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AV-plane displacement technique

German translation: AV-Ebenen-Verschiebungstechnik (?)

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00:24 Jun 3, 2002
English to German translations [PRO]
Medical - Medical: Cardiology / Cardiology
English term or phrase: AV-plane displacement technique
Untersuchungen zur Beurteilung der diastolischen Herzinsuffizienz. Geht es um die Verlagerung? der AV-Klappenebene? Hat schon mal wer etwas von dieser Methode/Technik gehoert?
Dr. med. vet. I. Paquet-Durand
Local time: 04:56
German translation:AV-Ebenen-Verschiebungstechnik (?)
Explanation:
AV-Ebenen-Verschiebungstechnik (?)

(I have the impression this is about the atrioventricular plane)

Your term may refer to a technique employing gated thallium scintigraphy, as outlined in the Web reference below. However, your context is not sufficiently detailed to rule out some other technique and/or modality (such as sonography) that might also be available to visualize, measure and/or or otherwise assess the displacement.

Searched the web for technique "AV-plane displacement ". Results 1 - 3 of about 5. Search took 0.07 seconds.

Chapter 5
... With this technique we recorded images for specific portions of the heart cycle,
and stored ... errors will have a tendency to yield values that are too low for AV ...

(Excerpts: )
The area between ROI [Region of Interest] A, B, C and F is a region of very complex anatomy. This is due to the base of the pulmonary artery and the base of the aorta joining the heart at this point. The region is being in rocking motion, coupled to the displacement of the AV-plane.
( … )
The shapes of region C and of the zone between ROI A, B, C and F is a result of the specific projection of the heart. The AV-plane is perpendicular with respect to the long heart axis and nearly parallel to the left anterior chest wall. Besides, the camera optical axis can only be made to deviate by approximately 30o from the normal right anterior oblique direction. Therefore the movements will appear in shortened perspective, and the AV-plane movement will become distorted in the DS-image (Fig. 5-9). It is the same as outlined in connection with coronary cineangiography (Chapter 4).
In a position where the recording area of the gamma camera is parallel to the long axis of the heart, there will be a result of a DS-image and a SD-image (as presented in Fig. 5-10).
( … )
The mean values of the AV-plane displacement at RV (22.8 %) and LV (20.1 %) are given in Table XI.
If the major axis length is set to 90 mm (corresponding to a normal heart), AV-plane displacement at LV will be 19 mm and at RV 22 mm. This coincides with the corresponding values 21 mm respectively 25 mm obtained from healthy subjects using echocardiography (Chapter 3), and 16 mm respectively 21 mm in coronary patients using coronary angiography (Chapter 4).


Summary[top]
Two frames of the heart, obtained by gated thallium scintigraphy, one in diastole and one in systole, were compared. No outer contour variations of the left and right ventricle were detected.
The only detectable changes in the subtraction pictures was the displacement of the AV-plane, about 19 mm on the left side and 22 mm on the right.
Due to projection errors and the underlying heart diseases of the investigated group, these results are considered to be underestimated.

All the best from Wild Wonderful West Virginia

Tom




Selected response from:

Tom Funke
Local time: 22:56
Grading comment
Beurteilung der verschiebung der AV-Klappenebene is about what I made out of it, as the technique is to assess the AV-plane (and not displace it)
Thank you very much and greeting back from the wild and HOT Oklahoma Isabelle
4 KudoZ points were awarded for this answer

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Summary of answers provided
3 +3AV-Ebenen-Verschiebungstechnik (?)
Tom Funke


  

Answers


3 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +3
AV-Ebenen-Verschiebungstechnik (?)


Explanation:
AV-Ebenen-Verschiebungstechnik (?)

(I have the impression this is about the atrioventricular plane)

Your term may refer to a technique employing gated thallium scintigraphy, as outlined in the Web reference below. However, your context is not sufficiently detailed to rule out some other technique and/or modality (such as sonography) that might also be available to visualize, measure and/or or otherwise assess the displacement.

Searched the web for technique "AV-plane displacement ". Results 1 - 3 of about 5. Search took 0.07 seconds.

Chapter 5
... With this technique we recorded images for specific portions of the heart cycle,
and stored ... errors will have a tendency to yield values that are too low for AV ...

(Excerpts: )
The area between ROI [Region of Interest] A, B, C and F is a region of very complex anatomy. This is due to the base of the pulmonary artery and the base of the aorta joining the heart at this point. The region is being in rocking motion, coupled to the displacement of the AV-plane.
( … )
The shapes of region C and of the zone between ROI A, B, C and F is a result of the specific projection of the heart. The AV-plane is perpendicular with respect to the long heart axis and nearly parallel to the left anterior chest wall. Besides, the camera optical axis can only be made to deviate by approximately 30o from the normal right anterior oblique direction. Therefore the movements will appear in shortened perspective, and the AV-plane movement will become distorted in the DS-image (Fig. 5-9). It is the same as outlined in connection with coronary cineangiography (Chapter 4).
In a position where the recording area of the gamma camera is parallel to the long axis of the heart, there will be a result of a DS-image and a SD-image (as presented in Fig. 5-10).
( … )
The mean values of the AV-plane displacement at RV (22.8 %) and LV (20.1 %) are given in Table XI.
If the major axis length is set to 90 mm (corresponding to a normal heart), AV-plane displacement at LV will be 19 mm and at RV 22 mm. This coincides with the corresponding values 21 mm respectively 25 mm obtained from healthy subjects using echocardiography (Chapter 3), and 16 mm respectively 21 mm in coronary patients using coronary angiography (Chapter 4).


Summary[top]
Two frames of the heart, obtained by gated thallium scintigraphy, one in diastole and one in systole, were compared. No outer contour variations of the left and right ventricle were detected.
The only detectable changes in the subtraction pictures was the displacement of the AV-plane, about 19 mm on the left side and 22 mm on the right.
Due to projection errors and the underlying heart diseases of the investigated group, these results are considered to be underestimated.

All the best from Wild Wonderful West Virginia

Tom






Tom Funke
Local time: 22:56
Native speaker of: English
PRO pts in category: 4
Grading comment
Beurteilung der verschiebung der AV-Klappenebene is about what I made out of it, as the technique is to assess the AV-plane (and not displace it)
Thank you very much and greeting back from the wild and HOT Oklahoma Isabelle

Peer comments on this answer (and responses from the answerer)
agree  Elvira Stoianov
2 hrs

agree  Steffen Walter: also, "-methode" or "-verfahren" could be used instead of "-technik"
6 hrs

agree  xxxDr.G.MD
15 hrs
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