Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “FLUOROSCOPY”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 883 records · Page 49Linked to original sources
PubMed1980

Evaluating carpal instabilities with fluoroscopy.

In four patients with symptoms suggesting carpal instability (five wrists), fluoroscopic study of the wrists in motion was undertaken after plain film and arthrographic studies showed wither normal or nonspecific findings. Videotape recordings were made continuously of the fluoroscopic image. The examinations revealed that carpal instability can be due to a momentary subluxation that is demonstrable only by observation through a range of motion. Fluoroscopic observation of carpal motion is a useful supplement to static methods in the study of wrist injuries and in these cases gave decisive information not obtainable by other means.

Adolescent↗
PubMed1989

Insertion of subclavian hemodialysis catheters in difficult cases: value of fluoroscopy and angiographic techniques.

Double-lumen hemodialysis catheters designed to be placed via a subclavian vein approach have gained rapid acceptance over the past several years. Several studies have shown a significant rate of subclavian vein stenosis or occlusion after placement of these catheters. A large number of these patients require repeat placement of catheters with access often becoming increasingly difficult to obtain. Over the past 5 years, we have been asked to place 38 catheters in 34 patients that could not be placed at the bedside. Our procedure consists of obtaining a preliminary venogram to evaluate the reason for difficulty. The subclavian vein is then cannulated under direct fluoroscopic visualization while the peripheral venous line is injected with contrast material. Percutaneous angiographic techniques are then used to position the catheter. Satisfactory placement was obtained in all 38 cases. There were no complications, which is surprising considering the number of complications seen with the standard methods of insertion. This represents a new role for the interventional radiologist, one that can be important in minimizing the number of new dialysis sites in any one patient.

Angiography↗
PubMed1992

Voiding cystourethrography in children: value of digital fluoroscopy in reducing radiation dose.

Voiding cystourethrography is a commonly used fluoroscopic procedure in children that can directly irradiate the gonads. As a consequence, much attention has been given to reducing the dose of radiation received during the procedure. A digital fluoroscope, especially adapted for use in children, was evaluated for potential reduction of the dose of radiation during the procedure. Entrance and midplane doses were calculated on child-sized phantoms by using the digital fluoroscope, digital spot films, and 105-mm spot films. Subsequently, data were collected on 47 children, grouped by ages (neonate to 1 year, 1-5 years, and 5-7 years), in whom voiding cystourethrography was performed by using the same exposure factors as those for the phantoms. On the basis of the exposure doses for the phantoms and recorded clinical peak kilovoltages, milliamperes, milliseconds, and fluoroscopic time, average skin and ovarian doses were calculated for each group of children. These doses were compared with previously reported doses for fluoroscopic and radionuclide voiding cystourethrography. Results of line-pair resolution studies for the digital spot films and 105-mm spot films were similar. Images from the digital device and 105-mm images obtained on a conventional fluoroscope were considered equally adequate for clinical decision making. The average midplane and skin doses with digital spot films for children less than 5 years old were equal to or less than 0.66 and 2.37 mGy, respectively, as opposed to 1.37 and 5.32 mGy with the 105-mm spot films. Previously reported ovarian doses range from 2.52 to 10.0 mGy for fluoroscopic voiding cystourethrography and from 0.04 to 0.05 mGy for radionuclide voiding cystourethrography. The use of digital spot films reduced dose approximately 50% compared with 105-mm spot films; the ovarian dose was 0.62 mGy greater than that for radionuclide voiding cystourethrography.

Child↗