Evidence map›Paper›PMID 37766055›Full record

ArticleSensors (Basel, Switzerland)2023

Deep-Learning-Aided Evaluation of Spondylolysis Imaged with Ultrashort Echo Time Magnetic Resonance Imaging.

Suraj Achar, Dosik Hwang, Tim Finkenstaedt, Vadim Malis, Won C Bae

Open access · goldAbstract read
In one paragraph

Article in Sensors (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Spondylolysis: A Narrative Review of Etiology, Diagnosis, and Management.International journal of environmental research and public health · 2026
    Review
  5. Evaluation of fracture lines in adolescent lumbar spondylolysis using MR bone imaging as an alternative to computed tomography.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
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

5 authors at 3 institutions in 3 countries.

Suraj AcharDepartment of Family Medicine, University of California-San Diego, La Jolla, CA 92093, USA.
Dosik HwangDepartment of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea.ORCID 0000-0002-2217-2837
Tim FinkenstaedtInstitute of Diagnostic and Interventional Radiology, University Hospital Zurich, University Zurich, 8091 Zurich, Switzerland.ORCID 0000-0002-8807-7306
Vadim MalisDepartment of Radiology, University of California-San Diego, La Jolla, CA 92093, USA.
Won C BaeDepartment of Radiology, University of California-San Diego, La Jolla, CA 92093, USA.ORCID 0000-0003-2616-0339
University of California San Diego · USUniversity Hospital of Zurich · CHYonsei University · KR

Funding

Resource-based Center for the study of the joint microenvironment in rheumatology (Overall Application)P30AR073761 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CORR, MARY P · 2018 to 2022
$3.9M
Ultrashort Time to Echo MRI of Disco Vertebral JunctionR01AR066622 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BAE, WON C · 2015 to 2019
$1.7M
NIAMS NIH HHS P30 AR073761NIAMS NIH HHS R01 AR066622NIH HHS AR066622NIH HHS AR073761
6 · The paper itself

Abstract

Isthmic spondylolysis results in fracture of pars interarticularis of the lumbar spine, found in as many as half of adolescent athletes with persistent low back pain. While computed tomography (CT) is the gold standard for the diagnosis of spondylolysis, the use of ionizing radiation near reproductive organs in young subjects is undesirable. While magnetic resonance imaging (MRI) is preferable, it has lowered sensitivity for detecting the condition. Recently, it has been shown that ultrashort echo time (UTE) MRI can provide markedly improved bone contrast compared to conventional MRI. To take UTE MRI further, we developed supervised deep learning tools to generate (1) CT-like images and (2) saliency maps of fracture probability from UTE MRI, using ex vivo preparation of cadaveric spines. We further compared quantitative metrics of the contrast-to-noise ratio (CNR), mean squared error (MSE), peak signal-to-noise ratio (PSNR), and structural similarity index (SSIM) between UTE MRI (inverted to make the appearance similar to CT) and CT and between CT-like images and CT. Qualitative results demonstrated the feasibility of successfully generating CT-like images from UTE MRI to provide easier interpretability for bone fractures thanks to improved image contrast and CNR. Quantitatively, the mean CNR of bone against defect-filled tissue was 35, 97, and 146 for UTE MRI, CT-like, and CT images, respectively, being significantly higher for CT-like than UTE MRI images. For the image similarity metrics using the CT image as the reference, CT-like images provided a significantly lower mean MSE (0.038 vs. 0.0528), higher mean PSNR (28.6 vs. 16.5), and higher SSIM (0.73 vs. 0.68) compared to UTE MRI images. Additionally, the saliency maps enabled quick detection of the location with probable pars fracture by providing visual cues to the reader. This proof-of-concept study is limited to the data from ex vivo samples, and additional work in human subjects with spondylolysis would be necessary to refine the models for clinical use. Nonetheless, this study shows that the utilization of UTE MRI and deep learning tools could be highly useful for the evaluation of isthmic spondylolysis.

Indexed as

Deep LearningFractures, BoneSpondylolysisAdolescentHumansMagnetic Resonance ImagingTomography, X-Ray Computedbone fractureimage processingimage regressionlow back painlumbar spinepars

Identifiers

PMID37766055
PMCPMC10538057
OpenAlexW4386913424

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.