| 1. |
- Håkansson, Claes, et al.
(författare)
-
Inter-modality assessment of medial temporal lobe atrophy in a non-demented population: application of a visual rating scale template across radiologists with varying clinical experience
- 2022
-
Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 32, s. 1127-1134
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives To assess inter-modality agreement and accuracy for medial temporal lobe atrophy (MTA) ratings across radiologists with varying clinical experience in a non-demented population. Methods Four raters (two junior radiologists and two senior neuroradiologists) rated MTA on CT and MRI scans using Scheltens' MTA scale. Ratings were compared to a consensus rating by two experienced neuroradiologists for estimation of true positive and negative rates (TPR and TNR) and over- and underestimation of MTA. Inter-modality agreement expressed as Cohen's kappa (dichotomized data), Cohen's kappa(w), and two-way mixed, single measures, consistency ICC (ordinal data) were determined. Adequate agreement was defined as kappa/kappa(w) >= 0.80 and ICC >= 0.80 (significance level at 95% CI >= 0.65). Results Forty-nine subjects (median age 72 years, 27% abnormal MTA) with cognitive impairment were included. Only junior radiologists achieved adequate agreement expressed as Cohen's kappa. All raters achieved adequate agreement expressed as Cohen's kappa(w) and ICC. True positive rates varied from 69 to 100% and TNR varied from 85 to 100%. No under- or overestimation of MTA was observed. Ratings did not differ between radiologists. Conclusion We conclude that radiologists with varying experience achieve adequate inter-modality agreement and similar accuracy when Scheltens' MTA scale is used to rate MTA on a non-demented population. However, TPR varied between radiologists which could be attributed to rating style differences.
|
|
| 2. |
- Håkansson, Claes, et al.
(författare)
-
Reporting frequency of radiology findings increases after introducing visual rating scales in the primary care diagnostic work up of subjective and mild cognitive impairment
- 2021
-
Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 31:2, s. 666-673
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives Study the effect of introducing a template for radiological reporting of non-enhanced computed tomography (NECT) in the primary care diagnostic work up of cognitive impairment using visual rating scales (VRS). Methods Radiology reports were assessed regarding compliance with a contextual report template and the reporting of the parameters medial temporal lobe atrophy (MTA), white matter changes (WMC), global cortical atrophy (GCA), and width of lateral ventricles (WLV) using established VRS in two age-matched groups examined with NECT before (n= 111) and after (n= 125) the introduction of contextual reporting at our department. True positive rate (TPR) and true negative rate (TNR) before and after were compared. Results We observed a significant increase in the percentage of radiology reports with mentioning of MTA from 29 to 76% (p< 0.001), WMC from 69 to 86% (p< 0.01), and GCA from 54 to 82% (p< 0.001). We observed a significant increase in the percentages of reports where all of the parameters were mentioned, from 6 to 29% (p< 0.001). There was a significant increase in TPR from 10 to 55% for MTA. Conclusion This study suggests that contextual radiological assessment using VRS could increase the reporting frequency of radiology findings in the diagnostic work up of cognitive impairment but compliance with templates may be difficult to endorse.
|
|
| 3. |
- Håkansson, Claes, et al.
(författare)
-
Structural imaging findings on non-enhanced computed tomography are severely underreported in the primary care diagnostic work-up of subjective cognitive decline
- 2019
-
Ingår i: Neuroradiology. - : Springer Science and Business Media LLC. - 0028-3940 .- 1432-1920. ; 61:4, s. 397-404
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: The purpose of this study was to investigate how structural imaging findings of medial temporal lobe atrophy (MTA), posterior cortical atrophy (PCA), global cortical atrophy (GCA), white matter changes (WMC), and Evans’ index/width of lateral ventricles (EI/WLV) are reported in the primary care diagnostic work-up of patients with subjective cognitive decline or mild cognitive impairment. Methods: We included 197 patients referred to a non-enhanced computed tomography (NECT) as part of the diagnostic work-up. We compared the frequencies of reported findings in radiology reports written by neuroradiologists and general radiologists with actual pathological findings in a second view done by a single neuroradiologist using the MTA, PCA, GCA, WMC, and EI/WLV visual rating scales. Structural findings were also compared to cognitive tests. Results: We found that MTA and PCA were clearly underreported by both neuroradiologists and general radiologists. The presence of GCA and WMC was also underreported among general radiologists. Only MTA showed a clear association with cognitive test results. Conclusions: We believe that the use of visual rating scales should be put into clinical practice to increase the yield of clinical NECT exams in the investigation of cognitive impairment. Special emphasis should be put on reporting MTA.
|
|
| 4. |
- Janelidze, Shorena, et al.
(författare)
-
Increased CSF biomarkers of angiogenesis in Parkinson disease
- 2015
-
Ingår i: Neurology. - 0028-3878 .- 1526-632X. ; 85:21, s. 1834-1842
-
Tidskriftsartikel (refereegranskat)abstract
- To study biomarkers of angiogenesis in Parkinson disease (PD), and how these are associated with clinical characteristics, blood-brain barrier (BBB) permeability, and cerebrovascular disease.
|
|
| 5. |
- Torisson, Gustav, et al.
(författare)
-
Medial temporal lobe atrophy is underreported and may have important clinical correlates in medical inpatients.
- 2015
-
Ingår i: BMC Geriatrics. - : Springer Science and Business Media LLC. - 1471-2318. ; 15
-
Tidskriftsartikel (refereegranskat)abstract
- The diagnostic workup in dementia includes brain imaging with reading focussed on signs of cerebrovascular and neurodegenerative disease. We hypothesised that these findings may be underreported in hospital patients, where imaging is often performed to rule out obvious pathology such as haemorrhage. In this study, we review cranial computed tomography (CT) in medical inpatients for white matter changes and atrophy. Our aim was to determine the clinical relevance of such findings and to what extent they were underreported.
|
|
