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At least 19 recordsLinked to original sources
PubMed1993

Obstruction of the St. Jude Medical valve--diagnostic and therapeutic values of cineradiography.

Between 1984, and 1992, we observed 8 patients with an obstructed St. Jude Medical (SJM) valve. Of these, 1 had an obstructed SJM valve in the aortic position, 3 in the mitral position, and 4 in the tricuspid position. Diagnosis of obstruction of the SJM valve was made by cineradiography combined with echocardiography in all 8 patients. Restriction or absence of movement of the leaflet of the SJM valve was observed by cineradiography in all of the 8 patients. Normal range of leaflet mobility of the SJM valve was measured by conventional cineradiography in 70 patients with a normal SJM valve, and the results were compared with the leaflet mobility obtained from the 8 patients with an obstructed SJM valve. In this study, leaflet function in the obstructed SJM valve was strikingly abnormal, with both opening and closing angles, and leaflet motion clearly outside the normal range. Of the 8 patients, 4 underwent urgent prosthetic valve replacements after cineradiography and echocardiography were carried out. Thrombolysis using urokinase was performed in 4 patients, and this treatment was successful in 1 patient. Efficacy of thrombolytic therapy was evaluated by repeat cineradiography. Three of the 4 patients who received thrombolysis showed no significant improvement of leaflet mobility after at least 72 hours of thrombolytic therapy, and finally required surgical correction for the obstructed SJM valve. We believe that cineradiography combined with echocardiography is the optimal method for the diagnosis of obstruction of the SJM valve, and to follow the effect of thrombolytic therapy on prosthetic valve function.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed2001

Using cineradiography for continuous dynamic-motion analysis of the lumbar spine.

STUDY DESIGN: Cineradiography was used to analyze continuous dynamic motion in the lumbar spine. OBJECTIVES: To identify motion patterns of the lumbar spine in asymptomatic volunteers and symptomatic patients with L4 degenerative spondylolisthesis, and to use the findings to discuss segmental instability in this disorder. SUMMARY OF BACKGROUND DATA: The use of radiographic findings to assess lumbar spine instability remains controversial. Although some studies have reported on lumbar kinematics during actual movement, the motion patterns in asymptomatic volunteers and symptomatic patients with L4 degenerative spondylolisthesis have not been fully clarified. METHODS: While asymptomatic volunteers (n=20; mean age, 27; control group) and symptomatic patients with L4 degenerative spondylolisthesis (n=41; mean age, 63; degenerative spondylolisthesis [DS] group) flexed from a sitting neutral position and back to the neutral position (flexion course), cineradiography was used to record lateral segmental lumbar motions. Twelve frames were selected during the flexion course, and flexion-extension angle (f-e angle) and translation in the sagittal plane were measured at each motion segment (L2-L3, L3-L4, L4-L5, and L5-S1). The DS group was classified into 2 subgroups according to percentage of slip: DS group I, with a slip equal to or less than 15%; and DS group II, with a slip of more than 15%. The motion pattern was compared between the groups. RESULTS: In the control group, f-e angle and translation at the L2-L3, L3-L4, and L4-L5 segments moved simultaneously, although the L5-S1 segment showed an initial delay. The amount of f-e angle and translation changed almost symmetrically. In both f-e angle and translation, the L4-L5 segment showed a large motion pattern. In DS group I (n=21), the L4-L5 segment showed a large motion pattern in f-e angle and an intermediate motion pattern in translation. In DS group II (n=20), the L4-L5 segment showed an intermediate motion pattern in f-e angle, and a small motion pattern in translation. The relative range of f-e angle at the L4-L5 segment had the largest range in DS group I, and the relative translation showed a serial decrease from the control group through DS group II. A significant correlation between f-e angle and translation (harmonious motion pattern) was noted at the L2-L3, L3-L4, and L4-L5 segments in the control group. The harmonious motion pattern at the L4-L5 segment was significantly less in the DS group than in the control group. The loss of harmonious motion pattern (disordered motion pattern) at L4-L5 was well-revealed in the DS group II. CONCLUSIONS: Motion analyses using cineradiography helped to explain the phenomena of lumbar spine kinematics. Based on continuous dynamic-motion analysis with cineradiography, large f-e angle and disordered motion pattern during the flexion-backward course in the DS group I was considered to be caused by segmental instability. The decreased translation and disordered motion pattern throughout the flexion course in the DS group II was considered to be caused by restabilization.

