| FEER | field echo with even echo rephasing |
|---|---|
| Cz | central midline placement of electrodes in electroencephalography |
| Fz | frontal midline placement of electrodes in electroencephalography |
| IMDD | idiopathic midline destructive disease |
| lm | lower midline; lumen |
| MMR | Midline malignant reticulosis |
|---|---|
| 2-D echo | 2-dimensional echocardiography |
| CSE | Conventional spin echo |
| EP | Echo Planar |
| EPI | Echo Planar Imaging |
| malignant midline reticulosis | An obsolete term for polymorphic reticulosis (05 Mar 2000) |
|---|---|
| granuloma, lethal midline | A non-neoplastic disease of unknown aetiology beginning with inflammation, ulceration, and perforation of nose and palate and progressing to gradual destruction of midline facial structures. (12 Dec 1998) |
| midline | <dentistry> A plane through the very centre of your mouth perpendicular to your nose. (08 Jan 1998) |
| midline closure defects | <radiology> Anencephaly, encephalocele, 70% occipital, 20% parietal or frontal, 10% basal, agenesis of corpus callosum associated with increased alpha-fetoprotein. (12 Dec 1998) |
| midline granulomatosis | Wegener's granulomatosis or midline granulomatosis is a rare disorder characterised by chronic tissue inflammation (due to the inflammation of blood vessels) and granuloma (aggregates of cells) formation in the nasal passages, lungs and kidneys. (27 Sep 1997) |
| midline incision | A vertical abdominal incision placed in the midline aponeurosis between the two sheaths of the rectus muscles of the abdomen. (05 Mar 2000) |
| midline malignant reticulosis granuloma | Destruction of the nasal septum, hard palate, lateral nasal walls, paranasal sinuses, skin of the face, orbit and nasopharynx by an inflammatory infiltrate with atypical lymphocytic and histiocytic cells; presumably a form of lymphoma in most cases. An obsolete term for polymorphic reticulosis. Synonym: granuloma gangrenescens, malignant granuloma, midline malignant reticulosis granuloma. (05 Mar 2000) |
| midline myelotomy | Section of the midline transverse fibres of the spinal cord for the treatment of intractable pain. Synonym: commissural myelotomy, commissurotomy. (05 Mar 2000) |
| lethal midline granuloma | Destruction of the nasal septum, hard palate, lateral nasal walls, paranasal sinuses, skin of the face, orbit and nasopharynx by an inflammatory infiltrate with atypical lymphocytic and histiocytic cells; presumably a form of lymphoma in most cases. An obsolete term for polymorphic reticulosis. Synonym: granuloma gangrenescens, malignant granuloma, midline malignant reticulosis granuloma. (05 Mar 2000) |
| atrial echo | Electrical reactivation of the atrium by a retrograde impulse returning from the A-V node while the antegrade impulse continues to the ventricle; characterised electrocardiographically, by a pair of P waves enclosing a QRS complex, the second P wave being inverted, indicating that it is the reverse (the retrograde pathway) of the pathway of the first P wave (the antegrade pathway). (05 Mar 2000) |
| spin echo | A commonly used technique to recover T2 relaxation signals in magnetic resonance imaging, by using a 180 |
| nodus sinuatrialis echo | A postectopic sinus beat occurring earlier than would be expected from the preceding sinus node discharge interval; i.e., the interval following a premature beat of supraventricular origin is less than the ordinary cycle length between sinus beats, whereas ordinarily the interval would be expected to exceed cycle length. (05 Mar 2000) |
| echo | Origin: L. Echo, Gr. Echo, sound, akin to, sound, noise; cf. Skr. Va to sound, bellow; perh. Akin to E. Voice: cf. F. Echo. 1. A sound reflected from an opposing surface and repeated to the ear of a listener; repercussion of sound; repetition of a sound. "The babbling echo mocks the hounds." (Shak) "The woods shall answer, and the echo ring." (Pope) 2. Sympathetic recognition; response; answer. "Fame is the echo of actions, resounding them." (Fuller) "Many kind, and sincere speeches found an echo in his heart." (R. L. Stevenson) 3. A wood or mountain nymph, regarded as repeating, and causing the reverberation of them. "Sweet Echo, sweetest nymph, that liv'st unseen Within thy airy shell." (Milton) A nymph, the daughter of Air and Earth, who, for love of Narcissus, pined away until nothing was left of her but her voice. "Compelled me to awake the courteous Echo To give me answer from her mossy couch." (Milton) Echo organ, a stop upon a harpsichord contrived for producing the soft effect of distant sound. To applaud to the echo, to give loud and continuous applause. "I would applaud thee to the very echo, That should applaud again." (Shak) Source: Websters Dictionary (01 Mar 1998) |
| echo beat | Extrasystole produced by the return of an impulse in the heart retrograde to a focus near its origin which then returns antegradely to produce a second depolorization. (05 Mar 2000) |
| echo-free | The property of appearing echo-free or without echoes on a sonographic image; a clear cyst appears anechoic. See: transonic. Synonym: echo-free. Origin: G. An-priv. + echo + ic (05 Mar 2000) |
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