| 1. |
|
|
| 2. |
- Abul-Kasim, Kasim, et al.
(författare)
-
Added diagnostic utility of CT perfusion and CT angiography in acute ischemic stroke. Evaluation of three different patient categories
- 2009
-
Ingår i: Functional Neurology. - 0393-5264. ; 24:2, s. 93-98
-
Tidskriftsartikel (refereegranskat)abstract
- Patients with a clinical picture of acute ischemic stroke are a heterogeneous group. The aim of this study was to evaluate the added utility of CT perfusion (CTP) and CT angiography (CTA) in the workup of three different categories of acute ischemic stroke patients. Fifty patients (61 +/- 05 years old) were included in this retrospective analysis. Twenty-nine patients had transient ischemic attacks (TIAs) (Group I), 15 were not eligible for treatment with thrombolysis (Group II) and six showed no improvement after thrombolysis (Group III). CTP and CTA provided additional information, not revealed by plain CT, in all the Group II patients and in one third of the patients belonging to the other groups. The final diagnoses were TIA (n=23), thromboembolic cerebral infarctions (n=22), carotid artery dissection (n=4) and metastases (n=1). Of the 29 patients admitted with TIA, only 22 patients still had this diagnosis on discharge from the stroke unit. Given the risk of impending stroke, it would be important to include these modalities in the initial workup of TIA.
|
|
| 3. |
- Abul-Kasim, Kasim, et al.
(författare)
-
Combined Clinical and Radiological Prognostic Model in Acute Ischemic Stroke
- 2010
-
Ingår i: Acta Neurologica Belgica. - 2240-2993. ; 110:3, s. 239-245
-
Tidskriftsartikel (refereegranskat)abstract
- We sought to propose and test the validity of a comprehensive prognostic model in middle cerebral artery-stroke treated with Intravenous thrombolysis. A total of 127 consecutive patients (aged 70 +/- 12 years; 54% males) were included in this retrospective study. Variables included in our prognostic model were: NIHSS on admission (1-3 points), occurrence of hyperdense middle cerebral artery sign and early ischemic signs on baseline CT (1 point each). NIHSS at 24 hours (0-3 points), posttreatment hemorrhage (1 point), and infarct volume (0-4 points). The score range teas 1-13, with higher values suggest unfavorable prognosis. Our prognostic score was correlated with the modified Rankin scale (mRS) at 3 months after stroke [correlation coefficient of 0.62, P < 0.001] and can thus help early prediction of the functional outcome. Logistic regression showed that NIHSS at 24 hours and EICs on baseline CT were independent predictor of our prognostic score (adjusted odds ratio of 4.1 and 5). Adopting a cut-off value of prognostic score <= 3 for favorable prognosis and >= 7 for unfavorable prognosis helped to predict the need for institutionalization and the functional outcome with higher accuracy and predictive values compared with using scores only based on NIHSS.
|
|
| 4. |
- Abul-Kasim, Kasim, et al.
(författare)
-
Differentialdiagnoser
- 2010
-
Bok (övrigt vetenskapligt/konstnärligt)
|
|
| 5. |
|
|
| 6. |
- Abul-Kasim, Kasim, et al.
(författare)
-
Interobserver and intraobserver agreement in the evaluation of CT perfusion in ischemic stroke
- 2009
-
Ingår i: Functional Neurology. - 0393-5264. ; 24:3, s. 139-145
-
Tidskriftsartikel (refereegranskat)abstract
- Knowledge of interrater reliability in the evaluation of perfusion computed tomography (CTP) studies is very limited even though the method is widely used in the workup of acute stroke. The aims of this study were to estimate the inter- and intraolbserver agreement in the evaluation of CTP data and to evaluate the feasibility of the method. The CTP data of 20 consecutive patients (50% were females) aged 68 +/- 11 years with different categories of acute ischemic stroke were included in this retrospective analysis. Perfusion studies were evaluated independently by six radiologists on two different occasions. The overall inter- and intraolbserver agreement was substantial, showing a K value of 0.65 (95% confidence interval 0.39-0.91). The time required for the post-processing and interpretation ranged from 37 to 460 seconds. Evaluation of manually post-processed CTP data according to the maximum slope model appears to be reliable. Experience and also a short training period increase the reliability of the method and reduce the time needed for delivery of the results to the treating clinician.
|
|
| 7. |
- Abul-Kasim, Kasim, et al.
(författare)
-
Intradural spinal tumors: current classification and MRI features
- 2008
-
Ingår i: Neuroradiology. - : Springer Science and Business Media LLC. - 1432-1920 .- 0028-3940. ; 50:4, s. 301-314
-
Tidskriftsartikel (refereegranskat)abstract
- The differential diagnosis of intradural spinal tumors is primarily based on location, but the clinical presentation, age, and gender of the patient are also important factors in determining the diagnosis. This comprehensive review focuses on the current classification, clinical symptoms, and MRI features of the more common intradural extramedullary and intramedullary neoplastic lesions. This review does not include extradural lesions.
|
|
| 8. |
- Abul-Kasim, Kasim, et al.
(författare)
-
Low-dose helical computed tomography (CT) in the perioperative workup of adolescent idiopathic scoliosis.
- 2009
-
Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 19, s. 610-618
-
Tidskriftsartikel (refereegranskat)abstract
- The study aims were to estimate the radiation dose in patients examined with low dose spine CT and to compare it with that received by patients undergoing standard CT for trauma of the same region, as well as to evaluate the impact of dose reduction on image quality. Radiation doses in 113 consecutive low dose spine CTs were compared with those in 127 CTs for trauma. The inter- and intraobserver agreement in measurements of pedicular width, and vertebral rotation, measurements of signal-to-noise ratio and assessment of hardware status were the indicators in the evaluation of image quality. The effective dose of the low dose spine CT (0.37 mSv) was 20 times lower than that of a standard CT for trauma (13.09 mSv). This dose reduction conveyed no impact on image quality. This low dose spine CT protocol allows detailed evaluation that is necessary for preoperative planning and postoperative evaluation.
|
|
| 9. |
- Abul-Kasim, Kasim, et al.
(författare)
-
MRI Findings in Spinal MRI of 306 Children with Scoliosis. A Comprehensive Retrospective Analysis.
- 2008
-
Ingår i: The Neuroradiology Journal. ; 21:5, s. 672-677
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to analyze the MRI findings and assess the prevalence of different associated structural abnormalities in children with scoliosis and to determine if the age of onset is a possible indicator of intraspinal pathology. This is a retrospective analysis of 663 consecutive MR examinations (319 patients). Thirteen patients with known intraspinal tumors were excluded and a total of 306 patients aged 2-18 years with scoliosis were subjected for analysis. The scoliosis was regarded as idiopathic in 62% of patients. Among the remaining 38% the most commonly seen abnormality was syrinx and Chiari malformations. There was no statistically significant difference in the occurrence of syrinx only or syrinx associated with Chiari I malformation in patients younger than ten years and those older than ten years. MRI examination is an essential part of the work up of scoliosis in the pediatric population especially before any corrective surgery. This study and a review of the current literature suggest there is no clinical marker that would definitely serve as an indicator of the presence of intraspinal pathology in these patients.
|
|
| 10. |
|
|
