imaging","Computational Science"]
doi:10.7287/peerj.preprints.1436v1
250 downloads
344 views

Introduction. Conversion of images from DICOM format to other image formats affects measuring distances in images. Materials and methods. Distances in DICOM or JPEG images were measured with different zoom using 1.5T MRI scanning of human diaphragm during spontaneous...

["Anatomy and Physiology","Evidence Based Medicine","Radiology and Medical Imaging"]
doi:10.7287/peerj.preprints.1383v1
139 downloads
838 views

Introduction The relationship between participant motion, demographic variables and MRI-derived morphometric estimates was investigated in autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD) and schizophrenia. Participant motion was...

["Bioinformatics","Neurology","Psychiatry and Psychology","Radiology and Medical Imaging","Statistics"]
doi:10.7287/peerj.preprints.1363v1
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