keyword
MENU ▼
Read by QxMD icon Read
search

CT scan

keyword
https://www.readbyqxmd.com/read/27933567/impact-of-endoscopic-ultrasound-guided-fine-needle-aspiration-in-prospective-liver-transplant-recipients-with-hepatocellular-carcinoma-and-lymphadenopathy
#1
Narendra S Choudhary, Rajesh Puri, Sanjiv Saigal, Prashant Bhangui, Neeraj Saraf, Vinit Shah, Mukesh Nasa, Haimanti Sarin, Mridula Guleria, Randhir Sud, Arvinder S Soin
BACKGROUND: Diagnosis of metastatic disease is important in patients with cirrhosis and hepatocellular carcinoma (HCC) to prevent futile liver transplantation. Some of these patients have metastatic lymphadenopathy; however, it is difficult to perform percutaneous fine-needle aspiration due to presence of collateral and anatomic location. Endoscopic ultrasound (EUS)-guided fine-needle aspiration (FNA) of lymph nodes offers several advantages like real-time vision, proximity to target, and avoidance of collaterals...
December 8, 2016: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/27933477/impact-of-low-energy-ct-imaging-on-selection-of-positive-oral-contrast-media-concentration
#2
Manuel Patino, Diana J Murcia, Andrea Prochowski Iamurri, Avinash R Kambadakone, Peter F Hahn, Dushyant V Sahani
OBJECTIVES: To determine to what extent low-energy CT imaging affects attenuation of gastrointestinal tract (GIT) opacified with positive oral contrast media (OCM). Second, to establish optimal OCM concentrations for low-energy diagnostic CT exams. METHODS: One hundred patients (38 men and 62 women; age 62 ± 11 years; BMI 26 ± 5) with positive OCM-enhanced 120-kVp single-energy CT (SECT), and follow-up 100-kVp acquisitions (group A; n = 50), or 40-70-keV reconstructions from rapid kV switching-single-source dual-energy CT (ssDECT) (group B; n = 50) were included...
December 8, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27933282/myocardial-perfusion-scintigraphy-dosimetry-optimal-use-of-spect-and-spect-ct-technologies-in-stress-first-imaging-protocol
#3
REVIEW
M Lecchi, S Malaspina, C Scabbio, V Gaudieri, A Del Sole
PURPOSE: Over the past decade, nuclear medicine experts have been seeking to minimize patient exposure to radiation in myocardial perfusion scintigraphy (MPS). This review describes the latest technological innovations in MPS, particularly with regard to dose reduction. METHODS: We searched in PubMed for original clinical papers in English, published after 2008, using the following research criteria: (dose) and ((reduction) or (reducing)) and ((myocardial) or (cardiac) or (heart)) and ((nuclear medicine) or (nuclear imaging) or (radionuclide) or (scintigraphy) or (SPET) or (SPECT))...
2016: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27933280/bone-imaging-in-prostate-cancer-the-evolving-roles-of-nuclear-medicine-and-radiology
#4
REVIEW
Gary J R Cook, Gurdip Azad, Anwar R Padhani
The bone scan continues to be recommended for both the staging and therapy response assessment of skeletal metastases from prostate cancer. However, it is widely recognised that bone scans have limited sensitivity for disease detection and is both insensitive and non-specific for determining treatment response, at an early enough time point to be clinically useful. We, therefore, review the evolving roles of nuclear medicine and radiology for this application. We have reviewed the published literature reporting recent developments in imaging bone metastases in prostate cancer, and provide a balanced synopsis of the state of the art...
