Open research questions in Ultrasound and Hyperthermia Applications
101 gap statements mined from Ultrasound and Hyperthermia Applications papers in our 4.5M-paper local library, which holds 393 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.
What the literature leaves open
The study was retrospective, - The sample size was limited to 112 patients, - The study was conducted at a single hospital, - The study did not include a control group, - The study did not investigate the long-term outcomes of the patients
Differentiation of clear cell and non clear cell renal cell carcinoma through high-frame-rate contrast-enhanced ultrasound · 2026 · DOIThe current methods for differentiating between clear cell and non-clear cell renal cell carcinoma have limitations. There is a need for a more accurate and reliable method for differentiating between types of carcinoma. High-frame-rate contrast-enhanced ultrasound has the potential to fill this gap.
Differentiation of clear cell and non clear cell renal cell carcinoma through high-frame-rate contrast-enhanced ultrasound · 2026 · DOIFurther investigation into the physiological mechanisms underlying LIFU's effects, - Exploring the integration of LIFU with other SUD treatment modalities, - Standardized reporting of ultrasound parameters
The therapeutic potential of low-intensity focused ultrasound for treating substance use disorder · 2024 · DOIMost studies employ moderate parameters that induce Class II SIR with robust BBB modulation, with reports indicating acute immune activation within 5 min and up to 3 days post-treatment; however, longer-term dynamics remain unclear.
Neuroinflammation from ultrasound-driven blood-brain barrier modulation features early NFκB innate and late interferon immune stages · 2026 · DOIThese results suggest that piezoelectric electrospun hydrogel scaffolds may be a pathway for safer and more biocompatible restoration after TBI, but provide insufficient evidence to conclude that the scaffold significantly improved motor recovery.
The effect of an ultrasound-activated electrospun piezoelectric hydrogel scaffold on post-traumatic brain injury motor function in Drosophila melanogaster · 2026 · DOIThis review describes several common POCUS applications used in gastroenterology and hepatology, as well as some novel applications that warrant further investigation.
Despite extensive research, the quantitative relationship between bubble structure, acoustic response, and therapeutic efficacy remains poorly understood.
A Review on the Structure-Response-Efficacy Optimization of Ultrasound-Responsive Micro/Nanobubbles for Cancer Therapy · 2025 · DOIHowever, the downstream physiological effects following BBB opening, particularly secondary responses, are not well understood.
Single Exposure to Low-Intensity Focused Ultrasound Causes Biphasic Opening of the Blood-Brain Barrier Through Secondary Mechanisms · 2025 · DOIBACKGROUND: Human umbilical cord mesenchymal stem cells (hUC-MSCs) show potential for treating acute respiratory distress syndrome (ARDS), however, their homing to the lungs and survival time are insufficient.
Ultrasound assisted homing of human umbilical cord mesenchymal stem cells promotes recovery from acute respiratory distress syndrome · 2025 · DOIBackground/Objectives: Focused ultrasound (FUS) and microbubble (MB) exposure is a promising technique for targeted drug delivery to the brain; however, refinement of protocols suitable for large-volume treatments in a clinical setting remains underexplored.
Investigation of Sonication Parameters for Large-Volume Focused Ultrasound-Mediated Blood–Brain Barrier Permeability Enhancement Using a Clinical-Prototype Hemispherical Phased Array · 2024 · DOIStudies in humans have shown that tFUS can successfully modulate perfusion in focal sonication targets, including the amygdala; however, limited research has explored how tFUS impacts large-scale neural networks.
Alterations in large-scale resting-state network nodes following transcranial focused ultrasound of deep brain structures · 2024 · DOIThere is a need for non-invasive therapeutic tools for PD. Current therapies have limitations, such as invasiveness and side effects.
Suppression of pathological oscillations with transcranial focused ultrasound in Parkinson’s disease · 2026 · DOIIt was not possible to deliver TUS during UPDRS-III assessments, so these assessments were conducted 'off-line' after TUS had stopped, limiting real-time measurement of treatment effects.
