Evidence map›Paper›PMID 34347537›Full record

ArticleDento maxillo facial radiology2022

Automatic segmentation of the temporomandibular joint disc on magnetic resonance images using a deep learning technique.

Michihito Nozawa, Hirokazu Ito, Yoshiko Ariji, Motoki Fukuda, Chinami Igarashi, Masako Nishiyama, Nobumi Ogi, Akitoshi Katsumata, Kaoru Kobayashi, Eiichiro Ariji

Abstract read
In one paragraph

Article in Dento maxillo facial radiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

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

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. 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

10 authors.

Michihito NozawaDepartment of Oral and Maxillofacial Radiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan.
Hirokazu ItoDepartment of Oral and Maxillofacial Radiology, Tsurumi University School of Dentistry, Yokohama, Japan.
Yoshiko ArijiDepartment of Oral and Maxillofacial Radiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan.
Motoki FukudaDepartment of Oral and Maxillofacial Radiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan.
Chinami IgarashiDepartment of Oral and Maxillofacial Radiology, Tsurumi University School of Dentistry, Yokohama, Japan.
Masako NishiyamaDepartment of Oral and Maxillofacial Radiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan.
Nobumi OgiDepartment of Oral and Maxillofacial Surgery, Aichi Gakuin University School of Dentistry, Nagoya, Japan.
Akitoshi KatsumataDepartment of Oral Radiology, Asahi University School of Dentistry, Mizuho, Japan.
Kaoru KobayashiDepartment of Oral and Maxillofacial Radiology, Tsurumi University School of Dentistry, Yokohama, Japan.
Eiichiro ArijiDepartment of Oral and Maxillofacial Radiology, Aichi Gakuin University School of Dentistry, Nagoya, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe aims of the present study were to construct a deep learning model for automatic segmentation of the temporomandibular joint (TMJ) disc on magnetic resonance (MR) images, and to evaluate the performances using the internal and external test data.

methodsIn total, 1200 MR images of closed and open mouth positions in patients with temporomandibular disorder (TMD) were collected from two hospitals (Hospitals A and B). The training and validation data comprised 1000 images from Hospital A, which were used to create a segmentation model. The performance was evaluated using 200 images from Hospital A (internal validity test) and 200 images from Hospital B (external validity test).

resultsAlthough the analysis of performance determined with data from Hospital B showed low recall (sensitivity), compared with the performance determined with data from Hospital A, both performances were above 80%. Precision (positive predictive value) was lower when test data from Hospital A were used for the position of anterior disc displacement. According to the intra-articular TMD classification, the proportions of accurately assigned TMJs were higher when using images from Hospital A than when using images from Hospital B.

conclusionThe segmentation deep learning model created in this study may be useful for identifying disc positions on MR images.

Indexed as

Deep LearningJoint DislocationsHumansMagnetic Resonance ImagingMandibular CondyleTemporomandibular Joint DiscArtificial intelligenceDeep learningMagnetic resonance imagingTemporomandibular joint disc

Identifiers

PMID34347537
PMCPMC8693319

What OpenQuestion holds

Textmetadata
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.