Medical Dialogues
  • Dermatology
Login Register
This site is intended for healthcare professionals only
Login Register
  • MD Brand Connect
  • Vaccine Hub
  • MDTV
    • Breaking News
    • Medical News Today
    • Health News Today
    • Latest
    • Journal Club
    • Medico Legal Update
    • Latest Webinars
    • MD Shorts
    • Health Dialogues
  • Fact Check
  • Health Dialogues
Medical Dialogues
  • Medical News & Guidelines
      • Anesthesiology
      • Cardiology and CTVS
      • Critical Care
      • Dentistry
      • Dermatology
      • Diabetes and Endocrinology
      • ENT
      • Gastroenterology
      • Medicine
      • Nephrology
      • Neurology
      • Obstretics-Gynaecology
      • Oncology
      • Ophthalmology
      • Orthopaedics
      • Pediatrics-Neonatology
      • Psychiatry
      • Pulmonology
      • Radiology
      • Surgery
      • Urology
      • Laboratory Medicine
      • Diet
      • Nursing
      • Paramedical
      • Physiotherapy
  • Health news
      • Doctor News
      • Government Policies
      • Hospital & Diagnostics
      • International Health News
      • Medical Organization News
      • Medico Legal News
      • NBE News
      • NMC News
  • Fact Check
      • Bone Health Fact Check
      • Brain Health Fact Check
      • Cancer Related Fact Check
      • Child Care Fact Check
      • Dental and oral health fact check
      • Diabetes and metabolic health fact check
      • Diet and Nutrition Fact Check
      • Eye and ENT Care Fact Check
      • Fitness fact check
      • Gut health fact check
      • Heart health fact check
      • Kidney health fact check
      • Medical education fact check
      • Men's health fact check
      • Respiratory fact check
      • Skin and hair care fact check
      • Vaccine and Immunization fact check
      • Women's health fact check
  • AYUSH
    • Ayurveda
    • Homeopathy
    • Siddha
    • Unani
    • Yoga
  • State News
      • Andaman and Nicobar Islands
      • Andhra Pradesh
      • Arunachal Pradesh
      • Assam
      • Bihar
      • Chandigarh
      • Chattisgarh
      • Dadra and Nagar Haveli
      • Daman and Diu
      • Delhi
      • Goa
      • Gujarat
      • Haryana
      • Himachal Pradesh
      • Jammu & Kashmir
      • Jharkhand
      • Karnataka
      • Kerala
      • Ladakh
      • Lakshadweep
      • Madhya Pradesh
      • Maharashtra
      • Manipur
      • Meghalaya
      • Mizoram
      • Nagaland
      • Odisha
      • Puducherry
      • Punjab
      • Rajasthan
      • Sikkim
      • Tamil Nadu
      • Telangana
      • Tripura
      • Uttar Pradesh
      • Uttrakhand
      • West Bengal
  • Medical Education
      • Ayush Education News
      • Dentistry Education News
      • Medical Admission News
      • Medical Colleges News
      • Medical Courses News
      • Medical Universities News
      • Nursing education News
      • Paramedical Education News
      • Study Abroad
  • Industry
      • Health Investment News
      • Health Startup News
      • Medical Devices News
      • Pharma News
      • Pharmacy Education News
      • Industry Perspective
  • MDTV
      • Health Dialogues MDTV
      • Health News today MDTV
      • Latest Videos MDTV
      • Latest Webinars MDTV
      • MD shorts MDTV
      • Medical News Today MDTV
      • Medico Legal Update MDTV
      • Top Videos MDTV
      • Health Perspectives MDTV
      • Journal Club MDTV
      • Medical Dialogues Show
This site is intended for healthcare professionals only
LoginRegister
Medical Dialogues
LoginRegister
  • Home
  • Medical news & Guidelines
    • Anesthesiology
    • Cardiology and CTVS
    • Critical Care
    • Dentistry
    • Dermatology
    • Diabetes and Endocrinology
    • ENT
    • Gastroenterology
    • Medicine
    • Nephrology
    • Neurology
    • Obstretics-Gynaecology
    • Oncology
    • Ophthalmology
    • Orthopaedics
    • Pediatrics-Neonatology
    • Psychiatry
    • Pulmonology
    • Radiology
    • Surgery
    • Urology
    • Laboratory Medicine
    • Diet
    • Nursing
    • Paramedical
    • Physiotherapy
  • Health news
    • Doctor News
    • Government Policies
    • Hospital & Diagnostics
    • International Health News
    • Medical Organization News
    • Medico Legal News
    • NBE News
    • NMC News
  • Fact Check
    • Bone Health Fact Check
    • Brain Health Fact Check
    • Cancer Related Fact Check
    • Child Care Fact Check
    • Dental and oral health fact check
    • Diabetes and metabolic health fact check
    • Diet and Nutrition Fact Check
    • Eye and ENT Care Fact Check
    • Fitness fact check
    • Gut health fact check
    • Heart health fact check
    • Kidney health fact check
    • Medical education fact check
    • Men's health fact check
    • Respiratory fact check
    • Skin and hair care fact check
    • Vaccine and Immunization fact check
    • Women's health fact check
  • AYUSH
    • Ayurveda
      • Ayurveda Giuidelines
      • Ayurveda News
    • Homeopathy
      • Homeopathy Guidelines
      • Homeopathy News
    • Siddha
      • Siddha Guidelines
      • Siddha News
    • Unani
      • Unani Guidelines
      • Unani News
    • Yoga
      • Yoga Guidelines
      • Yoga News
  • State News
    • Andaman and Nicobar Islands
    • Andhra Pradesh
    • Arunachal Pradesh
    • Assam
    • Bihar
    • Chandigarh
    • Chattisgarh
    • Dadra and Nagar Haveli
    • Daman and Diu
    • Delhi
    • Goa
    • Gujarat
    • Haryana
    • Himachal Pradesh
    • Jammu & Kashmir
    • Jharkhand
    • Karnataka
    • Kerala
    • Ladakh
    • Lakshadweep
    • Madhya Pradesh
    • Maharashtra
    • Manipur
    • Meghalaya
    • Mizoram
    • Nagaland
    • Odisha
    • Puducherry
    • Punjab
    • Rajasthan
    • Sikkim
    • Tamil Nadu
    • Telangana
    • Tripura
    • Uttar Pradesh
    • Uttrakhand
    • West Bengal
  • Medical Education
    • Ayush Education News
    • Dentistry Education News
    • Medical Admission News
    • Medical Colleges News
    • Medical Courses News
    • Medical Universities News
    • Nursing education News
    • Paramedical Education News
    • Study Abroad
  • Industry
    • Health Investment News
    • Health Startup News
    • Medical Devices News
    • Pharma News
      • CDSCO (Central Drugs Standard Control Organisation) News
    • Pharmacy Education News
    • Industry Perspective
  • Home
  • Radiology
  • Radiology News
  • Novel scanners may ...

