Evidence map›Paper›PMID 24900106›Full record

ArticleNuclear medicine and molecular imaging2013

Parametric Cerebrovascular Reserve Images Using Acetazolamide (99m)Tc-HMPAO SPECT: A Feasibility Study of Quantitative Assessment.

Hongyoon Choi, Min Young Yoo, Gi Jeong Cheon, Keon Wook Kang, June-Key Chung, Dong Soo Lee

Abstract read
In one paragraph

Article in Nuclear medicine and molecular imaging, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.2field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. The Current Status of SPECT or SPECT/CT in South Korea.Nuclear medicine and molecular imaging · 2017
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 2 countries.

Hongyoon ChoiDepartment of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
Min Young YooDepartment of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
Gi Jeong CheonDepartment of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea ; Department of Nuclear Medicine, Seoul National University College of Medicine, 101 Daehangro, Jongro-gu, Seoul, 110-744 Korea.
Keon Wook KangDepartment of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
June-Key ChungDepartment of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
Dong Soo LeeDepartment of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
Seoul National University Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeBasal/acetazolamide stress (99m)Tc-HMPAO single-photon emission computed tomography (SPECT) has been widely used for evaluation of hemodynamics; however, qualitative and subjective visual assessment of cerebrovascular reserve (CVR) has been performed in clinical settings. The aim of this study was to generate parametric CVR images and evaluate its feasibility of quantification.

methodsBasal/acetazolamide stress (99m)Tc-HMPAO SPECT data from 17 patients who underwent bypass surgery or percutaneous transluminal angioplasty were used. Spatial normalization was performed and parametric CVR images were generated using relative CVR (rCVR) of each voxel proportional to CVR of the whole brain. Binary parametric maps to show area of relatively reduced CVR were generated also using threshold of rCVR < 90 %. We calculated rCVR of internal carotid artery (ICA) using the parametric CVR images and probabilistic maps for ICA territory. Pre- and postprocedural parametric CVR images were obtained and quantitative rCVRs were compared. The rCVRs were evaluated according to visual grades for regional decreased CVR.

resultsPostprocedural rCVR obtained from parametric CVR images increased significantly from preprocedural rCVR. The rCVR was significantly correlated with visual grades of reduced CVR for each side of ICA territories.

conclusionsWe generated parametric CVR images for basal/acetazolamide stress (99m)Tc-HMPAO SPECT. As a quantitative measurement, rCVR obtained from the parametric image was feasibly assessed hemodynamic abnormalities with preserved anatomical information.

Indexed as

99mTc-HMPAO SPECTCerebral ischemiaCerebrovascular reserveParametric images

Identifiers

PMID24900106
PMCPMC4035191
OpenAlexW2064692072

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.