2016: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27932861/interactive-navigation-guided-ophthalmic-plastic-surgery-assessment-of-optical-versus-electromagnetic-modes-and-role-of-dynamic-reference-frame-location-using-navigation-enabled-human-skulls
#5
Mohammad Javed Ali, Milind N Naik, Chetan Mallikarjuniah Girish, Mohammad Hasnat Ali, Swathi Kaliki, Tarjani Vivek Dave, Gautam Dendukuri
AIM: The aim of this study was to assess the anatomical accuracy of navigation technology in localizing defined anatomic landmarks within the orbit with respect to type of technology (optical versus electromagnetic systems) and position of the dynamic reference marker on the skull (vertex, temporal, parietal, and mastoid) using in vitro navigation-enabled human skulls. The role of this model as a possible learning tool for anatomicoradiological correlations was also assessed. METHODS: Computed tomography (CT) scans were performed on three cadaveric human skulls using the standard image-guidance acquisition protocols...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27932750/-a-case-report-of-spontaneous-cerebrospinal-fluid-otorrhea
#6
Hidenori Anami, Shigeru Ikeda, Kotaro Nakaya, Makoto Sugiura, Takakazu Kawamata
Spontaneous cerebrospinal fluid(CSF)otorrhea is less common than CSF leakage caused by trauma, and rarely occurs in adults. We report an adult case of CSF otorrhea. A 71-year-old woman with no traumatic or otologic history was hospitalized due to bacterial meningitis. After hospitalization, CSF leakage started suddenly from the left external ear canal. A high resolution CT scan with intrathecal administration of contrast material revealed CSF leakage in the left ear canal and multiple bone erosions in both the tegmen mastoideum and the posterior fossa aspect of the petrous bone...
December 2016: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/27932749/-hemorrhage-from-an-angiographically-obliterated-arteriovenous-malformation-after-gamma-knife-radiosurgery-an-immunohistochemistry-study
#7
Saori Hamada, Daina Kashiwazaki, Tetsuhiro Kamo, Takahiro Tomita, Naoki Akioka, Naoya Kuwayama, Satoshi Kuroda
A 24-year-old woman was diagnosed with a cerebral arteriovenous malformation(AVM)in the right parietal lobe(Spetzler-Martin grade I). The AVM was treated with stereotactic radiosurgery and was observed to have completely disappeared 3 years after radiosurgery. At the age of 35 years, the patient complained of a headache, and was referred to our hospital. A plain CT scan demonstrated a large cyst with niveau formation in the right parietal lobe. Cerebral angiography identified no recurrence of AVM. However, contrast MRI revealed an enhanced lesion on the surface of the cyst...
December 2016: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/27932557/quantitative-parameters-in-psma-targeted-pet-imaging-with-18f-dcfpyl-variability-in-normal-organ-uptake
#8
Xin Li, Steven P Rowe, Jeffrey P Leal, Michael A Gorin, Mohamad E Allaf, Ashley E Ross, Kenneth J Pienta, Martin A Lodge, Martin G Pomper
PURPOSE: (18)F-DCFPyL is a small-molecule inhibitor of the prostate-specific membrane antigen (PSMA) that has shown promise for evaluation of primary and metastatic prostate cancer (PC) using positron emission tomography (PET). Measuring the variability in normal organ uptake of (18)F-DCFPyL is necessary to understand its biodistribution, aid image interpretation, judge the reliability of scan quantification, and to provide a basis for therapeutic monitoring. METHODS: 65 consecutive (18)F-DCFPyL PET/CT scans from 64 patients with a history of PC were analyzed...
December 8, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27932435/radical-resection-and-improvised-surgical-reconstruction-for-a-rare-malignant-triton-tumour-of-intercostal-nerve-in-a-patient-with-neurofibromatosis-type-1
#9
Ikram Ulhaq Chaudhry, Ahsan Iqbal Cheema, Hadi Mutari, Samir S Amr
A man aged 28 years, with neurofibromatosis type 1, presented with abdominal pain and visible right lower chest swelling. He had cutaneous neurofibromas and several café-au-lait spots. CT scan of the chest and abdomen revealed a giant mass most likely originating from the right 7th intercostal nerve, extending downwards into the abdomen causing massive hepatic compression. A Trucut biopsy showed malignant peripheral nerve sheath tumour. Radical surgical resection with wide margins was performed. The chest wall and diaphragm were reconstructed with improvised surgical technique with excellent results...
December 8, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27932051/functional-and-exercise-limitations-after-a-first-episode-of-pulmonary-embolism-results-of-the-elope-prospective-cohort-study
#10
Susan R Kahn, Andrew M Hirsch, Arash Akaberi, Paul Hernandez, David R Anderson, Philip S Wells, Marc Rodger, Susan Solymoss, Michael J Kovacs, Lawrence Rudski, Avi Shimony, Carole Dennie, Christopher Rush, William H Geerts, Shawn D Aaron, John T Granton
BACKGROUND: We aimed to determine the frequency and predictors of exercise limitation after pulmonary embolism (PE), and to assess its association with health-related quality of life (HRQOL) and dyspnea. METHODS: 100 patients with acute PE were recruited at five Canadian hospitals from 2010-2013. Cardiopulmonary exercise testing (CPET) was performed at 1 and 12 months. Quality of life, dyspnea, six-minute walk distance (6MWD), residual clot burden (perfusion (Q) scan; CT pulmonary angiography (CTPA)), cardiac function (echocardiogram) and pulmonary function tests (PFT) were measured during follow-up...