Novel scanners may assess brain stem function in patients with hearing impairment

Written By : Dr. Kamal Kant Kohli Published On 2020-03-25T20:11:49+05:30  |  Updated On 25 March 2020 8:11 PM IST
Novel scanners may  assess brain stem function in patients with hearing impairmentAxial 18F-FDG PET scans at level of PAC (top, VOI outline in blue) and IC (bottom) in 2 representative patients with left-sided (left image) and right-sided (right image) AHL. Arrows indicate side of decreased metabolism. CREDIT Iva Speck and Lars Frings, University Hospital Freiburg, Germany.
  • facebook
  • twitter
  • linkedin
  • whatsapp
  • Telegram
  • Email

High-resolution PET/CT scan may open door for prognostic assessment in patients receiving cochlear implants.

Researchers have found that novel, fully digital, high-resolution positron emission tomography/computed tomography (PET/CT) imaging of small brain stem nuclei can provide clinicians with valuable information concerning the auditory pathway in patients with hearing impairment.The new study has been published in The Journal of Nuclear Medicine.

Using 18F-FDG PET/CT imaging, researchers found that patients with asymmetrical hearing loss have reduced glucose metabolism in parts of the brain stem and primary auditory cortex. The latter may be influenced by cortical reorganization and thus, hopefully help to predict the chance that a cochlear implant will improve hearing.

