<b>MR Angiography with Sensitivity Encoding (SENSE) for Suspected Pulmonary Embolism:</b> Comparison with MDCT and Ventilation–Perfusion Scintigraphy

Ohno, Yoshiharu; Higashino, Takanori; Takenaka, Daisuke; Sugimoto, Kouji; Yoshikawa, Takeshi; Kawai, Hiroya; Fujii, Masahiko; Hatabu, Hiroto; Sugimura, Kazuro

doi:10.2214/ajr.183.1.1830091

Cited by 107 publications

(79 citation statements)

References 36 publications

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“…To reduce the total dose of gadolinium contrast media and yet obtain a sharp bolus profile for visualization of pulmonary perfusion, all patients were administered 5-10 mL of the gadolinium contrast media at a dose of 0.5 mmol/mL by means of a cubital vein at 5 mL/s with the same infusion system followed by 20 mL of saline solution at the same rate. The basic theory and application of time-resolved contrast enhanced MR angiography has been documented in a previous report (21). The time duration between dynamic contrast-enhanced perfusion MRI and timeresolved MR angiography was more than 10 min (mean 14 min, ranged from 10 to 20 min).…”

Section: Contrast-enhancedmentioning

confidence: 82%

“…As with the technical advances in CT, those in MR imaging have made it possible to obtain time-resolved or four-dimensional (4D) contrast-enhanced MR angiography or perfusion MRI from PTE patients (21)(22)(23)(24)(25). In addition, quantitative assessment of contrastenhanced perfusion MRI can help assess pulmonary physiology, pathophysiology, or disease severity of various pulmonary vascular diseases (22,(26)(27)(28).…”

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confidence: 99%

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Dynamic MR perfusion imaging: Capability for quantitative assessment of disease extent and prediction of outcome for patients with acute pulmonary thromboembolism

Ohno

Koyama

Matsumoto

et al. 2010

Magnetic Resonance Imaging

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Purpose: To compare directly the capabilities of multidetector-row computed tomography (MDCT) and MRI for disease severity assessment and outcome prediction for acute pulmonary thromboembolism (APTE) patients. Materials and Methods:Fifty consecutive APTE patients underwent MDCT, MR angiography, dynamic perfusion MRI, treatment and follow-up examination. Pulmonary blood flow (PBF), pulmonary blood volume, and mean transit time maps were generated from perfusion MRI, and all segmental parameters were determined by using region of interest measurements. Receiver operator curve analyses were used to determine the most accurate parameter for diagnosis of the APTE segment. Then, APTE index from perfusion MRI (PE perfusion MRI index), right ventricle/left ventricle (RV/LV) diameter ratio and APTE indexes from embolic burdens observed on MDCT (PE CT index) and MR angiography (PE MRA index) were calculated. Finally, ability to differentiate mortality (n ¼ 8) from survival (n ¼ 42) groups and to predict patient outcome were statistically assessed.Results: PBF was a significantly more accurate parameter than others (P < 0.05). When feasible threshold value was applied, specificity and accuracy of RV/LV diameter ratio and PE Perfusion MRI index were significantly higher than those of PE CT and PE MRA indexes (P < 0.05). Logistic regression analysis demonstrated that each index was a significant predictor (P < 0.05).Conclusion: Dynamic perfusion MRI can be effective for disease extent assessment and outcome prediction for APTE patients.