December 5, 2016: Chest
https://www.readbyqxmd.com/read/27931956/diagnosis-and-management-of-rheumatoid-arthritis-what-is-the-current-role-of-established-and-new-imaging-techniques-in-clinical-practice
#11
REVIEW
Maria Antonietta D'Agostino, Espen A Haavardsholm, Conny J van der Laken
Ultrasound and magnetic resonance imaging (MRI) have become established imaging techniques for the management of rheumatoid arthritis. Several publications have pointed out the advantages of these techniques for a more complete evaluation of the inflammation and structural damage at joint level. Recently new imaging techniques as the positron emission tomography (PET) associated with computed tomography (CT) or MRI scan, and the optical imaging have been introduced in the panorama. This article presents the advantages and limitations of each imaging techniques in light with the recent publications...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27931120/outcomes-of-csf-spectrophotometry-in-cases-of-suspected-subarachnoid-haemorrhage-with-negative-ct-two-years-retrospective-review-in-a-birmingham-hospital
#12
A Bakr, D Silva, R Cramb, G Flint, M Foroughi
AIM: The aim of this study was to evaluate the adherence to current guidelines for the investigation of suspected subarachnoid haemorrhage and the prevalence and outcome of computed tomography (CT)-negative aneurysmal subarachnoid haemorrhage. DESIGN: A retrospective review in a single large tertiary referral centre. SUBJECTS: A total of 796 patients, aged 16-90 years, who underwent lumbar puncture (LP) for suspected subarachnoid haemorrhage (SAH) following a negative or equivocal CT scan between January 2012 and November 2013 (23 months)...
December 8, 2016: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/27931089/prognostic-implications-of-epicardial-fat-volume-quantification-in-acute-pericarditis
#13
George Lazaros, Alexios S Antonopoulos, Evangelos K Oikonomou, Panagiotis Vasileiou, Evangelos Oikonomou, Evangelia Stroumpouli, Apostolos Karavidas, Charalambos Antoniades, Dimitris Tousoulis
BACKGROUND: The pathophysiology of acute pericarditis remains largely unknown and biomarkers are needed to identify patients susceptible to complications. Since adipose tissue has a pivotal role in cardiovascular disease pathogenesis, we hypothesized that quantification of epicardial fat volume (EFV) provides prognostic information in patients with acute pericarditis. MATERIALS AND METHODS: Fifty (n=50) patients with first diagnosis of acute pericarditis were enrolled in this study...
December 8, 2016: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27931056/-guideline-s2k-awmf-of-the-deutsche-gesellschaft-f%C3%A3-r-pneumologie-und-beatmungsmedizin-and-the-deutsche-gesellschaft-f%C3%A3-r-arbeitsmedizin-und-umweltmedizin-diagnostics-and-expert-opinion-in-the-occupational-disease-no-4101-silicosis-including-coal-worker-s-pneumoconiosis
#14
X Baur, M Heger, R M Bohle, K G Hering, K Hofmann-Preiß, D Nowak, A Tannapfel, H Teschler, T Voshaar, T Kraus
During the last 1.5 years an update of the guideline on silicosis was made by an interdisciplinary working group. New medical and scientific knowledge and the experience in expert opinion practice were taken into account.By preparing the initial guideline in 2010 standardization of diagnostics and adaption of the "Moers convention" which was not based on medical knowledge was in the focus, whereas the current update deals with fine emendation and extension, especially of the compensation rate (adaption with the Reichenhall recommendation)...