Suppression of pathological oscillations with transcranial focused ultrasound in Parkinson’s disease · 2026 · DOIThere is a need for further research on the comparative efficacy and safety of LITT, FUS, and RFA - There is a need for further research on the roles of LITT, FUS, and RFA in minimally invasive neurosurgery
From competition to complementarity: narrative review of laser interstitial thermal therapy, focused ultrasound, and radiofrequency ablation in minimally invasive neurosurgery · 2026 · DOIThe paper identifies a gap in the use of FUS for therapeutic delivery in CCM. The study highlights the need for further investigation into the use of FUS for therapeutic delivery in CCM.
Accordingly, future studies should investigate the delivery of larger agents using contrast proxies such as gadolinium-labeled IgG or superparamagnetic iron oxide nanoparticles. In our work, we demonstrate that FUS-mediated BBBO enhances the delivery of systemically administered agents; however, the extent to which this improved delivery translates to therapeutic benefit remains unclear. A key limitation of both 4T1 and EMT6 models is their reliance on implantable tumor systems. This wide range of therapeutic sizes, combined with evidence that VN modulates delivery in a size- dependent manner at baseline19, highlights an important gap in understanding how larger agents behave in the context of FUS+VN. While MultiHance serves as a useful proxy for small-molecule delivery and GadoSpin D for small biologics, investigation of larger agents is warranted to better model the delivery of therapeutics such as monoclonal antibodies230 and gene therapies. As a result, the conclusions drawn here may primarily reflect the behavior of familial disease, and additional studies in sporadic models are warranted to determine whether similar susceptibility and treatment-related effects are observed across CCM subtypes. Therefore, future studies evaluating FUS in the absence of MBs are warranted to determine whether FUS alone can influence lesion growth and progression.
There is a need for non-invasive therapeutic strategies to reduce neuroinflammation in neurological diseases. The effects of ultrasound on microglial activity and neuroinflammation are not well understood.
Ultrasound modulates microglial activity and reduces neuroinflammation in a parameter-dependent manner · 2026 · DOIFurther studies on the application of the ultrasound-assisted pH-shifting method for encapsulating other lipophilic bioactives. Investigation of the in vivo efficacy and safety of the composite protein nanoparticles.
High-performance astaxanthin-loaded composite nanoparticles: fabrication via ultrasound-assisted pH-shifting and characterization of encapsulation, stability, and bioavailability · 2026 · DOILimited approaches for encapsulating lipophilic bioactives with high efficiency and stability. Need for a versatile method for delivering bioactive substances.
High-performance astaxanthin-loaded composite nanoparticles: fabrication via ultrasound-assisted pH-shifting and characterization of encapsulation, stability, and bioavailability · 2026 · DOIFurther research is needed to fully explore the potential of USNS as a treatment for mood disorders. Studies should investigate the long-term effects of USNS and compare it to other brain stimulation techniques. Research should explore the use of USNS in combination with other therapies to enhance treatment outcomes.
Optimized ultrasound neurostimulation of ventromedial prefrontal cortex reverses depression behaviours and normalizes brain metabolism · 2026 · DOIThere is a need for novel therapies for mood disorders that can overcome the limitations of current treatments. There is a lack of understanding of the mechanisms underlying the effects of brain stimulation techniques on brain metabolism.
Optimized ultrasound neurostimulation of ventromedial prefrontal cortex reverses depression behaviours and normalizes brain metabolism · 2026 · DOIThe limited depth of penetration of non-invasive brain stimulation techniques like TMS and tDCS. The lack of comprehensive reviews on the application of tFUS in AD. The need for standardisation of acoustic protocols and longitudinal clinical cohorts to establish the long-term efficacy of tFUS.
The transient effect of antibodies targeting Ly6C and Ly6G on intratumoral isMCs. The depletion of T cells and dendritic cells following myeloid cell targeting strategies. The limited understanding of the tumor microenvironment and its response to myeloid cell targeting strategies.
