| window level | The CT number setting in Hounsfield units of the midpoint of the window width, which is the gray scale of the image; a typical window level for imaging the lungs if -500; for the abdomen, 0. (05 Mar 2000) |
|---|---|
| window width | The range of CT numbers (in Hounsfield units) included in the gray scale video display of the CT image, ranging from 1 to 2000 or 3000, depending on the type of machine. See: window level. (05 Mar 2000) |
| soft tissue window | mediastinal window |
| oval window | Fenestra of the vestibule; an oval opening in the medial wall of the middle ear leading into the vestibule. Normally it is covered by the base of the stapes. (12 Dec 1998) |
| tachycardia window | In paroxysmal tachycardia of the reentry type, the interval of time (the window) between the earliest and latest premature activation that can excite the paroxysm. (05 Mar 2000) |
| little fossa of the cochlear window | A depression on the medial wall of the middle ear which has the fenestra cochleae (round window) in its lower portion. Synonym: fossula rotunda, little fossa of the cochlear window. (05 Mar 2000) |
| little fossa of the vestibular window | A depression on the medial wall of the middle ear which has the fenestra vestibulae (oval window) in its lower portion. Synonym: Huguier's sinus, little fossa of the vestibular window, little fossa of the vestibular round window. (05 Mar 2000) |
| lung window | CT settings of window level and width appropriate to showing lung detail; soft tissues are white or nearly so. Mediastinal window, CT settings of window level and width appropriate to showing soft tissue structures; the lungs become black at these settings. Synonym: soft tissue window. (05 Mar 2000) |
| Belsey Mark IV procedure | A transthoracic hiatal hernia repair that restores the lower oesophageal sphincter zone to the high pressure region below the diaphragm. (05 Mar 2000) |
| Belsey Mark V procedure | A modified Belsey Mark IV procedure often employing pledgetted sutures performed for patients with hiatal hernia plus disordered oesophageal motility in whom an oesophageal myotomy is also needed. (05 Mar 2000) |
| Girdlestone procedure | Complete resection or excision of the head and neck of the femur. (05 Mar 2000) |
| Vineberg procedure | Implantation of the internal mammary artery into the myocardium to improve blood flow to the heart. (05 Mar 2000) |
| V-Y procedure | A flap in which the incision is made in a V shape and sutured in a Y shape to gain additional tissue. Synonym: V-Y plasty, V-Y procedure. (05 Mar 2000) |
| Gomori procedure | <procedure> Cytochemical staining procedure used to localise acid phosphatases. Depends upon the production of phosphate ions from organic phospho esters such as _ glycerophosphate. The phosphate in the presence of lead ions causes the formation of a precipitate of lead salt that is converted to the brown sulphide of lead by the action of yellow ammonium sulphide. (18 Nov 1997) |
| Chamberlain procedure | A limited left anterior thoracostomy for biopsy of the mediastinal nodes out of reach by cervical mediastinoscopy. Synonym: anterior mediastinotomy. (05 Mar 2000) |