December 2016: Pneumologie
https://www.readbyqxmd.com/read/27931007/a-case-report-of-unusual-pneumomediastinum-after-endoscopic-sinus-surgery
#15
Ahmad I Alomari, Firas Q Alzoubi, Abdullah Khatatbeh
INTRODUCTION: Endoscopic sinus surgery is a minimally invasive procedure used to restore normal sinus ventilation and mucociliary function. It is a routine otolaryngology procedure with a success rate of about 90% for symptomatic improvement in patients with refractory chronic rhinosinusitis. Because of the proximity of the paranasal sinuses to the brain and the orbit, it cannot be performed without a potential risk of complications. In our case, without early clinical suspicion, proper diagnosis and management, this unusual occurrence of pneumomediastinum after endoscopic sinus surgery may have led to major complications or even death...
November 19, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27930855/diagnosis-and-management-of-ovarian-vein-thrombosis-in-a-healthy-individual-a-case-report-and-a-literature-review
#16
Namratha Kodali, Irina Veytsman, Sabrina Martyr, Kit Lu
Ovarian vein thrombosis (OVT) is a rare condition most often seen in the immediate post-partum period. We report a 40-year-old woman with no significant past medical or surgical history who presented to the emergency room for acute right lower quadrant pain of one day duration. A computed tomography (CT) scan showed a normal appendix but a new finding of right ovarian venous thrombosis. To date, only nine cases of idiopathic OVT have been reported. In this case report, we report a summary of these cases and review of literature regarding management of OVT...
December 8, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27930504/aberrant-hepatic-arteries-running-through-pancreatic-parenchyma-encountered-during-pancreatoduodenectomy-two-rare-case-reports-and-strategies-for-surgical-treatment
#17
Lei Wang, Jianwei Xu, Dong Sun, Zongli Zhang
BACKGROUND: Aberrant hepatic arteries (HAs) encountered during pancreatoduodenectomy are difficult to manage. MEHTODS: Two cases with rare types of aberrant HA running through the pancreatic parenchyma were reviewed. RESULTS: The first case, a 68-year-old man, was admitted with obstructive jaundice. A tumor of the pancreatic head and aberrant HAs were suspected on computed tomography (CT) scan. At laparotomy, a new variation was identified; namely, 2 aberrant arteries-a right replaced HA and middle HA (RMHA) that both originated from the superior mesenteric artery (SMA) and ran via intrapancreatic paths posterior and anterior to the pancreatic head, respectively...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27929508/development-of-a-universal-medical-x-ray-imaging-phantom-prototype
#18
Annemari Groenewald, Willem A Groenewald
Diagnostic X-ray imaging depends on the maintenance of image quality that allows for proper diagnosis of medical conditions. Maintenance of image quality requires quality assurance programs on the various X-ray modalities, which consist of pro-jection radiography (including mobile X-ray units), fluoroscopy, mammography, and computed tomography (CT) scanning. Currently a variety of modality-specific phantoms are used to perform quality assurance (QA) tests. These phantoms are not only expensive, but suitably trained personnel are needed to successfully use them and interpret the results...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27929506/dose-reduction-in-ct-urography-and-vasculature-phantom-studies-using-model-based-iterative-reconstruction
#19
Leland Page, Wei Wei, Vikas Kundra, John Rong
To evaluate the feasibility of radiation dose reduction using model-based iterative reconstruction (MBIR) for evaluating the ureters and vasculature in a phantom, a tissue-equivalent CT dose phantom was scanned using a 64-channel CT scan-ner. Tubes of varying diameters filled with different dilutions of a contrast agent, simulating ureters or vessels, were inserted into the center of the phantom. Each combination was scanned using an existing renal protocol at 140 kVp or 120 kVp, yielding a display volumetric CT dose index (CTDIvol) of 24 mGy...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27929495/investigation-of-dosimetric-differences-between-the-tmr-10-and-convolution-algorithm-for-gamma-knife-stereotactic-radiosurgery
#20
Alvaro Rojas-Villabona, Neil Kitchen, Ian Paddick
Since its inception, doses applied using Gamma Knife Radiosurgery (GKR) have been calculated using a simple TMR algorithm, which assumes the patient's head is of even density, the same as water. This results in a significant approximation of the dose delivered by the Gamma Knife. We investigated how GKR dose cal-culations varied when using a new convolution algorithm clinically available for GKR planning that takes into account density variations in the head compared with the established calculation algorithm...
November 8, 2016: Journal of Applied Clinical Medical Physics
keyword
keyword
4019
1
2
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"