(n.) The skeleton of the head of a vertebrate animal, including the brain case, or cranium, and the bones and cartilages of the face and mouth. See Illusts. of Carnivora, of Facial angles under Facial, and of Skeleton, in Appendix.
(n.) The head or brain; the seat of intelligence; mind.
(n.) A covering for the head; a skullcap.
(n.) A sort of oar. See Scull.
Example Sentences:
(1) However, CT will be insensitive in the detection of the more cephalic proximal lesions, especially those in the brain stem, basal cisterns, and skull base.
(2) For the case described by the author primary tearing of the chiasma due to sudden applanation of the skull in the frontal region with burstfractures in the anterior cranial fossa is assumed.
(3) The skull films and CT scans of 1383 patients with acute head injury transferred to a regional neurosurgical unit were reviewed.
(4) We report a rare case of odontogenic abscess, detected while the patient was in the intensive care unit (ICU), which resulted in sepsis and the patient's death due to mediastinitis, skull osteomyelitis, and deep neck cellulitis.
(5) This lack of symmetry in shape and magnitude may be due to non-sphericity of the skull over the temporal region or to variations in conductivities of intervening tissues.
(6) As I looked further, I saw that there was blood and hair and what looked like brain tissue intermingled with that to the right area of her skull."
(7) The inner table of the skull over the lesion was eroded.
(8) A three-dimensional anatomic model of a human skull was produced with birefringent materials for photoelastic analysis.
(9) The effects on skull growth of plating the coronal suture and frontal bone were studied in New Zealand White rabbits.
(10) Much more recently, use of modern CT ("computed tomography") scanning equipment on the London Archaeopteryx's skull has enabled scientists to reconstruct the whole of its bony brain case - and so model the structure of the brain itself.
(11) Tension pneumocephalus was diagnosed by computed tomography (CT) scan and plain skull X-ray.
(12) After removal from the skull, the brains were processed for histopathological evaluation of ischemic neuronal damage by light microscopy and morphometry.
(13) The author describes three systems for (1) the treatment of mandibular fractures; (2) the treatment of midface fractures, for reconstructive surgery of the facial skeleton and the skull, and for orthognathic surgery; and (3) the reconstruction of mandibular defects including condyle replacement.
(14) To avoid the complications attributable to the cervical spine, we recommend roentgenographic examination in all neurofibromatosis patients who are about to have general anesthesia or skull traction for treatment of scoliosis.
(15) Eight macerated human child skulls with a dental age of approximately 9.5 years (mixed dentition) were consecutively subjected to an experimental standardized high-pull headgear traction system attached to the maxilla at the first permanent molar area via an immovable acrylic resin splint covering all teeth.
(16) Lateral skull X-ray images are routinely used in cephalometric analysis to provide quantitative measurements useful to clinical orthodontists.
(17) The absence of a visible fracture on plain skull radiographs does not exclude a fracture, and those patients with clinical signs of a fracture should be treated appropriately and further investigations performed.
(18) In our study, 17 fractures were detected in 594 patients who had skull radiography because of trauma to the head.
(19) The algorithm is an improvement over the sphere model in that it considers two distinct surfaces: an ellipsoid, to model the region of the skull on which the sensors are placed, and a sphere as the medium in which the current dipole model is considered.
(20) A new combination of techniques for resection of hemangiopericytoma of the skull base is described.
Trephine
Definition:
(n.) An instrument for trepanning, being an improvement on the trepan. It is a circular or cylindrical saw, with a handle like that of a gimlet, and a little sharp perforator called the center pin.
(v. t.) To perforate with a trephine; to trepan.
Example Sentences:
(1) Specimens from the bone marrow taken were by trephine biopsy from the sternum, ala ossis ilii and spine.
(2) The routine study of bone marrow trephine biopsies involves fixation, decalcification, paraffin-embedment, sectioning and staining.
(3) This correction improved the S-phase cell estimate from aspirated marrows, and the corrected values were not significantly different from values from paired trephine samples.
(4) Forty-five percutaneous trephine lung biopsies using the Steel apparatus were performed on 38 patients.
(5) A retrospective study was performed to evaluate the effect of recipient-donor trephine disparity on refractive error and corneal curvature post-suture removal in keratoconus.
(6) This instrument, a modification of a corneal trephine, provides a neat, smooth groove of adjustable depth.
(7) Trephination dates from prehistoric neolithic times (10,000-7000 B.C.)
(8) Forty-six patients were examined in a prospective, randomized clinical study to compare the use of the same size trephine on both donor and recipient with the use of a 0.5-mm larger trephine on the donor in aphakic keratoplasty and in keratoplasty combined with lens extraction.
(9) All patients had a trephine biopsy of the bone marrow and entered this study without prior selection.
(10) Meticulous handling of the graft (using a Goeller trephine and Tenon's traction sutures), filleting Tenon's capsule and avoiding cautery of the graft bed may minimize graft necrosis and atrophy.
(11) With the use of a guide box of plexiglas screwed into a trephine of the calvarium, several thermocouples could be inserted at various depths into the brain at the same time.2.
(12) In the control contralateral trephines, one-third to one-half of the defect was incompletely repaired.
(13) In a series of 20 human autopsy and 40 pig cadaver eyes the histological and ultrastructural results of donor and recipient trephination and full-thickness corneal grafting using new mask systems were evaluated.
(14) The use of a small trephine for chalazion surgery or tarsal biopsy is described.
(15) In this laboratory study, we used five different corneal trephines on 60 fresh human donor eyes with controlled intraocular pressure to study the variation in the size and shape of the trephine openings.
(16) One horizontal hole from the peripheral vasculature to one of the artificial longitudinal injuries to both medial menisci of the knee in each dog was made with a needlelike trephine.
(17) Three types of Berger's early investigations are described: (1) String-galvanometer recordings obtained between 1924 and 1926, mainly from trephined patients with cerebral diseases, which usually showed brain waves slowed to 6--8 per second; (2) Direct recordings from the cortex and white matter proving the cortical origin of the EEG in 1930; (3) Typical unpublished EEG recordings of epileptics and of petit-mal attacks obtained in 1930 and 1931.
(18) No complications of infection, osteomyelitis, or major nail deformities occurred in any patients treated by nail trephination, regardless of SUH size or presence of fracture.
(19) Tumour infiltration was also suggested in four of 10 staging procedures with suspicious trephine specimens, but in none of three with relatively innocent histological and cytological features.
(20) Seventy-two adult Sprague-Dawley rats each received bilateral 8-mm trephine defects in the temporoparietal area; this defect size precludes spontaneous osseous healing during the lifetime of the animal.