3 research outputs found
One-shot Localization and Segmentation of Medical Images with Foundation Models
Recent advances in Vision Transformers (ViT) and Stable Diffusion (SD) models
with their ability to capture rich semantic features of the image have been
used for image correspondence tasks on natural images. In this paper, we
examine the ability of a variety of pre-trained ViT (DINO, DINOv2, SAM, CLIP)
and SD models, trained exclusively on natural images, for solving the
correspondence problems on medical images. While many works have made a case
for in-domain training, we show that the models trained on natural images can
offer good performance on medical images across different modalities
(CT,MR,Ultrasound) sourced from various manufacturers, over multiple anatomical
regions (brain, thorax, abdomen, extremities), and on wide variety of tasks.
Further, we leverage the correspondence with respect to a template image to
prompt a Segment Anything (SAM) model to arrive at single shot segmentation,
achieving dice range of 62%-90% across tasks, using just one image as
reference. We also show that our single-shot method outperforms the recently
proposed few-shot segmentation method - UniverSeg (Dice range 47%-80%) on most
of the semantic segmentation tasks(six out of seven) across medical imaging
modalities.Comment: Accepted at NeurIPS 2023 R0-FoMo Worksho
Audiological Outcome of Classical Adenoidectomy versus Endoscopically-Assisted Adenoidectomy using a Microdebrider
Introduction:
The aim of this study was to evaluate audiological outcomes following adenoidectomy by the classical method and by endoscopically-assisted adenoidectomy using a powered instrument (microdebrider).
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Materials and Methods:
This study was conducted in a tertiary care center. It included 40 patients divided into two equal groups of 20 each. Group-A patients underwent classical adenoidectomy, while Group-B patients were subjected to endoscopically-assisted adenoidectomy using a microdebrider. Hearing outcome was measured by post-operative pure-tone audiometry and tympanometry.
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Results:
The post-operative average air-bone gap (ABG) was reduced from 19.6 dB to 11.8 dB in Group A and from 17.6 dB to 8.7 dB in Group B (P=0.010). There was reversal of tympanometric curves from type-B and type-C to type-A in 55% of the patients in Group A, while type-A curve was seen in 90% cases in Group B in the post-operative period.
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Conclusion:Â
Audiological outcomes of endoscopically-assisted adenoidectomy using a microdebrider were superior compared with classical adenoidectomy