Pre-operative embolization, surgical resection, and follow-up evaluation of a giant intercostal schwannoma.

Intercostal schwannomas can present incidentally and lead to compressive thoracic symptoms. These slow-growing and benign tumors typically arise from intercostal nerves and are supplied by intercostal arteries, which may increase the risk of hemorrhagic complications with surgical resection. Due to the rarity of intercostal schwannomas, there exists no standardized management algorithms.

The segment as the minimal planning unit in speech production: evidence based on absolute response latencies.

A minimal amount of information about a word must be phonologically and phonetically encoded before a person can begin to utter that word. Most researchers assume that the minimum is the complete word or possibly the initial syllable. However, there is some evidence that the initial segment is sufficient based on longer durations when the initial segment is primed.

Injuries of the lateral collateral ligaments of the ankle: assessment with MR imaging.

The aim of this study was to evaluate the ability of MRI to display injuries of the lateral collateral ligamentous complex in patients with an acute ankle distorsion trauma. The MR examinations of 36 patients with ankle pain after ankle distorsion were evaluated retrospectively without knowledge of clinical history, outcome and/or operative findings. The examinations were performed on a 1.

[Diagnosis of primary sclerosing cholangitis: prospective comparison of MR cholangiography with endoscopic retrograde cholangiography].

Purpose: To assess the accuracy of MR cholangiography (MRC) in the diagnosis of primary sclerosing cholangitis (PSC) in comparison to endoscopic retrograde cholangiography (ERC).

Method: 20 patients with PSC were examined by ERC and MRC (1.0 T, HASTE sequence).

Effect of anatomic distribution of pulmonary emboli on interobserver agreement in the interpretation of pulmonary angiography.

Objective: This study examines the anatomic distribution of emboli on pulmonary angiography and attempts to determine the relationship of vessel size to interobserver agreement, two factors having important implications in comparing pulmonary angiography with cross-sectional imaging for pulmonary embolism.

Materials And Methods: One hundred twenty-five consecutive pulmonary angiograms were reviewed retrospectively by three interventional radiologists. Initial interpretations were recorded and compared to determine interobserver agreement on a per-patient and per-embolus basis.

Single institution prospective evaluation of the over-the-wire Greenfield vena caval filter.

Purpose: To assess the technical and clinical success of the over-the-wire (OTW) Greenfield inferior vena caval (IVC) filter.

Materials And Methods: Prospective evaluation of the OTW Greenfield filter in 47 patients was performed during the course of 18 months. Technical success and deployment problems were documented.

[MRI of knee ligaments: error analysis with reference to meniscus and anterior cruciate ligaments in an arthroscopic controlled patient cohort].

Purpose: To categorise discrepancies in findings of the menisci and anterior cruciate ligament (ACL) between arthroscopy and MRI.

Materials And Methods: The MRIs of 236 patients were retrospectively analysed by an experienced radiologist without knowledge of clinical and/or operative findings. Discrepancies in arthroscopic findings were reevaluated together with the arthroscopist to determine their cause of error.

[Rupture of lateral ligaments of the ankle joint: MR imaging before and after functional therapy].

Purpose: Documentation via MRI of the healing of ruptured lateral collateral ankle ligaments after functional therapy.

Patients And Methods: 35 patients with ankle sprain were examined by MRI and stress radiographs, 13 were operated afterwards, 22 patients underwent a functional conservative therapy and were examined by MRI and stress radiographs and second time after three months.

Results: MRI reports were correct in 12 of 13 operated cases.

[A mannitol solution as an oral contrast medium in pelvic MRT].

Purpose: Improvement of pelvic MRI using peroral administration of an aqueous mannitol solution.

Methods: We retrospectively evaluated magnetic resonance examinations of 72 patients with suspected or proven pelvic abnormalities: In 36 patients, no bowel marking was carried out. In further 36 patients, we performed a contrast enhancement of the bowel by oral application of 1000 ml of an aqueous mannitol solution.

[The value of MR tomography in traumatic patella dislocations].

Purpose: To describe the MR imaging findings in patients with lateral patellar dislocation.

