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Interesting CT brain

Selene Pozzebon, Aaron Blandino Ortiz, Federico Franchi, Stefano Cristallini, Mirko Belliato, Olivier Lheureux, Alexandre Brasseur, Jean-Louis Vincent, Sabino Scolletta, Jacques Creteur, Fabio Silvio Taccone
BACKGROUND: Acute cerebral complications (ACC) of veno-arterial extracorporeal membrane oxygenation (VA-ECMO) are associated with poor long-term neurologic outcome. We described the role of rSO2 monitoring in detecting ACC and desaturations and their relationship with poor outcome when employing VA-ECMO. METHODS: Retrospective analysis of patients monitored by cerebral frontal near-infrared spectroscopy (NIRS) (CAS Medical Systems Inc., Branford, CT, USA) during VA-ECMO (November 2008-December 2015)...
March 20, 2018: Neurocritical Care
Benjamin L Viglianti, Daniel J Wale, Ka Kit Wong, Timothy D Johnson, Christy Ky, Kirk A Frey, Milton D Gross
Purpose To examine the effect metabolic burden (tumor and/or cardiac myocyte uptake) has on fluorine 18 fluorodeoxyglucose (FDG) distribution in organs and tissues of interest. Materials and Methods Positron emission tomographic (PET)/computed tomographic (CT) scans at the Ann Arbor Veterans Affairs hospital from January to July 2015 were reviewed. A total of 107 scans (50 patients; mean age, 64.3 years ± 13.2 [standard deviation]) had metabolic tissue burden assessed by using total lesion glycolysis (TLG) obtained from autosegmentation of the tumor and/or cardiac tissue...
March 20, 2018: Radiology
Yifat Manor, Adi A Garfunkel
PURPOSE: To describe a rare case of odontogenic brain abscess. MATERIALS AND METHODS: A healthy, 35-year-old male had two dental implants placed in a simultaneously augmented maxillary sinus. One implant failed and the patient developed a maxillary sinusitis that failed to improve following antibiotic treatment at home. The neglected sinus infection led to formation of a brain abscess. The patient was hospitalised only when he had pan sinusitis with neurological signs...
2018: European Journal of Oral Implantology
N Naqos, R Belbaraka, A El Omrani, M Khouchani
During the esmo congress that took place from 08 to 12 September 2017 in Madrid, non-small cell lung cancer (NSCLC) was the subject of various communications and posters. We selected the most innovative and most likely to change our daily practice These updates presented concerned both localized and metastatic lung cancers. For completely resected localized stages minimal monitoring by annual CT scan is recommended, in stage III after radio chemotherapy durvalumab treatment provides better progression-free survival (PFS)...
March 8, 2018: Revue de Pneumologie Clinique
Adam M H Young, Joseph Donnelly, Xiuyun Liu, Mathew R Guilfoyle, Melvin Carew, Manuel Cabeleira, Danilo Cardim, Matthew R Garnett, Helen M Fernandes, Christina Haubrich, Peter Smielewski, Marek Czosnyka, Peter J Hutchinson, Shruti Agrawal
OBJECTIVE: Computed tomography (CT) of the brain can allow rapid assessment of intracranial pathology after traumatic brain injury (TBI). Frequently in paediatric TBI, CT imaging can fail to display the classical features of severe brain injury with raised intracranial pressure. The objective of this study was to determine early CT brain features that influence intracranial or systemic physiological trends following paediatric TBI. MATERIALS AND METHODS: Thirty-three patients (mean age, 10 years; range, 0...
2018: Acta Neurochirurgica. Supplement
Linnéa Lagerstedt, Juan José Egea-Guerrero, Ana Rodríguez-Rodríguez, Alejandro Bustamante, Joan Montaner, Amir El Rahal, Elisabeth Andereggen, Lara Rinaldi, Asita Sarrafzadeh, Karl Schaller, Jean-Charles Sanchez
Traumatic brain injury is a common event where 70%-90% will be classified as mild TBI (mTBI). Among these, only 10% will have a brain lesion visible via CT scan. A triage biomarker would help clinicians to identify patients with mTBI who are at risk of developing a brain lesion and require a CT scan. The brain cells damaged by the shearing, tearing and stretching of a TBI event set off inflammation cascades. These cause altered concentrations of a high number of both pro-inflammatory and anti-inflammatory proteins...
2018: PloS One
Ryuichi Nishii, Tatsuya Higashi, Shinya Kagawa, Chio Okuyama, Yoshihiko Kishibe, Masaaki Takahashi, Tomoko Okina, Norio Suzuki, Hiroshi Hasegawa, Yasuhiro Nagahama, Koichi Ishizu, Naoya Oishi, Hiroyuki Kimura, Hiroyuki Watanabe, Masahiro Ono, Hideo Saji, Hiroshi Yamauchi
OBJECTIVE: Recently, a benzofuran derivative for the imaging of β-amyloid plaques, 5-(5-(2-(2-(2-18 F-fluoroethoxy)ethoxy)ethoxy)benzofuran-2-yl)- N-methylpyridin-2-amine (18 F-FPYBF-2) has been validated as a tracer for amyloid imaging and it was found that18 F-FPYBF-2 PET/CT is a useful and reliable diagnostic tool for the evaluation of AD (Higashi et al. Ann Nucl Med, , 2018). The aim of this study was to assess the biodistribution and radiation dosimetry of diagnostic dosages of18 F-FPYBF-2 in normal healthy volunteers as a first-in-man study...
