Rapid Whole Brain Imaging Of Neural Activities In Freely
... positional information of the larval zebrafish, acquired from the tracking and autofocus system, was ...
... positional information of the larval zebrafish, acquired from the tracking and autofocus system, was ...
Abdominal CT: Comparison of Adaptive Statistical Iterative and
... scanner used in our study, we would have been required to adjust the noise index (a descriptor for desired image noise used on the scanner to adjust tube current), minimum tube current, and maximum tube current for each dose level. Second, these factors would have had to be tailored to individual pa ...
... scanner used in our study, we would have been required to adjust the noise index (a descriptor for desired image noise used on the scanner to adjust tube current), minimum tube current, and maximum tube current for each dose level. Second, these factors would have had to be tailored to individual pa ...
premium class image quality
... terms of axial, lateral and contrast resolution as well as penetration. Scanning at high frequencies of up to 20 MHz gives superb image quality for breast, small part, peripheral vascular and musculoskeletal scanning. Parallel quad-beam signal processing provides higher frame rates and resolution, t ...
... terms of axial, lateral and contrast resolution as well as penetration. Scanning at high frequencies of up to 20 MHz gives superb image quality for breast, small part, peripheral vascular and musculoskeletal scanning. Parallel quad-beam signal processing provides higher frame rates and resolution, t ...
The Effects of Organ-based Tube Current Modulation on Radiation
... 1895. Since then, X-rays have been used clinically all over the world for the study of bone fractures, kidney stones, lung cancer, tumors and other non-invasive diagnostic applications. The advent of computed tomography (CT) in 1971 was seen as a major advancement in diagnostic radiology where x-ray ...
... 1895. Since then, X-rays have been used clinically all over the world for the study of bone fractures, kidney stones, lung cancer, tumors and other non-invasive diagnostic applications. The advent of computed tomography (CT) in 1971 was seen as a major advancement in diagnostic radiology where x-ray ...
Review Article Use of Cone Beam Computed Tomography in
... is accomplished by using a rotating gantry to which an Xray source and detector are fixed. A divergent pyramidal- or cone-shaped source of ionizing radiation is directed through the middle of the area of interest onto an area X-ray detector on the opposite side of the patient. The X-ray source and d ...
... is accomplished by using a rotating gantry to which an Xray source and detector are fixed. A divergent pyramidal- or cone-shaped source of ionizing radiation is directed through the middle of the area of interest onto an area X-ray detector on the opposite side of the patient. The X-ray source and d ...
Diffusion-weighted MRI in the characterization of pleural effusions
... minutes after contrast administration) on fat suppressed T1W images have been defined (10). According to this study, EEs displayed significant enhancement. Although suggestive, this examination was not practical because of long examination times. The use of DWI in the thorax is hindered by limitatio ...
... minutes after contrast administration) on fat suppressed T1W images have been defined (10). According to this study, EEs displayed significant enhancement. Although suggestive, this examination was not practical because of long examination times. The use of DWI in the thorax is hindered by limitatio ...
IMRT verification by three-dimensional dose reconstruction
... showing the agreement between prescribed and measured exit doses to within 3%, and McNutt et al.,20,21 who used a convolution/superposition model, treating the EPID as part of an ‘‘extended phantom’’ to create portal dose images, showing agreement to within 4% 共2 SD兲. An iterative method was then us ...
... showing the agreement between prescribed and measured exit doses to within 3%, and McNutt et al.,20,21 who used a convolution/superposition model, treating the EPID as part of an ‘‘extended phantom’’ to create portal dose images, showing agreement to within 4% 共2 SD兲. An iterative method was then us ...
pdf
... Commonest benign tumours involving brachial plexus include neurofibroma & schwannoma. Multiple neurofibromas are seen in cases of neurofibromatosis type 1. Both of these have an oval orientation parallel to the long axis of the involved nerve with schwannoma maintaining an eccentric relation to the ...
... Commonest benign tumours involving brachial plexus include neurofibroma & schwannoma. Multiple neurofibromas are seen in cases of neurofibromatosis type 1. Both of these have an oval orientation parallel to the long axis of the involved nerve with schwannoma maintaining an eccentric relation to the ...
Advances in Magnetic Resonance Imaging: How They Are
... PCa with ECE (arrow). (B) MR spectroscopic imaging (MRSI) of tumour (blue box in [a]): high citrate (Ci), high choline (Ch) plus creatine (Cr). (C) MRSI of normal prostate area in right PZ (yellow box in [a]): high Ci, low Ch plus Cr. (D) Axial dynamic contrast-enhanced MR image showing leakage of c ...
