Comparative study of clinical manifestation, plain-film radiography, and computed tomographic scan in arteriovenous malformations of the jaws

2002 ◽  
Vol 94 (4) ◽  
pp. 503-509 ◽  
Author(s):  
Xindong Fan ◽  
Weiliu Qiu ◽  
Zhiyuan Zhang ◽  
Qing Mao
Keyword(s):  
Comparative Study ◽  
Clinical Manifestation ◽  
Arteriovenous Malformations ◽  
Plain Film ◽  
Computed Tomographic ◽  
Plain Film Radiography ◽  
Computed Tomographic Scan

Stereotactic Radiosurgery with the Linear Accelerator: Treatment of Arteriovenous Malformations

Neurosurgery ◽  
1989 ◽  
Vol 24 (3) ◽  
pp. 311-321 ◽  
Author(s):  
Osvaldo O. Betti ◽  
Claudio Munari ◽  
Roberto Rosler
Keyword(s):  
Mechanical System ◽  
Stereotactic Radiosurgery ◽  
Linear Accelerator ◽  
Arteriovenous Malformations ◽  
Maximum Diameter ◽  
Lesion Volume ◽  
Intracranial Arteriovenous Malformations ◽  
Angiographic Study ◽  
Computed Tomographic ◽  
Computed Tomographic Scan

Abstract An original stereotactic radiosurgical approach coupling a) Talairach's stereotactic methodology, b) a specially devised mechanical system, and c) a linear accelerator is detailed. The authors present their preliminary results on 66 patients with nonsurgical intracranial arteriovenous malformations. The doses delivered for treatment varied from 20 to 70 Gy. Doses of no more than 40 Gy were used in 80% of patients. An angiographic study was performed when the computed tomographic scan controls showed relevant modifications of the lesion volume. Total obliteration was obtained in 27 of the 41 patients (65.8%) who were followed up for at least 24 months. The percentage of the cured patients is significantly higher when a) the entire malformation is included in the 75% isodose (96%) and b) the maximum diameter of the lesion is less than 12 mm (81%). Two patients died of rebleeding at 18 and 29 months after treatment.

The overshoot artifact as an aid in differentiating low densities on the computed tomographic scan

1978 ◽  
Vol 2 (2) ◽  
pp. 149-151 ◽  
Author(s):  
Francis J. Hahn ◽  
Charles G. Jacoby ◽  
James C. Ehrhardt
Keyword(s):  
Computed Tomographic ◽  
Computed Tomographic Scan

Unusual Transoral Penetrating Injury of the Foramen Magnum: Case Report

Neurosurgery ◽  
2003 ◽  
Vol 53 (4) ◽  
pp. 989-991 ◽  
Author(s):  
Bradley J. Bartholomew ◽  
Charla Poole ◽  
Emilio C. Tayag
Keyword(s):  
Cerebrospinal Fluid ◽  
Unusual Case ◽  
Spinal Injury ◽  
Foramen Magnum ◽  
Penetrating Injuries ◽  
Computed Tomographic ◽  
Foreign Objects ◽  
Computed Tomographic Scan ◽  
Posterior Pharynx ◽  
The Right

Abstract OBJECTIVE AND IMPORTANCE Penetrating injuries of the cranium and spine are frequent to the civilian neurosurgical practice. Although a variety of unusual objects have been reported, to our knowledge, there has never been a craniocerebral or spinal injury caused by a fish. An unusual case of transoral penetration of the foramen magnum by a billed fish is described. The history, radiographic studies, and treatment are presented. CLINICAL PRESENTATION A fisherman struck by a jumping fish initially presented with severe neck pain and stiffness, bleeding from the mouth, and a laceration in the right posterior pharynx. A computed tomographic scan of the cervical spine revealed a wedge-shaped, hyperdense object extending from the posterior pharynx into the spinal canal between the atlas and the occiput. Because of the time factor involved, the fisherman was brought directly to surgery for transoral removal of the object. INTERVENTION The patient was placed under general anesthesia, and with a tonsillar retractor, a kipner, and hand-held retractors, the object was visualized and identified as a fish bill. Further dissection above the anterior aspect of the atlas permitted removal of the object by means of a grabber from an arthroscopic set. No expression of cerebrospinal fluid was noted, and a Penrose drain was placed. CONCLUSION The patient was treated under the assumption that penetrating foreign objects in continuity with the cerebrospinal fluid space and the outside environment should be removed as soon as possible. The patient was provided appropriate antibiotics to treat potential infection of normal pharyngeal flora and organisms unique to the marine environment. The patient recovered and did not experience any residual neurological deficit.

scholarly journals Preliminary image findings of lower limb stress fractures to aid ultrasonographic diagnoses: A systematic review and narrative synthesis

Ultrasound ◽  
2021 ◽  
pp. 1742271X2199552
Author(s):  
Madeleine Schaper ◽  
James Harcus
Keyword(s):  
Systematic Review ◽  
Lower Limb ◽  
Injury Severity ◽  
Callus Formation ◽  
Plain Film ◽  
Stress Fractures ◽  
Doppler Imaging ◽  
Narrative Synthesis ◽  
Plain Film Radiography ◽  
Bony Callus

Introduction This systematic review investigates which image appearances are most common when diagnosing lower limb stress fractures using ultrasound imaging, with the aim of outlining an image critique guideline for operators to support confident diagnoses. Method A comprehensive literature search of medical databases and handsearching was undertaken to identify relevant studies. All studies were critically examined for quality using the CASP critical appraisal tool. Results from eight studies were combined and interpreted using a narrative synthesis. Findings A clear outline of common stress fracture appearances using ultrasound were identified in a combined total of 119 participants. Each finding was ranked according to its popularity. Periosteal thickening (78/119) and cortical disruption/irregularity (83/119) were noted in all eight studies. Hypervascularity of the periosteum visualised by colour Doppler imaging (66/119) was reported in six of the eight studies. Soft tissue hypervascularity (13/119), bony callus formation (5/119) and cortical break (22/119) were seen in three studies. Conclusions Based on the findings, we offer a guideline of the most significant preliminary image findings to be utilised by operators when examining athletes suspected of having lower limb stress fractures. The results show a gap in research for evaluating changes in appearance depending on the injury severity. Further research into distinguishing stress fractures from pathological involvement may in future reduce reliance on plain film radiography.

Percutaneous Discectomy: An Anatomical Study

Neurosurgery ◽  
1985 ◽  
Vol 16 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Steven L. Kanter ◽  
William A. Friedman
Keyword(s):  
Computed Tomography ◽  
Lumbar Spine ◽  
Vascular Injury ◽  
Anatomical Study ◽  
Intervertebral Discs ◽  
Viable Alternative ◽  
Percutaneous Discectomy ◽  
Computed Tomographic ◽  
Anatomical Analysis ◽  
Computed Tomographic Scan

Abstract Percutaneous discectomy is a viable alternative in the treatment of herniated intervertebral discs of the lumbar spine. Anatomical analysis of the retroperitoneal surgical path utilizing computed tomography suggests that the risk of vascular injury is negligible at the L-4, L-5 level, but substantial at the L-5, S-1 level. In addition, one-third of patients otherwise suitable for percutaneous discectomy have segments of bowel obstructing the surgical path. Obtaining an abdominal computed tomographic scan with the patient in the surgical position seems to be a valuable screening technique in the evaluation of candidates for this procedure.

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