Biomedical subjects

M T Buehler

Publications and source records attributed to M T Buehler.

5 recordsLinked to original sources

PubMed1991

Radiographic evaluation of the corporotransverse ligament at the L5 intervertebral foramen: a cadaveric study.

An extraforaminal ligament bisecting the L5/S1 intervertebral foramen and known as the corporotransverse ligament was studied in 15 adult embalmed cadavers. Its relationship to the L5 ventral ramus, sympathetic chain and gray ramus communicans was observed and recorded. The corporotransverse ligament has been implicated as a site for potential entrapment of the L5 nerve. The purpose of this study was to determine if the ligament could be detected radiographically. A single sample spine containing the ligament was hemisected and the neural, vascular and adipose tissue removed. Plain film, linear tomography and axial computed tomography (CT) slices were evaluated and the results compared. The corporotransverse ligament was not visualized by either plain film or linear tomography. Due to its superior resolution in the imaging of soft tissues, the ligament was well demonstrated by CT. Further studies with the neural tissue intact, imaging with magnetic resonance and in vivo comparison studies are recommended.

Dissection↗

PubMed1989

Plain film assessment of spinal stenosis: method comparison with lumbar CT.

Methods to determine the sagittal diameter of spinal canal on plain film radiographs have been previously proposed by Eisenstein in 1975 and Buehler in 1978. The purpose of this study was to determine the accuracy of these methods as compared to computed tomography (CT) and to compare the accuracy of each method. The AP diameter of the lumbar canal was evaluated at the L3 through L5 levels. Results indicate that the Buehler method was significantly (p less than or equal to 0.05) more accurate than Eisenstein method at the L3 level. At L4 and L5, there were no significant (p less than or equal to 0.01 p less than or equal to 0.20, respectively) differences between either of the plain film measurements and the mean value of the corresponding CT scans. The standard deviation (SD) showed less dispersity of the measurements with the Buehler method at all three levels examined.

Humans↗

PubMed1986

Multilevel spinal stenosis: a case report.

Presented here is a case of lumbar spine lateral recess stenosis. A brief discussion of etiology, symptoms, diagnosis and the role of imaging is included. The accuracy of computed tomography provides the radiologist with the opportunity of frequently identifying the type of stenosis and informing the clinician of the exact anatomical location.

Humans↗

PubMed1985

Application of lead-acrylic compensating filters in chiropractic full spine radiography: a technical report.

X-raying the entire spinal column in the standing position in a single exposure (mainly the AP projection) is an often-used chiropractic radiography procedure which has also found some application in medical scoliosis screening program. Aside from any controversy of clinical objectives or medical necessity, the primary agreed-upon requisite for such procedure is twofold; achieving the best possible film image quality with the least amount of radiation exposure to the patient. A popular method of accomplishing this objective is by the use of collimator-attached devices designed to selectively filter the primary x-ray beam in accordance with regional variations of body thickness and/or density. This study was conducted to evaluate the use of a new lead-acrylic filter system (a prior model of which had previously been evaluated for its use in medical radiography) under specialized chiropractic conditions. In comparison to other available systems, it was concluded that this new system; a) is generally equivalent in its radiation dose reduction capabilities; b) is capable of producing full spine radiographs with good to above average image quality; and c) is appreciably easier to use.

Acrylates↗

PubMedDate not supplied

Fibrosarcoma of the cervical spine.

The clinical and radiographic presentation of fibrosarcoma of the third cervical segment is presented. Conventional radiographic examination and advanced imaging in this case revealed destruction of the C3 vertebral body and neural arch with extension into the spinal canal and paravertebral soft tissues. Surgical pathology revealed a pre- and postoperative diagnosis of fibrosarcoma.

Cervical Vertebrae↗