| ADI | Academy of Dentistry International; acceptable daily intake; AIDS-defining illness; allowable daily ... |
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| RFA | resident functional atlas; right femoral artery; right frontoanterior [fetal position] |
| BRW | Brown-Robert-Wells [stereotactic system] |
| SEEG | stereotactic electroencephalography |
| SMT | spontaneous mammary tumor; stereotactic mesencephalic tractomy |
| SRS | Stereotactic Radiosurgery |
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| SCNB | Stereotactic core needle biopsy |
| SRT | Stereotactic radiotherapy |
| stereotactic | Precise positioning in three dimensional space. Refers to surgery or radiation therapy directed by various scanning devices. (16 Dec 1997) |
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| stereotactic cordotomy | See: cordotomy. (05 Mar 2000) |
| stereotactic instrument | Stereotaxic instrument, an apparatus attached to the head, used to localise precisely an area in the brain by means of coordinates related to intracerebral structures. (05 Mar 2000) |
| stereotactic needle biopsy | Biopsy done while breast is compressed under mammography. A series of pictures locate the lesion, and a radiologist enters information into a computer. The computer calculates information and positions a needle to remove the finding. A needle is inserted into the lump, and a piece of tissue is removed and sent to the lab for analysis. May be referred to as mammotest or core biopsy. (09 Oct 1997) |
| stereotactic radiosurgery | A radiation therapy technique that uses a large number of narrow, precisely aimed, highly focused beams of ionising radiation. The beams are aimed from many directions circling the head and meet at a specific point. (16 Dec 1997) |
| stereotactic surgery | A precise method of destroying deep-seated brain structures located by use of three-dimensional coordinates. Synonym: stereoencephalotomy, stereotactic surgery, stereotaxic surgery, stereotaxis. (05 Mar 2000) |
| anterior arch of atlas | An arch that connects the lateral masses of the atlas anteriorly and articulates with the anterior articular facet of the dens of the axis. Synonym: arcus anterior atlantis. (05 Mar 2000) |
| anterior tubercle of atlas | A conical protuberance on the anterior surface of the arch of the atlas. Synonym: tuberculum anterius atlantis. (05 Mar 2000) |
| atlas | 1. One who sustains a great burden. 2. <anatomy> The first vertebra of the neck, articulating immediately with the skull, thus sustaining the globe of the head, whence the name. 3. A collection of maps in a volume. Supposed to be so called from a picture of Atlas supporting the world, prefixed to some collections. This name is said to have been first used by Mercator, the celebrated geographer, in the 16th century. 4. <chemistry> Atlas powder, a nitroglycerin blasting compound of pasty consistency and great explosive power. Origin: L. Atlas, -antis, Gr, one of the older family of gods, who bears up the pillars of heaven; also Mt. Atlas, in W. Africa, regarded as the pillar of heaven. It is from the root of to bear. See Tolerate. Source: Websters Dictionary (01 Mar 1998) |
| atlas fracture | <radiology> Incidence: 4% of cervical spine injuries, site: posterior arch, anterior arch, massa lateralis, Jefferson fracture associated with: fractures of C7 (25%), fractures of C2 pedicle (15%), extraspinal fractures (58%) (12 Dec 1998) |
| pit of atlas for dens | A circular facet on the posterior (inner) surface of the anterior arch of the atlas which articulates with the dens of the axis. Synonym: fovea dentis atlantis, pit of atlas for dens. (05 Mar 2000) |
| posterior arch of atlas | The posterior arch of the atlas that connects the lateral masses of the atlas posteriorly, forming the posterior wall of the vertebral canal at this level. Synonym: arcus posterior atlantis. (05 Mar 2000) |
| cruciate ligament of the atlas | The strong ligament that lies posterior to the dens of the axis holding it against the anterior arch of the atlas; it consists primarily of the transverse ligament of the atlas that forms the cross-bar of the cross and is most important functionally, and longitudinal bands of the cruciform ligament, forming the upright or vertical beams of the cross. Synonym: ligamentum cruciforme atlantis, crucial ligament, cruciate ligament of the atlas, ligamentum cruciatum atlantis. (05 Mar 2000) |
| cruciform ligament of atlas | The strong ligament that lies posterior to the dens of the axis holding it against the anterior arch of the atlas; it consists primarily of the transverse ligament of the atlas that forms the cross-bar of the cross and is most important functionally, and longitudinal bands of the cruciform ligament, forming the upright or vertical beams of the cross. Synonym: ligamentum cruciforme atlantis, crucial ligament, cruciate ligament of the atlas, ligamentum cruciatum atlantis. (05 Mar 2000) |
| posterior tubercle of atlas | A protuberance of the posterior extremity of the arch of the atlas, a rudiment of the spinous process giving attachment to the musculus rectus capitis posterior minor muscle. Synonym: tuberculum posterius atlantis. (05 Mar 2000) |
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