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Clinical utility of ultra high pitch dual source thoracic CT imaging of acute pulmonary embolism in the emergency department: are we one step closer towards a non-gated triple rule out?

https://arctichealth.org/en/permalink/ahliterature113301
Source
Eur J Radiol. 2013 Oct;82(10):1793-8
Publication Type
Article
Date
Oct-2013
Author
Daniel J Hou
David K Tso
Chris Davison
Joao Inacio
Luck J Louis
Savvakis Nicolaou
Anja J Reimann
Author Affiliation
Department of Radiology, Faculty of Medicine, University of British Columbia, 3350-950 W 10th Avenue, Vancouver BC V5Z 4E3 Canada. danieljameshou@gmail.com
Source
Eur J Radiol. 2013 Oct;82(10):1793-8
Date
Oct-2013
Language
English
Publication Type
Article
Keywords
Acute Disease
Adult
Aged
Aged, 80 and over
Angiography - statistics & numerical data
Artifacts
British Columbia - epidemiology
Emergency Medical Services - statistics & numerical data
Emergency Service, Hospital - statistics & numerical data
Female
Humans
Male
Middle Aged
Prevalence
Pulmonary Embolism - epidemiology - radiography
Radiation Dosage
Radiography, Dual-Energy Scanned Projection - statistics & numerical data
Radiography, Thoracic - statistics & numerical data
Reproducibility of Results
Respiratory-Gated Imaging Techniques - statistics & numerical data
Risk assessment
Sensitivity and specificity
Tomography, X-Ray Computed - statistics & numerical data
Young Adult
Abstract
Aim of this study was to retrospectively compare the image quality and the radiation dose of an ultra high pitch CT scan for the evaluation of pulmonary embolism and visualization of cardiac structures in comparison to our institution's standard pulmonary embolism protocol.
The study cohort consisted of 115 consecutive patients, 57 underwent CT pulmonary angiography on a dual source 128 slice scanner (Siemens Somatom Definition FLASH) via an ultra high pitch mode (Pitch 2.8) while 58 were scanned on a dual source 64 slice scanner (Siemens Somatom Definition Dual Source) with standard pitch (Pitch 0.9). Qualitative image assessment was determined by two blinded radiologists with 3 and 15 years' experience in chest and cardiac CT. Quantitative image assessment was determined by the signal to noise ratio (SNR) and contrast to noise ratio (CNR). Effective radiation dose was calculated via the product of the dose length product.
For the ultra high pitch protocol, 14% (8/57) were positive for pulmonary embolus compared to 13.7% (8/58) for the standard pitch group. 98.2% of the ultra high pitch scans were diagnostic for pulmonary embolus vs. 94.8% of the standard protocol. Visualization of cardiac structures was significantly improved with the ultra high pitch protocol (p
PubMed ID
23743054 View in PubMed
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The incidence of pulmonary non-tuberculous mycobacteria in British Columbia, Canada.

https://arctichealth.org/en/permalink/ahliterature148768
Source
Int J Tuberc Lung Dis. 2009 Sep;13(9):1086-93
Publication Type
Article
Date
Sep-2009
Author
E. Hernández-Garduño
M. Rodrigues
R K Elwood
Author Affiliation
Department of TB Control, British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada. eduardo.hernandez@bccdc.ca
Source
Int J Tuberc Lung Dis. 2009 Sep;13(9):1086-93
Date
Sep-2009
Language
English
Publication Type
Article
Keywords
Artifacts
Bacteriological Techniques
British Columbia - epidemiology
Government Agencies
Humans
Incidence
Mycobacterium Infections, Nontuberculous - diagnosis - epidemiology - microbiology
Mycobacterium avium Complex - isolation & purification
Mycobacterium avium-intracellulare Infection - epidemiology
Nontuberculous Mycobacteria - isolation & purification
Predictive value of tests
Time Factors
Abstract
British Columbia Centre for Disease Control (BCCDC), Vancouver, Canada.
To determine the incidence of non-tuberculous mycobacteria (NTM) and to assess the impact of new laboratory techniques.
Population-based study of all subjects with positive cultures for NTM from 1990 to 2006.
Mycobacterium avium complex (MAC) was the most common NTM isolate (77%). The median incidence rates per 100 000 population in the total sample were respectively 6.7, 4.5 and
PubMed ID
19723396 View in PubMed
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