Adult↗
PubMed1993

Cineradiography for determination of normal and abnormal function in mechanical heart valves.

To determine the diagnostic value of cineradiography of mechanical heart valves, 112 cinefluoroscopic studies were performed in 76 patients with 95 valve prostheses (caged ball or disk valves, tilting disk and bileaflet valves). A patient group (n = 45) presenting with clinical or echocardiographic findings suggestive of valve-related complications was compared with a control group (n = 31) without such symptoms. Disk-opening angles (mean +/- SD) for Medtronic Hall aortic valves were found to be significantly smaller (62.8 +/- 11.1 degrees) in patients than in control subjects (73.9 +/- 1.6 degrees; p < 0.05). Tissue ingrowth or thrombus formation, or both, demonstrated in 3 patients on subsequent reoperation, are considered as the main cause of incomplete or asymmetric disk opening. Opening and closing times did not differ significantly between patients and control subjects. Besides abnormal valve motion, structural defects such as strut fracture or leaflet escape could be rapidly detected by cineradiography if x-ray projections according to the particular valve design were used. Together with quantitative Doppler echocardiographic and clinical data, this method can help to give specific answers if the question is to either confirm or exclude imminent or acute valve malfunction. Thus, modern cineradiography is a highly valuable noninvasive diagnostic tool for both rapid management of emergency cases and routine follow-up of patients with mechanical heart valves.

Aortic Valve↗
PubMed2003

[Digital cineradiography of the pharynx and the oesophagus after total or partial laryngectomy].

PURPOSE: The aim of the present study is to report our experience using digital cineradiography to assess morphological and functional disorders of the pharynx in patients with prior partial or total laryngectomy. MATERIALS AND METHODS: From March 2000 to October 2002, 21 patients (18 males and 3 females) with prior total laryngectomy (12 patients), total laryngopharyngectomy (2 patients) and partial laryngectomy (7 patients) were examined. A digital cineradiography with 12 frames/second acquisition was performed in all patients. In four patients the procedure was interrupted for massive barium aspiration, without cough (silent aspiration). In 17 patients standing in the left posterior oblique position and prone in the right posterior oblique position the oesophagus and oesophagogastric junction were also examined. The water siphon test was performed at the end of the procedure. Small boluses (10 ml) of liquid (60% w/v) and high-density (250% w/v) barium, barium paste (110% w/v), and solid meal (obtained spreading a dry biscuit with barium paste) were used. RESULTS: All patients with prior total laryngectomy and total laryngopharyngectomy showed morphological and functional disorders of the neopharynx: parapharyngeal diverticulum (2 cases), submandibular pouch (6 cases), fistulas (2 cases), lumen narrowing and post-surgical stenoses (2 cases), tumour recurrence (1 case), prominent cricopharynx (5 cases) and rhinopharyngeal reflux (4 cases). All patients with prior partial laryngectomy (7 cases) presented silent aspiration. Eleven patients had an oesophageal motility disorder, which was very serious in three of them with decrease in oesophageal clearing and barium retention in the oesophagus. Oesophagogastric junction evaluation showed hiatus hernia in six cases, two of them with associated gastro-oesophageal reflux. CONCLUSIONS: Digital cineradiography appears able to identify the organic and functional postoperative complications of patient treated with partial or total laryngectomy. A special swallowing study can suggest to the speech therapist the best compensatory mechanism for improving patient swallowing and therefore quality of life.

Adult↗
PubMed1990

[The feasibility of pretherapeutic diagnosis of malignant pharyngeal processes using high-frequency cineradiography].

The differentiation between stage T3 and stage T4 pharyngeal tumors is of crucial importance for the proper therapeutic approach (surgery, surgery with consecutive radio- or radiochemotherapy, chemotherapy). The clinical relevance of the additional information provided by cineradiography was evaluated in combination with the endoscopic and computed tomographic results. We performed static and dynamic pharyngography with mono- and double-contrast-methods in four planes, including pharyngeal distension (Valsalva's and Müller's maneuver) and phonation. For the dynamic study, high-speed cineradiography (35 mm film, 50 frames/s) was used. Twenty-three patients with histologically proven neoplasms were examined. It was determined that surgery was technically feasible in 4 out of 14 patients who were previously presumed to have inoperable tumors. In 2 cases, an extension of the tumor mass was seen by cineradiography (results proven intraoperatively).

