| SPECTCT cerebral perfusion scintigraphy; is the low-dose CT component of diagnostic value? | |
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MedLine Citation:
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PMID: 18275869 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIM: To assess the potential diagnostic value of the low-dose computed tomography (CT) component of dual-examination single photon emission CT and CT (SPECTCT) cerebral perfusion studies. METHOD AND MATERIALS: Two hundred and forty consecutive 99 mTc hexamethylpropylene amine oxime (HMPAO) SPECTCT studies were considered for inclusion. The images were acquired on a hybrid dual-head gamma camera/low-dose CT system. The CT component had a fixed tube current of 2.5 mA. The CT section thickness was 5mm and total acquisition time approximately 7.5 min. Studies in which no CT images were acquired, or those excessively degraded by movement artefact were excluded. The CT images of each of the remaining studies were retrospectively reviewed and categorized as normal or abnormal. Details of the abnormalities were recorded. RESULTS: Fifteen of the 240 studies were excluded as no CT images were obtained. A further 14 were excluded as they were considered excessively degraded by movement artefact. A single abnormality was demonstrated on 48 (23%), and two abnormalities on four (2%) of the remaining 211 studies. The most common abnormal findings were low attenuation in the deep cortical white matter (n=22), infarcts (n=12), cerebral atrophy (n=7), dilated ventricles (n=5), basal ganglia calcification (n=4), and post-surgical change (n=3). Other findings included a chronic subdural haematoma, a meningioma, and a posterior fossa cyst. Previous cerebral imaging was available for comparison in 31% of cases. There was 85% concordance between previous imaging and the low-dose CT images. CONCLUSION: Twenty-five percent of the low-dose CT images in this study demonstrated abnormalities. Therefore the CT component of cerebral perfusion SPECTCT investigations should be routinely reported in their own right. |
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Authors:
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T V C Sulkin; C Cousens |
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Publication Detail:
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Type: Journal Article Date: 2007-11-26 |
Journal Detail:
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Title: Clinical radiology Volume: 63 ISSN: 0009-9260 ISO Abbreviation: Clin Radiol Publication Date: 2008 Mar |
Date Detail:
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Created Date: 2008-02-15 Completed Date: 2008-04-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 1306016 Medline TA: Clin Radiol Country: England |
Other Details:
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Languages: eng Pagination: 289-98 Citation Subset: IM |
Affiliation:
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Department of Clinical Imaging, The Royal Cornwall Hospital, Truro, Cornwall, UK. tom.sulkin@rcht.cornwall.nhs.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Brain / radiography*, radionuclide imaging Brain Diseases / radiography*, radionuclide imaging Female Humans Male Oximes / administration & dosage Radiation Dosage Retrospective Studies Tomography, Emission-Computed, Single-Photon / methods* Tomography, X-Ray Computed / methods* |
| Chemical | |
Reg. No./Substance:
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0/Oximes; 0/hexamethylpropyleneamine oxime |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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