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Section: Contrast-enhancedmentioning

confidence: 82%

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confidence: 99%

Dynamic MR perfusion imaging: Capability for quantitative assessment of disease extent and prediction of outcome for patients with acute pulmonary thromboembolism

Ohno

Koyama

Matsumoto

et al. 2010

Magnetic Resonance Imaging

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“…(15) Although pulmonary embolism is the third leading acute cardiovascular disease (after myocardial infarction and stroke), it often goes undetected and is therefore responsible for thousands of deaths every year. (17)(18)(19) and pulmonary perfusion. These techniques have shortened MRA acquisition time, made it less susceptible to motion artifacts, and improved spatial resolution.…”

Section: Clinical Indications For Mri Of the Lung Detection And Charamentioning

confidence: 99%

Ressonância magnética de pulmão: um novo passo no estudo das doenças pulmonares

et al. 2012

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Magnetic resonance imaging (MRI) of the lung has progressed tremendously in recent years. Because of improvements in speed and image quality, MRI is now ready for routine clinical use. The main advantage of MRI of the lung is its unique combination of structural and functional assessment in a single imaging session. We review the three major clinical indications for MRI of the lung: staging of lung tumors; evaluation of pulmonary vascular disease; and investigation of pulmonary abnormalities in patients who should not be exposed to radiation.Keywords: Magnetic resonance imaging; Lung; Lung diseases; Carcinoma, non-small-cell lung; Lung diseases, interstitial; Pneumonia. ResumoA ressonância magnética (RM) de pulmão progrediu tremendamente nos últimos anos. Devido a melhorias na velocidade e na qualidade de imagens, a RM de pulmão hoje está pronta para a utilização clínica de rotina. A principal vantagem da RM de pulmão é a sua combinação exclusiva de avaliação estrutural e funcional em uma única sessão de imagens. Revisamos aqui as três principais indicações clínicas da RM de pulmão: o estadiamento de tumores pulmonares, a avaliação de doença vascular pulmonar e a investigação de anormalidades pulmonares em pacientes que não podem ser expostos à radiação.Descritores: Imagem por ressonância magnética; Pulmão; Pneumopatias; Carcinoma pulmonar de células não pequenas; Doenças pulmonares intersticiais; Pneumonia.

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“…(145,146) Although CT has maintained a primary role in the diagnosis of pulmonary embolism, the application of MRI for subsets of patients like pregnant women or those that will require follow-up imaging to assess response to therapy is now feasible with very high-resolution MR angiographic imaging. (147)(148)(149) In addition to the above described imaging techniques, MRI offers the possibility to assess perfusion of the lung vascular bed by ultra-fast imaging during the injection of Gadolinium contrast. (150,151) This enables direct visualization of regional perfusion, with the possibility of some form of quantification (though this is notoriously difficult in MRI due to signal-noise properties).…”

Section: Gadolinium-enhanced Imagingmentioning

confidence: 99%

Functional Imaging: CT and MRI

Beek

Hoffman

2008

Clinics in Chest Medicine

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Synopsis-Numerous imaging techniques permit evaluation of regional pulmonary function. Contrast-enhanced CT methods now allow assessment of vasculature and lung perfusion. Techniques using spirometric controlled MDCT allow for quantification of presence and distribution of parenchymal and airway pathology, Xenon gas can be employed to assess regional ventilation of the lungs and rapid bolus injections of iodinated contrast agent can provide quantitative measure of regional parenchymal perfusion. Advances in magnetic resonance imaging (MRI) of the lung include gadolinium-enhanced perfusion imaging and hyperpolarized helium imaging, which can allow imaging of pulmonary ventilation and .measurement of the size of emphysematous spaces.

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MR Angiography with Sensitivity Encoding (SENSE) for Suspected Pulmonary Embolism: Comparison with MDCT and Ventilation–Perfusion Scintigraphy

Abstract: Time-resolved MR angiography with SENSE is effective for the diagnosis of pulmonary embolism.

Cited by 107 publications

References 36 publications

Dynamic MR perfusion imaging: Capability for quantitative assessment of disease extent and prediction of outcome for patients with acute pulmonary thromboembolism

Dynamic MR perfusion imaging: Capability for quantitative assessment of disease extent and prediction of outcome for patients with acute pulmonary thromboembolism

Ressonância magnética de pulmão: um novo passo no estudo das doenças pulmonares

Functional Imaging: CT and MRI

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