Adult↗
PubMed1978

[Diagnosis of abnormal spine motion with cineradiography (author's transl)].

For the past one year, 13 patients were studied 20 times with cineradiography to diagnose abnormal spine motion, which was quite informative compared to usual plain spine X-ray pictures. The direct radiation dosis was only 2.35 rem/min on taking cineradiography at the speed of 60 frames/sec. The camera used was Cardoskop-U and the X-ray generator was Pandoros Optimatic, both of which were of Siemens make. It was keenly recognized that cineradiography was useful to diagnose 1) solidity of spine fusion, 2) effect of spinal traction, 3) efficacy of immobilizing apparatus for spine and 4) abnormal spine motion on dynamic way.

Adolescent↗
PubMed1980

Cardiac dimensional analysis by use of biplane cineradiography: description and validation of method.

Biplane cineradiography is a potentially powerful tool for precise measurement of intracardiac dimensions. The most systematic approach to these measurements is the creation of a three-dimensional coordinate system within the x-ray field. Using this system, interpoint distances, such as between radiopaque clips or coronary artery bifurcations, can be calculated by use of the Pythagoras theorem. Alternatively, calibration factors can be calculated in order to determine the absolute dimensions of a structure, such as a ventricle or coronary artery. However, cineradiography has two problems that have precluded widespread use of the system. These problems are pincushion distortion and variable image magnification. In this paper, methodology to quantitate and compensate for these variables is presented. The method uses radiopaque beads permanently mounted in the x-ray field. The position of the bead images on the x-ray film determine the compensation factors. Using this system, measurements are made with a standard deviation of approximately 1% of the true value.

Angiocardiography↗
PubMed1983

Cineradiography in 45 patients with acute dysphagia.

The function of the pharyngoesophageal stage of deglutition was studied by cineradiography in 45 patients with an acute onset of dysphagia. None of the patients had any radiographically detectable foreign body in the pharynx or esophagus. In 34 of the patients (76%) a functional or morphodynamic abnormality was disclosed; a defective closure of the laryngeal vestibule (26 patients), defective movements of the epiglottis (18 patients), uncoordinated relaxation of the cricopharyngeal muscle (14 patients), paresis of pharyngeal constrictor muscles (9 patients), and cervical webs (9 patients). In 21 of the patients more than 1 type of dysfunction was present. The results of this study suggest that cineradiography of the pharyngoesophageal stage of deglutition is useful in patients with acute dysphagia, without a foreign body, as functional abnormalities often can explain the patients' complaints.

Acute Disease↗
PubMed2000

Obstruction of St Jude Medical valves in the aortic position: significance of a combination of cineradiography and echocardiography.

BACKGROUND: Obstruction of the St Jude Medical valve (St Jude Medical, Inc, St Paul, Minn) is a rare but serious complication. METHODS: Cineradiographic and echocardiographic evaluations of aortic St Jude Medical valves were simultaneously performed on 54 patients, with no signs of prosthetic valve dysfunction late after surgery. RESULTS: Although closing angles of the leaflets corresponded closely with the manufacturer data, restricted opening of the leaflets (opening angle >/= 20 degrees ) was found in 16 (group D) of the 54 patients by means of cineradiography. The opening angles were equal to or less than 14 degrees in the other 23 patients (group N) and between 15 degrees and 19 degrees in the remaining 15 (group M). Doppler-derived transprosthetic pressure gradients were significantly higher (P =.03) and the velocity index was significantly lower (P =.003) in group D than in group N. However, no significant differences were found in those values between group N and group M. Replacement of the aortic St Jude Medical valves was performed in 5 of the 16 patients, and the remaining 11 have been followed up because of relatively low pressure gradients. The cause of restricted leaflet movement was pannus formation without thrombosis in 4 patients and valve thrombosis with pannus formation in one. CONCLUSIONS: Reduced valve orifice area and restricted opening of the leaflets resulting from excess growth of pannus probably led to obstruction of the aortic St Jude Medical valves. A combination of cineradiography and echocardiography makes it possible to provide an accurate and detailed diagnosis of obstruction of the valve.

