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J Hindle

Publications and source records attributed to J Hindle.

9 recordsLinked to original sources
PubMed1997

Measurement of vertebral rotation in adolescent idiopathic scoliosis using three-dimensional magnetic resonance imaging.

STUDY DESIGN: This report examines a technique for measurement of axial vertebral rotation using magnetic resonance imaging. OBJECTIVES: To assess the reproducibility of three-dimensional magnetic resonance imaging in the measurement of vertebral rotation at individual endplates in patients with adolescent idiopathic scoliosis. SUMMARY OF BACKGROUND DATA: Deformity in the sagittal and coronal planes in patients with adolescent idiopathic scoliosis can be readily assessed from plain radiographs, but the degree of deformity in the axial plane is more difficult to determine. Plain film techniques have inherent inaccuracies because of loss of definition of anatomic landmarks, and the use of computed tomography is limited by the high radiation dose associated. Magnetic resonance imaging provides a means of imaging scoliotic deformity that allows multiplanar reconstruction and that involves no use of ionizing radiation. METHODS: Ten patients with adolescent idiopathic scoliosis were imaged in a Siemens 1-Tesla impact scanner. Three-dimensional volume images of the apical five vertebrae were obtained in the axial plane and were postprocessed through multiplanar reconstruction. Sections through the superior and inferior endplates of each vertebra were selected in the sagittal and coronal planes, allowing axial reconstructions to be obtained in the plane of each endplate. Vertebral rotation was measured by identifying datum points on the inner surfaces and at the junction of the laminas and comparing the angle subtended by these points with a vertical drawn by the computer. Measurements were obtained from the single scanning sequence on two occasions by one observer and on one occasion by a second observer. Interobserver and intraobserver error was evaluated and correlation with readings obtained from plain films using Perdriolle's torsiometer method assessed. RESULTS: The interobserver variation had a mean of 3.02 degrees (range, 0-10 degrees) and a 95% confidence interval of [2.51 degrees, 3.53 degrees]. The intraobserver variation had a mean of 2.56 degrees (range, 0-7 degrees) and a 95% confidence interval of [1.83 degrees, 3.29 degrees]. The mean difference between measurements obtained from magnetic resonance imaging and plain film was 3.29 degrees (range, 0-12 degrees) with a 95% confidence interval of [1.43 degrees, 5.15 degrees]. CONCLUSIONS: The degree of vertebral rotation can be accurately and reproducibly assessed by three-dimensional magnetic resonance imaging. Measurements can be made through individual endplates that allow assessment of the relative amount of intervertebral and intravertebral deformity.

Adolescent↗
PubMed1997

Understanding business processes.

Presents a background to process understanding which offers potential benefits to the NHS. Considers the various business processes found in health care organizations, noting that the management of cross-functional processes is an area in which improvements can be made. Outlines the kind of problems which can result from mismanagement of such processes and the potential benefits of process improvement.

Commerce↗
PubMed1997

Process improvement and information management.

Notes the importance of continuous improvement as a concept to guide management and that this concept requires numerous components to make it work. Picks out the role of information management as a key area, citing factors such as the creation of an "information culture" as being of major importance. Looks at the path followed by some Trusts in pursuit of this "information culture" wherein staff gained an improved insight into the use of information as a management tool.

Data Collection↗
PubMed1996

Evaluation of gastric antral motor performance in patients with dysmotility-like dyspepsia using real-time high-resolution ultrasound.

Although manometric antral hypomotility and delayed gastric emptying have been reported separately in patients with dyspepsia, relationships between symptoms, antral contractility and emptying rate have not been sought. The present study therefore aimed to evaluate, simultaneously, gastric antral excursion characteristics and emptying in a sub-group of patients with severe functional dyspepsia using high-resolution real-time ultrasound. The circumference of the relaxed and contracted antrum was measured at 15-min intervals after ingestion of a 360 mL mixed nutrient meal in 36 chronic dyspepsia patients with symptoms of post-prandial bloating and epigastric distension, and in 25 healthy volunteers. Antral emptying (measured as the rate of decrease in circumference of the relaxed antrum) was slower in patients than normals (P = 0.02). In both groups, the average values for antral excursion were similar but the range of excursion in patients was significantly wider than in controls (F < 0.001), with 11 patients showing values above, and 8 showing values below the normal range. There was no relationship between antral emptying and antral excursion in either patients or volunteers. In conclusion, patients with severe functional dyspepsia show a wide range of antral performance characteristics, suggesting not only that the mechanisms responsible for the control of antral motor function are disturbed but also that the cause of the symptoms and the disturbed antral motor function are probably not directly related.

Adult↗
PubMed1994

Evaluation of human postprandial antral motor function using ultrasound.

We used high-resolution ultrasound to characterize postprandial antral excursion characteristics in 15 healthy volunteers. Antral circumference was repeatedly measured in the sagittal plane anterior to the abdominal aorta, at 15-min intervals following ingestion of a standard meal. At each recording period, the maximal and minimal antral circumference was noted. In seven volunteers, antral circumference was studied continuously for 5 min at each 15-min recording period to assess the frequency and regularity of antral excursions. Antral circumference increased immediately after meal ingestion from preprandial values of 64 +/- 2.6 (means +/- SE) to 138 +/- 3.1 mm and then gradually decreased with meal emptying to 72 +/- 2.6 mm at 90 min. The continuous recordings of antral images revealed that antral circumference transiently decreased at regular intervals; the interval between successive excursions was 20.1 +/- 0.2 s. There was no change in the excursion interval with emptying. The excursion amplitude decreased from 33 +/- 3.9 mm immediately post-meal ingestion to 13 +/- 1.5 mm at 90 min (r2 = 0.62 +/- 0.07). The ratio between the excursion amplitude and circumference of the relaxed antrum changed only slightly with time (slope = 0.0009 +/- 0.00003). Comparison of repeat studies in 10 volunteers showed a low intra-individual variation for postprandial antral circumference and excursion amplitude.

Adult↗
PubMed1990

Choosing a management course for doctors.

Management is a means of bringing together various NHS activities into an effective service. It is not the exclusive province of the administrator, and doctors should be aware of the range and availability of 'management training course' opportunities which will complement their clinical practice and support their greater involvement in the wider management role.

Curriculum↗