Myeloid Cell Targeting Strategies Show Limited Durable Activity in the Breast Cancer Tumor Microenvironment and Do Not Enhance the Activity of Thermally Ablative Focused Ultrasound · 2026 · DOIInvestigating alternative myeloid cell targeting strategies. Examining the effects of T-FUS on other types of cancer. Developing more effective and durable treatments for TNBC.
Myeloid Cell Targeting Strategies Show Limited Durable Activity in the Breast Cancer Tumor Microenvironment and Do Not Enhance the Activity of Thermally Ablative Focused Ultrasound · 2026 · DOILow-intensity focused ultrasound (LIFU) is a promising neuromodulation modality, but challenges related to high response variability and the poorly understood parameter space undermine progress in clinical applications.
Bayesian-enhanced closed-loop optimization of ultrasound protocols for targeted and precise neuromodulation · 2026 · DOI
Most-cited papers in Ultrasound and Hyperthermia Applications
- Focused ultrasound excites cortical neurons via mechanosensitive calcium accumulation and ion channel amplification · Nature Communications · 2022 · 462 citations
- Ultrasound Blood–Brain Barrier Opening and Aducanumab in Alzheimer’s Disease · New England Journal of Medicine · 2024 · 264 citations
- In vitro effects of therapeutic ultrasound on cell proliferation, protein synthesis, and cytokine production by human fibroblasts, osteoblasts, and monocytes · Journal of Oral and Maxillofacial Surgery · 1999 · 251 citations
- Characterization of ultrasound contrast microbubbles usingin vitroexperiments and viscous and viscoelastic interface models for encapsulation · The Journal of the Acoustical Society of America · 2005 · 248 citations
- Repeated blood–brain barrier opening with an implantable ultrasound device for delivery of albumin-bound paclitaxel in patients with recurrent glioblastoma: a phase 1 trial · The Lancet Oncology · 2023 · 243 citations
- Effects of nonlinear propagation, cavitation, and boiling in lesion formation by high intensity focused ultrasound in a gel phantom · The Journal of the Acoustical Society of America · 2006 · 237 citations
- Controlled tissue emulsification produced by high intensity focused ultrasound shock waves and millisecond boiling · The Journal of the Acoustical Society of America · 2011 · 196 citations
- Direct observations of ultrasound microbubble contrast agent interaction with the microvessel wall · The Journal of the Acoustical Society of America · 2007 · 193 citations
- Focusing of therapeutic ultrasound through a human skull: A numerical study · The Journal of the Acoustical Society of America · 1998 · 183 citations
- Ultrasound-mediated disruption of cell membranes. I. Quantification of molecular uptake and cell viability · The Journal of the Acoustical Society of America · 2001 · 168 citations
Most recent work
- Cryoablation: A Minimally Invasive Alternative for Early-Stage Breast Cancer: 6-Year Outcomes of the FROST Clinical Trial · Annals of Surgical Oncology · 2026
- Advances in therapeutic hybrid neuromodulation for Parkinson’s disease · 3 Biotech · 2026
- Analysis and prediction of transient thermal evolutions and damage quantifications in cardiac tumors during radiofrequency ablation using feed-forward neural networks and decision trees · International Communications in Heat and Mass Transfer · 2026
- An ultrasound-scanning in vivo light source · Nature Materials · 2026
- Hydrogel metapad with ultrasound transparency and broadband focusing for biomedical imaging · National Science Review · 2026
- Ultrasound-Assisted multimodal neuromodulation via nanosystems · Journal of Nanobiotechnology · 2026
- Translational dynamics of lipid-coated microbubbles driven by ultrasound · Physical Review Fluids · 2026
- Next Generation Ultrasound Transducers: The Role of Passive Layers and Hydrogel Couplants · Small Methods · 2026
- Suppression of pathological oscillations with transcranial focused ultrasound in Parkinson’s disease · Nature Communications · 2026
- Utilization of Pediatric Contrast-Enhanced Ultrasound in the United States After FDA Approval: Insights From National Claims Databases · American Journal of Roentgenology · 2026
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