Performance of Low-Dose Perfusion Scintigraphy and CT Pulmonary Angiography for Pulmonary Embolism in Pregnancy

CHEST Journal ◽  
2018 ◽  
Vol 153 (1) ◽  
pp. 152-160 ◽  
Author(s):  
Jean-Ju Sheen ◽  
Linda B. Haramati ◽  
Anna Natenzon ◽  
Hong Ma ◽  
Pamela Tropper ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Low Dose ◽  
Pulmonary Angiography ◽  
Ct Pulmonary Angiography ◽  
Perfusion Scintigraphy ◽  
In Pregnancy

A Systematic Review of Double Low-dose CT Pulmonary Angiography in Pulmonary Embolism

2019 ◽  
Vol 15 (5) ◽  
pp. 453-460 ◽  
Author(s):  
Sultan Aldosari ◽  
Zhonghua Sun
Keyword(s):  
Systematic Review ◽  
Pulmonary Embolism ◽  
Image Quality ◽  
Radiation Dose ◽  
Contrast Medium ◽  
Low Dose ◽  
Pulmonary Angiography ◽  
Ct Pulmonary Angiography ◽  
Low Contrast ◽  
Low Contrast Medium

Background: The aim of this study is to perform a systematic review of the feasibility and clinical application of double low-dose CT pulmonary angiography (CTPA) in the diagnosis of patients with suspected pulmonary embolism. Discussion: A total of 13 studies were found to meet selection criteria reporting both low radiation dose (70 or 80 kVp versus 100 or 120 kVp) and low contrast medium dose CTPA protocols. Lowdose CTPA resulted in radiation dose reduction from 29.6% to 87.5% in 12 studies (range: 0.4 to 23.5 mSv), while in one study, radiation dose was increased in the dual-energy CT group when compared to the standard 120 kVp group. CTPA with use of low contrast medium volume (range: 20 to 75 ml) was compared to standard CTPA (range: 50 to 101 ml) in 12 studies with reduction between 25 and 67%, while in the remaining study, low iodine concentration was used with 23% dose reduction achieved. Quantitative assessment of image quality (in terms of signal-to-noise ratio and contrast-to-noise ratio) showed that low-dose CTPA was associated with higher, lower and no change in image quality in 3, 3 and 6 studies, respectively when compared to the standard CTPA protocol. The subjective assessment indicated similar image quality in 11 studies between low-dose and standard CTPA groups, and improved image quality in 1 study with low-dose CTPA. Conclusion: This review shows that double low-dose CTPA is feasible in the diagnosis of pulmonary embolism with significant reductions in both radiation and contrast medium doses, without compromising diagnostic image quality.

Pulmonary Embolism in Pregnancy: CT Pulmonary Angiography Versus Perfusion Scanning

2010 ◽  
Vol 195 (3) ◽  
pp. W214-W220 ◽  
Author(s):  
Kaushik Shahir ◽  
Lawrence R. Goodman ◽  
Ardita Tali ◽  
Kristin M. Thorsen ◽  
Robert S. Hellman
Keyword(s):  
Pulmonary Embolism ◽  
Pulmonary Angiography ◽  
Ct Pulmonary Angiography ◽  
In Pregnancy

CT Pulmonary Angiography versus Ventilation-Perfusion Scintigraphy in Pregnancy: Implications from a UK Survey of Doctors' Knowledge of Radiation Exposure

Radiology ◽  
2006 ◽  
Vol 240 (3) ◽  
pp. 765-770 ◽  
Author(s):  
Ashley M. Groves ◽  
Stuart J. Yates ◽  
Thida Win ◽  
Irfan Kayani ◽  
Ferdia A. Gallagher ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Pulmonary Angiography ◽  
Ct Pulmonary Angiography ◽  
Perfusion Scintigraphy ◽  
In Pregnancy

CT pulmonary angiography and perfusion imaging for the diagnosis of pulmonary embolism in pregnancy: a multi-cycle audit

2016 ◽  
Vol 71 ◽  
pp. S11
Author(s):  
Neeral Patel ◽  
Rama Vancheeswaran ◽  
Nolan Walker ◽  
Ioanna Papadopolou ◽  
Claire Shakespeare ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Perfusion Imaging ◽  
Pulmonary Angiography ◽  
Ct Pulmonary Angiography ◽  
In Pregnancy
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