Material And Methods: The MRIs of 31 patients with patellar dislocation were evaluated retrospectively. Arthroscopic surgery was performed in 23 cases.

[Optimizing pelvic MR diagnosis with a new gastrointestinal contrast medium].

Aim: Optimization of pelvic MRI by a new concept of water-equivalent bowel contrast agent.

Methods: We performed contrast enhancement of the bowel by oral application of 1000 ml of an aqueous mannitol solution one hour before pelvic MRI. In addition we performed an enema by 250 ml of water in one patient.

[The magnetic resonance tomographic findings following the resection arthroplasty of the caput humeri].

Purpose: The resection of the humeral head is normally carried out only with respect to four-part and dislocation fractures in elderly patients. The purpose of this study was to examine whether there is a correlation between the clinical results and the MRI findings.

Material And Methods: 8 patients underwent clinical and MR examination two to 6 years after resection.

Parosteal osteosarcoma of the talus.

A case of parosteal osteosarcoma in the very rare location of the talus is presented. The radiological, pathological, and clinical characteristics of parosteal osteosarcoma are described and the differential diagnosis discussed.

[THe differentiation between benign and malignant liver lesions by unenhanced MRI].

Unlabelled: The aim of the study was to establish qualitative criteria for differentiating between malignant and benign focal lesions of the liver using unenhanced MRT at 0.5 Tesla.

Patients And Method: 72 patients with 103 focal liver lesions were examined with T1 and T2 weighted SE sequences.

[MRI monitoring of reconstruction of ligaments of the upper ankle joint after injury].

The therapy of fibular ligament ruptures is still a controversial subject. Reports on healing processes following operative or conservative treatment have been verified hitherto by means of clinical examinations and stress tests. The MRT, as a highly sensitive non-invasive method, allows exact documentation of the ligament structures in the ankle joints.

[1H-MR spectroscopic imaging: an approach to evaluating alcohol breakdown in the brain].

The local alcohol concentration in the human brain was determined in 10 cases using MR spectroscopic imaging. Therefore 7 subjects with an average blood alcohol concentration of 0.8/000 were examined after oral intake of alcoholic beverages.

[Reliability of imaging procedures in multi-visceral gynecologic operations of the pelvis].

Between March 1989 and December 1992, a total of 85 pelvic exenterations were performed in the Department of Gynaecology and Obstetrics of the University of Mainz. To assess the accuracy of preoperative Magnetic Resonance Imaging (MRI) and Computer Tomography (CT) with regard to tumour localisation and spread, the results of 28 MRI and 14 CT examinations were compared with the postoperative histological findings. For this widely varying patient group that had undergone a broad range of previous treatments, MRI produced an accurate forecast in 56% of cases (CT, 36%).

[Gadolinium-DTPA (Magnevist) as contrast medium for arterial DSA].

16 DSA investigations using intra-arterial Gd-DTPA were performed on 12 patients. The contrast medium was administered either as a 0.5 molar gadolinium solution (commercially available) or diluted with distilled water to a 0.

[Application possibilities of MR arthrography in diseases of the shoulder joint].

In a prospective study possible indications for MR arthrography of the shoulder were evaluated. 37 patients were examined before and after intraarticular administration of a 2-mmolar solution of Gd-DTPA. MR arthrography was performed if there was no joint effusion and/or an uncertain finding concerning the rotator cuff or the capsulolabral complex on plain MR images.

[MRT for surgical planning in anal atresia].

We evaluated in this study the value of preoperative examinations of anal atresia with an optimised MRI strategy. 13 patients with anorectal anomalies, most of them younger than one year, underwent an MRI examination of the pelvis. 10 of these patients were operated afterwards.

[Detection of primarily unrecognized fractures in severely injured patients by skeletal scintigraphy].

Even in despite of diligent investigation clinical and radiological diagnostics can leave fractures unrecognized in seriously injured patients. Bone-scans of 53 patients revealed 68 additional fractures. In 45% of all cases the initial diagnosis was altered, 19% resulted in therapeutical consequences.