We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us

Download Mobile App




Events

ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.
30 Jan 2023 - 02 Feb 2023

New 10-Minute CT Scan Detects and Cures Commonest Cause of High Blood Pressure

By MedImaging International staff writers
Posted on 18 Jan 2023
Print article
A ten-minute scan enables detection and cure of the commonest cause of high blood pressure (Photo courtesy of Pexels)
A ten-minute scan enables detection and cure of the commonest cause of high blood pressure (Photo courtesy of Pexels)

Hypertension (high blood pressure) is a condition that requires life-long treatment through drugs with its cause remaining unknown in most patients. A research group had previously found that in 5-10% of people suffering from Hypertension, the culprit was a gene mutation in the adrenal glands that resulted in the production of excessive levels of the steroid hormone, aldosterone. This steroid hormone leads to salt being retained in the body, thereby driving blood pressure levels higher. Patients having excessive aldosterone levels in their blood exhibit resistance to treatment with commonly used Hypertension drugs, increasing their risk of heart attack and stroke. Now, the same research group has demonstrated that by using a new type of CT scan to light up tiny nodules in a hormone gland and removing them, it is possible to cure high blood pressure. These nodules can be found in one-in-twenty people suffering from high blood pressure.

The research led by doctors at Queen Mary University of London (London, UK) has solved a 60-year problem of how the hormone producing nodules can be detected without a complicated catheter study that is performed in few hospitals and has a high failure rate. The research also found that upon combining it with a urine test, the scan can detect a group of patients who come off all their blood pressure medicines after treatment. After discovering that their high blood pressure was caused by aldosterone, the doctors conducted a study of the new scan that involved 128 people. The scan found that in two thirds of patients with elevated aldosterone levels, the secretion was from a benign nodule in just one of the adrenal glands, which can be easily removed.

The scan uses a very short-acting dose of metomidate, a radioactive dye that sticks only to the aldosterone-producing nodule. The scan was not only as accurate as the old catheter test, but also quick, painless and technically successful in all the patients. Until now, the catheter test was not capable of predicting which patients could be fully cured of hypertension by surgically removing the gland. In contrast, a ‘hot nodule’ on the scan combined with a urine steroid test detected 18 of the 24 patients who achieved normal blood pressure off all their drugs.

“These aldosterone-producing nodules are very small and easily overlooked on a regular CT scan,” said Professor Morris Brown, co-senior author of the study and Professor of Endocrine Hypertension at Queen Mary University of London. “When they glow for a few minutes after our injection, they are revealed as the obvious cause of Hypertension, which can often then be cured. Until now, 99% are never diagnosed because of the difficulty and unavailability of tests. Hopefully this is about to change.”

Gold Supplier
SBRT Phantom with Removable Spine
E2E SBRT Phantom with Removable Spine Model 036S-CVXX-xx
Endoscopic Ultrasound Processor
EU-ME3
Ultrasound System
Xario 200G
New
Ultrasound Probe Covers
Intuit

Print article
CIRS -  MIRION

Channels

Radiography

view channel
Researchers used AI to triage patients with chest pain (Photo courtesy of Pexels)

First Deep Learning AI Model Triages Patients with Chest Pain Using X-Rays

Acute chest pain syndrome can involve tightness, burning or other discomfort in the chest or a severe pain that spreads to the back, neck, shoulders, arms, or jaw, accompanied by shortness of breath.... Read more

Ultrasound

view channel
Image: Dr. Derek Cool demonstrating the new robotic 3D ultrasound system (Photo courtesy of Lawson Health)

Robotic 3D Ultrasound System Improves Accuracy of Liver Cancer Treatment

Liver cancer is the fourth-leading cause of cancer death in the world. Surgery is one treatment option for liver cancer, although thermal ablation which uses heat to destroy the cancerous tumor has less... Read more

Nuclear Medicine

view channel
Image: Tracking radiation treatment in real time promises safer, more effective cancer therapy (Photo courtesy of Pexels)

Real-Time 3D Imaging Provides First-of-Its-Kind View of X-Rays Hitting Inside Body During Radiation Therapy

Radiation is used in treatment for hundreds of thousands of cancer patients each year, bombarding an area of the body with high energy waves and particles, usually X-rays. The radiation can kill cancer... Read more

Imaging IT

view channel
Image: The new Medical Imaging Suite makes healthcare imaging data more accessible, interoperable and useful (Photo courtesy of Google Cloud)

New Google Cloud Medical Imaging Suite Makes Imaging Healthcare Data More Accessible

Medical imaging is a critical tool used to diagnose patients, and there are billions of medical images scanned globally each year. Imaging data accounts for about 90% of all healthcare data1 and, until... Read more
Copyright © 2000-2023 Globetech Media. All rights reserved.