February 16, 2018: Annals of Nuclear Medicine
Sylvain Chantepie, Narinée Hovhannisyan, Stéphane Guillouet, Jean-Pierre Pelage, Méziane Ibazizene, Caroline Bodet-Milin, Thomas Carlier, Anne-Claire Gac, Emilie Réboursière, Jean-Pierre Vilque, Françoise Kraeber-Bodéré, Alain Manrique, Gandhi Damaj, Michel Leporrier, Louisa Barré
This is the first in-man clinical study of18 F-fludarabine which is a radiopharmaceutical for PET imaging in lymphoma where many issues remain controversial with the standard radiotracer18 F-FDG. Methods: 18 F-Fludarabine-PET(/CT) was performed in 10 patients: five with diffuse large B-cell lymphoma (DLBCL) and five with chronic lymphocytic leukemia (CLL). The biodistribution, and radiation dosimetry of18 F-fludarabine have also been evaluated. Six successive partial body PET scans were acquired for 250 min after intravenous 4 MBq/kg bolus of18 F-fludarabine...
February 1, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
Anne-Sophie Salabert, Erick Mora-Ramirez, Marie Beaurain, Mathieu Alonso, Charlotte Fontan, Hafid Belhadj Tahar, Marie Laure Boizeau, Mathieu Tafani, Manuel Bardiès, Pierre Payoux
INTRODUCTION: The aim of this work was to study the biodistribution, metabolism and radiation dosimetry of rats injected with [18F]FNM using PET/CT images. This novel radiotracer targeting NMDA receptor has potential for investigation for neurological and psychiatric diseases. METHODS: Free fraction and stability in fresh human plasma were determined in vitro. PET/CT was performed on anesthetized rats. Organs were identified and 3D volumes of interest (VOIs) were manually drawn on the CT in the center of each organ...
December 21, 2017: Nuclear Medicine and Biology
Agostino Chiaravalloti, Anna Elisa Castellano, Maria Ricci, Gaetano Barbagallo, Pasqualina Sannino, Francesco Ursini, Georgios Karalis, Orazio Schillaci
PURPOSE: The present study was aimed to investigate the relationships between dysfunction of cortical glucose metabolism as detectable by means of 2-deoxy-2-[18F]fluoro -D-glucose ([18F]FDG) positron emission tomography/x-ray computed tomography (PET/CT) and amyloid burden as detectable by means of 4-{(E)-2-[4-(2-{2-[2-[18F]fluoroethoxy]ethoxy}ethoxy)phenyl]vinyl}-N-methylaniline (florbetaben; [18F]FBB) in a group of patients affected by Alzheimer's disease (AD). PROCEDURES: We examined 38 patients newly diagnosed with AD according to the NINCDS-ADRDA criteria...
February 5, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
Clarice Sprinz, Matheus Zanon, Stephan Altmayer, Guilherme Watte, Klaus Irion, Edson Marchiori, Bruno Hochhegger
Our purpose was to evaluate the effect of glycemia on 18F-FDG uptake in normal organs of interest. The influences of other confounding factors, such as body mass index (BMI), diabetes, age, and sex, on the relationships between glycemia and organ-specific standardized uptake values (SUVs) were also investigated. We retrospectively identified 5623 consecutive patients who had undergone clinical PET/CT for oncological indications. Patients were stratified into groups based on glucose levels, measured immediately before 18F-FDG injection...
February 1, 2018: Scientific Reports
Julie Bolcaen, Benedicte Descamps, Tom Boterberg, Christian Vanhove, Ingeborg Goethals
For decades, small animal radiation research was mostly performed using fairly crude experimental setups applying simple single-beam techniques without the ability to target a specific or well-delineated tumor volume. The delivery of radiation was achieved using fixed radiation sources or linear accelerators producing megavoltage (MV) X-rays. These devices are unable to achieve sub-millimeter precision required for small animals. Furthermore, the high doses delivered to healthy surrounding tissue hamper response assessment...
December 28, 2017: Journal of Visualized Experiments: JoVE
Carl Marincowitz, Fiona E Lecky, William Townend, Aditya Borakati, Andrea Fabbri, Trevor A Sheldon
The optimal management of mild traumatic brain injury (TBI) patients with injuries identified by computed tomography (CT) brain scan is unclear. Some guidelines recommend hospital admission for an observation period of at least 24 h. Others argue that selected lower-risk patients can be discharged from the Emergency Department (ED). The objective of our review and meta-analysis was to estimate the risk of death, neurosurgical intervention, and clinical deterioration in mild TBI patients with injuries identified by CT brain scan, and assess which patient factors affect the risk of these outcomes...
