ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03148.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03149.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACTMagnetic Resonance Imaging (MRI) at 0.3T and Computed Tomography (CT) were compared in the retrospective evaluation of 34 patients with acute spinal cord injury. MRI was highly accurate in the imaging of vertebral body fracture, and spondylitk changes, and is the method of choice for imaging ligament injury, traumatic disc protrusion and spinal cord compression. It was also useful for the identification of subtle subluxations in the sagittal plane. CT remains the method of choice for imaging neural arch fractures. MRI at 0.3T is a valid technique for assessing patients with acute spinal trauma.

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03150.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACT:MRI at 0.3 T and CT with myelo‐graphic contrast (CTM) were compared in the retrospective evaluation of 35 patients investigated for the development of new neurological symptoms following longstanding spinal cord injury.Compared with MRI, CTM was relatively accurate for the demonstration of spinal cord compression, but failed to identify 23% of patients with spinal cord atrophy, and 43% of patients with post‐traumatic syrinx formation. However, 5 patients had unsatisfactory MR imaging, either due to motion or metallic artifact, and in 3 of these, CTM demonstrated a syrinx.Although MRI is the method of choice in the investigation of this problem. CTM may still be required for patients with an unsatisfactory MR examination.Magnetic Resonance (MR) imaging is now an established technique for imaging the spine, with accurate depiction of the spinal cord, as well as the adjacent soft tissues (1, 2). However, the cost of this technique, and its as yet limited availability in Australasia, has resulted in the necessity to demonstrate its superiority over other imaging modalities for any specific clinical problem (3). One of the major areas of impact of MR has been in the investigation of the problem of acute neurological deterioration in patients with past spinal trauma (4, 5, 6). Some of these patients will have treatable causes of deterioration, either a post‐traumatic syrinx, or spinal cord compression (6), and MR can be used to image these conditions (7), which, until recently, were investigated with computed tomography with myelographic contrast medium (CTM), (8, 9).In the largest reported study comparing MR and CTM, Betzet al(6) reported the results of 43 children who were investigated up to 48 months from original injury, of whom 24 had CTM. They concluded that although MR was indicated for the evaluation of subacute and chronic spinal cord injured patients, CT‐myelography remained essential before considering surgery for spinal cord decompression (6).We retrospectively evaluated the results of MR and CT‐myelography in 35 patients who developed new symptoms following past spinal cord injury to determine whether there was still any place for CTM in the evaluation of thi

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03151.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACTForty patients with karyotypidy proven Turner syndrome were prospectively studied using magnetic resonance imaging (MRI) and echocardiography in order to determine the frequency of cardiovascular anomalies and to assess the utility of both imaging modalities as methods for cardiovascular evaluation in Turner syndrome. Cardiovascular anomalies were found in 45% of patients A high absolute prevalence of bicuspid aortic valve (175%) and aortic coarctation (12.5%) were observed relative to comparable series. Of clinically significant abnormalities, three of five aortic coarctations and four of five ascending aortic dilatations were solely MRI detected and not evident at echocardiographic examination. MRI is thus seen as a valuable adjunct to echocardiography in the cardiovascular evaluation of Turner syndrome patients. The usefulness of MIU primarily relates to its ability to provide excellent visualisation of the entire thoracic aorta where a large proportion of clinically significant anomalies Occur in Turner syndrome.

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03152.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACTThe aim of this study was to establish a practical, simple protocol that reliably produces high quality dynamic incremental computed tomography (CT) of the liver.We reviewed 90 patients randomly allocated into six different protocols. All had preliminary unehanced scans followed by a dynamic incremental CT of the liver. An initial delay of 30 seconds was used from the commencement of the injection of Iopamiro 370. The groups were:1Pump infusion(a) 100 mls at 2 mls/sec scanning inferosuperiorly.(b) 100 mls at 2 mls/sec scanning superoinferiorly.(c) 100 mls at 1 ml/sec scanning inferosuperiorly.(d) 50 mls at 1 ml/sec scanning inferosuperiorly,240 mls hand injected bolus followed immediately by 60 ml pump infusion at 1.3 mls/sec scanning inferosuperiorly.350 mls hand injected bolus scanning inferosuperiorly.The parameters recorded were the degree of hepatic parenchymal and hepatic venous enhancement and the aortic ‐ IVC difference at the last slice through the liver, all measured in Hounsfield units.The protocols using 100 mls of contrast produced approximately twice the parenchymal and hepatic venous enhancement compared with those using 50 mls. Approximately 60–90% of examinations using 100 rnls produced scans through the entire liver during the bolus or non‐equilibrium phase, deemed the most sensitive for the detection of focal lesions, compared with 13–33% of those using 50 mls. Equally satisfactory results were obtained using the relatively inexpensive Biotel power injector preceded by a 40 ml hand injected bolus, compared with using an Angiomat angiography infusion pump.We conclude that 100ml of contrast medium is necessary to achieve high quality liver CT scans and that this can be adequately delivered using a combination of a hand injection and an infusion from a relatively inexpensi

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03153.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACTNine patients with lymphoproliferative malignancies, one of whom had not been previously diagnosed, were found on CT examination for back pain to have partial or complete soft tissue perivertebral collars. The thoracic and or lumbar regions were involved in all. Only 3 had gross bony changes at the time, and in others the changes appeared so innocuous that in combination with the vague clinical symptoms their significance was underestimated. Five patients ultimately had episodes of cord compression, and in all nine the appearance of this spinal lesion appeared to be d grave prognostic significance. All 9 were dead within 1 year of the presentation of their spinal lesionsThe observation of a perivertebral collar in the context of a known or suspected lymphoproliferative malignancy should therefore raise the strong suspicion of spinal involvement. The vertebrae should be examined on bone windows and the contents of the spinal canal on narrow windows to assess bony and epidural spread.

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03154.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03155.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACTThis paper discusses the cases of 5 patients who have had therapeutic occlusion of their pulmonary arteriovenous malformations (PAVM) performed radiologically at Alfred Hospital in the past 4 years. The salient pathological, clinical and radiological features of PAVM are also presented.

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03156.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

ABSTRACTInability to access occluded grafts is a major limitation to successful thrombolysis and may even preclude it. This paper addresses the problem and offers a new technique of direct puncture of prosthetic grafts through which thrombolysis and angioplasty can be performed. These techniques resulted in accelerated thrombolysis in all 15 patients studied with no failures due to inability to attain graft access.

ISSN:0004-8461    

DOI:10.1111/j.1440-1673.1992.tb03157.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY