Biomedical subjects

A E Stauffer

Publications and source records attributed to A E Stauffer.

9 recordsLinked to original sources

PubMed1996

Humeral avulsion of the anterior shoulder stabilizing structures after anterior shoulder dislocation: demonstration by MRI and MR arthrography.

OBJECTIVE: To demonstrate the MRI findings of an anterior shoulder capsular avulsion from the humerus, with or without subscapularis rupture, after anterior dislocation or severe abduction external rotation injury. DESIGN AND PATIENTS: We retrospectively reviewed the MRI and MR arthrographic examinations of seven patients who were identified at surgery with avulsion of the anterior shoulder stabilizers from the humerus. MRI was correlated with clinical history and surgical results. RESULTS: MRI findings included: inhomogeneity or frank disruption of the anterior capsule at the humeral insertion (all), fluid intensity anterior to the shoulder (six patients), tear of the subscapularis tendon (six patients), dislocation of the biceps tendon (four patients), and a Hill-Sachs deformity (four patients). MR arthrography additionally found extravasation of contrast through the capsular defect (two patients). CONCLUSIONS: Our findings suggest that MRI is helpful for diagnosing humeral avulsion of the anterior glenohumeral capsule, especially when a tear of the subscapularis tendon insertion is present. MR arthrography may be of benefit for diagnosing capsular avulsion without associated subscapularis tendon abnormality.

Adult↗

PubMed1993

Saline magnetic resonance arthrography in the evaluation of glenohumeral instability.

Sixty-five patients underwent magnetic resonance (MR) shoulder arthrography. Forty-eight of these patients underwent examination under anesthesia (EUA). MR images were retrospectively evaluated for signs felt to be imaging indicators of shoulder instability, including evaluation of various capsular measurements and the presence of glenoid labral tears, as well as Hill-Sachs fractures. Statistical analysis of the results showed that no correlation between capsular indicators with EUA-documented instability was found. However, there was a statistically significant correlation between the presence of a Bankart cartilaginous deformity (p = 0.000) and Hill-Sachs fractures (p = 0.022) with EUA-documented instability. Sensitivity to labral tears was 89% and specificity was 98%, whereas Hill-Sachs fracture detection was 69% and 87%, respectively. We believe that MR saline arthrography is of benefit in the evaluation of the anterior labrum when unenhanced MR imaging is inconclusive, and we speculate on the role of MR arthrography as a primary investigative tool.

Adolescent↗

PubMed1993

Magnetic resonance arthrography of the shoulder.

Recently, there have been attempts to improve the accuracy of MR imaging by distending the glenohumeral joint with fluid prior to imaging. This article reviews the techniques employed in performing MR arthrography, imaging characteristics of MR arthrography, and diagnostic use of the procedure.

Contrast Media↗

PubMed1986

Preoperative evaluation of abdominal aortic aneurysms by computed tomography.

A prospective, preoperative study was conducted of 50 electively repaired abdominal aortic aneurysms comparing the CT and angiographic findings with those described at surgery. CT demonstrated all 50 aneurysms and correctly identified their proximal extent in relation to the takeoff of the renal arteries in 47 patients (94%), while angiography detected 48 aneurysms (96%) and their correct relation to the renal arteries in all (100%). CT correctly identified 40 (98%) of 41 patients with two renal arteries, but only two (29%) of seven with three and none of two patients with four arteries. Common iliac artery involvement or lack thereof was accurately predicted in 42 (84%) of the 50 patients and internal iliac artery aneurysms found in one (33%) of three patients. It was concluded that CT is not sufficiently accurate for documenting location and patency of the renal arteries to allow its routine substitution for angiography in patients undergoing preoperative assessment of abdominal aortic aneurysms.

Aged↗

PubMed1985

Complicated pancreatic inflammatory disease: diagnostic and therapeutic role of interventional radiology.

Diagnostic and therapeutic interventional radiology techniques in 41 patients with complications of pancreatic inflammatory disease (noninfected pseudocyst, infected pseudocyst, phlegmon, abscess, hemorrhagic pancreatitis) are described. Computed tomography or ultrasound-guided aspiration or percutaneous pancreatic ductography enabled specific diagnoses in 43 of 45 patients (96%). In almost half the patients, diagnostic aspiration with 22-gauge needles was unsuccessful due to viscous contents or firm cavity walls. Single-step needle aspiration of noninfected pseudocysts was successful in only three of ten patients (30%). Catheter drainage cured six of seven noninfected pseudocysts (85.7%) and seven of nine infected pseudocysts (77.7%). Pancreatic phlegmons were aspirated in five patients to exclude secondary infection and help determine the need for surgery. Pancreatic abscesses were drained successfully in nine of 13 patients (69.2%); temporizing benefit was achieved in the other four who eventually underwent surgery in improved condition. Early diagnosis of the complications of pancreatitis may be established almost uniformly, and at least 70% of patients with infected or noninfected pseudocysts and pancreatic abscesses may be cured by nonoperative drainage.

Abscess↗

PubMed1984

Percutaneous gastrostomy: use of intragastric balloon support.

To facilitate catheter entrance into the stomach during percutaneous gastrostomy, we sutured a balloon to a nasogastric tube and inflated the balloon in the stomach. The balloon provides support and firmness for the compliant stomach, and prevents the gastric wall from being pushed away by incoming needles and catheters. The balloon frequently becomes palpable in the left upper quadrant and offers a good target fluoroscopically or sonographically. Trocar catheters were easier to insert when the target balloon technique was used, and trocar puncture shortened procedure time. The technique initially was developed in the laboratory and then tested in cadavers. Presently it is used with patients. To date, no specific complications have occurred with this procedure.

Animals↗

PubMed1984

Evaluation of multiplanar reconstruction in CT recognition of lumbar disk disease.

Axial computed tomographic (CT) images were compared with sagittal and coronal reformations and myelograms in 60 patients to evaluate the diagnostic usefulness of multiplanar reconstructions for the recognition of lumbar disk disease. The axial CT scans were most sensitive and specific. The sagittal scans were helpful in evaluating the neural foramina, the size of the disk bulge into the spinal canal, especially at L5-S1, and patients with spondylolisthesis. The coronal images were the least informative, although they contributed to the evaluation of lumbar nerve roots. The myelograms and the sagittal images were equally useful in the detection of herniated disk, but axial scans were superior to either. It was concluded that reformatted sagittal and coronal images are not required if all axial images are normal. However, when uncertainty exists or complex anatomy is being evaluated, reformatted images may be helpful, particularly for reassurance.

Evaluation Studies as Topic↗

PubMed1984

Adrenoleukodystrophy: early frontal lobe involvement on computed tomography.

The computed tomographic (CT) findings in a teenage boy with adrenoleukodystrophy (ALD) are presented. Clinical presentation included the subacute onset of dementia and behavioral changes. Bilateral, isolated, symmetric low density areas were present in the frontal lobes on CT, without contrast enhancement. Minimal calcification was noted in the lesions. This unusual pattern of early frontal lobe demyelination in ALD is discussed.

Adolescent↗

PubMedDate not supplied

Transcatheter gelfoam embolization in intractable prostatic bleeding.

The authors describe a case in which protracted bleeding after a transurethral prostatic resection could not be controlled with repeated fulguration and resection. Hemostasis was obtained with transcatheter arterial Gelfoam embolization of both hypogastric arteries.

Aged↗