"With the possible exception of few dedicated high-resolution research scanners, earlier PET/CT systems with lower resolution did not permit clear-cut identification and assessment of brain stem nuclei," said Iva Speck, MD, resident of otorhinolaryngology at the University of Freiburg Medical Center in Freiberg, Germany. "Today, the use of fully digital clinical PET/CT systems permits greatly enhanced imaging and quantitative assessment of small brain stem nuclei, such as the inferior colliculus (IC), the part of the midbrain that acts as a main auditory pathway for the body."

In the study, 13 patients with asymmetric hearing loss underwent 18F-FDG PET/CT imaging. The scans were reviewed by two experienced readers who examined regional glucose metabolism in the IC and the primary auditory cortex (PAC)--a part of the brain known to undergo metabolic changes based on acoustical outside input and transformation to neuronal signals from the cochlea hair cells to the auditory nerve fibers. The readers rated the scans as to whether glucose metabolism showed no asymmetry or mild, moderate or strong asymmetry to the left or to the right for the IC and PAC separately. Statistical analyses were performed to determine the effect of the duration of hearing impairment on glucose metabolism and to compare glucose metabolism between the IC and PAC.

Regional glucose metabolism of both the IC and PAC was significantly reduced on the contralateral (opposite) side of the poorer-hearing ear, as compared to the ipsilateral (same) side. In addition, a longer duration of hearing impairment was associated with a higher metabolism on the contralateral PAC. By contrast, duration of hearing impairment did not predict regional glucose metabolism for the ipsilateral PAC or either side of the IC.

"Previous studies suggest that the association between longer duration of hearing impairment and higher glucose metabolism indicates cortical reorganization. In bilateral deaf patients this has been shown to lessen the benefits of cochlear implants," said Speck. "Prediction of a successful cochlear implant outcome might benefit from improved imaging with fully digital PET/CT systems, as large parts of the auditory system, including small brain nuclei such as the IC, can be assessed for preoperative patient characterization."

She continued, "Beyond this topic, the study's findings are of interest for other neurological research fields, like neurodegenerative diseases, which often affect brain stem nuclei early in disease course," Speck remarked. "Digital PET pushes the limits of what can be imaged and contributed to patient care by molecular imaging."

For further reference log on to:

http://dx.doi.org/10.2967/jnumed.119.231407


Source : The Journal of Nuclear Medicine
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

Show Full Article
Next Story

Editorial

Bisoprolol in CAD - Key Insights from National Consensus 2025 with Special Focus on Women

Bisoprolol in CAD - Key Insights from National Consensus 2025 with Special Focus on Women

Featured image representing orthopaedic care

Modern Orthopaedic Care: How Is Technology Improving Movement and Recovery? - Dr Abhijit Lonari

Aspirin in Primary Prevention of Stroke-Review of Evidence Through the Needs of Indian Clinical Settings

Aspirin in Primary Prevention of Stroke-Review of Evidence Through the Needs of Indian Clinical...

Dapagliflozin Shines in Post-TAVI Patients:DAPA-TAVI Trial Findings

Dapagliflozin Shines in Post-TAVI Patients:DAPA-TAVI Trial Findings

Identifying Candidates for Aspirin in Primary Prevention: Men Aged 40-50 with Hypertension, Dyslipidemia, and Familial ASCVD Risk

Identifying Candidates for Aspirin in Primary Prevention: Men Aged 40-50 with Hypertension,...

View All

Journal Club Today

Managing Acne Prone Skin - Dermatologist Dr Sai Sandeepthi

Managing Acne Prone Skin - Dermatologist Dr Sai Sandeepthi

View All

Health News Today

Health Bulletin 10/July/ 2025

Health Bulletin 10/July/ 2025

View All
© 2022 All Rights Reserved.
Powered By: Hocalwire
X
We use cookies for analytics, advertising and to improve our site. You agree to our use of cookies by continuing to use our site. To know more, see our Cookie Policy and Cookie Settings.Ok