Adolescent↗
PubMed1999

Dynamic motion analysis of normal and unstable cervical spines using cineradiography. An in vivo study.

STUDY DESIGN: Cervical motion patterns were analyzed in a normal population and in patients with cervical instability by using cineradiography. OBJECTIVES: To determine normal and pathologic motion patterns in the cervical spine through an in vivo continuous motion analysis. SUMMARY OF BACKGROUND DATA: Cineradiographic techniques have been used in a limited number of studies to quantify spinal motion. There is a paucity of information regarding dynamic motion patterns in normal and pathologic cervical spines. METHODS: Ten healthy subjects and 12 patients with unstable cervical spines (C1-C2 subluxation caused by rheumatoid arthritis, n = 10; instability below C2, n = 2) were studied. Cervical motion during flexion from the maximum extension position was recorded using cineradiography. Cervical segmental motions (C1-C2 to C5-C6) were continuously measured through quantifying cineradiographic images projected on a digitizer. RESULTS: Normal cervical spines showed a well-regulated stepwise motion pattern that initiated at C1-C2 and transmitted to the lower segments with time lags. Pathologic spines showed a different order of onset of segmental motion. In patients with rheumatoid arthritis who had atlantoaxial subluxation, C1-C2 motion initiated significantly earlier than C2-C3 motion. In patients with segmental instability below C2, motion in the unstable segments preceded that in the upper intact segments. CONCLUSIONS: Different motion patterns were observed between normal and pathologic cervical spines. Cineradiographic motion analysis is a valuable adjunctive technique, especially in diagnosis or evaluation of conditions that cannot be identified through conventional radiographic examination.

Adult↗
PubMed1983

Thrombosis of Björk-Shiley valve prostheses. Evaluation by cineradiography.

Cineradiography is the most accurate and rapid method in evaluation of the function of Björk-Shiley prosthetic valves manufactured after late 1975 and which incorporate a tantalum foil hoop into the disc. This helps in demonstration of the disc and in the calculation of the opening angle of the disc. In the present series 8 cases with valve dysfunction have been correctly diagnosed by conventional cineradiography, 7 in the mitral and one in the aortic position. In all 8 cases and also in the group of 300 postoperative cases having no symptoms, the opening angle has been measured by the method described by Venkataraman et coll. in 1980. It is recommended that in accordance with the suggestions of these authors, the opening angle should be established for each patient in the immediate postoperative period in order to provide a basis for possible future examinations.

Adult↗
PubMed1982

Cineradiography of the pharyngeal stage of deglutition in 250 patients with dysphagia.

In order to define the diagnostic outcome of cineradiographic examination of the swallowing act (pharyngeal stage) in patients with dysphagia, 250 such patients were consecutively examined at filmspeeds of 50 and 100 frames per second. Synchronous and symmetrical swallowing was observed in 20% of the patients while 80% exhibited functional abnormalities i.e., epiglottic dysfunction (33%), misdirected swallowing and aspiration (41%), cricopharyngeal dysfunction (22%), paresis of the pharyngeal constrictor musculature (10%), webs (15%) and Zenker diverticula (2%). These results clearly indicate that cineradiography can frequently disclose functional abnormalities in the act of swallowing among patients with dysphagia and explain the symptoms of these patients. Cineradiography is clearly superior to conventional single-film technique in revealing functional abnormalities in the act of swallowing.

Adolescent↗
PubMed1991

Dysphagia of the treated laryngeal cancer--detection of functional and morphological changes by cineradiography.

After treatment of laryngeal cancer 35 patients with dysphagia have been examined by high speed cineradiography. When compared to normal swallowing patterns, the following abnormalities were observed: Excursion of the posterior pharyngeal wall during swallowing is twice as intensive as normal. The function of the base of the tongue becomes more important for pharyngeal emptying--a fact that surgeons should take into consideration when planning laryngeal resection. Timing of pharyngeal constriction and function of the upper esophageal sphincter are definitively altered. In view of these changes we think that cineradiography can help to find better methods for functional surgery of the pharynx and the adjacent structures.