January 11, 2018: Journal of Neurotrauma
F B Guo, C S Cai, W J Zhang, J S Hong, L Z Lan, X Y Chen
Objective: To calculate out the Hausdorff distance based on the scripting in RayStation treatment planning system, which was then applied in measuring the deformation error of brain stem during image automatic registration between CT and MR. Methods: Scripting was edited in RayStation system (version 4.7) by using IronPython. The set of point coordinates on the contour of any two region of interest (ROI) had been found firstly, then the Hausdorff distance between the two point sets was calculated out. A graphical user interface (GUI) was designed by using XAML to acquire the visualized output of Hausdorff distance...
December 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
Laura L Boles Ponto, Susan Walsh, Jiangeng Huang, Christine Mundt, Katherine Thede-Reynolds, G Leonard Watkins, John Sunderland, Michael Acevedo, Maureen Donovan
To illustrate the use of imaging to quantify the transfer of materials from the nasal cavity to other anatomical compartments, specifically, transfer to the brain using the thymidine analogue, [18 F]fluorothymidine (FLT), and the glucose analogue, [18 F]fluorodeoxyglucose (FDG). Anesthetized rats were administered FLT or FDG by intranasal instillation (IN) or tail-vein injection (IV). PET/CT imaging was performed for up to 60 min. Volumes-of-interest (VOIs) for the olfactory bulb (OB) and the remaining brain were created on the CT and transferred to the co-registered dynamic PET...
December 7, 2017: AAPS Journal
Rajiv Singh, Suzanne Mason, Fiona Lecky, Jeremy Dawson
OBJECTIVE: The objective is to measure the prevalence of depression after traumatic brain injury (TBI) and the features associated with increased risk in a cohort that reflects clinical practice. METHODS: Prospective TBI admissions to a large Teaching Hospital Emergency Department were recruited over a 2-year period. Assessments for depression and other psychosocial and global outcomes were completed at 3 months post-injury. Comparisons were made with demographic and injury features of interest to establish any associations of depression risk...
2018: Brain Injury: [BI]
Carl Marincowitz, Fiona Lecky, William Townend, Aditya Borakati, Trevor Sheldon
BACKGROUND: The optimal management of minor head injured patients with brain injury identified by CT imaging is unclear. Some guidelines recommend routine hospital admission of GCS13-15 patients with traumatic brain (TBI) injury identified by CT imaging. Others argue that selected lower-risk patients can be discharged from the Emergency Department (ED). OBJECTIVE: To estimate the risk of death, neurosurgery and clinical deterioration minor head injured patients with TBI identified by CT imaging, and assess which factors affect the risk of these outcomes...
December 2017: Emergency Medicine Journal: EMJ
L Lim, H Hart, M Mehta, A Worker, A Simmons, K Mirza, K Rubia
BACKGROUND: Childhood abuse is associated with abnormalities in brain structure and function. Few studies have investigated abuse-related brain abnormalities in medication-naïve, drug-free youth that also controlled for psychiatric comorbidities by inclusion of a psychiatric control group, which is crucial to disentangle the effects of abuse from those associated with the psychiatric conditions. METHODS: Cortical volume (CV), cortical thickness (CT) and surface area (SA) were measured in 22 age- and gender-matched medication-naïve youth (aged 13-20) exposed to childhood abuse, 19 psychiatric controls matched for psychiatric diagnoses and 27 healthy controls...
November 10, 2017: Psychological Medicine
Michael S Trotta, John Cocjin, Emily Whitehead, Srikanth Damera, John H Wittig, Ziad S Saad, Sara K Inati, Kareem A Zaghloul
Intracranial recordings captured from subdural electrodes in patients with drug resistant epilepsy offer clinicians and researchers a powerful tool for examining neural activity in the human brain with high spatial and temporal precision. There are two major challenges, however, to interpreting these signals both within and across individuals. Anatomical distortions following implantation make accurately identifying the electrode locations difficult. In addition, because each implant involves a unique configuration, comparing neural activity across individuals in a standardized manner has been limited to broad anatomical regions such as cortical lobes or gyri...
November 2, 2017: Human Brain Mapping
Yuichi Takahashi, Atsushi Sasahara, Kei Yamazaki, Mayuko Inazuka, Hidetoshi Kasuya
BACKGROUND: Delayed cerebral ischemia (DCI) is a serious complication following aneurysmal SAH (aSAH) and remains a leading cause of morbidity and mortality. We investigated whether data from CT perfusion (CTP) within 24 h after onset are associated with DCI and its outcome. METHODS: We retrospectively examined plain CT, CTP, and CT angiography (CTA) of aSAH patients on arrival. We measured the average mean transit time (aMTT) and compared it with several clinical factors, such as the age, WFNS grade, Fisher group, delayed cerebral infarction, cerebral vasospasm, and modified Rankin scale (mRS), at 1 month...
December 2017: Acta Neurochirurgica
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