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S R Nokes

Publications and source records attributed to S R Nokes.

67 records · Page 4Linked to original sources
PubMed1989

Herniation pits of the femoral neck: appearance at MR imaging.

Herniation pits of the femoral neck are benign lesions recognized because of their characteristic appearance and location on plain radiographs. The appearance of this lesion in seven magnetic resonance (MR) examinations of the hips in five patients is described. MR revealed a well-marginated, round to oval defect in the superior lateral quadrant of the femoral neck with anterior cortical extension in all cases. With T1 weighting the signal intensity within each lesion was uniformly low. All but one case revealed a peripheral margin of absent signal intensity on T2-weighted and out-of-phase images. The MR appearance and location are sufficiently characteristic to allow identification of this lesion and aid in differentiating it from pathologic processes such as avascular necrosis, with which it may be confused.

Adult↗
PubMed1989

Correlation of magnetic resonance imaging and surgical findings in patients with meniscal perforation.

Advancement of surgical techniques has made it necessary to accurately diagnose internal derangements. Arthrography and computerized tomography have been used to diagnose the majority of temporomandibular joint disorders; however, these methods have had their disadvantages. Magnetic resonance imaging utilizing surface coils has greatly improved the ability to diagnose meniscus abnormalities without using interarticular injections or ionizing radiation. Ninety-two patients (184 joints) were evaluated by means of magnetic resonance imaging (MRI). Thirty-one patients (39 joints) were diagnosed as having meniscus perforation. Retrospective reviews of 15 patients (20 joints) with a perforated meniscus diagnosed by magnetic resonance imaging preoperatively demonstrated a 65% correlation between the radiographic diagnosis and the surgical findings.

Adult↗
PubMed1987

Childhood scoliosis: MR imaging.

The spinal cords of 28 scoliosis patients between the ages of 1 month and 17 years were examined with magnetic resonance (MR) imaging. Complete visualization was obtained in all cases. In 15 patients (53%) neuropathologic abnormalities demonstrated by MR imaging significantly affected their clinical course, including tethered cords (n = 7), syringomyelia (n = 5), Arnold-Chiari I malformation (n = 4), spinal cord tumors (n = 2), Arnold-Chiari II malformation (n = 3), and diastematomyelia (n = 1). The advantages of MR imaging in the evaluation of the scoliotic spine in children include a high sensitivity for the occult conditions associated with scoliosis, good anatomic demonstration of the cord, and absence of bone artifacts. MR imaging is recommended as a primary imaging modality in scoliosis, following conventional radiography.

Arnold-Chiari Malformation↗
PubMedDate not supplied

Significance of vaginal air on computed tomography.

The CT examinations of the pelvis in 200 females were reviewed to assess the frequency and significance of finding air in the vagina. Small amounts of air seen on only one section without distention of the vagina were common, occurring in 11% of our patients. Distention of the vagina with air and visualization on more than one image was found only with enterovaginal fistula and in those patients studied with a tampon in place. These two entities are easily distinguished by the symmetry of the latter.

Air↗
PubMedDate not supplied

Hepatic adenoma: MR appearance mimicking focal nodular hyperplasia.

A hepatic adenoma (HA) nearly isointense to normal liver on short and long repetition and echo time spin echo pulse sequences is presented. Contrary to previous expectations, the case shows that a single hepatic mass with these signal characteristics on magnetic resonance without a scar may represent either HA or focal nodular hyperplasia.

Adult↗