Pulmonary hypertension MRI: Difference between revisions
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{{Pulmonary hypertension}} | {{Pulmonary hypertension}} | ||
{{CMG}}, Richard Channick, M.D.; '''Assistant Editor(s)-in-Chief:''' [[User:Ralph Matar|Ralph Matar]] | {{CMG}}, Richard Channick, M.D.; '''Assistant Editor(s)-in-Chief:''' [[User:Ralph Matar|Ralph Matar]] | ||
==Overview== | |||
== | ==MRI== | ||
Due to the important prognostic indicators of the function of the right ventricle in patients with PAH. Cardiac MR is performed in some patients to: | Due to the important prognostic indicators of the function of the right ventricle in patients with PAH. Cardiac MR is performed in some patients to: | ||
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Poor right ventricular function is indicated by the following according to the ACCF/AHA 2009 Expert consensus document on pulmonary hypertension: | Poor right ventricular function is indicated by the following according to the ACCF/AHA 2009 Expert consensus document on pulmonary hypertension: | ||
# | # '''Stroke volume''' ≤25ml/m^2. | ||
# | # '''Right ventricular end-diastolic volume''' ≥84ml/m^2( Most appropriate marker of right ventricular failure in the follow-up.) | ||
# | # '''Left ventricvular end-diastolic volume''' ≤40ml/m^2 | ||
*MRI has similar abilities to those of echocardiography in the diagnosis and treatment of patients with pulmonary hypertension. | *MRI has similar abilities to those of echocardiography in the diagnosis and treatment of patients with pulmonary hypertension. | ||
* | *'''Pulmonary artery stiffness''' measured by relative cross sectional area change ≤16% also has implications on mortality rate. | ||
==MRI Limitations include | ===MRI Limitations include=== | ||
1- Inability to perform breath hold. | 1- Inability to perform breath hold. | ||
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{{WikiDoc Help Menu}} | {{WikiDoc Help Menu}} | ||
{{WikiDoc Sources}} | {{WikiDoc Sources}} | ||
Revision as of 18:43, 27 August 2012
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Pulmonary Hypertension Microchapters |
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Pulmonary hypertension MRI On the Web |
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American Roentgen Ray Society Images of Pulmonary hypertension MRI |
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Risk calculators and risk factors for Pulmonary hypertension MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1], Richard Channick, M.D.; Assistant Editor(s)-in-Chief: Ralph Matar
Overview
MRI
Due to the important prognostic indicators of the function of the right ventricle in patients with PAH. Cardiac MR is performed in some patients to:
1-Accurately evaluate the size, morphology and function of the right ventricle. MRI has similar abilities to those of echocardiography in the diagnosis and treatment of patients with pulmonary hypertension.
2-Detect shunts contributing to pulmonary hypertension.
3-Detect acute and chronic pulmonary thromboembolic disease.
4-Distinguish between the pulmonary vasculature and mediastinal adenopathy when used with contrast enhancement.
5-Also used for follow-up of right heart hemodynamics for follow-up purposes.
Poor right ventricular function is indicated by the following according to the ACCF/AHA 2009 Expert consensus document on pulmonary hypertension:
- Stroke volume ≤25ml/m^2.
- Right ventricular end-diastolic volume ≥84ml/m^2( Most appropriate marker of right ventricular failure in the follow-up.)
- Left ventricvular end-diastolic volume ≤40ml/m^2
- MRI has similar abilities to those of echocardiography in the diagnosis and treatment of patients with pulmonary hypertension.
- Pulmonary artery stiffness measured by relative cross sectional area change ≤16% also has implications on mortality rate.
MRI Limitations include
1- Inability to perform breath hold.
2-Claustrophobia.
3- Incompatible hardware such as neurostimulators, cochlear implants, aneurysm clips, cardiac pacemakers and defibrillators.
4- Limited availability and cost.
5- Difficulty in assessing PA pressures.