Cicatrix↗
PubMedDate not supplied

Rectal anatomy following Ripstein's operation for prolapse studied by cineradiography.

Eleven patients operated on for rectal prolapse, according to the method described by Ripstein, were examined pre- and postoperatively with cineradiography of the rectum. The patients were asked to fill in a questionnaire to evaluate their histories of constipation. There is no apparent anatomic explanation for postoperative constipation. One patient had a rectal stricture and another, a recurrence in the shape of an intussusception.

Adult↗
PubMed1992

[Digital cineradiography (DCR) of the act of swallowing. The initial clinical experiences].

Twenty-seven patients with different swallowing disorders were studied by employing digital cineradiography (DCR) for rapid imaging of the pharynx with a temporal resolution of up to 50 frames per second and a maximum spatial resolution of .8 per/mm. To facilitate therapy planning, the DCR study can be transferred to the otorhinolaryngologist via videotape. DCR is capable to substitute analog cine or video techniques in the pre- and postoperative examination of patients with swallowing disorders.

Cineradiography↗
PubMed1997

Erythromycin elicits opposite effects on antro-bulbar and duodenal motility: analysis in diabetics by cineradiography.

We have previously demonstrated by cineradiography analysis that erythromycin (Ery) increases antral contractility and antropyloric coordination in diabetics. The aim of this study was to further characterize antro-bulbar and duodenal motility after Ery i.v. administration. Fourteen diabetic patients (mean age 61.2 years) were randomly allocated to receive either 100 or 500 mg of Ery intravenously 4 hours after a standard solid liquid meal. After ingestion of a barium sulfate suspension, a series of 15 fluorographic plates (one every two seconds) was performed. the same procedure was repeated twice for each subject with a delay of 3 days once before and once after Ery. Antral, bulbar and duodenal areas and evolution diagrams were calculated in baseline conditions and after Ery administration using a graphic table connected to a microcomputer. No differences were found between the two doses of the drug. Ery significantly decreased antral (1284 +/- 268 mm2 vs 704 +/- 181 mm2; P < 0.01) and bulbar areas (127 +/- 26 mm2 vs 73 +/- 21 mm2; P < 0.01). In contrast, duodenal areas were significantly increased after Ery (875 +/- 112 mm2 vs 575 +/- 112 mm2; P < 0.01). This study suggests that the known prokinetic effect of Ery on gastric emptying seen in diabetic patients could be related to an increase of motility in the antrum and in the bulb simultaneously with a relaxation in the duodenum.

Adult↗
PubMed1982

Cineradiography of the pharyngeal stage of deglutition in 150 individuals without dysphagia.

With the aid of cineradiography the pharyngeal stage of deglutition was examined at a speed of 50 and 100 frames per second among 150 individuals without dysphagia. In 124 (83%) the act of swallowing had a symmetrical and synchronous pattern. Different types of aberrations from this pattern were registered in 26 individuals (17%). In seven individuals the epiglottis did not tilt down properly but remained in a transverse position during deglutition. In eight individuals, contrast medium passed into the laryngeal vestibule. Seven individuals had a dysfunction of the cricopharyngeal muscle which did not relax properly. One individual had a web in the upper oesophagus. In all but two individuals the aberrations were isolated and not concomitant with other abnormalities of the act of swallowing.

Adult↗
PubMed2006

[Fluorogram using digital X-ray cineradiography].

We discussed the usefulness of fluorogram obtained using digital X-ray cineradiography (digital-cine-fluorograpy) in the diagnosis of dysphagia, comparied with that of video-fluorograpy. Digital-cine-fluorograpy produces five frames per second. A qualitative evaluation comfirmed that five frames per second was sufficient to grasp movement during swallowing in clinical setting. Digital-cine-fluorograpy imaging was also convenient for clinical practice in that the medical records can be accessed from any workstation. Although the maximum photography time (around 10 seconds) is limited and a higher exposure dose is required, we concluded that digital-cine-fluorograpy is a useful tool for the diagnosis of dysphagia.

Cineradiography↗