... PCa with ECE (arrow). (B) MR spectroscopic imaging (MRSI) of tumour (blue box in [a]): high citrate (Ci), high choline (Ch) plus creatine (Cr). (C) MRSI of normal prostate area in right PZ (yellow box in [a]): high Ci, low Ch plus Cr. (D) Axial dynamic contrast-enhanced MR image showing leakage of c ...
Three Cases of Elongated Mandibular Coronoid Process with
... length of the coronoid process could be measured easily on 3D images. Axial scans revealed that the distance between the coronoid process and the inner face of the frontal part of the zygomatic bone may be important for limitation of mouth opening. Diagnosis of bilateral coronoid hyperplasia is ofte ...
... length of the coronoid process could be measured easily on 3D images. Axial scans revealed that the distance between the coronoid process and the inner face of the frontal part of the zygomatic bone may be important for limitation of mouth opening. Diagnosis of bilateral coronoid hyperplasia is ofte ...
The clinical role of magnetic resonance in cardiovascular disease
... Until it reaches this equilibrium position, a component of magnetization exists perpendicular to the applied magnetic field. This component can induce a radio signal at the frequency of precession in an aerial and such a signal is called the free induction decay. The net magnetization vector as it r ...
... Until it reaches this equilibrium position, a component of magnetization exists perpendicular to the applied magnetic field. This component can induce a radio signal at the frequency of precession in an aerial and such a signal is called the free induction decay. The net magnetization vector as it r ...
New Techniques for the Assessment of Regional Left - DIE
... were geared toward improving the accuracy of detection of baseline and/or induced regional wall motion abnormalities. One of the assumptions is that the combination of reduced LV wall thickening and reduced myocardial velocities can be used to accurately diagnose regional myocardial dysfunction. In ...
... were geared toward improving the accuracy of detection of baseline and/or induced regional wall motion abnormalities. One of the assumptions is that the combination of reduced LV wall thickening and reduced myocardial velocities can be used to accurately diagnose regional myocardial dysfunction. In ...
EANM/ESC guidelines for radionuclide imaging of cardiac function
... traditions, reimbursement, risk of complications, logistics, etc. Furthermore, new modalities or development within a modality [gating of MPS, cardiac CT, contrast MRI (cMRI), echocardiography, plasma atrial and brain natriuretic peptides (ANP and BNP)] may have a great impact on the clinical indica ...
... traditions, reimbursement, risk of complications, logistics, etc. Furthermore, new modalities or development within a modality [gating of MPS, cardiac CT, contrast MRI (cMRI), echocardiography, plasma atrial and brain natriuretic peptides (ANP and BNP)] may have a great impact on the clinical indica ...
Anal Fistula MR - Geisel School of Medicine
... areas of sepsis and secondary extensions, both of which contribute to the high rate of recurrence after surgery (3). Furthermore, MR imaging can be used to define the anatomic relationships of the fistula to predict the likelihood of postoperative fecal incontinence. Before the introduction of MR im ...
... areas of sepsis and secondary extensions, both of which contribute to the high rate of recurrence after surgery (3). Furthermore, MR imaging can be used to define the anatomic relationships of the fistula to predict the likelihood of postoperative fecal incontinence. Before the introduction of MR im ...
Society of Skeletal Radiology 38 Annual Meeting
... ItisthepolicyoftheRushUniversityMedicalCenterOfficeofInterprofessionalContinuingEducationtoensurethatits CEactivitiesareindependent,freeofcommercialbiasandbeyondthecontrolofpersonsororganizationswithan economicinterestininfluencingthecontentofCE.Everyone ...
... ItisthepolicyoftheRushUniversityMedicalCenterOfficeofInterprofessionalContinuingEducationtoensurethatits CEactivitiesareindependent,freeofcommercialbiasandbeyondthecontrolofpersonsororganizationswithan economicinterestininfluencingthecontentofCE.Everyone ...
Unlocking the Parathyroid Puzzle: A Detailed Look at
... commonly used imagining techniques currently employed ...
... commonly used imagining techniques currently employed ...
Comparison of the Accuracy of Cone Beam Computed Tomography
... racy of human cortical bone reconstruction using 3D CT scans. The model dimensional error in the coronal, sagittal, and axial directions displayed a mean of 0.21 mm, with a standard deviation of 0.12 mm and a maximum error of 0.47 mm.29 However, the results were most accurate when the slice thicknes ...
... racy of human cortical bone reconstruction using 3D CT scans. The model dimensional error in the coronal, sagittal, and axial directions displayed a mean of 0.21 mm, with a standard deviation of 0.12 mm and a maximum error of 0.47 mm.29 However, the results were most accurate when the slice thicknes ...
Radiological Protection in Paediatric Diagnostic and Interventional
... (7) Therefore, it is important for all patients, and particularly for infants and children, that all ...
