Evidence map›Paper›PMID 26938697›Full record

ArticleJournal of computer assisted tomography

Implementation and Performance of Automated Software for Computing Right-to-Left Ventricular Diameter Ratio From Computed Tomography Pulmonary Angiography Images.

Kanako K Kumamaru, Elizabeth George, Ayaz Aghayev, Sachin S Saboo, Ashish Khandelwal, Sara Rodríguez-López, Tianrun Cai, Daniel Jiménez-Carretero, Raúl San José Estépar, Maria J Ledesma-Carbayo and 2 more

Abstract readEvaluation Study
In one paragraph

Article in Journal of computer assisted tomography. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

6 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. 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

12 authors.

Kanako K KumamaruFrom the *Applied Imaging Science Laboratory, Department of Radiology, Brigham and Women's Hospital, Boston, MA; †Department of Radiology, Juntendo University, Tokyo, Japan; ‡Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX; §Biomedical Image Technologies, Universidad Politécnica de Madrid & CIBER-BBN, Madrid, Spain; ∥Surgical Planning Laboratory, Brigham and Women's Hospital, Boston; and ¶Madrid-MIT M+Visión Consortium, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA; and #Department of Radiology, The Ottawa Hospital and Ottawa University, Ottawa, Ontario, Canada.
Elizabeth George
Ayaz Aghayev
Sachin S Saboo
Ashish Khandelwal
Sara Rodríguez-López
Tianrun Cai
Daniel Jiménez-Carretero
Raúl San José Estépar
Maria J Ledesma-Carbayo
Germán González
Frank J Rybicki

Funding

Airway Inspector: a chest imaging biomarker software platform for COPDR01HL116931 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI SAN JOSE ESTEPAR, RAUL · 2013 to 2017
$2.2M
NHLBI NIH HHS R01 HL116931
6 · The paper itself

Abstract

objectiveThe aim of this study was to prospectively test the performance and potential for clinical integration of software that automatically calculates the right-to-left ventricular (RV/LV) diameter ratio from computed tomography pulmonary angiography images.

methodsUsing 115 computed tomography pulmonary angiography images that were positive for acute pulmonary embolism, we prospectively evaluated RV/LV ratio measurements that were obtained as follows: (1) completely manual measurement (reference standard), (2) completely automated measurement using the software, and (3 and 4) using a customized software interface that allowed 2 independent radiologists to manually adjust the automatically positioned calipers.

resultsAutomated measurements underestimated (P < 0.001) the reference standard (1.09 [0.25] vs1.03 [0.35]). With manual correction of the automatically positioned calipers, the mean ratio became closer to the reference standard (1.06 [0.29] by read 1 and 1.07 [0.30] by read 2), and the correlation improved (r = 0.675 to 0.872 and 0.887). The mean time required for manual adjustment (37 [20] seconds) was significantly less than the time required to perform measurements entirely manually (100 [23] seconds).

conclusionsAutomated CT RV/LV diameter ratio software shows promise for integration into the clinical workflow for patients with acute pulmonary embolism.

Indexed as

Computed Tomography AngiographySoftwareAlgorithmsHeart VentriclesHumansMachine LearningMiddle AgedObserver VariationOrgan SizePattern Recognition, AutomatedPulmonary ArteryPulmonary EmbolismRadiographic Image EnhancementRadiographic Image Interpretation, Computer-AssistedReproducibility of ResultsSensitivity and Specificity

Identifiers

PMID26938697
PMCPMC6095645

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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.