High Speed Rotating Scanner for Transesophageal Cross-Sectional Echocardiography

Hisanaga, Kohzoh; Hisanaga, Asako; Hibi, Norio; Nishimura, Kinya; Kambe, Tadashi

doi:10.1016/0002-9149(80)90437-3

Cited by 74 publications

(16 citation statements)

References 6 publications

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“…The regression analysis showed that, on an average, there was little difference between echocardiographic and surgical measurement of atrial septal defect size, confirming the higher spatial resolution of the system. Several echocardiographic contrast studies' [7][8][9][10][11][12][13][14][15][16][17][18][19] have shown that even with a predominant left to right shunt a small amount of contrast passes from the right into the left atrium in the majority of patients with atrial septal defects. This finding was confirmed in our study with a sensitivity of 1000/o for the transoesophageal examination.…”

Section: Discussionmentioning

confidence: 99%

“…16 Because, however, the ultrasonic beams generally do not hit the interatrial septum perpendicularly, echo dropouts quite frequently give false positive appearances of septal defects.78 Even though the subcostal transducer position does put the interatrial septum perpendicular to the sound energy, reliable detection of an atrial septal defect remains difficult in adults and is less successful than in children.…”

mentioning

confidence: 99%

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Detection of ostium secundum atrial septal defects by transoesophageal cross-sectional echocardiography.

Hanrath¹,

Schlüter²,

Langenstein³

et al. 1983

Heart

122

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Transoesophageal cross-sectional echocardiography has special advantages when investigating the interatrial septum which is imaged perpendicularly without echo dropouts from an oesophageal transducer position. The technique was successfully used in 19 out of 20 patients (95%) with an ostium secundum atrial septal defect and in 30 control subjects. In all of the latter the interatrial septum was visualised as a continuous echo structure separating the atria, whereas a distinct discontinuity representing the septal defect was apparent in all patients with atrial septal defect. Echocardiographic measurement of the defect size correlated well with surgical findings in 11 patients who underwent open heart surgery in the course of this study. In a comparative transthoracic examination, adequate recordings were obtained in 18 of the 20 patients and in 26 of the 30 control subjects. Direct subcostal visualisation of the defect was reliable in 10 of 18 patients. Peripheral venous contrast studies were also performed with the transoesophageal as well as the transthoracic technique. Echo contrast remained confined to the right heart in the control subjects. Left sided contrast appearance diagnostic of an interatrial communication was shown in the patients using the transoesophageal technique (100% sensitivity), with an additional right atrial negative contrast apparent in seven patients. The transthoracic approach, on the other hand, showed left sided echo contrast in 14 of 18 patients and an additional negative contrast effect in two of the 14. It is concluded that transoesophageal is superior to transthoracic cross-sectional echocardiography as a highly sensitive method for the detection and evaluation of ostium secundum atrial septal defects.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Detection of ostium secundum atrial septal defects by transoesophageal cross-sectional echocardiography.

Hanrath¹,

Schlüter²,

Langenstein³

et al. 1983

Heart

122

View full text Add to dashboard Cite

show abstract

“…However, this is not the case when echo signals obtained are poor in quality. To over come this limitation of the transthoracic approach, transesophageal echocardiography was developed [1][2][3][4], In this report we describe 10 representative cross-sec tional views, and the clinical usefulness of the trans esophageal transducers which have M-mode, 2-dimen sional, pulsed Doppler and color-coded Doppler écho cardiographie facilities.…”

Section: Transesophageal Echocardiographymentioning

confidence: 99%

Transesophageal Two-Dimensional and Doppler Echocardiography: Ten Representative Views

Takenaka¹,

Amano²,

Sakamoto³

et al. 1989

Am J Noninvas Cardiol

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Transesophageal echocardiography was performed in 85 patients with various cardiovascular disorders. The ultrasound systems used had M-mode, 2-dimensional, pulsed Doppler, and color-coded Doppler échocardiographie capability. 10 representative cross-sectional views were described. Transesophageal echocardiography including Doppler flow velocity measurements significantly improves the diagnostic efficacy of echocardiography.

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“…16 From the start of the second phase, almost all commercially available echocardiographic systems were designed to allow the use of a transesophageal probe. At 4 and 7 cm2, and more than 7 cm9 predicted respective angiographic gradings of none, mild, moderate, and severe regurgitation; respective sensitivities and specificities were 88% and 94%, 82% and 95%, 100% and 95%, and 83% and 100%. These researchers were the first to offer clear criteria for grading the severity of mitral regurgitation on transesophageal scans, but similar investigations from other institutions will be needed to accumulate additional data of this nature.…”

mentioning

confidence: 93%

New trend in transesophageal echocardiographic technology. Use of biplane transesophageal probe.

Omoto

1990

Circulation

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High Speed Rotating Scanner for Transesophageal Cross-Sectional Echocardiography

Cited by 74 publications

References 6 publications

Detection of ostium secundum atrial septal defects by transoesophageal cross-sectional echocardiography.

Detection of ostium secundum atrial septal defects by transoesophageal cross-sectional echocardiography.

Transesophageal Two-Dimensional and Doppler Echocardiography: Ten Representative Views

New trend in transesophageal echocardiographic technology. Use of biplane transesophageal probe.

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