... (7) Therefore, it is important for all patients, and particularly for infants and children, that all ...
Children`s (Pediatric) Ultrasound - Abdomen
... Ultrasound is safe and painless, and produces pictures of the inside of the body using sound waves. Ultrasound imaging, also called ultrasound scanning or sonography, involves the use of a small transducer (probe) and ultrasound gel placed directly on the skin. High-frequency sound waves are transmi ...
... Ultrasound is safe and painless, and produces pictures of the inside of the body using sound waves. Ultrasound imaging, also called ultrasound scanning or sonography, involves the use of a small transducer (probe) and ultrasound gel placed directly on the skin. High-frequency sound waves are transmi ...
NICIP Editorial Principles
... local/regional list, the SNOMED CT Clinical Imaging Management Group (CIMG) requested that this task be undertaken by the ‘central’ terminology service. It was agreed that a single list should be adopted for interim use in the newly installed ‘legacy’ systems. It was further recommended that the sta ...
... local/regional list, the SNOMED CT Clinical Imaging Management Group (CIMG) requested that this task be undertaken by the ‘central’ terminology service. It was agreed that a single list should be adopted for interim use in the newly installed ‘legacy’ systems. It was further recommended that the sta ...
maloca
... the choroidea as well. This progress is of great importance, since about 80 % of ocular melanoma are originated in the choroid. Many difficulties of OCT as motion artifacts, signal loss, and relative long acquisition times, respec tively, which were successfully addressed using enhanced-depth imagi ...
... the choroidea as well. This progress is of great importance, since about 80 % of ocular melanoma are originated in the choroid. Many difficulties of OCT as motion artifacts, signal loss, and relative long acquisition times, respec tively, which were successfully addressed using enhanced-depth imagi ...
PACS (picture archiving and communication systems): filmless
... allows the full gamut of computer tools to be used to manipulate and post-process the images (fig 1). Alteration of the contrast width and level allows soft tissue and bony structures to be well seen on a single exposure. For example, it often permits the left lower lobe to be assessed behind the le ...
... allows the full gamut of computer tools to be used to manipulate and post-process the images (fig 1). Alteration of the contrast width and level allows soft tissue and bony structures to be well seen on a single exposure. For example, it often permits the left lower lobe to be assessed behind the le ...
Lung Image Database Consortium: Developing a Resource for the
... msec per rotation. These scanners generate an extensive amount of image data per examination (3), but they have been shown to increase patient throughput (4). A single thoracic CT examination routinely generates more than 300 thinsection images from a single breath hold with state-of-the-art 16-sect ...
... msec per rotation. These scanners generate an extensive amount of image data per examination (3), but they have been shown to increase patient throughput (4). A single thoracic CT examination routinely generates more than 300 thinsection images from a single breath hold with state-of-the-art 16-sect ...
The management of imaging dose during image-guided
... Radiographic image guidance has emerged as the new paradigm for patient positioning, target localization, and external beam alignment in radiotherapy. Although widely varied in modality and method, all radiographic guidance techniques have one thing in common—they can give a significant radiation do ...
... Radiographic image guidance has emerged as the new paradigm for patient positioning, target localization, and external beam alignment in radiotherapy. Although widely varied in modality and method, all radiographic guidance techniques have one thing in common—they can give a significant radiation do ...
The management of imaging dose during image-guided
... Radiographic image guidance has emerged as the new paradigm for patient positioning, target localization, and external beam alignment in radiotherapy. Although widely varied in modality and method, all radiographic guidance techniques have one thing in common—they can give a significant radiation do ...
... Radiographic image guidance has emerged as the new paradigm for patient positioning, target localization, and external beam alignment in radiotherapy. Although widely varied in modality and method, all radiographic guidance techniques have one thing in common—they can give a significant radiation do ...
Positron emission tomography
Positron emission tomography (PET) is a nuclear medicine, functional imaging technique that produces a three-dimensional image of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide (tracer), which is introduced into the body on a biologically active molecule. Three-dimensional images of tracer concentration within the body are then constructed by computer analysis. In modern PET-CT scanners, three dimensional imaging is often accomplished with the aid of a CT X-ray scan performed on the patient during the same session, in the same machine.If the biologically active molecule chosen for PET is fluorodeoxyglucose (FDG), an analogue of glucose, the concentrations of tracer imaged will indicate tissue metabolic activity as it corresponds to the regional glucose uptake. Use of this tracer to explore the possibility of cancer metastasis (i.e., spreading to other sites) is the most common type of PET scan in standard medical care (90% of current scans). However, on a minority basis, many other radioactive tracers are used in PET to image the tissue concentration of other types of molecules of interest. One of the disadvantages of PET scanners is their operating cost.